brasse/FitnessDroid
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

openScale-port: GPL-3.0-relicens + BT-vågsdrivrutiner (grund + Exingtech Y1/VScale)

Browse Source 
- LICENSE → GPL-3.0 (krav för att bädda in openScales kod)
- Vendrat com.health.openscale.core.bluetooth: ScaleDeviceHandler,
  Gatt/Broadcast/Spp-adaptrar, ScaleFactory (utan Hilt), ScaleCommunicator,
  BleScanner, ConverterUtils, ScaleMeasurement/ScaleUser — copyright-headers kvar
- ExingtechY1Handler: Biltema 84-1002 (PT-727), annonserar som "VScale"
- Shims för openScales interna beroenden: facades (DataStore-backade),
  slimmade enums/User/MeasurementWithValues, LogManager → logcat
- blessed-kotlin 3.0.12 via JitPack; Kotlin 2.0.21→2.2.0, KSP2, Room 2.7.2
- BLE-permissions (BLUETOOTH_SCAN neverForLocation + CONNECT) i manifestet
- Svenska strängresurser för drivrutinernas meddelanden

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01C2GA94E1f3cmrvdQLQhYdg
This commit is contained in:
claude
2026-08-23 11:11:38 +02:00
parent efebcb111f
commit 261755794b
24 changed files with 4411 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

675
LICENSE Normal file
View File

@@ -0,0 +1,675 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of
protecting users' freedom to change the software. The systematic
pattern of such abuse occurs in the area of products for individuals to
use, which is precisely where it is most unacceptable. Therefore, we
have designed this version of the GPL to prohibit the practice for those
products. If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-free.
The precise terms and conditions for copying, distribution and
modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.
"The Program" refers to any copyrightable work licensed under this
License. Each licensee is addressed as "you". "Licensees" and
"recipients" may be individuals or organizations.
To "modify" a work means to copy from or adapt all or part of the work
in a fashion requiring copyright permission, other than the making of an
exact copy. The resulting work is called a "modified version" of the
earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodified Program or a work based
on the Program.
To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy. Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.
To "convey" a work means any kind of propagation that enables other
parties to make or receive copies. Mere interaction with a user through
a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays "Appropriate Legal Notices"
to the extent that it includes a convenient and prominently visible
feature that (1) displays an appropriate copyright notice, and (2)
tells the user that there is no warranty for the work (except to the
extent that warranties are provided), that licensees may convey the
work under this License, and how to view a copy of this License. If
the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.
1. Source Code.
The "source code" for a work means the preferred form of the work
for making modifications to it. "Object code" means any non-source
form of a work.
A "Standard Interface" means an interface that either is an official
standard defined by a recognized standards body, or, in the case of
interfaces specified for a particular programming language, one that
is widely used among developers working in that language.
The "System Libraries" of an executable work include anything, other
than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form. A
"Major Component", in this context, means a major essential component
(kernel, window system, and so on) of the specific operating system
(if any) on which the executable work runs, or a compiler used to
produce the work, or an object code interpreter used to run it.
The "Corresponding Source" for a work in object code form means all
the source code needed to generate, install, and (for an executable
work) run the object code and to modify the work, including scripts to
control those activities. However, it does not include the work's
System Libraries, or general-purpose tools or generally available free
programs which are used unmodified in performing those activities but
which are not part of the work. For example, Corresponding Source
includes interface definition files associated with source files for
the work, and the source code for shared libraries and dynamically
linked subprograms that the work is specifically designed to require,
such as by intimate data communication or control flow between those
subprograms and other parts of the work.
The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
Source.
The Corresponding Source for a work in source code form is that
same work.
2. Basic Permissions.
All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work. This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not
convey, without conditions so long as your license otherwise remains
in force. You may convey covered works to others for the sole purpose
of having them make modifications exclusively for you, or provide you
with facilities for running those works, provided that you comply with
the terms of this License in conveying all material for which you do
not control copyright. Those thus making or running the covered works
for you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any copies of
your copyrighted material outside their relationship with you.
Conveying under any other circumstances is permitted solely under
the conditions stated below. Sublicensing is not allowed; section 10
makes it unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological
measure under any applicable law fulfilling obligations under article
11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such
measures.
When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
the covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.
4. Conveying Verbatim Copies.
You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.
You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.
5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified
it, and giving a relevant date.
b) The work must carry prominent notices stating that it is
released under this License and any conditions added under section
7. This requirement modifies the requirement in section 4 to
"keep intact all notices".
c) You must license the entire work, as a whole, under this
License to anyone who comes into possession of a copy. This
License will therefore apply, along with any applicable section 7
additional terms, to the whole of the work, and all its parts,
regardless of how they are packaged. This License gives no
permission to license the work in any other way, but it does not
invalidate such permission if you have separately received it.
d) If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
interfaces that do not display Appropriate Legal Notices, your
work need not make them do so.
A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit. Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.
6. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:
a) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by the
Corresponding Source fixed on a durable physical medium
customarily used for software interchange.
b) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by a
written offer, valid for at least three years and valid for as
long as you offer spare parts or customer support for that product
model, to give anyone who possesses the object code either (1) a
copy of the Corresponding Source for all the software in the
product that is covered by this License, on a durable physical
medium customarily used for software interchange, for a price no
more than your reasonable cost of physically performing this
conveying of source, or (2) access to copy the
Corresponding Source from a network server at no charge.
c) Convey individual copies of the object code with a copy of the
written offer to provide the Corresponding Source. This
alternative is allowed only occasionally and noncommercially, and
only if you received the object code with such an offer, in accord
with subsection 6b.
d) Convey the object code by offering access from a designated
place (gratis or for a charge), and offer equivalent access to the
Corresponding Source in the same way through the same place at no
further charge. You need not require recipients to copy the
Corresponding Source along with the object code. If the place to
copy the object code is a network server, the Corresponding Source
may be on a different server (operated by you or a third party)
that supports equivalent copying facilities, provided you maintain
clear directions next to the object code saying where to find the
Corresponding Source. Regardless of what server hosts the
Corresponding Source, you remain obligated to ensure that it is
available for as long as needed to satisfy these requirements.
e) Convey the object code using peer-to-peer transmission, provided
you inform other peers where the object code and Corresponding
Source of the work are being offered to the general public at no
charge under subsection 6d.
A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.
A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling. In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage. For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product. A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
the only significant mode of use of the product.
"Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install
and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source. The information must
suffice to ensure that the continued functioning of the modified object
code is in no case prevented or interfered with solely because
modification has been made.
If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information. But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).
The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed. Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.
Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.
7. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law. If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:
a) Disclaiming warranty or limiting liability differently from the
terms of sections 15 and 16 of this License; or
b) Requiring preservation of specified reasonable legal notices or
author attributions in that material or in the Appropriate Legal
Notices displayed by works containing it; or
c) Prohibiting misrepresentation of the origin of that material, or
requiring that modified versions of such material be marked in
reasonable ways as different from the original version; or
d) Limiting the use for publicity purposes of names of licensors or
authors of the material; or
e) Declining to grant rights under trademark law for use of some
trade names, trademarks, or service marks; or
f) Requiring indemnification of licensors and authors of that
material by anyone who conveys the material (or modified versions of
it) with contractual assumptions of liability to the recipient, for
any liability that these contractual assumptions directly impose on
those licensors and authors.
All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10. If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term. If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
finally terminates your license, and (b) permanently, if the copyright
holder fails to notify you of the violation by some reasonable means
prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
run a copy of the Program. Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
modify any covered work. These actions infringe copyright if you do
not accept this License. Therefore, by modifying or propagating a
covered work, you indicate your acceptance of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
{one line to give the program's name and a brief idea of what it does.}
Copyright (C) {year} {name of author}
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
{project} Copyright (C) {year} {fullname}
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

1
app/build.gradle.kts
View File

@@ -80,6 +80,7 @@ dependencies {
implementation(libs.androidx.navigation.compose)
implementation(libs.androidx.datastore.preferences)
implementation(libs.okhttp)
implementation(libs.blessed.kotlin)
implementation(libs.kotlinx.serialization.json)
implementation(libs.androidx.room.runtime)
implementation(libs.androidx.room.ktx)

6
app/src/main/AndroidManifest.xml
View File

@@ -5,6 +5,12 @@
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<!-- BT-våg (openScale-drivrutiner). minSdk 31 → bara de nya BLE-permissionerna behövs. -->
<uses-permission android:name="android.permission.BLUETOOTH_SCAN"
android:usesPermissionFlags="neverForLocation" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-feature android:name="android.hardware.bluetooth_le" android:required="false" />
<application
android:name=".FitnessDroidApplication"
android:label="@string/app_name"

113
app/src/main/java/com/health/openscale/core/bluetooth/ScaleCommunicator.kt Normal file
View File

@@ -0,0 +1,113 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth
import androidx.compose.runtime.Composable
import com.health.openscale.core.bluetooth.data.ScaleMeasurement
import com.health.openscale.core.bluetooth.data.ScaleUser
import kotlinx.coroutines.flow.SharedFlow
import kotlinx.coroutines.flow.StateFlow
/**
* Domain events emitted by a [ScaleCommunicator].
*
* Notes for broadcast-only devices (advertisement parsing, no GATT):
* - The adapter emits [Listening] when scanning starts for the target MAC.
* - When a final (stabilized) measurement was published and scanning stops, it emits [BroadcastComplete].
* - For such devices, [Connected] is typically never emitted.
*/
sealed class BluetoothEvent {
enum class UserInteractionType {
CHOOSE_USER,
ENTER_CONSENT
}
/** Emitted when scanning starts for a broadcast-only device. */
data class Listening(val deviceAddress: String) : BluetoothEvent()
/** Emitted after a broadcast-only flow has completed (e.g., stabilized measurement parsed). */
data class BroadcastComplete(val deviceAddress: String) : BluetoothEvent()
/** Emitted when a GATT connection has been established. */
data class Connected(val deviceName: String, val deviceAddress: String) : BluetoothEvent()
/** Emitted when an existing GATT connection has been disconnected. */
data class Disconnected(val deviceAddress: String, val reason: String? = null) : BluetoothEvent()
/** Emitted when a connection attempt to a device failed. */
data class ConnectionFailed(val deviceAddress: String, val error: String) : BluetoothEvent()
/** Emitted when a parsed measurement is available. */
data class MeasurementReceived(
val measurement: ScaleMeasurement,
val deviceAddress: String
) : BluetoothEvent()
/** Emitted for generic device-related errors. */
data class Error(val deviceAddress: String, val error: String) : BluetoothEvent()
/** Emitted for miscellaneous device/user-visible messages. */
data class DeviceMessage(val message: String, val deviceAddress: String) : BluetoothEvent()
/** Emitted when user interaction is required (e.g., pick user, enter consent code). */
data class UserInteractionRequired(
val deviceIdentifier: String,
val data: Any?,
val interactionType: UserInteractionType,
) : BluetoothEvent()
}
/**
* A generic interface for communicating with Bluetooth scales.
* Implementations may be GATT-based or broadcast-only (advertisement parsing).
*/
interface ScaleCommunicator {
/** Indicates whether a connection attempt (or scan for broadcast devices) is in progress. */
val isConnecting: StateFlow<Boolean>
/** Indicates whether a GATT connection is active. For broadcast-only devices this is always `false`. */
val isConnected: StateFlow<Boolean>
/** Start communicating with a device identified by [address]. Binds the session to [scaleUser]. */
fun connect(address: String, scaleUser: ScaleUser?)
/** Terminate the current session (disconnect or stop scanning). */
fun disconnect()
/** Request a measurement (if supported; some devices only push asynchronously). */
fun requestMeasurement()
/**
* Renders the device-specific configuration UI.
* This allows the device handler to inject custom settings fields
* (like bind keys or user slots) into the settings screen.
*/
@Composable
fun DeviceConfigurationUi()
/** Stream of [BluetoothEvent] emitted by the communicator. */
fun getEventsFlow(): SharedFlow<BluetoothEvent>
/** Deliver feedback for a previously requested user interaction. */
suspend fun processUserInteractionFeedback(
interactionType: BluetoothEvent.UserInteractionType,
appUserId: Int,
feedbackData: Any
)
}

172
app/src/main/java/com/health/openscale/core/bluetooth/ScaleFactory.kt Normal file
View File

@@ -0,0 +1,172 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* FitnessDroid-anpassning: Hilt-DI borttagen (manuell DI), och handler-listan
* innehåller än så länge bara de drivrutiner som portats. Fler portas från
* openScale allteftersom — behåll upstream-ordningen när listan växer
* (första matchande handler vinner).
*/
package com.health.openscale.core.bluetooth
import android.content.Context
import com.health.openscale.core.bluetooth.scales.DebugGattHandler
import com.health.openscale.core.bluetooth.scales.DeviceSupport
import com.health.openscale.core.bluetooth.scales.ExingtechY1Handler
import com.health.openscale.core.bluetooth.scales.GattScaleAdapter
import com.health.openscale.core.bluetooth.scales.BroadcastScaleAdapter
import com.health.openscale.core.bluetooth.scales.LinkMode
import com.health.openscale.core.bluetooth.scales.ScaleDeviceHandler
import com.health.openscale.core.bluetooth.scales.SppScaleAdapter
import com.health.openscale.core.bluetooth.scales.TuningProfile
import com.health.openscale.core.facade.MeasurementFacade
import com.health.openscale.core.facade.SettingsFacade
import com.health.openscale.core.facade.UserFacade
import com.health.openscale.core.service.ScannedDeviceInfo
import com.health.openscale.core.utils.LogManager
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.firstOrNull
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
import kotlin.time.Duration.Companion.milliseconds
/**
* Factory class responsible for creating appropriate [ScaleCommunicator] instances
* for different Bluetooth scale devices.
*/
class ScaleFactory(
private val applicationContext: Context,
private val settingsFacade: SettingsFacade,
private val measurementFacade: MeasurementFacade,
private val userFacade: UserFacade,
) {
private val TAG = "ScaleHandlerFactory"
private val modernKotlinHandlers: List<ScaleDeviceHandler> = createHandlers()
companion object {
/**
* Builds the list of modern Kotlin-based device handlers.
*
* Order matters: [createCommunicator] returns the FIRST handler whose
* [ScaleDeviceHandler.supportFor] is non-null.
*/
internal fun createHandlers(): List<ScaleDeviceHandler> = listOf(
// Portade från openScale hittills:
ExingtechY1Handler(), // Biltema 84-1002 (PT-727) annonserar som "VScale"
)
}
/**
* Reads the current value of a settings [Flow] from a non-suspending context.
*/
private fun <T> readSettingBlocking(flow: Flow<T>): T? = runCatching {
runBlocking(Dispatchers.IO) {
withTimeout(250.milliseconds) { flow.firstOrNull() }
}
}.getOrNull()
private fun createModernCommunicator(
handler: ScaleDeviceHandler,
support: DeviceSupport
): ScaleCommunicator? {
val effectiveTuning: TuningProfile = run {
val saved: String? = readSettingBlocking(settingsFacade.savedBluetoothTuneProfile)
saved?.let { runCatching { TuningProfile.valueOf(it) }.getOrNull() }
?: support.tuningProfile
}
return when (support.linkMode) {
LinkMode.CONNECT_GATT ->
GattScaleAdapter(
applicationContext,
settingsFacade,
measurementFacade,
userFacade,
handler,
effectiveTuning
)
LinkMode.BROADCAST_ONLY ->
BroadcastScaleAdapter(
applicationContext,
settingsFacade,
measurementFacade,
userFacade,
handler,
effectiveTuning
)
LinkMode.CLASSIC_SPP ->
SppScaleAdapter(
applicationContext,
settingsFacade,
measurementFacade,
userFacade,
handler,
effectiveTuning
)
}
}
/**
* Creates the most suitable [ScaleCommunicator] for the given scanned device.
*/
fun createCommunicator(deviceInfo: ScannedDeviceInfo): ScaleCommunicator? {
val primaryIdentifier = deviceInfo.name
LogManager.d(TAG, "createCommunicator: Searching for communicator for '${primaryIdentifier}' (${deviceInfo.address}). Handler hint: '${deviceInfo.determinedHandlerDisplayName}'")
if (readSettingBlocking(settingsFacade.developerModeEnabled) == true) {
LogManager.i(TAG, "Developer mode active → routing '$primaryIdentifier' to DebugGattHandler. No measurement will be stored.")
return createModernCommunicator(DebugGattHandler(), DebugGattHandler.SUPPORT)
}
for (handler in modernKotlinHandlers) {
val support = handler.supportFor(deviceInfo)
if (support != null) {
LogManager.i(TAG, "Modern handler '${support.displayName}' supports '$primaryIdentifier'.")
val modern = createModernCommunicator(handler, support)
if (modern != null) {
LogManager.i(TAG, "Modern communicator '${modern.javaClass.simpleName}' created for '$primaryIdentifier' with linkMode=${support.linkMode}.")
return modern
}
LogManager.w(TAG, "Modern handler '${support.displayName}' supports '$primaryIdentifier', but no communicator is available.")
}
}
LogManager.w(TAG, "No suitable communicator found for device (name: '${deviceInfo.name}', address: '${deviceInfo.address}', handler hint: '${deviceInfo.determinedHandlerDisplayName}').")
return null
}
fun getDeviceSupportFor(name: String, address: String): DeviceSupport? {
val info = ScannedDeviceInfo(name, address, 0, emptyList(), null)
return modernKotlinHandlers.firstNotNullOfOrNull { it.supportFor(info) }
}
/**
* Checks if any known handler can theoretically support the given device.
*/
fun getSupportingHandlerInfo(deviceInfo: ScannedDeviceInfo): Pair<Boolean, String?> {
for (handler in modernKotlinHandlers) {
val support = handler.supportFor(deviceInfo)
if (support != null) return true to support.displayName
}
return false to null
}
}

75
app/src/main/java/com/health/openscale/core/bluetooth/data/ScaleMeasurement.kt Normal file
View File

@@ -0,0 +1,75 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth.data
import com.health.openscale.core.data.WeightUnit
import java.util.Date
/**
* Represents a single measurement record from a scale, potentially combined from multiple BLE packets.
*/
data class ScaleMeasurement(
var userId: Int = 0xFF, // openScale's internal app user ID
var dateTime: Date? = null,
var weight: Float = 0.0f, // must be in kg
var fat: Float = 0.0f, // must be in percentage
var water: Float = 0.0f, // must be in percentage
var muscle: Float = 0.0f, // must be in percentage
var visceralFat: Float = 0.0f, // must be in percentage
var bone: Float = 0.0f, // must be in kg
var lbm : Float = 0.0f, // must be in kg
var bmr: Float = 0.0f, // Basal Metabolic Rate in kcal
var heartRate: Int = 0, // must be bpm
var impedance: Double = 0.0, // Ohms — high-frequency band when the scale is dual-band
var impedanceLow: Double = 0.0, // Ohms — low-frequency band; 0 when not reported
var ecw: Float = 0.0f, // Extracellular water, % of body weight
var icw: Float = 0.0f, // Intracellular water, % of body weight
var protein: Float = 0.0f, // Protein, % of body weight
var bcm: Float = 0.0f, // Body cell mass, kg
) {
// --- Utility methods ---
fun hasWeight(): Boolean = this.weight > 0f
fun mergeWith(other: ScaleMeasurement) = apply {
if (other.weight > 0f && this.weight <= 0f) this.weight = other.weight
if (other.fat > 0f && this.fat <= 0f) this.fat = other.fat
if (other.water > 0f && this.water <= 0f) this.water = other.water
if (other.muscle > 0f && this.muscle <= 0f) this.muscle = other.muscle
if (other.visceralFat > 0f && this.visceralFat <= 0f) this.visceralFat = other.visceralFat
if (other.bone > 0f && this.bone <= 0f) this.bone = other.bone
if (other.lbm > 0f && this.lbm <= 0f) this.lbm = other.lbm
if (other.bmr > 0f && this.bmr <= 0f) this.bmr = other.bmr
if (other.heartRate > 0f && this.heartRate <= 0f) this.heartRate = other.heartRate
if (other.impedance > 0.0 && this.impedance <= 0.0) this.impedance = other.impedance
if (other.impedanceLow > 0.0 && this.impedanceLow <= 0.0) this.impedanceLow = other.impedanceLow
if (other.ecw > 0f && this.ecw <= 0f) this.ecw = other.ecw
if (other.icw > 0f && this.icw <= 0f) this.icw = other.icw
if (other.protein > 0f && this.protein <= 0f) this.protein = other.protein
if (other.bcm > 0f && this.bcm <= 0f) this.bcm = other.bcm
if (other.userId != 0xFF &&
(this.userId == 0xFF || this.userId == -1)) { // -1 was common init value
this.userId = other.userId
}
if (this.dateTime == null && other.dateTime != null) this.dateTime = other.dateTime
}
}

65
app/src/main/java/com/health/openscale/core/bluetooth/data/ScaleUser.kt Normal file
View File

@@ -0,0 +1,65 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth.data
import com.health.openscale.core.data.ActivityLevel
import com.health.openscale.core.data.GenderType
import com.health.openscale.core.data.WeightUnit
import java.util.Calendar
import java.util.Date
data class ScaleUser (
var id: Int = 0,
var userName: String = "",
var birthday: Date = Date(),
var bodyHeight: Float = -1f, // always in cm
var gender: GenderType = GenderType.MALE,
var initialWeight: Float = 0f, // always in kg
var goalWeight: Float = 0f, // always in kg
var scaleUnit: WeightUnit = WeightUnit.KG,
var activityLevel: ActivityLevel = ActivityLevel.SEDENTARY
){
fun getAge(todayDate: Date?): Int {
val calToday = Calendar.getInstance()
if (todayDate != null) {
calToday.setTime(todayDate)
}
val calBirthday = Calendar.getInstance()
calBirthday.setTime(birthday)
return yearsBetween(calBirthday, calToday)
}
val age: Int
get() = getAge(null)
private fun yearsBetween(start: Calendar, end: Calendar): Int {
var years = end.get(Calendar.YEAR) - start.get(Calendar.YEAR)
val startMonth = start.get(Calendar.MONTH)
val endMonth = end.get(Calendar.MONTH)
if (endMonth < startMonth
|| (endMonth == startMonth
&& end.get(Calendar.DAY_OF_MONTH) < start.get(Calendar.DAY_OF_MONTH))
) {
years -= 1
}
return years
}
}

249
app/src/main/java/com/health/openscale/core/bluetooth/scales/BroadcastScaleAdapter.kt Normal file
View File

@@ -0,0 +1,249 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth.scales
import android.bluetooth.le.ScanResult
import android.os.SystemClock
import androidx.compose.runtime.Composable
import eu.brassepc.fitnessdroid.R
import com.health.openscale.core.bluetooth.BluetoothEvent
import com.health.openscale.core.bluetooth.data.ScaleUser
import com.health.openscale.core.facade.MeasurementFacade
import com.health.openscale.core.facade.SettingsFacade
import com.health.openscale.core.facade.UserFacade
import com.health.openscale.core.utils.LogManager
import com.welie.blessed.BluetoothCentralManager
import com.welie.blessed.BluetoothCentralManagerCallback
import com.welie.blessed.BluetoothPeripheral
import kotlinx.coroutines.Job
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import java.util.UUID
import kotlin.time.Duration.Companion.milliseconds
// -------------------------------------------------------------------------------------------------
// Broadcast adapter (no GATT)
// - uses Blessed to scan for a specific address and forwards advertisements to handler.onAdvertisement()
// - applies tuning: max scan window, retry/backoff, RSSI filter, packet de-dup, stabilization window
// - attaches handler with a no-op transport immediately on start
// -------------------------------------------------------------------------------------------------
class BroadcastScaleAdapter(
context: android.content.Context,
settingsFacade: SettingsFacade,
measurementFacade: MeasurementFacade,
userFacade: UserFacade,
handler: ScaleDeviceHandler,
profile: TuningProfile = TuningProfile.Balanced
) : ModernScaleAdapter(context, settingsFacade, measurementFacade, userFacade, handler) {
private val tuning: BleBroadcastTuning = profile.forBroadcast()
private lateinit var central: BluetoothCentralManager
private var broadcastAttached = false
private var scanTimeoutJob: Job? = null
private var attempt = 0
private var isScanning = false
// de-duplication: contentHash -> lastSeenMs
private val dedupSeen = LinkedHashMap<Int, Long>(64, 0.75f, true)
private var lastForwardAtMs = 0L
private fun now() = SystemClock.elapsedRealtime()
private val centralCallback = object : BluetoothCentralManagerCallback() {
override fun onDiscovered(peripheral: BluetoothPeripheral, scanResult: ScanResult) {
// Filter: only target MAC
if (peripheral.address != targetAddress) return
// Filter: optional RSSI threshold
val rssi = scanResult.rssi
tuning.minRssiDbm?.let { if (rssi < it) return }
// De-dup: collapse identical packets within packetDedupWindowMs
val bytes = scanResult.scanRecord?.bytes
LogManager.d(TAG,"Discovered advertisement from ${peripheral.address} RSSI=$rssi ${bytes?.toHexPreview(24)}")
val hash = contentHash(bytes, rssi)
val t = now()
val last = dedupSeen[hash]
if (last != null && (t - last) <= tuning.packetDedupWindowMs) {
LogManager.w(TAG, "Deduplicated packet hash=$hash from ${peripheral.address}")
return
}
dedupSeen[hash] = t
trimDedup(t)
// Attach handler as soon as we see the target device (if not already)
ensureAttached(peripheral.address)
// Optional stabilization: avoid forwarding bursts too quickly
if (t - lastForwardAtMs < tuning.stabilizeWindowMs) {
LogManager.w(TAG, "Skipping forwarding to handler (stabilize window) from ${peripheral.address}")
return
}
val user = selectedUserSnapshot ?: return
LogManager.d(TAG,"Forwarding advertisement to handler: ${peripheral.address} RSSI=$rssi ${bytes?.toHexPreview(24)}")
val action = handler.onAdvertisement(scanResult, user)
LogManager.d(TAG, "Handler returned $action for ${peripheral.address}")
when (action) {
BroadcastAction.IGNORED -> LogManager.d(TAG, "Advertisement IGNORED for ${peripheral.address}")
BroadcastAction.CONSUMED_KEEP_SCANNING -> {
LogManager.d(TAG, "Advertisement CONSUMED for ${peripheral.address}")
lastForwardAtMs = t
_events.tryEmit(
BluetoothEvent.DeviceMessage(
context.getString(R.string.bt_info_waiting_for_measurement),
peripheral.address
)
)
}
BroadcastAction.CONSUMED_STOP -> {
lastForwardAtMs = t
LogManager.d(TAG, "Measurement stabilized → BroadcastComplete for ${peripheral.address}")
_events.tryEmit(BluetoothEvent.BroadcastComplete(peripheral.address))
stopScanInternal()
cleanup()
broadcastAttached = false
}
}
}
}
@Composable
override fun DeviceConfigurationUi() {
// Delegate to the actual protocol handler
handler.DeviceConfigurationUi()
}
private fun ensureCentral() {
if (!::central.isInitialized) {
central = BluetoothCentralManager(context, centralCallback, mainHandler)
}
}
private fun ensureAttached(address: String) {
if (broadcastAttached) return
val driverSettings = FacadeDriverSettings(
facade = settingsFacade,
scope = scope,
handlerNamespace = handler::class.simpleName ?: "Handler"
)
handler.attach(noopTransport, appCallbacks, driverSettings, dataProvider, scope)
broadcastAttached = true
_events.tryEmit(BluetoothEvent.Listening(address))
}
private fun startScanAttempt(address: String) {
// reset per-attempt state
isScanning = true
lastForwardAtMs = 0
dedupSeen.clear()
// Blessed does not expose ScanSettings directly; we emulate tuning at our level
try {
central.scanForPeripheralsWithAddresses(setOf(address))
LogManager.d(TAG, "Broadcast scan started (attempt ${attempt + 1}/${tuning.common.maxRetries}) for $address")
} catch (e: Exception) {
LogManager.e(TAG, "Failed to start broadcast scan: ${e.message}", e)
_events.tryEmit(BluetoothEvent.ConnectionFailed(address, e.message ?: context.getString(R.string.bt_error_generic)))
cleanup()
return
}
// Arm scan timeout for this attempt
scanTimeoutJob?.cancel()
scanTimeoutJob = scope.launch {
delay(tuning.maxScanMs.milliseconds)
if (!isScanning) return@launch
LogManager.w(TAG, "Broadcast scan timed out for $address")
stopScanInternal()
attempt++
if (attempt <= tuning.common.maxRetries) {
delay(tuning.common.retryBackoffMs.milliseconds)
startScanAttempt(address)
} else {
cleanup()
// keep attached? we detach to be consistent with failure
runCatching { handler.handleDisconnected() }
runCatching { handler.detach() }
broadcastAttached = false
}
}
}
private fun stopScanInternal() {
scanTimeoutJob?.cancel(); scanTimeoutJob = null
runCatching { if (::central.isInitialized) central.stopScan() }
isScanning = false
lastDisconnectAtMs = now()
}
private fun trimDedup(t: Long) {
// simple time-based eviction
val it = dedupSeen.entries.iterator()
while (it.hasNext()) {
val e = it.next()
if (t - e.value > tuning.packetDedupWindowMs) it.remove()
else break // map is access-ordered, earliest first
}
}
private fun contentHash(bytes: ByteArray?, rssi: Int): Int {
if (bytes == null || bytes.isEmpty()) return rssi // fallback
// A lightweight rolling hash (faster than Arrays.hashCode in hot path)
var h = 1125899907
for (b in bytes) h = (h * 131) xor (b.toInt() and 0xFF)
// mix in coarse rssi bucket to avoid treating level-only jitter as new data
val bucket = (rssi / 3) // bucketize
return (h shl 1) xor bucket
}
private val noopTransport = object : ScaleDeviceHandler.Transport {
override fun setNotifyOn(service: UUID, characteristic: UUID) {}
override fun write(service: UUID, characteristic: UUID, payload: ByteArray, withResponse: Boolean) {}
override fun read(service: UUID, characteristic: UUID) {}
override fun disconnect() { doDisconnect() }
override fun getPeripheral(): BluetoothPeripheral? = null
override fun hasCharacteristic(service: UUID, characteristic: UUID): Boolean = false
}
override fun doConnect(address: String, selectedUser: ScaleUser) {
ensureCentral()
// Attach early so UI can show “Listening…”
ensureAttached(address)
_isConnecting.value = false
_isConnected.value = false
attempt = 0
startScanAttempt(address)
}
override fun doDisconnect() {
stopScanInternal()
runCatching { handler.handleDisconnected() }
runCatching { handler.detach() }
broadcastAttached = false
}
}

193
app/src/main/java/com/health/openscale/core/bluetooth/scales/DebugGattHandler.kt Normal file
View File

@@ -0,0 +1,193 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
package com.health.openscale.core.bluetooth.scales
import android.bluetooth.BluetoothGattCharacteristic
import com.health.openscale.core.bluetooth.data.ScaleUser
import com.health.openscale.core.service.ScannedDeviceInfo
import java.util.Locale
import java.util.UUID
/**
* ## DebugGattHandler
*
* A pure **inspection** handler that:
*
* - Only activates while developer mode is enabled in the Bluetooth settings; it is not part of
* the handler registry and never claims a device on its own.
* - On connect, **dumps the full GATT table** (all services and characteristics) by
* asking the adapter/transport for the current `BluetoothPeripheral`.
* - Optionally performs a few safe reads/subscriptions on common services to trigger
* some traffic (helpful to verify notifications).
* - Logs **every incoming notification** with a compact hex & ASCII preview.
*
* This handler **never publishes measurements** and is intended solely for diagnostics.
*
* ### Adapter requirement
* The adapter/transport must expose `debugGetPeripheral(): BluetoothPeripheral?`.
* In `GattScaleAdapter`, implement it by returning the current `BluetoothPeripheral`.
*
* ### Why this lives here
* We keep all formatting, pretty-printing, and logging **inside this handler**, while
* the adapter stays minimal and unopinionated.
*/
class DebugGattHandler : ScaleDeviceHandler() {
companion object {
/**
* The support descriptor this handler runs with. Exposed because the handler is no longer
* part of the registry: [com.health.openscale.core.bluetooth.ScaleFactory] instantiates it
* directly when developer mode is on and needs the descriptor to pick the adapter.
*/
val SUPPORT = DeviceSupport(
displayName = "Debug",
capabilities = emptySet(), // no functional features
implemented = emptySet(),
tuningProfile = TuningProfile.Balanced,
linkMode = LinkMode.CONNECT_GATT
)
}
/**
* Never claims a device by itself. Developer mode is a separate setting
* ([com.health.openscale.core.facade.SettingsFacade.developerModeEnabled]); routing it through
* the device name used to overwrite the saved scale's identity, which silently broke the
* pairing (issue #1478).
*/
override fun supportFor(device: ScannedDeviceInfo): DeviceSupport? = null
/**
* On connect:
* 1) Dump the **entire** GATT service/characteristic tree.
* 2) Optionally poke a few common characteristics (best-effort).
* 3) Arm light-weight subscriptions to typical measurement characteristics,
* if present (best-effort; errors are logged).
*/
override fun onConnected(user: ScaleUser) {
logD("Connected in Debug mode. Dumping full GATT services/characteristics…")
dumpAllGatt()
// --- Optional sanity probes (best-effort; they can fail silently) -----
// Generic Access: Device Name
readSafe(uuid16(0x1800), uuid16(0x2A00))
// Device Information: Manufacturer / Model / FW / SW
readSafe(uuid16(0x180A), uuid16(0x2A29))
readSafe(uuid16(0x180A), uuid16(0x2A24))
readSafe(uuid16(0x180A), uuid16(0x2A26))
readSafe(uuid16(0x180A), uuid16(0x2A28))
// Battery Level
readSafe(uuid16(0x180F), uuid16(0x2A19))
// Subscribe to common measurement characteristics if present
setNotifySafe(uuid16(0x181D), uuid16(0x2A9D)) // Weight Scale -> Weight Measurement
setNotifySafe(uuid16(0x181B), uuid16(0x2A9C)) // Body Comp -> Body Composition Measurement
logD("Debug handler armed. Incoming NOTIFY frames will be logged; no data is stored.")
}
/**
* Every incoming notification is logged in a concise form:
* - Pretty UUID (16-bit when possible)
* - Hex preview (up to 64 bytes)
* - ASCII preview (non-printables as '?')
*/
override fun onNotification(characteristic: UUID, data: ByteArray, user: ScaleUser) {
val hex = data.toHexPreview(64)
val ascii = data.toAsciiPreview(64)
logD("NOTIFY chr=${prettyUuid(characteristic)} $hex ascii=$ascii")
}
// ---------------------------------------------------------------------------------------------
// Dump utilities
// ---------------------------------------------------------------------------------------------
/**
* Dump all discovered GATT services and their characteristics (with property flags).
* Uses the transport's `debugGetPeripheral()` hook to access the raw peripheral.
*/
private fun dumpAllGatt() {
val peripheral = getPeripheral()
if (peripheral == null) {
logD("No peripheral available yet (transport.debugGetPeripheral() returned null).")
return
}
val services = peripheral.services
logD("=== GATT Service Dump BEGIN ===")
if (services.isEmpty()) {
logD( "(no services)")
logD( "=== GATT Service Dump END ===")
return
}
for (svc in services) {
logD( "Service ${prettyUuid(svc.uuid)}")
val chars = svc.characteristics ?: emptyList()
for (ch in chars) {
logD(" └─ Char ${prettyUuid(ch.uuid)} props=${propsToString(ch.properties)}"
)
}
}
logD("=== GATT Service Dump END ===")
}
// ---------------------------------------------------------------------------------------------
// Safe wrappers (never throw; best-effort operations)
// ---------------------------------------------------------------------------------------------
private fun setNotifySafe(service: UUID, characteristic: UUID) {
logD("→ setNotifyOn svc=${prettyUuid(service)} chr=${prettyUuid(characteristic)}")
runCatching { setNotifyOn(service, characteristic) }
.onFailure { logD("setNotifyOn failed: ${it.message ?: it::class.simpleName}") }
}
private fun readSafe(service: UUID, characteristic: UUID) {
logD("→ read svc=${prettyUuid(service)} chr=${prettyUuid(characteristic)} (best effort)")
runCatching { readFrom(service, characteristic) }
.onFailure { logD("read failed: ${it.message ?: it::class.simpleName}") }
}
// ---------------------------------------------------------------------------------------------
// Pretty-print helpers
// ---------------------------------------------------------------------------------------------
/**
* Convert a standard 128-bit UUID with the Bluetooth base into a compact **0xNNNN** form.
* Leaves full UUIDs intact for vendor/custom values.
*/
private fun prettyUuid(u: UUID): String {
val s = u.toString().lowercase(Locale.ROOT)
return if (s.startsWith("0000") && s.endsWith("-0000-1000-8000-00805f9b34fb"))
"0x" + s.substring(4, 8)
else
s
}
/**
* Turn Android GATT property flags into a readable pipe-separated string.
* Example: `READ|WRITE_NR|NOTIFY|INDICATE`
*/
private fun propsToString(p: Int): String {
val flags = mutableListOf<String>()
if ((p and BluetoothGattCharacteristic.PROPERTY_READ) != 0) flags += "READ"
if ((p and BluetoothGattCharacteristic.PROPERTY_WRITE) != 0) flags += "WRITE"
if ((p and BluetoothGattCharacteristic.PROPERTY_WRITE_NO_RESPONSE) != 0) flags += "WRITE_NR"
if ((p and BluetoothGattCharacteristic.PROPERTY_NOTIFY) != 0) flags += "NOTIFY"
if ((p and BluetoothGattCharacteristic.PROPERTY_INDICATE) != 0) flags += "INDICATE"
if ((p and BluetoothGattCharacteristic.PROPERTY_SIGNED_WRITE) != 0) flags += "SIGNED"
if ((p and BluetoothGattCharacteristic.PROPERTY_BROADCAST) != 0) flags += "BROADCAST"
if ((p and BluetoothGattCharacteristic.PROPERTY_EXTENDED_PROPS) != 0) flags += "EXT"
return if (flags.isEmpty()) "0" else flags.joinToString("|")
}
}

138
app/src/main/java/com/health/openscale/core/bluetooth/scales/ExingtechY1Handler.kt Normal file
View File

@@ -0,0 +1,138 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth.scales
import eu.brassepc.fitnessdroid.R
import com.health.openscale.core.bluetooth.data.ScaleMeasurement
import com.health.openscale.core.bluetooth.data.ScaleUser
import com.health.openscale.core.service.ScannedDeviceInfo
import com.health.openscale.core.utils.ConverterUtils
import java.util.Date
import java.util.Locale
import java.util.UUID
/**
* Handler for Exingtech Y1 scales (often advertising as "VScale").
*
* Protocol:
* - Custom Service: f433bd80-75b8-11e2-97d9-0002a5d5c51b
* - Notify Characteristic: 1a2ea400-75b9-11e2-be05-0002a5d5c51b
* - Write Characteristic: 29f11080-75b9-11e2-8bf6-0002a5d5c51b
*
* Flow:
* 1) Enable NOTIFY on data characteristic.
* 2) Write user block: [0x10, userId, gender(0=male/1=female), age, height(cm)].
* 3) Wait for a 20-byte result frame; the first one may only contain weight.
* Publish when body composition (fat) is present (data[6] != 0xFF).
*/
class ExingtechY1Handler : ScaleDeviceHandler() {
private val SERVICE: UUID =
UUID.fromString("f433bd80-75b8-11e2-97d9-0002a5d5c51b")
private val CHAR_NOTIFY: UUID =
UUID.fromString("1a2ea400-75b9-11e2-be05-0002a5d5c51b")
private val CHAR_CMD: UUID =
UUID.fromString("29f11080-75b9-11e2-8bf6-0002a5d5c51b")
override fun supportFor(device: ScannedDeviceInfo): DeviceSupport? {
val name = device.name.lowercase(Locale.US)
val byName = (name == "vscale")
val byService = device.serviceUuids.any {
it.equals(SERVICE)
}
if (!byName && !byService) return null
val caps = setOf(
DeviceCapability.BODY_COMPOSITION,
DeviceCapability.USER_SYNC
)
return DeviceSupport(
displayName = "Exingtech Y1 (VScale)",
capabilities = caps,
implemented = caps,
linkMode = LinkMode.CONNECT_GATT
)
}
override fun onConnected(user: ScaleUser) {
// Enable notifications for result frames
setNotifyOn(SERVICE, CHAR_NOTIFY)
// Send user block (id is truncated to 1 byte like legacy driver)
val userIdOneByte = (user.id and 0xFF).toByte()
val gender = if (user.gender.isMale()) 0x00 else 0x01
val age = (user.age and 0xFF).toByte()
val height = (user.bodyHeight.toInt() and 0xFF).toByte()
val cmd = byteArrayOf(
0x10,
userIdOneByte,
gender.toByte(),
age,
height
)
writeTo(SERVICE, CHAR_CMD, cmd, withResponse = true)
// Prompt user
userInfo(R.string.bt_info_step_on_scale)
}
override fun onNotification(characteristic: UUID, data: ByteArray, user: ScaleUser) {
if (characteristic != CHAR_NOTIFY) return
if (data.size != 20) return
// The first notify can be "weight only"; full composition follows.
// In legacy code we waited until fat != 0xFF.
val fatHi = data[6]
if (fatHi.toInt() and 0xFF == 0xFF) {
logD("VScale: weight-only frame, waiting for full composition…")
return
}
publish(parseMeasurement(data))
}
// --- Parsing --------------------------------------------------------------
private fun parseMeasurement(frame: ByteArray): ScaleMeasurement {
// Big-endian 16-bit fields, matching legacy ConverterUtils.fromUnsignedInt16Be
val weight = ConverterUtils.fromUnsignedInt16Be(frame, 4) / 10.0f
val fat = ConverterUtils.fromUnsignedInt16Be(frame, 6) / 10.0f
val water = ConverterUtils.fromUnsignedInt16Be(frame, 8) / 10.0f
val bone = ConverterUtils.fromUnsignedInt16Be(frame, 10) / 10.0f
val muscle = ConverterUtils.fromUnsignedInt16Be(frame, 12) / 10.0f
val visceralIndex = (frame[14].toInt() and 0xFF).toFloat()
// calorie (offset 15) and BMI (offset 17) exist but are computed by app; skip.
return ScaleMeasurement().apply {
dateTime = Date()
this.weight = weight
this.fat = fat
this.water = water
this.muscle = muscle
this.bone = bone
this.visceralFat = visceralIndex
}.also {
logD("VScale result kg=${it.weight} fat=${it.fat} water=${it.water} muscle=${it.muscle} bone=${it.bone} visc=${it.visceralFat}"
)
}
}
}

428
app/src/main/java/com/health/openscale/core/bluetooth/scales/GattScaleAdapter.kt Normal file
View File

@@ -0,0 +1,428 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth.scales
import android.bluetooth.BluetoothGattCharacteristic
import android.bluetooth.le.ScanResult
import android.content.Context
import android.os.SystemClock
import androidx.compose.runtime.Composable
import eu.brassepc.fitnessdroid.R
import com.health.openscale.core.bluetooth.BluetoothEvent
import com.health.openscale.core.bluetooth.data.ScaleUser
import com.health.openscale.core.facade.MeasurementFacade
import com.health.openscale.core.facade.SettingsFacade
import com.health.openscale.core.facade.UserFacade
import com.health.openscale.core.utils.LogManager
import com.welie.blessed.BluetoothCentralManager
import com.welie.blessed.BluetoothCentralManagerCallback
import com.welie.blessed.BluetoothPeripheral
import com.welie.blessed.BluetoothPeripheralCallback
import com.welie.blessed.ConnectionPriority
import com.welie.blessed.GattStatus
import com.welie.blessed.HciStatus
import com.welie.blessed.WriteType
import kotlinx.coroutines.CompletableDeferred
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlinx.coroutines.sync.Mutex
import kotlinx.coroutines.withTimeout
import java.util.UUID
import java.util.concurrent.ConcurrentHashMap
import kotlin.time.Duration.Companion.milliseconds
// -------------------------------------------------------------------------------------------------
// GATT adapter (BLE)
// - scans for a specific address and connects via Blessed
// - enables notifications, handles read/write with pacing (BleTuning)
// - forwards notifications to handler.onNotification()
// -------------------------------------------------------------------------------------------------
class GattScaleAdapter(
context: Context,
settingsFacade: SettingsFacade,
measurementFacade: MeasurementFacade,
userFacade: UserFacade,
handler: ScaleDeviceHandler,
profile: TuningProfile = TuningProfile.Balanced
) : ModernScaleAdapter(context, settingsFacade, measurementFacade, userFacade, handler) {
private val tuning: BleGattTuning = profile.forGatt()
private lateinit var central: BluetoothCentralManager
private var currentPeripheral: BluetoothPeripheral? = null
private val opQueue = Channel<suspend () -> Unit>(Channel.UNLIMITED)
private data class PendingOp(
val id: Long,
val deferred: CompletableDeferred<Unit>
)
private val deferredMap = ConcurrentHashMap<UUID, PendingOp>()
private var nextOpId = 0L
private val ioMutex = Mutex()
private var connectAttempts = 0
init {
// Worker coroutine processes queued BLE operations sequentially
scope.launch {
for (op in opQueue) {
// wait until BLE connection is established
while (!_isConnected.value) {
delay(10.milliseconds)
}
try {
ioMutex.lock()
op()
} catch (t: Throwable) {
LogManager.e(TAG, "BLE operation failed", t)
} finally {
ioMutex.unlock()
}
}
}
}
@Composable
override fun DeviceConfigurationUi() {
// Delegate to the actual protocol handler
handler.DeviceConfigurationUi()
}
private suspend fun ioGap(ms: Long) {
if (ms > 0) delay(ms.milliseconds)
}
// -------------------------------------------------------------------------------------------------
// Bluetooth central callbacks
// -------------------------------------------------------------------------------------------------
private val centralCallback = object : BluetoothCentralManagerCallback() {
override fun onDiscovered(peripheral: BluetoothPeripheral, scanResult: ScanResult) {
if (peripheral.address != targetAddress) return
LogManager.i(TAG, "Found $targetAddress → stop scan + connect")
central.stopScan()
scope.launch {
if (tuning.connectAfterScanDelayMs > 0) delay(tuning.connectAfterScanDelayMs.milliseconds)
central.connect(peripheral, peripheralCallback)
}
}
override fun onConnected(peripheral: BluetoothPeripheral) {
scope.launch {
currentPeripheral = peripheral
_isConnected.value = true
_isConnecting.value = false
_events.tryEmit(BluetoothEvent.Connected(peripheral.name, peripheral.address))
}
}
override fun onConnectionFailed(peripheral: BluetoothPeripheral, status: HciStatus) {
scope.launch {
LogManager.e(TAG, "Connection failed ${peripheral.address}: $status")
if (connectAttempts < tuning.common.maxRetries) {
val nextTry = connectAttempts + 1
_events.tryEmit(
BluetoothEvent.DeviceMessage(
context.getString(R.string.bt_info_reconnecting_try, nextTry, tuning.common.maxRetries),
peripheral.address
)
)
connectAttempts = nextTry
delay(tuning.common.retryBackoffMs.milliseconds)
runCatching { central.stopScan() }
central.scanForPeripheralsWithAddresses(setOf(peripheral.address))
_isConnecting.value = true
} else {
_events.tryEmit(BluetoothEvent.ConnectionFailed(peripheral.address, status.toString()))
cleanup()
}
}
}
override fun onDisconnected(peripheral: BluetoothPeripheral, status: HciStatus) {
scope.launch {
LogManager.i(TAG, "Disconnected ${peripheral.address}: $status")
runCatching { handler.handleDisconnected() }
runCatching { handler.detach() }
lastDisconnectAtMs = SystemClock.elapsedRealtime()
if (peripheral.address == targetAddress) {
_events.tryEmit(BluetoothEvent.Disconnected(peripheral.address, status.toString()))
cleanup()
}
}
}
}
// -------------------------------------------------------------------------------------------------
// Peripheral callback receives all GATT events
// -------------------------------------------------------------------------------------------------
private val peripheralCallback = object : BluetoothPeripheralCallback() {
override fun onServicesDiscovered(peripheral: BluetoothPeripheral) {
LogManager.d(TAG, "Services discovered for ${peripheral.address}")
currentPeripheral = peripheral
if (tuning.requestHighConnectionPriority) runCatching { peripheral.requestConnectionPriority(ConnectionPriority.HIGH) }
if (tuning.requestMtuBytes > 23) runCatching { peripheral.requestMtu(tuning.requestMtuBytes) }
val user = selectedUserSnapshot ?: run {
central.cancelConnection(peripheral); return
}
val driverSettings = FacadeDriverSettings(
facade = settingsFacade,
scope = scope,
handlerNamespace = handler::class.simpleName ?: "Handler"
)
handler.attach(transport, appCallbacks, driverSettings, dataProvider, scope)
handler.handleConnected(user)
}
override fun onCharacteristicWrite(
peripheral: BluetoothPeripheral,
value: ByteArray,
characteristic: BluetoothGattCharacteristic,
status: GattStatus
) {
LogManager.d(TAG,"\u2190 write response chr=${characteristic.uuid} len=${value.size} status=${status} ${value.toHexPreview(24)}")
deferredMap[characteristic.uuid]?.let { op ->
op.deferred.complete(Unit)
deferredMap.remove(characteristic.uuid)
}
}
override fun onNotificationStateUpdate(
peripheral: BluetoothPeripheral,
characteristic: BluetoothGattCharacteristic,
status: GattStatus
) {
LogManager.d(TAG,"\u2190 notify state chr=${characteristic.uuid} status=${status}")
deferredMap[characteristic.uuid]?.let { op ->
op.deferred.complete(Unit)
deferredMap.remove(characteristic.uuid)
}
}
override fun onCharacteristicUpdate(
peripheral: BluetoothPeripheral,
value: ByteArray,
characteristic: BluetoothGattCharacteristic,
status: GattStatus
) {
LogManager.d(TAG,"\u2190 received data chr=${characteristic.uuid} len=${value.size} status=${status} ${value.toHexPreview(24)}")
handler.handleNotification(characteristic.uuid, value)
deferredMap[characteristic.uuid]?.let { op ->
op.deferred.complete(Unit)
deferredMap.remove(characteristic.uuid)
}
}
}
// -------------------------------------------------------------------------------------------------
// Transport exposed to handler; operations are queued automatically
// -------------------------------------------------------------------------------------------------
private val transport = object : ScaleDeviceHandler.Transport {
override fun setNotifyOn(service: UUID, characteristic: UUID) {
opQueue.trySend {
val p = currentPeripheral ?: return@trySend
LogManager.d(TAG, "→ set notify on chr=$characteristic svc=$service")
val opId = ++nextOpId
val deferred = CompletableDeferred<Unit>()
deferredMap[characteristic] = PendingOp(opId, deferred)
val started = p.startNotify(service, characteristic)
if (!started) {
LogManager.w(TAG, "Failed to initiate notify for $characteristic")
// appCallbacks.onWarn(R.string.bt_warn_notify_failed, characteristic.toString())
deferred.complete(Unit)
deferredMap.remove(characteristic)
}
try {
// Wait with timeout from tuning
withTimeout(tuning.operationTimeoutMs.milliseconds) {
deferred.await()
}
} catch (_: Exception) {
LogManager.w(TAG, "Timeout waiting for notify on $characteristic")
} finally {
val current = deferredMap[characteristic]
if (current?.id == opId) {
deferredMap.remove(characteristic)
}
deferred.cancel()
}
ioGap(tuning.notifySetupDelayMs)
}
}
override fun write(service: UUID, characteristic: UUID, payload: ByteArray, withResponse: Boolean) {
opQueue.trySend {
val p = currentPeripheral ?: return@trySend
val ch = p.getCharacteristic(service, characteristic) ?: return@trySend
val opId = ++nextOpId
val deferred = CompletableDeferred<Unit>()
deferredMap[characteristic] = PendingOp(opId, deferred)
val supportsWriteNoResponse = ch.properties and BluetoothGattCharacteristic.PROPERTY_WRITE_NO_RESPONSE != 0
val supportsWriteResponse = ch.properties and BluetoothGattCharacteristic.PROPERTY_WRITE != 0
val type = when {
withResponse && supportsWriteResponse -> WriteType.WITH_RESPONSE
!withResponse && supportsWriteNoResponse -> WriteType.WITHOUT_RESPONSE
supportsWriteResponse -> {
LogManager.w(TAG, "Characteristic $characteristic does not support WITHOUT_RESPONSE, using WITH_RESPONSE instead")
WriteType.WITH_RESPONSE
}
supportsWriteNoResponse -> {
LogManager.w(TAG, "Characteristic $characteristic does not support WITH_RESPONSE, using WITHOUT_RESPONSE instead")
WriteType.WITHOUT_RESPONSE
}
else -> {
LogManager.w(TAG, "Characteristic $characteristic does not support writing")
return@trySend
}
}
ioGap(if (withResponse) tuning.writeWithResponseDelayMs else tuning.writeWithoutResponseDelayMs)
p.writeCharacteristic(service, characteristic, payload, type)
LogManager.d(TAG,"\u2192 write to chr=$characteristic svc=$service len=${payload.size} withResp=$withResponse ${payload.toHexPreview(24)}")
try {
withTimeout(tuning.operationTimeoutMs.milliseconds) {
deferred.await()
}
} catch (_: Throwable) {
LogManager.w(TAG, "Timeout waiting for write on $characteristic")
} finally {
val current = deferredMap[characteristic]
if (current?.id == opId) {
deferredMap.remove(characteristic)
}
deferred.cancel()
}
ioGap(tuning.postWriteDelayMs)
}
}
override fun read(service: UUID, characteristic: UUID) {
opQueue.trySend {
val p = currentPeripheral ?: return@trySend
p.getCharacteristic(service, characteristic) ?: return@trySend
val opId = ++nextOpId
val deferred = CompletableDeferred<Unit>()
deferredMap[characteristic] = PendingOp(opId, deferred)
p.readCharacteristic(service, characteristic)
LogManager.d(TAG,"\u2192 read from chr=$characteristic svc=$service")
try {
withTimeout(tuning.operationTimeoutMs.milliseconds) {
deferred.await()
}
} catch (_: Throwable) {
LogManager.w(TAG, "Timeout waiting for read on $characteristic")
} finally {
val current = deferredMap[characteristic]
if (current?.id == opId) {
deferredMap.remove(characteristic)
}
deferred.cancel()
}
ioGap(tuning.postReadDelayMs)
}
}
override fun disconnect() {
currentPeripheral?.let { central.cancelConnection(it) }
}
override fun getPeripheral(): BluetoothPeripheral? = currentPeripheral
override fun hasCharacteristic(service: UUID, characteristic: UUID): Boolean {
val p = currentPeripheral ?: return false
return p.getCharacteristic(service, characteristic) != null
}
}
// -------------------------------------------------------------------------------------------------
// Connection management
// -------------------------------------------------------------------------------------------------
override fun doConnect(address: String, selectedUser: ScaleUser) {
if (!::central.isInitialized) {
central = BluetoothCentralManager(context, centralCallback, mainHandler)
}
val sinceLastDisconnect = SystemClock.elapsedRealtime() - lastDisconnectAtMs
val waitMs = (tuning.common.reconnectCooldownMs - sinceLastDisconnect).coerceAtLeast(0)
connectAttempts = 0
_isConnected.value = false
_isConnecting.value = true
runCatching { central.stopScan() }
scope.launch {
if (waitMs > 0) delay(waitMs.milliseconds)
try {
central.scanForPeripheralsWithAddresses(setOf(address))
} catch (e: Exception) {
LogManager.e(TAG, "Failed to start scan/connect: ${e.message}", e)
_events.tryEmit(
BluetoothEvent.ConnectionFailed(
address,
e.message ?: context.getString(R.string.bt_error_generic)
)
)
cleanup()
}
}
}
override fun doDisconnect() {
runCatching { if (::central.isInitialized) central.stopScan() }
currentPeripheral?.let { runCatching { central.cancelConnection(it) } }
currentPeripheral = null
}
override fun close() {
// Stop accepting new BLE operations and release the Blessed central
// (its broadcast receivers) before the base cancels the coroutine scope,
// which terminates the busy-waiting op-queue worker.
runCatching { opQueue.close() }
runCatching { if (::central.isInitialized) central.close() }
super.close()
}
}

552
app/src/main/java/com/health/openscale/core/bluetooth/scales/ModernScaleAdapter.kt Normal file
View File

@@ -0,0 +1,552 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth.scales
import android.bluetooth.le.ScanSettings
import android.os.Handler
import android.os.Looper
import androidx.annotation.StringRes
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.SignalCellularAlt
import androidx.compose.material.icons.filled.SignalCellularAlt1Bar
import androidx.compose.material.icons.outlined.SignalCellularAlt2Bar
import androidx.compose.ui.graphics.vector.ImageVector
import eu.brassepc.fitnessdroid.R
import com.health.openscale.core.bluetooth.BluetoothEvent
import com.health.openscale.core.bluetooth.ScaleCommunicator
import com.health.openscale.core.bluetooth.data.ScaleMeasurement
import com.health.openscale.core.bluetooth.data.ScaleUser
import com.health.openscale.core.data.MeasurementTypeKey
import com.health.openscale.core.data.MeasurementValue
import com.health.openscale.core.data.UnitType
import com.health.openscale.core.data.User
import com.health.openscale.core.facade.MeasurementFacade
import com.health.openscale.core.facade.SettingsFacade
import com.health.openscale.core.facade.UserFacade
import com.health.openscale.core.model.MeasurementWithValues
import com.health.openscale.core.utils.ConverterUtils
import com.health.openscale.core.utils.LogManager
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.SupervisorJob
import kotlinx.coroutines.cancel
import kotlinx.coroutines.flow.MutableSharedFlow
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.SharedFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asSharedFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.flowOf
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
import kotlinx.coroutines.withTimeoutOrNull
import java.util.Date
import java.util.concurrent.ConcurrentHashMap
import kotlin.math.min
import kotlin.time.Duration.Companion.milliseconds
// -------------------------------------------------------------------------------------------------
// Shared tuning for BLE pacing & retry (used by GATT adapter).
// -------------------------------------------------------------------------------------------------
// Common knobs every link can use
data class CommonTuning(
val reconnectCooldownMs: Long = 2000,
val retryBackoffMs: Long = 1500,
val maxRetries: Int = 3
)
// GATT-specific
data class BleGattTuning(
val common: CommonTuning = CommonTuning(),
val notifySetupDelayMs: Long = 120,
val writeWithResponseDelayMs: Long = 80,
val writeWithoutResponseDelayMs: Long = 35,
val postWriteDelayMs: Long = 20,
val postReadDelayMs: Long = 20,
val connectAfterScanDelayMs: Long = 650,
val requestHighConnectionPriority: Boolean = false,
val requestMtuBytes: Int = 185,
val operationTimeoutMs: Long = 1000
)
// Broadcast scanner tuning
data class BleBroadcastTuning(
val common: CommonTuning = CommonTuning(),
val scanMode: Int = ScanSettings.SCAN_MODE_LOW_LATENCY,
val maxScanMs: Long = 20_000,
val restartBackoffMs: Long = 1500,
val packetDedupWindowMs: Long = 750,
val stabilizeWindowMs: Long = 1200,
val minRssiDbm: Int? = null // e.g. -90
)
// Classic SPP tuning
data class BtSppTuning(
val common: CommonTuning = CommonTuning(),
val connectTimeoutMs: Long = 10_000,
val readTimeoutMs: Long = 3000,
val writeChunkBytes: Int = 256,
val interChunkDelayMs: Long = 10,
val soKeepAlive: Boolean = true
)
enum class TuningProfile(
@param:StringRes val labelRes: Int,
val icon: ImageVector
) {
Conservative(
labelRes = R.string.tuning_conservative,
icon = Icons.Filled.SignalCellularAlt1Bar
),
Balanced(
labelRes = R.string.tuning_balanced,
icon = Icons.Outlined.SignalCellularAlt2Bar
),
Aggressive(
labelRes = R.string.tuning_aggressive,
icon = Icons.Filled.SignalCellularAlt
)
}
fun TuningProfile.forGatt(): BleGattTuning = when (this) {
TuningProfile.Balanced -> BleGattTuning(
common = CommonTuning(2200, 1500, 3),
notifySetupDelayMs = 120,
writeWithResponseDelayMs = 80,
writeWithoutResponseDelayMs = 35,
postWriteDelayMs = 20,
postReadDelayMs = 20,
connectAfterScanDelayMs = 650,
requestHighConnectionPriority = false,
requestMtuBytes = 185,
operationTimeoutMs = 1000
)
TuningProfile.Conservative -> BleGattTuning(
common = CommonTuning(2500, 1800, 3),
notifySetupDelayMs = 160,
writeWithResponseDelayMs = 100,
writeWithoutResponseDelayMs = 50,
postWriteDelayMs = 30,
postReadDelayMs = 30,
connectAfterScanDelayMs = 800,
requestHighConnectionPriority = false,
requestMtuBytes = 0,
operationTimeoutMs = 2000
)
TuningProfile.Aggressive -> BleGattTuning(
common = CommonTuning(1200, 1200, 2),
notifySetupDelayMs = 80,
writeWithResponseDelayMs = 60,
writeWithoutResponseDelayMs = 25,
postWriteDelayMs = 15,
postReadDelayMs = 15,
connectAfterScanDelayMs = 400,
requestHighConnectionPriority = true,
requestMtuBytes = 247,
operationTimeoutMs = 500
)
}
fun TuningProfile.forBroadcast(): BleBroadcastTuning = when (this) {
TuningProfile.Balanced -> BleBroadcastTuning(common = CommonTuning(2200,1500,3))
TuningProfile.Conservative -> BleBroadcastTuning(
common = CommonTuning(2500,1800,3),
scanMode = ScanSettings.SCAN_MODE_BALANCED,
maxScanMs = 30_000
)
TuningProfile.Aggressive -> BleBroadcastTuning(
common = CommonTuning(1200,1200,2),
scanMode = ScanSettings.SCAN_MODE_LOW_LATENCY,
maxScanMs = 15_000,
stabilizeWindowMs = 900
)
}
fun TuningProfile.forSpp(): BtSppTuning = when (this) {
TuningProfile.Balanced -> BtSppTuning()
TuningProfile.Conservative -> BtSppTuning(connectTimeoutMs = 12_000, interChunkDelayMs = 15)
TuningProfile.Aggressive -> BtSppTuning(connectTimeoutMs = 8_000, interChunkDelayMs = 5)
}
// -------------------------------------------------------------------------------------------------
// Small persisted driver settings wrapper backed by SettingsFacade (shared by all adapters).
// -------------------------------------------------------------------------------------------------
class FacadeDriverSettings(
private val facade: SettingsFacade,
private val scope: CoroutineScope,
handlerNamespace: String
) : ScaleDeviceHandler.DriverSettings {
private val prefix = "ble/$handlerNamespace/"
private val mem = ConcurrentHashMap<String, String>()
override fun getInt(key: String, default: Int): Int {
val k = prefix + key
mem[k]?.toIntOrNull()?.let { return it }
val v = runCatching {
runBlocking(Dispatchers.IO) { withTimeout(300.milliseconds) { facade.observeSetting(k, default).first() } }
}.getOrElse { default }
mem[k] = v.toString()
return v
}
override fun putInt(key: String, value: Int) {
val k = prefix + key
mem[k] = value.toString()
scope.launch { facade.saveSetting(k, value) }
}
override fun getString(key: String, default: String?): String? {
val k = prefix + key
mem[k]?.let { return it }
val raw = runCatching {
runBlocking(Dispatchers.IO) { withTimeout(300.milliseconds) { facade.observeSetting(k, default ?: "").first() } }
}.getOrElse { default ?: "" }
val result = if (raw.isEmpty() && default == null) null else raw
result?.let { mem[k] = it }
return result
}
override fun putString(key: String, value: String) {
val k = prefix + key
mem[k] = value
scope.launch { facade.saveSetting(k, value) }
}
override fun remove(key: String) {
val k = prefix + key
mem.remove(k)
scope.launch { facade.saveSetting(k, "") }
}
}
// -------------------------------------------------------------------------------------------------
// ModernScaleAdapter (abstract base)
// - Owns app integration, user/measurements snapshots, event streams, handler wiring.
// - Concrete subclasses implement link-specific connect/disconnect logic.
// -------------------------------------------------------------------------------------------------
@OptIn(ExperimentalCoroutinesApi::class)
abstract class ModernScaleAdapter(
protected val context: android.content.Context,
protected val settingsFacade: SettingsFacade,
protected val measurementFacade: MeasurementFacade,
protected val userFacade: UserFacade,
protected val handler: ScaleDeviceHandler
) : ScaleCommunicator, AutoCloseable {
protected val TAG = this::class.simpleName ?: "ModernScaleAdapter"
// ---- coroutine & lifecycle -----------------------------------------------------------------
protected val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
protected val mainHandler = Handler(Looper.getMainLooper())
// ---- session targeting ---------------------------------------------------------------------
protected var targetAddress: String? = null
protected var lastDisconnectAtMs: Long = 0L
// ---- UI streams ----------------------------------------------------------------------------
val _events = MutableSharedFlow<BluetoothEvent>(replay = 1, extraBufferCapacity = 8)
override fun getEventsFlow(): SharedFlow<BluetoothEvent> = _events.asSharedFlow()
protected val _isConnecting = MutableStateFlow(false)
override val isConnecting: StateFlow<Boolean> = _isConnecting.asStateFlow()
protected val _isConnected = MutableStateFlow(false)
override val isConnected: StateFlow<Boolean> = _isConnected.asStateFlow()
// ---- app snapshots for handler.DataProvider -------------------------------------------------
@Volatile protected var selectedUserSnapshot: ScaleUser? = null
@Volatile protected var usersSnapshot: List<ScaleUser> = emptyList()
@Volatile protected var lastSnapshot: Map<Int, ScaleMeasurement> = emptyMap()
init {
val driverSettings = FacadeDriverSettings(
facade = settingsFacade,
scope = scope,
handlerNamespace = handler.javaClass.simpleName
)
handler.attachSettings(driverSettings)
// Keep a *live* non-blocking snapshot of the current user.
scope.launch {
userFacade.observeSelectedUser().collect { u ->
selectedUserSnapshot = u?.let(::mapUser)
}
}
// Keep a *fresh enough* snapshot of users & their latest measurement.
scope.launch {
userFacade.observeAllUsers()
.flatMapLatest { users ->
usersSnapshot = users.map(::mapUser)
if (users.isEmpty()) {
flowOf(emptyMap())
} else {
combine(users.map { u -> measurementFacade.getMeasurementsForUser(u.id) }) { lists ->
val out = HashMap<Int, ScaleMeasurement>(users.size)
users.forEachIndexed { idx, u ->
val newest = lists[idx].maxByOrNull { it.measurement.timestamp }
mapMeasurement(newest)?.let { out[u.id] = it }
}
out
}
}
}
.collect { latestMap -> lastSnapshot = latestMap }
}
}
// ---- ScaleCommunicator entry points ---------------------------------------------------------
/**
* Template method: base validates input & selected user, then calls [doConnect].
* Many handlers expect a selected user from app state;
*/
final override fun connect(address: String, scaleUser: ScaleUser?) {
targetAddress = address
_isConnecting.value = true
scope.launch {
val user: ScaleUser? =
scaleUser
?: selectedUserSnapshot
?: withTimeoutOrNull(750.milliseconds) {
userFacade.observeSelectedUser().first()
}?.let(::mapUser)
if (user == null) {
_events.tryEmit(
BluetoothEvent.ConnectionFailed(
address,
context.getString(R.string.bt_error_no_user_selected)
)
)
_isConnecting.value = false
return@launch
}
runCatching {
doConnect(address, user)
}.onFailure { t ->
_events.tryEmit(
BluetoothEvent.ConnectionFailed(
address,
t.message ?: "—"
)
)
_isConnecting.value = false
}
}
}
/**
* Template method: calls [doDisconnect] and resets shared state.
*/
final override fun disconnect() {
doDisconnect()
cleanup()
}
/**
* Default UX helper for devices that only push data via NOTIFY or broadcasts.
* Subclasses can override if they can actively trigger measurement on device.
*/
override fun requestMeasurement() {
val addr = targetAddress ?: "unknown"
_events.tryEmit(
BluetoothEvent.DeviceMessage(
context.getString(R.string.bt_info_waiting_for_measurement),
addr
)
)
}
override suspend fun processUserInteractionFeedback(
interactionType: BluetoothEvent.UserInteractionType,
appUserId: Int,
feedbackData: Any
) {
scope.launch {
runCatching {
handler.onUserInteractionFeedback(interactionType, appUserId, feedbackData)
}.onFailure { t ->
val addr = targetAddress ?: "unknown"
LogManager.e(TAG, "Delivering user feedback failed: ${t.message}", t)
_events.tryEmit(
BluetoothEvent.DeviceMessage(
context.getString(R.string.bt_error_delivery_user_feedback, t.message ?: "—"),
addr
)
)
}
}
}
// ---- abstract link hooks -------------------------------------------------------------------
protected abstract fun doConnect(address: String, selectedUser: ScaleUser)
protected abstract fun doDisconnect()
// ---- callbacks & data provider for handlers ------------------------------------------------
protected val appCallbacks = object : ScaleDeviceHandler.Callbacks {
override fun onPublish(measurement: ScaleMeasurement) {
val addr = targetAddress ?: "unknown"
_events.tryEmit(BluetoothEvent.MeasurementReceived(measurement, addr))
}
override fun onInfo(@StringRes resId: Int, vararg args: Any) {
val addr = targetAddress ?: "unknown"
_events.tryEmit(BluetoothEvent.DeviceMessage(context.getString(resId, *args), addr))
}
override fun onWarn(@StringRes resId: Int, vararg args: Any) {
val addr = targetAddress ?: "unknown"
_events.tryEmit(BluetoothEvent.DeviceMessage(context.getString(resId, *args), addr))
}
override fun onError(@StringRes resId: Int, t: Throwable?, vararg args: Any) {
val addr = targetAddress ?: "unknown"
val msg = context.getString(resId, *args)
LogManager.e(TAG, msg, t)
_events.tryEmit(BluetoothEvent.DeviceMessage(msg, addr))
}
override fun onUserInteractionRequired(interactionType: BluetoothEvent.UserInteractionType, data: Any?) {
val addr = targetAddress ?: "unknown"
_events.tryEmit(BluetoothEvent.UserInteractionRequired(addr, data, interactionType))
}
override fun resolveString(@StringRes resId: Int, vararg args: Any): String =
context.getString(resId, *args)
}
protected val dataProvider = object : ScaleDeviceHandler.DataProvider {
override fun currentUser(): ScaleUser = selectedUserSnapshot
?: error("No selected user snapshot available")
override fun usersForDevice(): List<ScaleUser> = usersSnapshot
override fun lastMeasurementFor(userId: Int): ScaleMeasurement? = lastSnapshot[userId]
}
protected fun cleanup() {
_isConnected.value = false
_isConnecting.value = false
// keep targetAddress to allow higher layer to retry if wanted
}
override fun close() {
runCatching { scope.cancel() }
}
// ---- mapping helpers (core -> legacy DTOs used by handlers) --------------------------------
protected fun mapUser(u: User): ScaleUser =
ScaleUser().apply {
runCatching { id = u.id }
runCatching { userName = u.name }
when (val b = runCatching { u.birthDate }.getOrNull()) {
is Long -> birthday = Date(b)
}
runCatching { bodyHeight = u.heightCm }
runCatching { gender = u.gender }
runCatching { activityLevel = u.activityLevel }
runCatching {
runBlocking(scope.coroutineContext) {
val userGoals = userFacade.getAllGoalsForUser(u.id).first()
val goalWeightGoal = userGoals.find { it.measurementTypeId == MeasurementTypeKey.WEIGHT.id }
if (goalWeightGoal != null) {
val goalType = measurementFacade.getAllMeasurementTypes().first()
.find { it.id == goalWeightGoal.measurementTypeId }
if (goalType != null) {
goalWeight = ConverterUtils.convertFloatValueUnit(
value = goalWeightGoal.goalValue,
fromUnit = goalType.unit,
toUnit = UnitType.KG
)
}
}
val allMeasurements = measurementFacade.getMeasurementsForUser(u.id).first()
val oldestWeightMeasurementValue = allMeasurements
.sortedBy { it.measurement.timestamp }
.firstNotNullOfOrNull { measurementWithValues ->
measurementWithValues.values.find { it.type.key == MeasurementTypeKey.WEIGHT }
}
if (oldestWeightMeasurementValue != null) {
initialWeight = ConverterUtils.convertFloatValueUnit(
value = oldestWeightMeasurementValue.value.floatValue ?: 0f,
fromUnit = oldestWeightMeasurementValue.type.unit,
toUnit = UnitType.KG
)
}
val allTypes = measurementFacade.getAllMeasurementTypes().first()
val weightType = allTypes.find { it.key == MeasurementTypeKey.WEIGHT }
if (weightType != null) {
scaleUnit = weightType.unit.toWeightUnit()
}
}
}
}
protected fun mapMeasurement(mwv: MeasurementWithValues?): ScaleMeasurement? {
if (mwv == null) return null
val m = ScaleMeasurement()
runCatching { m.userId = mwv.measurement.userId }
runCatching { m.dateTime = Date(mwv.measurement.timestamp) }
fun valueOf(key: MeasurementTypeKey): MeasurementValue? =
mwv.values.firstOrNull { it.type.key == key }?.value
valueOf(MeasurementTypeKey.WEIGHT)?.let { m.weight = it.floatValue ?: 0f }
valueOf(MeasurementTypeKey.BODY_FAT)?.let { m.fat = it.floatValue ?: 0f }
valueOf(MeasurementTypeKey.WATER)?.let { m.water = it.floatValue ?: 0f }
valueOf(MeasurementTypeKey.MUSCLE)?.let { m.muscle = it.floatValue ?: 0f }
valueOf(MeasurementTypeKey.VISCERAL_FAT)?.let { m.visceralFat = it.floatValue ?: 0f }
valueOf(MeasurementTypeKey.LBM)?.let { m.lbm = it.floatValue ?: 0f }
valueOf(MeasurementTypeKey.BONE)?.let { m.bone = it.floatValue ?: 0f }
return m
}
/** Pretty print a few leading bytes of a payload for logs. */
fun ByteArray.toHexPreview(limit: Int): String {
if (limit <= 0 || isEmpty()) return "(payload ${size}b)"
val show = min(size, limit)
val sb = StringBuilder("payload=[")
for (i in 0 until show) {
if (i > 0) sb.append(' ')
sb.append(String.format("%02X", this[i]))
}
if (size > limit) sb.append(" …(+").append(size - limit).append("b)")
sb.append(']')
return sb.toString()
}
}

410
app/src/main/java/com/health/openscale/core/bluetooth/scales/ScaleDeviceHandler.kt Normal file
View File

@@ -0,0 +1,410 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth.scales
import android.bluetooth.le.ScanResult
import androidx.annotation.StringRes
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.AutoGraph
import androidx.compose.material.icons.filled.FitnessCenter
import androidx.compose.material.icons.filled.Group
import androidx.compose.material.icons.filled.History
import androidx.compose.material.icons.filled.Schedule
import androidx.compose.material.icons.filled.Tune
import androidx.compose.material.icons.outlined.BatteryStd
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.res.stringResource
import eu.brassepc.fitnessdroid.R
import com.health.openscale.core.bluetooth.BluetoothEvent.UserInteractionType
import com.health.openscale.core.bluetooth.data.ScaleMeasurement
import com.health.openscale.core.bluetooth.data.ScaleUser
import com.health.openscale.core.service.ScannedDeviceInfo
import com.health.openscale.core.utils.LogManager
import com.welie.blessed.BluetoothPeripheral
import kotlinx.coroutines.CoroutineScope
import java.util.UUID
import kotlin.math.min
/**
* What a handler declares about a device it supports.
*
* @property displayName Human-friendly name shown in the UI (e.g., "Yunmai Mini").
* @property capabilities Features the device *can* support in theory.
* @property implemented Features this handler actually implements today (may be a subset).
* @property tuningProfile Optional link timing/retry preferences (see [TuningProfile]).
* @property linkMode Whether the device uses GATT or broadcast-only advertisements.
*/
data class DeviceSupport(
val displayName: String,
val capabilities: Set<DeviceCapability>,
val implemented: Set<DeviceCapability>,
val tuningProfile: TuningProfile = TuningProfile.Balanced,
val linkMode: LinkMode = LinkMode.CONNECT_GATT
)
/** High-level capabilities a scale might offer. */
enum class DeviceCapability(
@param:StringRes val labelRes: Int,
val icon: ImageVector
) {
BODY_COMPOSITION( R.string.cap_body_composition, Icons.Filled.FitnessCenter ),
TIME_SYNC( R.string.cap_time_sync, Icons.Filled.Schedule ),
USER_SYNC( R.string.cap_user_sync, Icons.Filled.Group ),
HISTORY_READ( R.string.cap_history_read, Icons.Filled.History ),
LIVE_WEIGHT_STREAM(R.string.cap_live_weight, Icons.Filled.AutoGraph ),
UNIT_CONFIG( R.string.cap_unit_config, Icons.Filled.Tune ),
BATTERY_LEVEL( R.string.cap_battery, Icons.Outlined.BatteryStd )
}
/**
* Defines whether a device communicates via a GATT connection
* or only via broadcast advertisements.
*/
enum class LinkMode { CONNECT_GATT, BROADCAST_ONLY, CLASSIC_SPP }
/**
* Signals how the handler consumed an advertisement.
* - IGNORED: payload not relevant; adapter keeps scanning silently.
* - CONSUMED_KEEP_SCANNING: payload processed, but we want to continue scanning (e.g., waiting for stability).
* - CONSUMED_STOP: final payload processed; adapter should stop scanning and finish the session.
*/
enum class BroadcastAction { IGNORED, CONSUMED_KEEP_SCANNING, CONSUMED_STOP }
/**
* # ScaleDeviceHandler
*
* Minimal base class for a **device-specific** BLE protocol handler.
*
* For GATT devices, the app (via `ModernScaleAdapter`) injects a BLE [Transport] and [Callbacks],
* then calls [onConnected] and forwards notifications to [onNotification].
*
* For broadcast-only devices, the adapter attaches a **no-op** transport and forwards
* advertisement frames to [onAdvertisement]. The handler can call [publish] to emit results.
*
* Threading: the adapter serializes and paces BLE I/O. Avoid sleeps or blocking work inside your
* handler; just call the helpers in the order your protocol requires.
*/
abstract class ScaleDeviceHandler {
val TAG = this::class.simpleName ?: "ScaleDeviceHandler"
companion object {
// Pseudo UUIDs for Classic/SPP
val CLASSIC_DATA_UUID: UUID =
UUID.fromString("00000000-0000-0000-0000-00000000C1A5")
}
/**
* Identify whether this handler supports the given scanned device.
* Return a [DeviceSupport] description if yes, or `null` if not.
*/
abstract fun supportFor(device: ScannedDeviceInfo): DeviceSupport?
/**
* Optional UI component for device-specific settings.
* Override this in concrete handlers to show custom input fields.
*/
@Composable
open fun DeviceConfigurationUi() {
// Default message when no specific configuration is required
Box(
modifier = Modifier.fillMaxWidth(),
contentAlignment = Alignment.Center
) {
Text(
text = stringResource(R.string.no_special_configuration_available),
style = MaterialTheme.typography.bodyMedium,
color = MaterialTheme.colorScheme.onSurfaceVariant
)
}
}
// --- Lifecycle entry points called by the adapter -------------------------
internal fun attachSettings(settings: DriverSettings) {
this.settings = settings
}
internal fun attach(transport: Transport, callbacks: Callbacks, settings: DriverSettings, data: DataProvider, scope: CoroutineScope) {
this.transport = transport
this.callbacks = callbacks
this.settings = settings
this.data = data
this._scope = scope
logD("attach()")
}
internal fun handleConnected(user: ScaleUser) {
logD("handleConnected(userId=${user.id}, height=${user.bodyHeight}, age=${user.age})")
try {
onConnected(user)
} catch (t: Throwable) {
logE("onConnected failed: ${t.message}", t)
callbacks?.onError(
R.string.bt_error_handler_connect_failed,
t,
t.message ?: "—"
)
}
}
internal fun handleNotification(characteristic: UUID, data: ByteArray) {
val u = currentAppUser()
try {
onNotification(characteristic, data, u)
} catch (t: Throwable) {
logE("onNotification failed for $characteristic: ${t.message}", t)
callbacks?.onError(
R.string.bt_error_handler_parse_error,
t,
characteristic.toString(),
t.message ?: "—"
)
}
}
internal fun handleDisconnected() {
logD("handleDisconnected()")
try {
onDisconnected()
} catch (t: Throwable) {
logW("onDisconnected threw: ${t.message}")
} finally {
}
}
internal fun detach() {
logD("detach()")
transport = null
callbacks = null
}
// --- To be implemented by concrete handlers --------------------------------
/** Called after services are discovered and the link is ready for I/O (GATT devices only). */
protected open fun onConnected(user: ScaleUser) = Unit
/** Called for each incoming notification (GATT devices only). */
protected open fun onNotification(characteristic: UUID, data: ByteArray, user: ScaleUser) = Unit
/** Optional cleanup hook. */
protected open fun onDisconnected() = Unit
/**
* Called for each advertisement seen for the target device (broadcast-only devices).
* Default implementation ignores the advertisement.
*/
open fun onAdvertisement(result: ScanResult, user: ScaleUser): BroadcastAction = BroadcastAction.IGNORED
// --- Protected helper methods (use these from your handler) ----------------
/** Enable notifications for a characteristic. */
protected fun setNotifyOn(service: UUID, characteristic: UUID) {
transport?.setNotifyOn(service, characteristic)
?: logW("setNotifyOn called without transport")
}
/**
* Write a command to a characteristic.
* @param withResponse true for `Write With Response` (default), false for `Write Without Response`.
*/
protected fun writeTo(
service: UUID,
characteristic: UUID,
payload: ByteArray,
withResponse: Boolean = true
) {
transport?.write(service, characteristic, payload, withResponse)
?: logW("writeTo called without transport")
}
/** Read a characteristic (rare for scales; most data comes via NOTIFY). */
protected fun readFrom(service: UUID, characteristic: UUID) {
transport?.read(service, characteristic)
?: logW("readFrom called without transport")
}
/** Publish a fully parsed measurement to the app. */
protected fun publish(measurement: ScaleMeasurement) {
logI("\u2190 publish measurement to app")
callbacks?.onPublish(measurement)
?: logW("publish called without callbacks")
}
/** Ask the adapter to terminate the link. */
protected fun requestDisconnect() {
logD("\u2192 request BLE disconnect")
transport?.disconnect()
}
fun hasCharacteristic(service: UUID, characteristic: UUID): Boolean {
val hasUUID = transport?.hasCharacteristic(service, characteristic) ?: false
if (!hasUUID)
logD("hasCharacteristic: $service/$characteristic → false")
return hasUUID
}
protected fun getPeripheral(): BluetoothPeripheral? {
return transport?.getPeripheral()
}
/** Helper to build a 16-bit Bluetooth Base UUID (e.g., `uuid16(0xFFE4)`). */
protected fun uuid16(short: Int): UUID =
UUID.fromString(String.format("0000%04x-0000-1000-8000-00805f9b34fb", short))
protected fun resolveString(@StringRes resId: Int, vararg args: Any): String =
callbacks?.resolveString(resId, *args) ?: "res:$resId"
protected fun settingsGetInt(key: String, default: Int = -1): Int = settings.getInt(key, default)
protected fun settingsPutInt(key: String, value: Int) { settings.putInt(key, value) }
protected fun settingsGetString(key: String, default: String? = null): String? = settings.getString(key, default)
protected fun settingsPutString(key: String, value: String) { settings.putString(key, value) }
protected fun currentAppUser(): ScaleUser = data.currentUser()
protected fun usersForDevice(): List<ScaleUser> = data.usersForDevice()
protected fun lastMeasurementFor(userId: Int): ScaleMeasurement? = data.lastMeasurementFor(userId)
// --- Logging shortcuts (route to LogManager under a single TAG) ------------
protected fun logD(msg: String) = LogManager.d(TAG, msg)
protected fun logI(msg: String) = LogManager.i(TAG, msg)
protected fun logW(msg: String) = LogManager.w(TAG, msg, null)
protected fun logE(msg: String, t: Throwable? = null) = LogManager.e(TAG, msg, t)
// Human-readable messages for users (e.g., snackbars/toasts)
protected fun userInfo(@StringRes resId: Int, vararg args: Any) {
callbacks?.onInfo(resId, *args) ?: logD("userInfo dropped: res=$resId")
}
protected fun userWarn(@StringRes resId: Int, vararg args: Any) {
callbacks?.onWarn(resId, *args) ?: logW("userWarn dropped: res=$resId")
}
protected fun userError(@StringRes resId: Int, vararg args: Any, t: Throwable? = null) {
callbacks?.onError(resId, t, *args) ?: logE("userError dropped: res=$resId", t)
}
protected fun requestUserInteraction(
interactionType: UserInteractionType,
data: Any?
) {
callbacks?.onUserInteractionRequired(interactionType, data)
?: logW("requestUserInteraction dropped: $interactionType")
}
open suspend fun onUserInteractionFeedback(
interactionType: UserInteractionType,
appUserId: Int,
feedbackData: Any) { /* no-op */ }
// --- Wiring provided by the adapter ---------------------------------------
private var transport: Transport? = null
private var callbacks: Callbacks? = null
private lateinit var settings: DriverSettings
private lateinit var data: DataProvider
private var _scope: CoroutineScope? = null
/**
* Lifecycle-bound coroutine scope provided by the adapter (cancelled when the communicator
* is closed). Handlers that need timeout/fallback coroutines should use this instead of
* creating their own scope. Valid after [attach] — i.e. inside onConnected/onNotification.
*/
protected val scope: CoroutineScope
get() = _scope ?: error("ScaleDeviceHandler.scope accessed before attach()")
/**
* BLE transport the adapter provides. No threading/queueing implied here—
* the adapter already serializes and paces I/O.
*/
interface Transport {
fun setNotifyOn(service: UUID, characteristic: UUID)
fun write(service: UUID, characteristic: UUID, payload: ByteArray, withResponse: Boolean = true)
fun read(service: UUID, characteristic: UUID)
fun disconnect()
fun getPeripheral(): BluetoothPeripheral? = null
fun hasCharacteristic(service: UUID, characteristic: UUID): Boolean
}
// ----- DataProvider: live app data the handler can query -----
interface DataProvider {
/** Currently selected app user (may be null if none). */
fun currentUser(): ScaleUser
/** Fresh snapshot of app users that are relevant for this device. */
fun usersForDevice(): List<ScaleUser>
/** Latest saved measurement for the given user (or null if none). */
fun lastMeasurementFor(userId: Int): ScaleMeasurement?
}
interface DriverSettings {
fun getInt(key: String, default: Int = -1): Int
fun putInt(key: String, value: Int)
fun getString(key: String, default: String? = null): String?
fun putString(key: String, value: String)
fun remove(key: String)
}
/** App callbacks to emit parsed results and user-visible messages. */
interface Callbacks {
fun onPublish(measurement: ScaleMeasurement)
fun onInfo(@StringRes resId: Int, vararg args: Any) { /* optional */ }
fun onWarn(@StringRes resId: Int, vararg args: Any) { /* optional */ }
fun onError(@StringRes resId: Int, t: Throwable? = null, vararg args: Any) { /* optional */ }
fun onUserInteractionRequired(interactionType: UserInteractionType, data: Any?) { /* optional */ }
fun resolveString(@StringRes resId: Int, vararg args: Any): String
}
// --- Small utils -----------------------------------------------------------
/** Pretty print a few leading bytes of a payload for logs. */
fun ByteArray.toHexPreview(limit: Int): String {
if (limit <= 0 || isEmpty()) return "(payload ${size}b)"
val show = min(size, limit)
val sb = StringBuilder("payload=[")
for (i in 0 until show) {
if (i > 0) sb.append(' ')
sb.append(String.format("%02X", this[i]))
}
if (size > limit) sb.append(" …(+").append(size - limit).append("b)")
sb.append(']')
return sb.toString()
}
/**
* ASCII preview of the first `max` bytes; non-printable bytes are rendered as '?'.
*/
fun ByteArray.toAsciiPreview(max: Int = 64): String {
if (isEmpty()) return ""
val n = min(size, max)
val sb = StringBuilder(n)
for (i in 0 until n) {
val ch = (this[i].toInt() and 0xFF).toChar()
sb.append(if (ch.isISOControl()) '?' else ch)
}
if (size > max) sb.append("…(+").append(size - max).append("b)")
return sb.toString()
}
}

324
app/src/main/java/com/health/openscale/core/bluetooth/scales/SppScaleAdapter.kt Normal file
View File

@@ -0,0 +1,324 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.bluetooth.scales
import android.annotation.SuppressLint
import android.bluetooth.BluetoothAdapter
import android.bluetooth.BluetoothDevice
import android.bluetooth.BluetoothManager
import android.bluetooth.BluetoothSocket
import android.content.Context
import android.os.SystemClock
import androidx.compose.runtime.Composable
import androidx.core.content.getSystemService
import eu.brassepc.fitnessdroid.R
import com.health.openscale.core.bluetooth.BluetoothEvent
import com.health.openscale.core.bluetooth.data.ScaleUser
import com.health.openscale.core.facade.MeasurementFacade
import com.health.openscale.core.facade.SettingsFacade
import com.health.openscale.core.facade.UserFacade
import com.health.openscale.core.utils.LogManager
import com.welie.blessed.BluetoothPeripheral
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.Job
import kotlinx.coroutines.delay
import kotlinx.coroutines.isActive
import kotlinx.coroutines.launch
import kotlinx.coroutines.sync.Mutex
import kotlinx.coroutines.sync.withLock
import kotlinx.coroutines.withContext
import java.io.InputStream
import java.io.OutputStream
import java.util.UUID
import kotlin.math.min
import kotlin.time.Duration.Companion.milliseconds
/**
* SPP (Bluetooth Classic / RFCOMM) adapter that plugs a [ScaleDeviceHandler] into a raw byte stream.
*
* Tuning usage:
* - Reconnect cooldown between attempts (common.reconnectCooldownMs)
* - Bounded retry on initial connect (common.maxRetries + common.retryBackoffMs)
* - Connect timeout (connectTimeoutMs)
* - Chunked writes (writeChunkBytes + interChunkDelayMs)
* - Small settle delay after connect (derived from interChunkDelayMs)
*/
class SppScaleAdapter(
context: Context,
settingsFacade: SettingsFacade,
measurementFacade: MeasurementFacade,
userFacade: UserFacade,
handler: ScaleDeviceHandler,
profile: TuningProfile = TuningProfile.Balanced
) : ModernScaleAdapter(context, settingsFacade, measurementFacade, userFacade, handler) {
private val tuning: BtSppTuning = profile.forSpp()
private var sppSocket: BluetoothSocket? = null
private var sppReaderJob: Job? = null
private var sppIn: InputStream? = null
private var sppOut: OutputStream? = null
private val writeMutex = Mutex()
@Composable
override fun DeviceConfigurationUi() {
// Delegate to the actual protocol handler
handler.DeviceConfigurationUi()
}
@SuppressLint("MissingPermission")
override fun doConnect(address: String, selectedUser: ScaleUser) {
val btManager: BluetoothManager? = context.getSystemService()
val adapter: BluetoothAdapter? = btManager?.adapter
if (adapter == null) {
_events.tryEmit(BluetoothEvent.ConnectionFailed(address, context.getString(R.string.bt_error_no_bluetooth_adapter)))
return
}
val device: BluetoothDevice = try {
adapter.getRemoteDevice(address)
} catch (_: Throwable) {
_events.tryEmit(BluetoothEvent.ConnectionFailed(address, context.getString(R.string.bt_error_no_device_found)))
return
}
_isConnecting.value = true
_isConnected.value = false
scope.launch(Dispatchers.IO) {
// Cooldown between attempts
val since = SystemClock.elapsedRealtime() - lastDisconnectAtMs
if (since in 1 until tuning.common.reconnectCooldownMs) {
delay((tuning.common.reconnectCooldownMs - since).milliseconds)
}
safeCancelDiscovery(adapter)
var attempt = 0
while (isActive) {
try {
LogManager.i(TAG, "Attempting SPP connection (attempt ${attempt + 1})")
val socket = device.createRfcommSocketToServiceRecord(ScaleDeviceHandler.CLASSIC_DATA_UUID)
sppSocket = socket
// --- Connect with manual timeout guard ---
var connected = false
// Start the blocking connect() in a child job
val connectJob = launch(Dispatchers.IO) {
socket.connect() // blocking call
connected = true
LogManager.i(TAG, "SPP connect() succeeded")
}
// Start a guard that closes the socket if connect takes too long
val guardJob = launch(Dispatchers.IO) {
val to = tuning.connectTimeoutMs
if (to > 0) {
delay(to.milliseconds)
if (!connected) {
LogManager.w(TAG, "Connect timeout reached ($to ms), closing socket")
// Force the connect() to abort by closing the socket
runCatching { socket.close() }
}
}
}
// Wait until either connect finishes or guard closes the socket
connectJob.join()
guardJob.cancel()
// If connect failed, connect() would have thrown and we’d be in catch{}
sppIn = socket.inputStream
sppOut = socket.outputStream
// Small settle delay before wiring the handler
val settleDelay = maxOf(50L, tuning.interChunkDelayMs * 3)
delay(settleDelay.milliseconds)
_isConnecting.value = false
_isConnected.value = true
val name = safeDeviceName(device)
val addr = safeDeviceAddress(device)
LogManager.i(TAG, "Connected to device $name [$addr]")
_events.tryEmit(BluetoothEvent.Connected(name, addr))
// Attach handler
val driverSettings = FacadeDriverSettings(
facade = settingsFacade,
scope = scope,
handlerNamespace = handler::class.simpleName ?: "Handler"
)
handler.attach(sppTransport, appCallbacks, driverSettings, dataProvider, scope)
handler.handleConnected(selectedUser)
// Reader loop (idle-timeout via available()+delay)
sppReaderJob = launch(Dispatchers.IO) {
val buf = ByteArray(1024)
var lastRx = SystemClock.elapsedRealtime()
try {
while (isActive) {
val ins = sppIn ?: break
val avail = runCatching { ins.available() }.getOrDefault(0)
if (avail > 0) {
val n = ins.read(buf, 0, min(buf.size, avail))
if (n <= 0) break
lastRx = SystemClock.elapsedRealtime()
val payload = buf.copyOf(n)
LogManager.d(TAG, "Received $n bytes from SPP ${payload.toHexPreview(24)}")
handler.handleNotification(ScaleDeviceHandler.CLASSIC_DATA_UUID, payload)
} else {
delay(50.milliseconds)
val idle = SystemClock.elapsedRealtime() - lastRx
if (tuning.readTimeoutMs > 0 && idle >= tuning.readTimeoutMs) {
LogManager.w(TAG, "Read idle timeout reached, disconnecting")
sppTransport.disconnect()
break
}
}
}
} catch (t: Throwable) {
LogManager.w(TAG, "SPP read error: ${t.message}", t)
} finally {
withContext(Dispatchers.Main) {
val da = safeDeviceAddress(device)
LogManager.i(TAG, "Reader loop finished, emitting disconnect")
_events.tryEmit(BluetoothEvent.Disconnected(da, "SPP stream closed"))
lastDisconnectAtMs = SystemClock.elapsedRealtime()
cleanup()
doDisconnect()
}
}
}
// success → exit retry loop
break
} catch (t: Throwable) {
attempt++
LogManager.e(TAG, "SPP connect failed (attempt $attempt/${tuning.common.maxRetries}): ${t.message}", t)
if (attempt <= tuning.common.maxRetries) {
_events.tryEmit(
BluetoothEvent.DeviceMessage(
context.getString(R.string.bt_info_reconnecting_try, attempt, tuning.common.maxRetries),
address
)
)
delay(tuning.common.retryBackoffMs.milliseconds)
safeCancelDiscovery(adapter)
continue
} else {
_events.tryEmit(BluetoothEvent.ConnectionFailed(address, t.message ?: "SPP connect failed"))
lastDisconnectAtMs = SystemClock.elapsedRealtime()
cleanup()
doDisconnect()
break
}
}
}
}
}
override fun doDisconnect() {
sppReaderJob?.cancel(); sppReaderJob = null
runCatching { sppIn?.close() }; sppIn = null
runCatching { sppOut?.close() }; sppOut = null
runCatching { sppSocket?.close() }; sppSocket = null
runCatching { handler.handleDisconnected() }
runCatching { handler.detach() }
_isConnected.value = false
_isConnecting.value = false
lastDisconnectAtMs = SystemClock.elapsedRealtime()
}
// --- Transport exposed to the handler --------------------------------------------------------
private val sppTransport = object : ScaleDeviceHandler.Transport {
override fun setNotifyOn(service: UUID, characteristic: UUID) {
// Not applicable for SPP: stream is always "notifying"
}
override fun write(service: UUID, characteristic: UUID, payload: ByteArray, withResponse: Boolean) {
// RFCOMM is a stream; we still pace writes and chunk large payloads
scope.launch(Dispatchers.IO) {
writeMutex.withLock {
try {
LogManager.d(TAG, "Starting write of ${payload.size} bytes to SPP: ${payload.toHexPreview(24)}")
val chunk = maxOf(1, tuning.writeChunkBytes)
var i = 0
while (i < payload.size) {
val end = min(i + chunk, payload.size)
sppOut?.write(payload, i, end - i)
sppOut?.flush()
val writtenChunk = payload.copyOfRange(i, end)
LogManager.d(TAG, "Wrote chunk ${i / chunk + 1}: ${writtenChunk.toHexPreview(16)}")
i = end
if (i < payload.size && tuning.interChunkDelayMs > 0) {
delay(tuning.interChunkDelayMs.milliseconds)
}
}
LogManager.i(TAG, "Finished writing ${payload.size} bytes to SPP")
} catch (t: Throwable) {
LogManager.e(TAG, "SPP write failed: ${t.message}", t)
appCallbacks.onWarn(R.string.bt_warn_write_failed_status,"SPP",t.message ?: "write failed")
}
}
}
}
override fun read(service: UUID, characteristic: UUID) {
// Not applicable for SPP; reads are handled by the continuous reader loop
}
override fun disconnect() {
doDisconnect()
}
override fun getPeripheral(): BluetoothPeripheral? = null
override fun hasCharacteristic(
service: UUID,
characteristic: UUID
): Boolean {
// Not applicable for SPP
return false
}
}
// --- Helpers with defensive permission handling ---------------------------------------------
@SuppressLint("MissingPermission")
private fun safeCancelDiscovery(adapter: BluetoothAdapter) {
try {
if (adapter.isDiscovering) adapter.cancelDiscovery()
} catch (se: SecurityException) {
LogManager.w(TAG, "cancelDiscovery blocked by missing permission", se)
}
}
@SuppressLint("MissingPermission")
private fun safeDeviceName(device: BluetoothDevice): String =
try { device.name } catch (_: SecurityException) { null } ?: "Unknown"
@SuppressLint("MissingPermission")
private fun safeDeviceAddress(device: BluetoothDevice): String =
try { device.address } catch (_: SecurityException) { "unknown" }
}

180
app/src/main/java/com/health/openscale/core/data/Enums.kt Normal file
View File

@@ -0,0 +1,180 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* FitnessDroid: nedbantad kopia av openScales Enums.kt — bara det som
* bluetooth-drivrutinerna behöver (strängresurser/ikoner urplockade).
*/
package com.health.openscale.core.data
enum class GenderType {
MALE,
FEMALE;
fun isMale(): Boolean {
return this == MALE
}
}
enum class ActivityLevel {
SEDENTARY, MILD, MODERATE, HEAVY, EXTREME;
fun toInt(): Int {
when (this) {
SEDENTARY -> return 0
MILD -> return 1
MODERATE -> return 2
HEAVY -> return 3
EXTREME -> return 4
}
}
companion object {
@JvmStatic
fun fromInt(unit: Int): ActivityLevel {
when (unit) {
0 -> return SEDENTARY
1 -> return MILD
2 -> return MODERATE
3 -> return HEAVY
4 -> return EXTREME
}
return SEDENTARY
}
}
}
enum class WeightUnit {
KG, LB, ST;
override fun toString(): String {
when (this) {
LB -> return "lb"
ST -> return "st"
KG -> return "kg"
}
}
fun toInt(): Int {
when (this) {
LB -> return 1
ST -> return 2
KG -> return 0
}
}
companion object {
@JvmStatic
fun fromInt(unit: Int): WeightUnit {
when (unit) {
1 -> return LB
2 -> return ST
else -> return KG
}
}
}
}
enum class MeasurementTypeKey(val id: Int) {
WEIGHT(1),
BMI(2),
BODY_FAT(3),
WATER(4),
MUSCLE(5),
LBM(6),
BONE(7),
WAIST(8),
WHR(9),
WHTR(10),
HIPS(11),
VISCERAL_FAT(12),
CHEST(13),
THIGH(14),
BICEPS(15),
NECK(16),
CALIPER_1(17),
CALIPER_2(18),
CALIPER_3(19),
CALIPER(20),
BMR(21),
TDEE(22),
HEART_RATE(23),
CALORIES(24),
DATE(25),
TIME(26),
COMMENT(27),
USER(28),
IMPEDANCE(29),
IMPEDANCE_LOW(30),
ECW(31),
ICW(32),
PROTEIN(33),
BCM(34),
CUSTOM(99);
}
enum class MeasureUnit {
CM, INCH;
override fun toString(): String {
when (this) {
CM -> return "cm"
INCH -> return "in"
}
}
fun toInt(): Int {
when (this) {
CM -> return 0
INCH -> return 1
}
}
companion object {
@JvmStatic
fun fromInt(unit: Int): MeasureUnit {
when (unit) {
1 -> return INCH
else -> return CM
}
}
}
}
enum class UnitType(val displayName: String) {
KG("kg"),
LB("lb"),
ST("st"),
PERCENT("%"),
CM("cm"),
INCH("in"),
KCAL("kcal"),
BPM("bpm"),
OHM("Ω"),
NONE("");
fun isWeightUnit(): Boolean {
return this == KG || this == LB || this == ST
}
fun toWeightUnit(): WeightUnit {
return when (this) {
LB -> WeightUnit.LB
ST -> WeightUnit.ST
else -> WeightUnit.KG
}
}
}

39
app/src/main/java/com/health/openscale/core/data/User.kt Normal file
View File

@@ -0,0 +1,39 @@
/*
* FitnessDroid-shim för openScales User-entitet (upstream är en Room-entitet).
* Bara fälten som bluetooth-adaptrarnas mapUser() läser.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*/
package com.health.openscale.core.data
data class User(
val id: Int = 1,
val name: String = "",
/** Födelsedag i epoch-millis (null = okänd) */
val birthDate: Long? = null,
/** Längd i cm */
val heightCm: Float = -1f,
val gender: GenderType = GenderType.MALE,
val activityLevel: ActivityLevel = ActivityLevel.SEDENTARY,
)
/** Målvikt m.m. — används av mapUser(); FitnessDroid har inga mål ännu. */
data class Goal(
val measurementTypeId: Int,
val goalValue: Float,
)
/** Mättyp med enhet — används för att avgöra vågens viktenhet. */
data class MeasurementType(
val id: Int,
val key: MeasurementTypeKey,
val unit: UnitType,
)
/** Ett enskilt mätvärde. */
data class MeasurementValue(
val floatValue: Float?,
)

86
app/src/main/java/com/health/openscale/core/facade/Facades.kt Normal file
View File

@@ -0,0 +1,86 @@
/*
* FitnessDroid-shims för openScales facades (upstream pratar med Room +
* inställningssystem). Här backas de av DataStore respektive appens profil,
* med exakt den yta som bluetooth-paketet använder:
*
* - SettingsFacade: drivrutinernas key/value-inställningar + tuning-profil
* - UserFacade: aktuell användare (längd/ålder/kön) som drivrutinerna behöver
* - MeasurementFacade: senaste mätningar (används av vissa drivrutiner för
* igenkänning av användare) — tom tills vidare
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*/
package com.health.openscale.core.facade
import android.content.Context
import androidx.datastore.preferences.core.edit
import androidx.datastore.preferences.core.intPreferencesKey
import androidx.datastore.preferences.core.stringPreferencesKey
import androidx.datastore.preferences.preferencesDataStore
import com.health.openscale.core.data.Goal
import com.health.openscale.core.data.MeasurementType
import com.health.openscale.core.data.MeasurementTypeKey
import com.health.openscale.core.data.UnitType
import com.health.openscale.core.data.User
import com.health.openscale.core.model.MeasurementWithValues
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.flowOf
import kotlinx.coroutines.flow.map
private val Context.driverDataStore by preferencesDataStore(name = "openscale_driver")
class SettingsFacade(private val context: Context) {
/** Sparad BLE-tuning-profil ("Conservative"/"Balanced"/"Aggressive"), null = handlerns default. */
val savedBluetoothTuneProfile: Flow<String?> =
context.driverDataStore.data.map { it[stringPreferencesKey("tuning_profile")] }
/** openScales utvecklarläge (dumpar GATT-trädet i loggen istället för att mäta). */
val developerModeEnabled: Flow<Boolean> =
context.driverDataStore.data.map { it[stringPreferencesKey("developer_mode")] == "true" }
fun observeSetting(key: String, default: Int): Flow<Int> =
context.driverDataStore.data.map { it[intPreferencesKey(key)] ?: default }
fun observeSetting(key: String, default: String): Flow<String> =
context.driverDataStore.data.map { it[stringPreferencesKey(key)] ?: default }
suspend fun saveSetting(key: String, value: Int) {
context.driverDataStore.edit { it[intPreferencesKey(key)] = value }
}
suspend fun saveSetting(key: String, value: String) {
context.driverDataStore.edit { it[stringPreferencesKey(key)] = value }
}
}
class UserFacade {
private val selectedUser = MutableStateFlow<User?>(null)
/** Appen uppdaterar den aktuella användaren (längd/ålder/kön) härifrån. */
fun setSelectedUser(user: User?) {
selectedUser.value = user
}
fun observeSelectedUser(): StateFlow<User?> = selectedUser
fun observeAllUsers(): Flow<List<User>> = selectedUser.map { listOfNotNull(it) }
fun getAllGoalsForUser(userId: Int): Flow<List<Goal>> = flowOf(emptyList())
}
class MeasurementFacade {
/** Senaste mätningar per användare — används av vissa drivrutiner för användar-igenkänning. */
fun getMeasurementsForUser(userId: Int): Flow<List<MeasurementWithValues>> = flowOf(emptyList())
fun getAllMeasurementTypes(): Flow<List<MeasurementType>> = flowOf(
listOf(MeasurementType(MeasurementTypeKey.WEIGHT.id, MeasurementTypeKey.WEIGHT, UnitType.KG))
)
}

28
app/src/main/java/com/health/openscale/core/model/MeasurementWithValues.kt Normal file
View File

@@ -0,0 +1,28 @@
/*
* FitnessDroid-shim för openScales MeasurementWithValues (upstream är en
* Room-relation). Bara det som bluetooth-adaptrarnas mapMeasurement() läser.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*/
package com.health.openscale.core.model
import com.health.openscale.core.data.MeasurementType
import com.health.openscale.core.data.MeasurementValue
data class Measurement(
val userId: Int,
val timestamp: Long,
)
data class ValueWithType(
val type: MeasurementType,
val value: MeasurementValue,
)
data class MeasurementWithValues(
val measurement: Measurement,
val values: List<ValueWithType>,
)

357
app/src/main/java/com/health/openscale/core/service/BleScanner.kt Normal file
View File

@@ -0,0 +1,357 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.service
import android.annotation.SuppressLint
import android.bluetooth.BluetoothManager
import android.bluetooth.le.ScanResult
import android.content.Context
import android.os.Handler
import android.os.Looper
import android.util.SparseArray
import com.health.openscale.core.bluetooth.ScaleFactory
import com.health.openscale.core.utils.LogManager
import com.welie.blessed.BluetoothCentralManager
import com.welie.blessed.BluetoothCentralManagerCallback
import com.welie.blessed.BluetoothPeripheral
import com.welie.blessed.ScanFailure
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Job
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.launch
import java.util.UUID
import androidx.core.util.isNotEmpty
import kotlin.time.Duration.Companion.milliseconds
/**
* Data class to hold information about a scanned Bluetooth LE device.
*
* @property name The advertised name of the device. Can be null.
* @property address The MAC address of the device.
* @property rssi The received signal strength indicator (RSSI) in dBm.
* @property serviceUuids A list of service UUIDs advertised by the device.
* @property manufacturerData Manufacturer-specific data advertised by the device.
* @property serviceData Service-data payloads advertised by the device.
* @property isSupported Flag indicating whether openScale has a handler for this device.
* @property determinedHandlerDisplayName The display name of the handler determined for this device, if any.
*/
data class ScannedDeviceInfo(
var name: String,
val address: String,
val rssi: Int,
val serviceUuids: List<UUID>,
val manufacturerData: SparseArray<ByteArray>?,
val serviceData: Map<UUID, ByteArray> = emptyMap(),
var isSupported: Boolean = false,
var determinedHandlerDisplayName: String? = null
)
/**
* Manages Bluetooth LE device scanning operations using the Blessed library.
*
* This class handles starting, stopping, and processing scan results. It exposes
* [StateFlow]s for discovered devices, scanning status, and scan errors, allowing
* UI components or ViewModels to observe scanning activity.
*
* @param context The application context.
* @param externalScope A [CoroutineScope] (typically from a ViewModel) for launching tasks like scan timeouts.
* @param scaleFactory An instance of [ScaleFactory] used to determine device support and handler information.
*/
class BluetoothScannerManager(
private val context: Context,
private val externalScope: CoroutineScope,
private val scaleFactory: ScaleFactory
) {
private companion object {
const val TAG = "BluetoothScannerMgr"
}
// Ensures Blessed library callbacks are executed on the main thread.
private val blessedBluetoothHandler = Handler(Looper.getMainLooper())
private val centralManager: BluetoothCentralManager by lazy {
BluetoothCentralManager(context, centralManagerCallback, blessedBluetoothHandler)
}
private val _scannedDevices = MutableStateFlow<List<ScannedDeviceInfo>>(emptyList())
/**
* Emits the current list of discovered and processed [ScannedDeviceInfo] objects.
* The list is sorted by support status (supported first), then by RSSI (strongest signal first),
* and finally by device name.
*/
val scannedDevices: StateFlow<List<ScannedDeviceInfo>> = _scannedDevices.asStateFlow()
private val _isScanning = MutableStateFlow(false)
/**
* Emits `true` if a Bluetooth LE scan is currently active, `false` otherwise.
*/
val isScanning: StateFlow<Boolean> = _isScanning.asStateFlow()
private val _scanError = MutableStateFlow<String?>(null)
/**
* Emits error messages related to the scanning process.
* Emits `null` if there is no current error or an error has been cleared.
*/
val scanError: StateFlow<String?> = _scanError.asStateFlow()
private var scanTimeoutJob: Job? = null
// Stores unique devices found during a scan, keyed by MAC address, for efficient updates.
private val deviceMap = mutableMapOf<String, ScannedDeviceInfo>()
/**
* Starts a Bluetooth LE scan for a specified duration.
*
* Prerequisites (e.g., Bluetooth enabled, permissions granted) are checked.
* If a scan is already in progress, this method returns without action.
*
* @param scanDurationMs The duration in milliseconds for the scan.
* The scan automatically stops after this period if not manually stopped earlier.
*/
@SuppressLint("MissingPermission") // Permissions are expected to be checked by the calling ViewModel.
fun startScan(scanDurationMs: Long) {
if (!validateScanPrerequisites()) {
return
}
if (_isScanning.value || centralManager.isScanning) {
LogManager.d(TAG, "Scan is already in progress.")
return
}
LogManager.i(TAG, "Starting device scan for $scanDurationMs ms.")
deviceMap.clear()
_scannedDevices.value = emptyList()
_scanError.value = null // Clear previous errors.
_isScanning.value = true
try {
centralManager.scanForPeripherals()
} catch (e: Exception) {
LogManager.e(TAG, "Exception while starting scan: ${e.message}", e)
_scanError.value = "Error starting scan: ${e.localizedMessage ?: "Unknown error"}"
_isScanning.value = false
return
}
scanTimeoutJob?.cancel()
scanTimeoutJob = externalScope.launch {
delay(scanDurationMs.milliseconds)
if (_isScanning.value) {
LogManager.i(TAG, "Scan timeout reached after $scanDurationMs ms.")
stopScanInternal(isTimeout = true)
}
}
}
/**
* Stops the currently active Bluetooth LE scan.
*/
fun stopScan() {
stopScanInternal(isTimeout = false)
}
/**
* Internal implementation for stopping the scan.
* @param isTimeout Indicates if the stop was triggered by a timeout.
*/
private fun stopScanInternal(isTimeout: Boolean) {
if (!_isScanning.value && !centralManager.isScanning) {
return // Scan not active.
}
LogManager.i(TAG, "Stopping device scan. Triggered by timeout: $isTimeout")
scanTimeoutJob?.cancel()
scanTimeoutJob = null
try {
if (centralManager.isScanning) {
centralManager.stopScan()
}
} catch (e: Exception) {
LogManager.e(TAG, "Exception while stopping scan: ${e.message}", e)
// Optionally, an error could be set here, but it's often not critical for a stop action.
}
_isScanning.value = false
if (isTimeout && deviceMap.isEmpty()) {
_scanError.value = "No devices found."
}
LogManager.d(TAG, "Scan stopped. Found devices: ${deviceMap.size}")
}
/**
* Validates if conditions are met to start a scan (e.g., Bluetooth enabled).
* Note: Permission checks are the responsibility of the calling ViewModel.
*
* @return `true` if prerequisites are met, `false` otherwise.
* If `false`, `_scanError` is updated with the reason.
*/
private fun validateScanPrerequisites(): Boolean {
val bluetoothManager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager?
if (bluetoothManager?.adapter?.isEnabled != true) {
LogManager.w(TAG, "Scan prerequisites not met: Bluetooth is disabled.")
_scanError.value = "Bluetooth is disabled. Please enable it to scan."
return false
}
if (_isScanning.value) {
LogManager.d(TAG, "Scan is already in progress (checked in validate).")
return false
}
_scanError.value = null // Clear errors if prerequisites are met.
return true
}
/**
* Clears any active scan error message from `scanError` StateFlow.
*/
fun clearScanError() {
if (_scanError.value != null) {
_scanError.value = null
}
}
/**
* Releases resources used by the scanner, including the Blessed [BluetoothCentralManager].
* Call this when the scanner is no longer needed (e.g., in ViewModel's `onCleared`).
*/
fun close() {
LogManager.i(TAG, "Closing BluetoothScannerManager.")
stopScanInternal(isTimeout = false) // Ensure scan is stopped.
try {
// Crucial to close BluetoothCentralManager to release system resources
// and unregister internal broadcast receivers used by the Blessed library.
centralManager.close()
LogManager.d(TAG, "Blessed BluetoothCentralManager closed successfully.")
} catch (e: Exception) {
LogManager.e(TAG, "Error closing Blessed BluetoothCentralManager: ${e.message}", e)
}
}
private val centralManagerCallback = object : BluetoothCentralManagerCallback() {
@SuppressLint("MissingPermission") // Permissions are handled before scan initiation.
override fun onDiscovered(peripheral: BluetoothPeripheral, scanResult: ScanResult) {
val deviceName = peripheral.name
val deviceAddress = peripheral.address
val rssi = scanResult.rssi
val serviceUuids: List<UUID> = scanResult.scanRecord?.serviceUuids?.mapNotNull { it?.uuid } ?: emptyList()
val manufacturerData: SparseArray<ByteArray>? = scanResult.scanRecord?.manufacturerSpecificData
val serviceData: Map<UUID, ByteArray> = scanResult.scanRecord?.serviceData
?.mapKeys { it.key.uuid }
?.mapValues { it.value.copyOf() }
?: emptyMap()
val newDevice = ScannedDeviceInfo(
name = deviceName,
address = deviceAddress,
rssi = rssi,
serviceUuids = serviceUuids,
manufacturerData = manufacturerData,
serviceData = serviceData,
isSupported = false, // will be determined in the next getSupportingHandlerInfo
determinedHandlerDisplayName = null // // will be determined in the next getSupportingHandlerInfo
)
val (isSupported, handlerName) = scaleFactory.getSupportingHandlerInfo(newDevice)
newDevice.isSupported = isSupported
newDevice.determinedHandlerDisplayName = handlerName
val existingDevice = deviceMap[newDevice.address]
var listShouldBeUpdated = false
if (existingDevice != null) {
// Update criteria: if RSSI changed, or if key device info (name, support, handler, services, manufacturer data) has improved or changed.
val nameChangedToKnown = newDevice.name.isNotEmpty() && existingDevice.name.isEmpty()
val supportStatusImproved = !existingDevice.isSupported && newDevice.isSupported
val handlerChanged = newDevice.determinedHandlerDisplayName != existingDevice.determinedHandlerDisplayName
val serviceUuidsUpdated = newDevice.serviceUuids.isNotEmpty() && newDevice.serviceUuids != existingDevice.serviceUuids
val manuDataUpdated = newDevice.manufacturerData != null && !newDevice.manufacturerData.contentEquals(existingDevice.manufacturerData)
val serviceDataUpdated = newDevice.serviceData.isNotEmpty() && !newDevice.serviceData.contentEquals(existingDevice.serviceData)
if (newDevice.rssi != existingDevice.rssi || nameChangedToKnown || supportStatusImproved || handlerChanged || serviceUuidsUpdated || manuDataUpdated || serviceDataUpdated) {
deviceMap[newDevice.address] = existingDevice.copy(
name = newDevice.name.ifEmpty { existingDevice.name }, // Prefer new name if available.
rssi = newDevice.rssi,
isSupported = existingDevice.isSupported || newDevice.isSupported, // Retain 'supported' status if ever true.
determinedHandlerDisplayName = newDevice.determinedHandlerDisplayName ?: existingDevice.determinedHandlerDisplayName,
serviceUuids = if (newDevice.serviceUuids.isNotEmpty()) newDevice.serviceUuids else existingDevice.serviceUuids,
manufacturerData = newDevice.manufacturerData ?: existingDevice.manufacturerData,
serviceData = newDevice.serviceData.ifEmpty { existingDevice.serviceData }
)
listShouldBeUpdated = true
}
} else {
// Add new device if it's supported, or has a meaningful name, or provides service/manufacturer data.
// This avoids populating the list with devices that have no identifying information and are not supported.
if (newDevice.isSupported ||
newDevice.name.isNotEmpty() ||
newDevice.serviceUuids.isNotEmpty() ||
(newDevice.manufacturerData != null && newDevice.manufacturerData.isNotEmpty()) ||
newDevice.serviceData.isNotEmpty()
) {
deviceMap[newDevice.address] = newDevice
listShouldBeUpdated = true
}
}
if (listShouldBeUpdated) {
// Filter ensures only devices that are supported or have a meaningful name (not generic "Unknown Device") are emitted.
// Sorting provides a consistent and user-friendly order.
_scannedDevices.value = deviceMap.values
.filter { it.isSupported || (it.name.isNotEmpty() && it.name != "Unbekanntes Gerät" && it.name != "Unknown Device") }
.sortedWith(compareByDescending<ScannedDeviceInfo> { it.isSupported }
.thenByDescending { it.rssi }
.thenBy { it.name.ifEmpty { "zzzz" }.lowercase() }) // "zzzz" ensures unnamed devices sort last.
.toList()
}
}
override fun onScanFailed(scanFailure: ScanFailure) {
LogManager.e(TAG, "Bluetooth scan failed: $scanFailure")
externalScope.launch {
_scanError.value = "Bluetooth Scan Failed: $scanFailure"
_isScanning.value = false
scanTimeoutJob?.cancel() // Stop scan timeout if scan fails.
}
}
}
}
private fun SparseArray<ByteArray>?.contentEquals(other: SparseArray<ByteArray>?): Boolean {
if (this == null || other == null) return this == other
if (size() != other.size()) return false
for (i in 0 until size()) {
val key = keyAt(i)
val otherIndex = other.indexOfKey(key)
if (otherIndex < 0) return false
if (!valueAt(i).contentEquals(other.valueAt(otherIndex))) return false
}
return true
}
private fun Map<UUID, ByteArray>.contentEquals(other: Map<UUID, ByteArray>): Boolean {
if (size != other.size) return false
for ((key, value) in this) {
val otherValue = other[key] ?: return false
if (!value.contentEquals(otherValue)) return false
}
return true
}

266
app/src/main/java/com/health/openscale/core/utils/ConverterUtils.kt Normal file
View File

@@ -0,0 +1,266 @@
/*
* openScale
* Copyright (C) 2025 olie.xdev <olie.xdeveloper@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package com.health.openscale.core.utils
import com.health.openscale.core.data.MeasureUnit
import com.health.openscale.core.data.UnitType
import com.health.openscale.core.data.WeightUnit
import kotlin.math.floor
import kotlin.math.roundToInt
object ConverterUtils {
private const val KG_LB: Float = 2.20462f
private const val KG_ST: Float = 0.157473f
private const val CM_IN: Float = 0.393701f
private const val LB_PER_ST_DOUBLE: Double = 14.0
@JvmStatic
fun toKilogram(value: Float, unit: WeightUnit): Float {
when (unit) {
WeightUnit.LB -> return value / KG_LB
WeightUnit.ST -> return value / KG_ST
WeightUnit.KG -> return value
}
}
@JvmStatic
fun fromKilogram(kg: Float, unit: WeightUnit): Float {
when (unit) {
WeightUnit.LB -> return kg * KG_LB
WeightUnit.ST -> return kg * KG_ST
WeightUnit.KG -> return kg
}
}
@JvmStatic
fun toCentimeter(value: Float, unit: MeasureUnit): Float {
when (unit) {
MeasureUnit.INCH -> return value / CM_IN
MeasureUnit.CM -> return value
}
}
@JvmStatic
fun fromCentimeter(cm: Float, unit: MeasureUnit): Float {
when (unit) {
MeasureUnit.INCH -> return cm * CM_IN
MeasureUnit.CM -> return cm
}
}
@JvmStatic
fun decimalStToStLb(stDec: Double): Pair<Int, Int> {
val totalLb = stDec * LB_PER_ST_DOUBLE
var st = floor(totalLb / LB_PER_ST_DOUBLE).toInt()
var lb = (totalLb - st * LB_PER_ST_DOUBLE).roundToInt()
if (lb == 14) { st += 1; lb = 0 } // normalize carry
return st to lb
}
@JvmStatic
fun stLbToStDecimal(st: Int, lb: Int): Double =
st + (lb / LB_PER_ST_DOUBLE)
@JvmStatic
fun fromSignedInt16Le(data: ByteArray, offset: Int): Int {
var value = data[offset + 1].toInt() shl 8
value += data[offset].toInt() and 0xFF
return value
}
@JvmStatic
fun fromSignedInt16Be(data: ByteArray, offset: Int): Int {
var value = data[offset].toInt() shl 8
value += data[offset + 1].toInt() and 0xFF
return value
}
@JvmStatic
fun fromUnsignedInt16Le(data: ByteArray, offset: Int): Int {
return fromSignedInt16Le(data, offset) and 0xFFFF
}
@JvmStatic
fun fromUnsignedInt16Be(data: ByteArray, offset: Int): Int {
return fromSignedInt16Be(data, offset) and 0xFFFF
}
@JvmStatic
fun toInt16Le(data: ByteArray, offset: Int, value: Int) {
data[offset + 0] = (value and 0xFF).toByte()
data[offset + 1] = ((value shr 8) and 0xFF).toByte()
}
@JvmStatic
fun toInt16Be(data: ByteArray, offset: Int, value: Int) {
data[offset + 0] = ((value shr 8) and 0xFF).toByte()
data[offset + 1] = (value and 0xFF).toByte()
}
@JvmStatic
fun toInt16Le(value: Int): ByteArray {
val data = ByteArray(2)
toInt16Le(data, 0, value)
return data
}
@JvmStatic
fun toInt16Be(value: Int): ByteArray {
val data = ByteArray(2)
toInt16Be(data, 0, value)
return data
}
@JvmStatic
fun fromSignedInt24Le(data: ByteArray, offset: Int): Int {
var value = data[offset + 2].toInt() shl 16
value += (data[offset + 1].toInt() and 0xFF) shl 8
value += data[offset].toInt() and 0xFF
return value
}
@JvmStatic
fun fromSignedInt24Be(data: ByteArray, offset: Int): Int {
var value = data[offset].toInt() shl 16
value += (data[offset + 1].toInt() and 0xFF) shl 8
value += data[offset + 2].toInt() and 0xFF
return value
}
@JvmStatic
fun fromUnsignedInt24Le(data: ByteArray, offset: Int): Int {
return fromSignedInt24Le(data, offset) and 0xFFFFFF
}
@JvmStatic
fun fromUnsignedInt24Be(data: ByteArray, offset: Int): Int {
return fromSignedInt24Be(data, offset) and 0xFFFFFF
}
@JvmStatic
fun fromSignedInt32Le(data: ByteArray, offset: Int): Int {
var value = data[offset + 3].toInt() shl 24
value += (data[offset + 2].toInt() and 0xFF) shl 16
value += (data[offset + 1].toInt() and 0xFF) shl 8
value += data[offset].toInt() and 0xFF
return value
}
@JvmStatic
fun fromSignedInt32Be(data: ByteArray, offset: Int): Int {
var value = data[offset].toInt() shl 24
value += (data[offset + 1].toInt() and 0xFF) shl 16
value += (data[offset + 2].toInt() and 0xFF) shl 8
value += data[offset + 3].toInt() and 0xFF
return value
}
@JvmStatic
fun fromUnsignedInt32Le(data: ByteArray, offset: Int): Long {
return fromSignedInt32Le(data, offset).toLong() and 0xFFFFFFFFL
}
@JvmStatic
fun fromUnsignedInt32Be(data: ByteArray, offset: Int): Long {
return fromSignedInt32Be(data, offset).toLong() and 0xFFFFFFFFL
}
@JvmStatic
fun toInt32Le(data: ByteArray, offset: Int, value: Long) {
data[offset + 3] = ((value shr 24) and 0xFFL).toByte()
data[offset + 2] = ((value shr 16) and 0xFFL).toByte()
data[offset + 1] = ((value shr 8) and 0xFFL).toByte()
data[offset + 0] = (value and 0xFFL).toByte()
}
@JvmStatic
fun toInt32Be(data: ByteArray, offset: Int, value: Long) {
data[offset + 0] = ((value shr 24) and 0xFFL).toByte()
data[offset + 1] = ((value shr 16) and 0xFFL).toByte()
data[offset + 2] = ((value shr 8) and 0xFFL).toByte()
data[offset + 3] = (value and 0xFFL).toByte()
}
@JvmStatic
fun toInt32Le(value: Long): ByteArray {
val data = ByteArray(4)
toInt32Le(data, 0, value)
return data
}
@JvmStatic
fun toInt32Be(value: Long): ByteArray {
val data = ByteArray(4)
toInt32Be(data, 0, value)
return data
}
/**
* Converts a Float value from one UnitType to another, if a conversion is defined.
* Returns the original value if no conversion is applicable or units are the same.
*
* @param value The float value to convert.
* @param fromUnit The original UnitType of the value.
* @param toUnit The target UnitType for the value.
* @return The converted float value, or the original value if no conversion is done.
*/
@JvmStatic
fun convertFloatValueUnit(value: Float, fromUnit: UnitType, toUnit: UnitType): Float {
if (fromUnit == toUnit) return value
// KG -> Andere Gewichtseinheiten
if (fromUnit == UnitType.KG) {
return when (toUnit) {
UnitType.LB -> fromKilogram(value, WeightUnit.LB)
UnitType.ST -> fromKilogram(value, WeightUnit.ST)
else -> value // Keine Umrechnung zu anderen Typen von KG aus
}
}
// LB -> Andere Gewichtseinheiten (erst zu KG, dann zum Ziel)
if (fromUnit == UnitType.LB) {
val kgValue = toKilogram(value, WeightUnit.LB)
return when (toUnit) {
UnitType.KG -> kgValue
UnitType.ST -> fromKilogram(kgValue, WeightUnit.ST)
else -> value
}
}
// ST -> Andere Gewichtseinheiten (erst zu KG, dann zum Ziel)
if (fromUnit == UnitType.ST) {
val kgValue = toKilogram(value, WeightUnit.ST)
return when (toUnit) {
UnitType.KG -> kgValue
UnitType.LB -> fromKilogram(kgValue, WeightUnit.LB)
else -> value
}
}
// CM -> Andere Längeneinheiten
if (fromUnit == UnitType.CM) {
return when (toUnit) {
UnitType.INCH -> fromCentimeter(value, MeasureUnit.INCH)
else -> value
}
}
if (fromUnit == UnitType.INCH) {
val cmValue = toCentimeter(value, MeasureUnit.INCH)
return when (toUnit) {
UnitType.CM -> cmValue
else -> value
}
}
return value
}
/**
* Removes all non-digit characters from [input] and truncates the result to [maxLen] characters.
*
* @param input The raw string to sanitize.
* @param maxLen The maximum number of digit characters to retain.
* @return A string containing only digit characters, at most [maxLen] characters long.
*/
@JvmStatic
fun sanitizeDigits(input: String, maxLen: Int): String =
input.filter { it.isDigit() }.take(maxLen)
}

19
app/src/main/java/com/health/openscale/core/utils/LogManager.kt Normal file
View File

@@ -0,0 +1,19 @@
/*
* FitnessDroid-shim för openScales LogManager.
* Upstream har filloggning m.m. — här räcker Androids vanliga logcat.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*/
package com.health.openscale.core.utils
import android.util.Log
object LogManager {
fun d(tag: String, msg: String) { Log.d(tag, msg) }
fun i(tag: String, msg: String) { Log.i(tag, msg) }
fun w(tag: String, msg: String, t: Throwable? = null) { Log.w(tag, msg, t) }
fun e(tag: String, msg: String, t: Throwable? = null) { Log.e(tag, msg, t) }
}

26
app/src/main/res/values/strings.xml
View File

@@ -1,4 +1,30 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">FitnessDroid</string>
<!-- Strängar som de vendrade openScale-drivrutinerna refererar (svenska motsvarigheter
till upstreams engelska; formatargumenten måste matcha upstream). -->
<string name="bt_error_delivery_user_feedback">Kunde inte leverera användarsvar: %1$s</string>
<string name="bt_error_generic">Fel</string>
<string name="bt_error_handler_connect_failed">Drivrutinen misslyckades vid anslutning: %1$s</string>
<string name="bt_error_handler_parse_error">Drivrutinen kunde inte tolka %1$s: %2$s</string>
<string name="bt_error_no_bluetooth_adapter">Ingen Bluetooth-adapter hittades på enheten.</string>
<string name="bt_error_no_device_found">Vågen hittades inte. Kontrollera att den är på och inom räckhåll.</string>
<string name="bt_error_no_user_selected">Ingen användare vald</string>
<string name="bt_info_reconnecting_try">Återansluter… (försök %1$d/%2$d)</string>
<string name="bt_info_step_on_scale">Ställ dig barfota på vågen</string>
<string name="bt_info_waiting_for_measurement">Väntar på mätning…</string>
<string name="bt_warn_notify_failed">Kunde inte aktivera notifieringar för %1$s.</string>
<string name="bt_warn_write_failed_status">Skrivning till %1$s misslyckades: %2$s</string>
<string name="cap_battery">Batteri</string>
<string name="cap_body_composition">Kroppssammansättning</string>
<string name="cap_history_read">Historikläsning</string>
<string name="cap_live_weight">Livevikt</string>
<string name="cap_time_sync">Tidssynk</string>
<string name="cap_unit_config">Enhetsval</string>
<string name="cap_user_sync">Användarsynk</string>
<string name="no_special_configuration_available">Ingen extra konfiguration finns för den här vågen.</string>
<string name="tuning_aggressive">Aggressiv</string>
<string name="tuning_balanced">Balanserad</string>
<string name="tuning_conservative">Försiktig</string>
</resources>

8
gradle/libs.versions.toml
View File

@@ -1,6 +1,6 @@
[versions]
agp = "8.7.3"
kotlin = "2.0.21"
kotlin = "2.2.0"
coreKtx = "1.15.0"
lifecycle = "2.8.7"
activityCompose = "1.9.3"
@@ -9,8 +9,9 @@ navigationCompose = "2.8.5"
okhttp = "4.12.0"
kotlinxSerialization = "1.7.3"
datastore = "1.1.1"
room = "2.6.1"
ksp = "2.0.21-1.0.28"
room = "2.7.2"
ksp = "2.2.0-2.0.2"
blessedKotlin = "3.0.12"
[libraries]
androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
@@ -31,6 +32,7 @@ kotlinx-serialization-json = { group = "org.jetbrains.kotlinx", name = "kotlinx-
androidx-room-runtime = { group = "androidx.room", name = "room-runtime", version.ref = "room" }
androidx-room-ktx = { group = "androidx.room", name = "room-ktx", version.ref = "room" }
androidx-room-compiler = { group = "androidx.room", name = "room-compiler", version.ref = "room" }
blessed-kotlin = { group = "com.github.weliem", name = "blessed-kotlin", version.ref = "blessedKotlin" }
[plugins]
android-application = { id = "com.android.application", version.ref = "agp" }

4
settings.gradle.kts
View File

@@ -16,6 +16,10 @@ dependencyResolutionManagement {
repositories {
google()
mavenCentral()
// Blessed-Kotlin (BLE-biblioteket som openScale-drivrutinerna använder) finns bara på JitPack
maven("https://jitpack.io") {
content { includeGroup("com.github.weliem") }
}
}
}