name: release-tools

# På varje push till master/main: bygg de tools som fått ändringar
# (linux x64 + arm64) och lägg binärerna på en rullande
# "<tool>-latest"-release på släppsidan i Gitea.
on:
  push:
    branches: [master, main]
  workflow_dispatch: {} # manuell körning bygger ALLA tools

jobs:
  build-release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # hela historiken behövs för diffen mot 'before'

      - name: Detektera ändrade tools
        id: changed
        run: |
          TOOLS="pixel-sprite-maker mesh-tool bitmap-font-maker sfx-maker"
          BEFORE="${{ github.event.before }}"
          CHANGED=""
          if [ "${{ github.event_name }}" = "workflow_dispatch" ] \
             || [ -z "$BEFORE" ] \
             || echo "$BEFORE" | grep -Eq '^0+$' \
             || ! git cat-file -e "$BEFORE" 2>/dev/null; then
            echo "första push / manuell körning -> bygger alla tools"
            CHANGED="$TOOLS"
          else
            for t in $TOOLS; do
              if ! git diff --quiet "$BEFORE" "${{ github.sha }}" -- "$t/"; then
                CHANGED="$CHANGED $t"
              fi
            done
          fi
          CHANGED="$(echo $CHANGED)"   # trimma whitespace
          echo "tools=$CHANGED" >> "$GITHUB_OUTPUT"
          echo "bygger: ${CHANGED:-inget}"

      - name: Installera Go
        if: steps.changed.outputs.tools != ''
        uses: actions/setup-go@v5
        with:
          go-version: "1.24"
          cache: false

      - name: Testa + bygg (x64 + arm64)
        if: steps.changed.outputs.tools != ''
        run: |
          set -e
          VERSION="latest-$(git rev-parse --short HEAD)"
          for t in ${{ steps.changed.outputs.tools }}; do
            case "$t" in
              pixel-sprite-maker) BIN=spritec ;;
              mesh-tool)          BIN=mesht ;;
              bitmap-font-maker)  BIN=fontc ;;
              sfx-maker)          BIN=sfxc ;;
              *) echo "okänt tool $t"; exit 1 ;;
            esac
            echo "=== $t ($BIN) ==="
            cd "$t"
            go test ./...
            mkdir -p build
            GOOS=linux GOARCH=amd64 go build -trimpath \
              -ldflags "-s -w -X main.version=$VERSION" -o "build/$BIN-linux-x64" .
            GOOS=linux GOARCH=arm64 go build -trimpath \
              -ldflags "-s -w -X main.version=$VERSION" -o "build/$BIN-linux-arm64" .
            (cd build && sha256sum "$BIN"-linux-* > checksums.txt && ls -la)
            cd ..
          done

      - name: Skapa/uppdatera releaser + ladda upp binärer
        if: steps.changed.outputs.tools != ''
        env:
          API: http://gitea-d:3000/api/v1
          REPO: ${{ github.repository }}
          TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -e
          for t in ${{ steps.changed.outputs.tools }}; do
            case "$t" in
              pixel-sprite-maker) BIN=spritec ;;
              mesh-tool)          BIN=mesht ;;
              bitmap-font-maker)  BIN=fontc ;;
              sfx-maker)          BIN=sfxc ;;
            esac
            TAG="$t-latest"
            BODY="$t (binär: $BIN) - rullande bygge från senaste master. Commit: ${{ github.sha }}. Arkitekturer: linux x64 + arm64 (Pi5)."
            rid=$(curl -s -X POST "$API/repos/$REPO/releases" \
              -H "Authorization: token $TOKEN" -H 'Content-Type: application/json' \
              -d "{\"tag_name\":\"$TAG\",\"name\":\"$TAG\",\"body\":\"$BODY\"}" | jq -r '.id // empty')
            [ -z "$rid" ] && rid=$(curl -s "$API/repos/$REPO/releases/tags/$TAG" \
              -H "Authorization: token $TOKEN" | jq -r '.id')
            echo "$t -> release id $rid"
            for f in "$BIN-linux-x64" "$BIN-linux-arm64" checksums.txt; do
              aid=$(curl -s "$API/repos/$REPO/releases/$rid/assets" \
                -H "Authorization: token $TOKEN" | jq -r ".[] | select(.name==\"$f\") | .id")
              if [ -n "$aid" ] && [ "$aid" != "null" ]; then
                curl -s -X DELETE "$API/repos/$REPO/releases/$rid/assets/$aid" \
                  -H "Authorization: token $TOKEN" -o /dev/null
              fi
              curl -s -X POST "$API/repos/$REPO/releases/$rid/assets?name=$f" \
                -H "Authorization: token $TOKEN" \
                -F "attachment=@$t/build/$f" -o /dev/null -w "  $f -> HTTP %{http_code}\n"
            done
          done