#!/bin/sh
# agent-helm — klient-installer (självständig binär, Node + node-pty inbäddat).
#
#   curl -fsSL https://gitea.brasse-pc.eu/brasse/agent-helm/raw/branch/main/install.sh | sh
#
# Valfria env-vars (annars defaults / fyll i config efteråt):
#   AGENT_HELM_TOKEN=...        delad token mot servern
#   AGENT_HELM_SERVER=wss://... server-URL (default wss://rcai.brasse-pc.eu)
#   AGENT_CMD=gemini            kommandot som körs i pty:n
#   PREFIX=/usr/local           install-prefix för binären
set -eu

OWNER=brasse
REPO=agent-helm
BASE=https://gitea.brasse-pc.eu
API="$BASE/api/v1/repos/$OWNER/$REPO"

# --- OS + arkitektur ---
[ "$(uname -s)" = "Linux" ] || { echo "agent-helm: bara Linux stöds just nu"; exit 1; }
case "$(uname -m)" in
  x86_64|amd64)  ARCH=x64 ;;
  aarch64|arm64) ARCH=arm64 ;;
  *) echo "agent-helm: arkitektur $(uname -m) stöds inte (endast x64/arm64)"; exit 1 ;;
esac
ASSET="agent-helm-linux-$ARCH"

command -v curl >/dev/null 2>&1 || { echo "agent-helm: curl krävs"; exit 1; }

# --- version: 'latest' (rullande master-bygge) om inget annat anges ---
TAG="${AGENT_HELM_VERSION:-latest}"
URL="$BASE/$OWNER/$REPO/releases/download/$TAG/$ASSET"

# --- bin-katalog: /usr/local/bin om root/skrivbar, annars ~/.local/bin (ingen sudo).
# För system-wide utan att vara root:  curl -fsSL ... | sudo sh
PREFIX="${PREFIX:-/usr/local}"
if [ "$(id -u)" = 0 ] || { mkdir -p "$PREFIX/bin" 2>/dev/null && [ -w "$PREFIX/bin" ]; }; then
  BIN="$PREFIX/bin"
else
  BIN="$HOME/.local/bin"
fi
mkdir -p "$BIN"

echo "agent-helm: hämtar $ASSET ($TAG) -> $BIN/agent-helm"
tmp=$(mktemp)
curl -fSL "$URL" -o "$tmp"
chmod +x "$tmp"
install -m 0755 "$tmp" "$BIN/agent-helm"
rm -f "$tmp"

# --- config ---
CFGDIR="$HOME/.config/agent-helm"
CFG="$CFGDIR/config.env"
mkdir -p "$CFGDIR"
if [ ! -f "$CFG" ]; then
  cat > "$CFG" <<EOF
# agent-helm klient-config
AGENT_HELM_TOKEN=${AGENT_HELM_TOKEN:-}
SERVER_URL=${AGENT_HELM_SERVER:-wss://rcai.brasse-pc.eu}
AGENT_CMD=${AGENT_CMD:-gemini}
# AGENT_CWD=/sökväg/till/projekt
EOF
  chmod 600 "$CFG"
  echo "agent-helm: config skapad: $CFG"
else
  echo "agent-helm: behåller befintlig config: $CFG"
fi

# --- systemd user-service (valfri) ---
UNITDIR="$HOME/.config/systemd/user"
mkdir -p "$UNITDIR"
cat > "$UNITDIR/agent-helm.service" <<EOF
[Unit]
Description=agent-helm klient (daemon)
After=network-online.target

[Service]
EnvironmentFile=$CFG
ExecStart=$BIN/agent-helm
Restart=on-failure
RestartSec=3

[Install]
WantedBy=default.target
EOF

echo ""
echo "  ✓ installerad: $BIN/agent-helm   (version $TAG, $ARCH)"
case ":$PATH:" in *":$BIN:"*) ;; *) echo "  ⚠ lägg till $BIN i din PATH";; esac
echo ""
echo "  Nästa steg:"
echo "   1) sätt token:        \${EDITOR:-nano} $CFG"
echo "   2a) kör direkt:       set -a; . $CFG; agent-helm"
echo "   2b) eller som tjänst: systemctl --user daemon-reload && systemctl --user enable --now agent-helm"