#!/usr/bin/env bash
# Build SyncGames-x86_64.AppImage (thin GUI + agent).
# Usage: from SyncGames/agent/, ./packaging/build-appimage.sh
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
cd "$ROOT"

VERSION="$(python3 -c "from syncgames import __version__; print(__version__)" 2>/dev/null || echo "0.1.0")"
# Prefer package version when installed in venv
if [[ -d "${ROOT}/.venv" ]]; then
  # shellcheck source=/dev/null
  source "${ROOT}/.venv/bin/activate"
  VERSION="$(python3 -c "from syncgames import __version__; print(__version__)")"
fi

OUT_NAME="SyncGames-${VERSION}-x86_64.AppImage"
APPDIR="${ROOT}/build/appimage/AppDir"
BUILD_BIN="${ROOT}/build/appimage"
APPIMAGETOOL_URL="${APPIMAGETOOL_URL:-https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-x86_64.AppImage}"
APPIMAGETOOL="${APPIMAGETOOL:-${BUILD_BIN}/appimagetool-x86_64.AppImage}"

echo "==> Version: ${VERSION}"
echo "==> Output:  ${OUT_NAME}"

if [[ ! -d "${ROOT}/.venv" ]]; then
  echo "==> Creating .venv"
  python3 -m venv "${ROOT}/.venv"
fi
# shellcheck source=/dev/null
source "${ROOT}/.venv/bin/activate"
python3 -m pip install -q -U pip
python3 -m pip install -q -e ".[build]"

echo "==> PyInstaller"
rm -rf "${ROOT}/build/pyinstaller" "${ROOT}/dist/SyncGames" || true
pyinstaller "${ROOT}/packaging/pyinstaller.spec"

if [[ ! -x "${ROOT}/dist/SyncGames/SyncGames" ]]; then
  echo "PyInstaller did not produce dist/SyncGames/SyncGames" >&2
  exit 1
fi

echo "==> Assemble AppDir"
rm -rf "$APPDIR"
mkdir -p "$APPDIR/usr/bin" \
  "$APPDIR/usr/lib" \
  "$APPDIR/usr/share/applications" \
  "$APPDIR/usr/share/icons/hicolor/256x256/apps" \
  "$APPDIR/usr/share/icons/hicolor/128x128/apps" \
  "$APPDIR/usr/share/metainfo"

cp -a "${ROOT}/dist/SyncGames" "$APPDIR/usr/lib/syncgames"
ln -sf "../lib/syncgames/SyncGames" "$APPDIR/usr/bin/SyncGames"

python3 - <<'PY'
from PIL import Image
from pathlib import Path

base = Path("build/appimage/AppDir/usr/share/icons/hicolor")
color = (24, 72, 64, 255)  # deep teal — save/sync feel, not purple AI default
for size in (256, 128):
    p = base / f"{size}x{size}" / "apps" / "syncgames.png"
    p.parent.mkdir(parents=True, exist_ok=True)
    Image.new("RGBA", (size, size), color).save(p)
PY

cp "$ROOT/packaging/appimage/syncgames.desktop" "$APPDIR/usr/share/applications/"
cp "$APPDIR/usr/share/applications/syncgames.desktop" "$APPDIR/"

cat > "$APPDIR/usr/share/metainfo/io.github.syncgames.appdata.xml" <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<component type="desktop-application">
  <id>io.github.syncgames</id>
  <name>SyncGames</name>
  <summary>Session-gated game save sync setup and management</summary>
  <metadata_license>CC0-1.0</metadata_license>
  <project_license>MIT</project_license>
  <description>
    <p>Configure MinIO SSOT connection, manage game save paths, and run start/end session sync with lease and version guardrails.</p>
  </description>
  <launchable type="desktop-id">syncgames.desktop</launchable>
  <content_rating type="oars-1.1"/>
  <releases>
    <release version="${VERSION}"/>
  </releases>
</component>
EOF

cat > "$APPDIR/AppRun" <<'SH'
#!/bin/bash
HERE="$(dirname "$(readlink -f "$0")")"
export PATH="${HERE}/usr/bin:${PATH}"
LIBDIR="${HERE}/usr/lib/syncgames"
export LD_LIBRARY_PATH="${LIBDIR}${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
if [[ -d "${LIBDIR}/PySide6" ]]; then
  export QT_PLUGIN_PATH="${LIBDIR}/PySide6/Qt/plugins${QT_PLUGIN_PATH:+:$QT_PLUGIN_PATH}"
fi
exec "${HERE}/usr/bin/SyncGames" "$@"
SH
chmod +x "$APPDIR/AppRun"

ln -sf "usr/share/icons/hicolor/256x256/apps/syncgames.png" "$APPDIR/.DirIcon" || true
# appimagetool expects Icon= name at AppDir root
cp "$APPDIR/usr/share/icons/hicolor/256x256/apps/syncgames.png" "$APPDIR/syncgames.png"

echo "==> appimagetool"
mkdir -p "$BUILD_BIN"
if [[ ! -x "$APPIMAGETOOL" ]]; then
  curl -fsSL -o "$APPIMAGETOOL" "$APPIMAGETOOL_URL"
  chmod +x "$APPIMAGETOOL"
fi

rm -f "${ROOT}/dist/${OUT_NAME}" || true
mkdir -p "${ROOT}/dist"
ARCH=x86_64 "$APPIMAGETOOL" "$APPDIR" "${ROOT}/dist/${OUT_NAME}"
echo "==> Built ${ROOT}/dist/${OUT_NAME}"