#!/usr/bin/env bash
# ============================================================
#  打包 C++ 项目为 tar.gz(自包含：可执行文件 + 运行库)
#  用法:
#    ./packaging/build-release.sh                # 仅命令行版
#    ./packaging/build-release.sh --with-gui     # 含 GUI(需 QT_PREFIX)
#  产物: dist/fpv-relay-<版本>-linux-x86_64.tar.gz
# ============================================================
set -e

REPO="$(cd "$(dirname "$0")/.." && pwd)"
WITH_GUI=0
[ "$1" = "--with-gui" ] && WITH_GUI=1

VERSION="$(cd "$REPO" && git describe --tags --always 2>/dev/null || date +%Y%m%d)"
NAME="fpv-relay-${VERSION}-linux-x86_64"
DIST="${REPO}/dist"
STAGE="${DIST}/${NAME}"
LIBDIR="${STAGE}/lib"

echo "==> 构建(CLI)"
cd "${REPO}"
cmake --preset cli >/dev/null
cmake --build --preset cli -j"$(nproc)" >/dev/null

if [ "$WITH_GUI" = "1" ]; then
    : "${QT_PREFIX:?--with-gui 需要设置 QT_PREFIX 指向 Qt 安装目录}"
    echo "==> 构建(GUI)"
    cmake --preset gui >/dev/null
    cmake --build --preset gui -j"$(nproc)" >/dev/null
fi

echo "==> 准备目录 ${STAGE}"
rm -rf "${STAGE}"
mkdir -p "${STAGE}/bin" "${LIBDIR}" "${STAGE}/tools"

cp "${REPO}/build/fpv-relay" "${STAGE}/bin/"
cp "${REPO}/tools/play-udp.sh" "${STAGE}/tools/" 2>/dev/null || true
cp "${REPO}/config.example.yaml" "${STAGE}/"
cp "${REPO}/README.md" "${STAGE}/" 2>/dev/null || true

# 收集并复制非系统共享库(递归)
bundle_libs() {
    ldd "$1" 2>/dev/null | awk '{print $3}' | grep '^/' | while read -r lib; do
        base="$(basename "$lib")"
        case "$base" in
            libc.so*|libm.so*|libpthread*|librt*|libdl*|libgcc_s*|libstdc++*|ld-linux*|libnsl*|libresolv*) continue ;;
            libgst*|libglib-2.0*|libgobject-2.0*|libgmodule-2.0*|libgio-2.0*|libgthread-2.0*|liborc-0.4*|libav*|libswscale*|libswresample*|libpostproc*|libx264*|libx265*|libvpx*) continue ;;
        esac
        if [ ! -e "${LIBDIR}/${base}" ]; then
            cp -L "$lib" "${LIBDIR}/${base}"
            bundle_libs "$lib"
        fi
    done
}

echo "==> 打包命令行版运行库"
bundle_libs "${STAGE}/bin/fpv-relay"

if [ "$WITH_GUI" = "1" ]; then
    echo "==> 打包 GUI 与 Qt 运行环境"
    cp "${REPO}/build-gui/fpv-relay-gui" "${STAGE}/bin/"
    bundle_libs "${STAGE}/bin/fpv-relay-gui"

    # 复制全部 Qt6 运行库(含 QML 插件会用到的)，并补齐它们的依赖
    cp -L "${QT_PREFIX}/lib/"libQt6*.so* "${LIBDIR}/" 2>/dev/null || true
    for l in "${LIBDIR}"/libQt6*.so*; do
        [ -e "$l" ] && bundle_libs "$l"
    done

    # QML 模块的 qmldir(依赖“程序目录”作为导入路径)
    cp -rL "${REPO}/build-gui/FpvRelay" "${STAGE}/bin/" 2>/dev/null || true

    # Qt 插件(平台/GL/图像格式)
    mkdir -p "${STAGE}/plugins/platforms" "${STAGE}/plugins/xcbglintegrations"
    for p in libqxcb.so libqminimal.so libqoffscreen.so; do
        [ -f "${QT_PREFIX}/plugins/platforms/${p}" ] && cp -L "${QT_PREFIX}/plugins/platforms/${p}" "${STAGE}/plugins/platforms/"
    done
    cp -L "${QT_PREFIX}/plugins/xcbglintegrations/"*.so "${STAGE}/plugins/xcbglintegrations/" 2>/dev/null || true

    # 必要 QML 模块
    mkdir -p "${STAGE}/qml"
    for m in QtQml QtQuick Qt Qt5Compat; do
        [ -d "${QT_PREFIX}/qml/${m}" ] && cp -rL "${QT_PREFIX}/qml/${m}" "${STAGE}/qml/"
    done

    # 打包 QML 插件与 Qt 插件自身的依赖
    find "${STAGE}/qml" "${STAGE}/plugins" -name "*.so" 2>/dev/null | while read -r so; do
        bundle_libs "$so"
    done
fi

cat > "${STAGE}/run.sh" <<'EOF'
#!/usr/bin/env bash
DIR="$(cd "$(dirname "$0")" && pwd)"
export LD_LIBRARY_PATH="$DIR/lib:${LD_LIBRARY_PATH}"
exec "$DIR/bin/fpv-relay" "$@"
EOF
chmod +x "${STAGE}/run.sh"

if [ "$WITH_GUI" = "1" ]; then
cat > "${STAGE}/run-gui.sh" <<'EOF'
#!/usr/bin/env bash
DIR="$(cd "$(dirname "$0")" && pwd)"
export LD_LIBRARY_PATH="$DIR/lib:${LD_LIBRARY_PATH}"
export QT_PLUGIN_PATH="$DIR/plugins"
export QT_QPA_PLATFORM_PLUGIN_PATH="$DIR/plugins/platforms"
export QML2_IMPORT_PATH="$DIR/qml"
export QML_IMPORT_PATH="$DIR/qml"
exec "$DIR/bin/fpv-relay-gui" "$@"
EOF
chmod +x "${STAGE}/run-gui.sh"
fi

echo "==> 生成 tar.gz"
tar -C "${DIST}" -czf "${DIST}/${NAME}.tar.gz" "${NAME}"
echo
echo "完成: ${DIST}/${NAME}.tar.gz"
du -sh "${DIST}/${NAME}.tar.gz"