#!/bin/bash
# ============================================================
# 闲言APP — Linux打包脚本 (AppImage)
# 创建时间: 2026-05-18
# 更新时间: 2026-05-18
# 作用: 将Flutter Linux构建产物打包为AppImage通用安装包
# 上次更新: 初始创建
# ============================================================

set -e

APP_NAME="xianyan"
APP_DISPLAY_NAME="闲言"
APP_ID="apps.xy.xianyan"
APP_VERSION="5.2.0"
BUILD_DIR="build/linux/x64/release/bundle"
OUTPUT_DIR="dist"
APPDIR="${OUTPUT_DIR}/appimage_staging/${APP_NAME}.AppDir"

echo "=========================================="
echo "  ${APP_DISPLAY_NAME} — AppImage 打包"
echo "=========================================="

if [ ! -d "${BUILD_DIR}" ]; then
  echo "❌ 构建产物不存在，请先运行: flutter build linux --release"
  exit 1
fi

which appimagetool > /dev/null 2>&1 || {
  echo "📥 下载 appimagetool..."
  ARCH=$(uname -m)
  wget -q "https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-${ARCH}.AppImage" -O /tmp/appimagetool
  chmod +x /tmp/appimagetool
  APPIMAGETOOL="/tmp/appimagetool"
}
APPIMAGETOOL="${APPIMAGETOOL:-appimagetool}"

rm -rf "${APPDIR}"
mkdir -p "${APPDIR}/usr/bin"
mkdir -p "${APPDIR}/usr/lib"
mkdir -p "${APPDIR}/usr/share/applications"
mkdir -p "${APPDIR}/usr/share/metainfo"
mkdir -p "${APPDIR}/usr/share/icons/hicolor/scalable/apps"
mkdir -p "${APPDIR}/usr/share/icons/hicolor/256x256/apps"

echo "📦 复制构建产物..."
cp -r "${BUILD_DIR}"/* "${APPDIR}/usr/bin/"
chmod +x "${APPDIR}/usr/bin/${APP_NAME}"

echo "📝 创建AppRun入口..."
cat > "${APPDIR}/AppRun" << 'EOF'
#!/bin/bash
SELF=$(readlink -f "$0")
HERE=${SELF%/*}
export PATH="${HERE}/usr/bin:${PATH}"
export LD_LIBRARY_PATH="${HERE}/usr/lib:${HERE}/usr/bin/lib:${LD_LIBRARY_PATH}"
export XDG_DATA_DIRS="${HERE}/usr/share:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
export GSETTINGS_SCHEMA_DIR="${HERE}/usr/share/glib-2.0/schemas:${GSETTINGS_SCHEMA_DIR}"

# GSTREAMER插件路径
export GST_PLUGIN_SYSTEM_PATH="${HERE}/usr/lib/gstreamer-1.0:${GST_PLUGIN_SYSTEM_PATH:-}"

exec "${HERE}/usr/bin/xianyan" "$@"
EOF
chmod +x "${APPDIR}/AppRun"

echo "🖥️  创建desktop文件..."
if [ -f "linux/${APP_ID}.desktop" ]; then
  cp "linux/${APP_ID}.desktop" "${APPDIR}/"
  sed -i "s|Exec=xianyan|Exec=${APP_NAME}|g" "${APPDIR}/${APP_ID}.desktop"
  sed -i "s|Icon=apps.xy.xianyan|Icon=${APP_ID}|g" "${APPDIR}/${APP_ID}.desktop"
else
  cat > "${APPDIR}/${APP_ID}.desktop" << EOF
[Desktop Entry]
Type=Application
Version=1.5
Name=${APP_DISPLAY_NAME}
Name[zh_CN]=${APP_DISPLAY_NAME}
Name[en]=Xianyan
Comment=文字阅读更纯粹
Icon=${APP_ID}
Exec=${APP_NAME}
Terminal=false
StartupNotify=true
Categories=Utility;Literature;Graphics;
StartupWMClass=${APP_NAME}
EOF
fi

echo "📋 复制AppStream元数据..."
if [ -f "linux/${APP_ID}.appdata.xml" ]; then
  cp "linux/${APP_ID}.appdata.xml" "${APPDIR}/usr/share/metainfo/"
fi

echo "🎨 创建占位图标..."
SVG_ICON="${APPDIR}/usr/share/icons/hicolor/scalable/apps/${APP_ID}.svg"
cat > "${SVG_ICON}" << 'SVGEOF'
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256">
  <defs>
    <linearGradient id="bg" x1="0%" y1="0%" x2="100%" y2="100%">
      <stop offset="0%" style="stop-color:#1a1a2e"/>
      <stop offset="100%" style="stop-color:#16213e"/>
    </linearGradient>
  </defs>
  <rect width="256" height="256" rx="56" fill="url(#bg)"/>
  <text x="128" y="160" text-anchor="middle" font-size="120" font-family="serif" fill="#e8e8e8">言</text>
</svg>
SVGEOF

mkdir -p "${APPDIR}/.DirIcon"
cp "${SVG_ICON}" "${APPDIR}/.DirIcon" 2>/dev/null || true

mkdir -p "${OUTPUT_DIR}"
APPIMAGE_FILE="${OUTPUT_DIR}/${APP_NAME}_${APP_VERSION}_x86_64.AppImage"
echo "🔨 构建AppImage..."
${APPIMAGETOOL} "${APPDIR}" "${APPIMAGE_FILE}"

APPIMAGE_SIZE=$(du -sh "${APPIMAGE_FILE}" | cut -f1)
echo ""
echo "✅ AppImage 打包完成!"
echo "   文件: ${APPIMAGE_FILE}"
echo "   大小: ${APPIMAGE_SIZE}"
echo ""
echo "运行命令: chmod +x ${APPIMAGE_FILE} && ./${APPIMAGE_FILE}"

rm -rf "${APPDIR}"