name: Build Windows Release

on:
  push:
    branches:
      - main
    tags:
      - 'v*'
  pull_request:
    branches:
      - main
  workflow_dispatch:

jobs:
  build-windows:
    # Gitea Actions 使用自建 act_runner，不提供 GitHub 托管的 windows-latest。
    # 这里匹配常见的 Windows Runner 标签；Runner 需注册为 windows 或 windows-latest 才会接单。
    runs-on:
      - windows
    defaults:
      run:
        shell: msys2 {0}

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup MSYS2 build environment
        uses: msys2/setup-msys2@v2
        with:
          msystem: UCRT64
          update: true
          install: >-
            git
            zip
            p7zip
            mingw-w64-ucrt-x86_64-toolchain
            mingw-w64-ucrt-x86_64-cmake
            mingw-w64-ucrt-x86_64-ninja
            mingw-w64-ucrt-x86_64-qt6-base
            mingw-w64-ucrt-x86_64-opencv

      - name: Configure
        run: |
          cmake -S . -B build-windows -G Ninja \
            -DCMAKE_BUILD_TYPE=Release \
            -DCMAKE_PREFIX_PATH=/ucrt64

      - name: Build
        run: |
          cmake --build build-windows --parallel "$(nproc)"

      - name: Package
        run: |
          set -euo pipefail
          APP_NAME="chengnan"
          PACKAGE_NAME="chengnan-windows-x86_64"
          PACKAGE_DIR="dist-windows/${PACKAGE_NAME}"
          EXE="build-windows/${APP_NAME}.exe"

          test -f "$EXE"
          rm -rf dist-windows
          mkdir -p "$PACKAGE_DIR"
          cp "$EXE" "$PACKAGE_DIR/"

          # 部署 Qt 运行时和插件。
          if command -v windeployqt >/dev/null 2>&1; then
            windeployqt --release --no-translations "$PACKAGE_DIR/${APP_NAME}.exe"
          elif command -v windeployqt6 >/dev/null 2>&1; then
            windeployqt6 --release --no-translations "$PACKAGE_DIR/${APP_NAME}.exe"
          else
            echo "windeployqt not found" >&2
            exit 1
          fi

          # 收集 MinGW/MSYS2/OpenCV 运行时 DLL。ldd 会列出 exe/dll 依赖；循环几轮收集二级依赖。
          for round in 1 2 3; do
            while IFS= read -r binary; do
              while IFS= read -r dll; do
                [ -f "$dll" ] || continue
                cp -n "$dll" "$PACKAGE_DIR/" || true
              done < <(ldd "$binary" \
                | awk '/=> \/ucrt64\/bin\// {print $3} /^\/ucrt64\/bin\// {print $1}' \
                | sort -u)
            done < <(find "$PACKAGE_DIR" -maxdepth 2 -type f \( -name '*.exe' -o -name '*.dll' \) | sort)
          done

          cat > "$PACKAGE_DIR/README.txt" <<'EOF'
          chengnan Windows x86_64 发布包

          运行方式：
          1. 解压整个目录。
          2. 双击 chengnan.exe 运行。

          说明：
          - 本目录已包含 Qt、OpenCV 和 MinGW 运行时 DLL。
          - 请不要只复制 chengnan.exe，需保留同目录 DLL 和 Qt plugins 子目录。
          EOF

          (cd dist-windows && 7z a -tzip "${PACKAGE_NAME}.zip" "${PACKAGE_NAME}" >/dev/null)
          (cd dist-windows && sha256sum "${PACKAGE_NAME}.zip" > "${PACKAGE_NAME}.zip.sha256")

      - name: Verify package
        run: |
          test -s dist-windows/chengnan-windows-x86_64.zip
          sha256sum -c dist-windows/chengnan-windows-x86_64.zip.sha256
          7z l dist-windows/chengnan-windows-x86_64.zip | grep 'chengnan.exe'

      - name: Upload artifact
        uses: actions/upload-artifact@v3
        with:
          name: chengnan-windows-x86_64
          path: |
            dist-windows/chengnan-windows-x86_64.zip
            dist-windows/chengnan-windows-x86_64.zip.sha256
          if-no-files-found: error