name: Build Windows Release with MSYS2

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

jobs:
  build-windows-msys2:
    # 需要 Gitea act_runner 运行在 Windows，并且能访问 GitHub 以拉取 actions/checkout、msys2/setup-msys2、actions/upload-artifact。
    # 如果你的 runner 使用了自定义标签，可以在 Gitea runner 配置中给它同时加上 windows 标签。
    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
            curl
            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: |
          set -euo pipefail
          cmake -S . -B build-windows-msys2 -G Ninja \
            -DCMAKE_BUILD_TYPE=Release \
            -DCMAKE_PREFIX_PATH=/ucrt64

      - name: Build
        run: |
          set -euo pipefail
          cmake --build build-windows-msys2 --parallel "$(nproc)"

      - name: Package
        run: |
          set -euo pipefail
          APP_NAME="chengnan"
          PACKAGE_NAME="chengnan-windows-x86_64-msys2"
          PACKAGE_DIR="dist-windows-msys2/${PACKAGE_NAME}"
          EXE="build-windows-msys2/${APP_NAME}.exe"

          test -f "$EXE"
          rm -rf dist-windows-msys2
          mkdir -p "$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 MSYS2 发布包

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

          说明：
          - 本目录由 Windows Runner 使用 MSYS2 UCRT64 构建生成。
          - 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-msys2 && 7z a -tzip "${PACKAGE_NAME}.zip" "${PACKAGE_NAME}" >/dev/null)
          (cd dist-windows-msys2 && sha256sum "${PACKAGE_NAME}.zip" > "${PACKAGE_NAME}.zip.sha256")

          # 当前 Gitea 上传入口约 60 秒会返回 502；大文件按 15 MiB 分片上传。
          ZIP="dist-windows-msys2/${PACKAGE_NAME}.zip"
          split -b 15M -d -a 3 "$ZIP" "${ZIP}.part-"
          (cd dist-windows-msys2 && sha256sum "${PACKAGE_NAME}.zip".part-* > "${PACKAGE_NAME}.zip.parts.sha256")
          du -h "$ZIP" "${ZIP}".part-*

      - name: Verify package
        run: |
          set -euo pipefail
          test -s dist-windows-msys2/chengnan-windows-x86_64-msys2.zip
          test -s dist-windows-msys2/chengnan-windows-x86_64-msys2.zip.part-000
          test -s dist-windows-msys2/chengnan-windows-x86_64-msys2.zip.sha256
          test -s dist-windows-msys2/chengnan-windows-x86_64-msys2.zip.parts.sha256
          (cd dist-windows-msys2 && sha256sum -c chengnan-windows-x86_64-msys2.zip.sha256)
          (cd dist-windows-msys2 && sha256sum -c chengnan-windows-x86_64-msys2.zip.parts.sha256)
          7z l dist-windows-msys2/chengnan-windows-x86_64-msys2.zip | grep 'chengnan.exe'
          limit=$((20 * 1024 * 1024))
          for part in dist-windows-msys2/chengnan-windows-x86_64-msys2.zip.part-*; do
            size="$(wc -c < "$part")"
            echo "$(basename "$part") $size"
            if [ "$size" -gt "$limit" ]; then
              echo "$part is too large for the current Gitea upload path" >&2
              exit 1
            fi
          done

      - name: Upload artifact
        uses: actions/upload-artifact@v3
        with:
          name: chengnan-windows-x86_64-msys2
          path: |
            dist-windows-msys2/chengnan-windows-x86_64-msys2.zip
            dist-windows-msys2/chengnan-windows-x86_64-msys2.zip.sha256
            dist-windows-msys2/chengnan-windows-x86_64-msys2.zip.part-*
            dist-windows-msys2/chengnan-windows-x86_64-msys2.zip.parts.sha256
          if-no-files-found: error

      - name: Upload package to Gitea Packages
        if: ${{ github.event_name != 'pull_request' }}
        env:
          PACKAGE_TOKEN: ${{ secrets.PACKAGE_TOKEN }}
        run: |
          set -euo pipefail
          PACKAGE_NAME="chengnan-windows-x86_64-msys2"
          VERSION="${GITHUB_SHA:-manual}"
          VERSION="${VERSION:0:10}"
          OWNER="${GITHUB_REPOSITORY%%/*}"
          API_BASE="${GITHUB_SERVER_URL:-https://git.luochen570.cn}/api/packages/${OWNER}/generic/chengnan/${VERSION}"
          TOKEN="${PACKAGE_TOKEN:-${GITHUB_TOKEN:-}}"
          test -n "$TOKEN"
          upload_file() {
            local src="$1"
            local url="$2"
            local status
            status="$(curl --show-error --silent --location \
              --header "Authorization: token ${TOKEN}" \
              --upload-file "$src" \
              --write-out '%{http_code}' \
              --output /tmp/gitea-upload-response.txt \
              "$url")"
            if [ "$status" != "201" ] && [ "$status" != "200" ]; then
              echo "Upload failed with HTTP ${status}: ${url}" >&2
              cat /tmp/gitea-upload-response.txt >&2
              exit 1
            fi
          }
          for part in dist-windows-msys2/${PACKAGE_NAME}.zip.part-*; do
            upload_file "$part" "${API_BASE}/$(basename "$part")"
          done
          upload_file "dist-windows-msys2/${PACKAGE_NAME}.zip.sha256" "${API_BASE}/${PACKAGE_NAME}.zip.sha256"
          upload_file "dist-windows-msys2/${PACKAGE_NAME}.zip.parts.sha256" "${API_BASE}/${PACKAGE_NAME}.zip.parts.sha256"
          echo "Package uploaded to: ${API_BASE}/"
          echo "Download all ${PACKAGE_NAME}.zip.part-* files, then reconstruct with: cat ${PACKAGE_NAME}.zip.part-* > ${PACKAGE_NAME}.zip"