name: Create Release (on tag)

on:
  push:
    tags:
      - '*'

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository (at tag)
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          persist-credentials: true

      - name: Setup .NET
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: 9.0.x

      - name: Restore dependencies
        run: dotnet restore

      - name: Build
        run: dotnet build --no-restore -c Release

      - name: Determine tag version
        id: tag_version
        run: |
          set -e
          # GITHUB_REF example: refs/tags/v0.0.1 or refs/tags/0.0.1
          echo "GITHUB_REF = ${GITHUB_REF}"
          TAG=${GITHUB_REF#refs/tags/}
          # remove leading 'v' or 'V' if present
          VERSION=${TAG#v}
          VERSION=${VERSION#V}
          echo "tag='$TAG' -> version='$VERSION'"
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Pack (use tag version)
        run: |
          set -e
          echo "Packing with version=${{ steps.tag_version.outputs.version }}"
          dotnet pack --no-build -c Release -o ./packages -p:PackageVersion=${{ steps.tag_version.outputs.version }}
      
      - name: Get Version and Package Path
        id: get_version
        run: |
          set -e
          PACKAGE_FILE=$(find ./packages -name "*.nupkg" | head -n 1)
          if [ -z "$PACKAGE_FILE" ]; then
            echo "No .nupkg file found in ./packages"
            exit 1
          fi
          # 从 .nupkg（zip）里读取 .nuspec 并提取 <version> 标签（稳妥）
          VERSION=$(unzip -p "$PACKAGE_FILE" *.nuspec 2>/dev/null | sed -n 's:.*<version>\(.*\)</version>.*:\1:p' | head -n1)
          if [ -z "$VERSION" ]; then
            echo "Failed to parse version from $PACKAGE_FILE"
            exit 1
          fi
          BASENAME=$(basename "$PACKAGE_FILE")
          echo "package_file=$PACKAGE_FILE" >> $GITHUB_OUTPUT
          echo "package_basename=$BASENAME" >> $GITHUB_OUTPUT
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Create GitHub Release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ github.ref_name }}
          release_name: "Release ${{ github.ref_name }}"
          body: "Release created by CI for tag ${{ github.ref_name }} (package version ${{ steps.get_version.outputs.version }})"
          draft: false
          prerelease: false

      - name: Upload .nupkg to Release
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: ${{ steps.get_version.outputs.package_file }}
          asset_name: ${{ steps.get_version.outputs.package_basename }}
          asset_content_type: application/octet-stream