name: Auto Release on Push to Main

on:
  push:
    branches:
      - main
    paths-ignore:
      - '**.md'
      - 'docs/**'
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  auto-release:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        fetch-depth: 0
        token: ${{ secrets.GITHUB_TOKEN }}

    - name: Get latest tag
      id: get_latest_tag
      run: |
        # 获取最新的版本标签
        LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "v0.0.0")
        echo "Latest tag: $LATEST_TAG"
        echo "latest_tag=$LATEST_TAG" >> $GITHUB_OUTPUT
        
        # 提取版本号部分（去掉 v 前缀）
        VERSION=${LATEST_TAG#v}
        echo "version=$VERSION" >> $GITHUB_OUTPUT

    - name: Calculate next version
      id: next_version
      run: |
        VERSION="${{ steps.get_latest_tag.outputs.version }}"
        
        # 分割版本号为 major.minor.patch
        IFS='.' read -r -a version_parts <<< "$VERSION"
        MAJOR="${version_parts[0]:-0}"
        MINOR="${version_parts[1]:-0}"
        PATCH="${version_parts[2]:-0}"
        
        # 递增 patch 版本号
        NEW_PATCH=$((PATCH + 1))
        NEW_VERSION="${MAJOR}.${MINOR}.${NEW_PATCH}"
        NEW_TAG="v${NEW_VERSION}"
        
        echo "New version: $NEW_VERSION"
        echo "New tag: $NEW_TAG"
        echo "new_version=$NEW_VERSION" >> $GITHUB_OUTPUT
        echo "new_tag=$NEW_TAG" >> $GITHUB_OUTPUT

    - name: Generate changelog
      id: changelog
      uses: orhun/git-cliff-action@v3
      with:
        config: .github/cliff.toml
        args: --unreleased --strip header

    - name: Check if there are changes to release
      id: check_changes
      run: |
        # 检查自上次标签以来是否有新的提交
        LATEST_TAG="${{ steps.get_latest_tag.outputs.latest_tag }}"
        if [ "$LATEST_TAG" = "v0.0.0" ]; then
          echo "has_changes=true" >> $GITHUB_OUTPUT
        else
          CHANGES=$(git rev-list $LATEST_TAG..HEAD --count)
          if [ "$CHANGES" -gt 0 ]; then
            echo "has_changes=true" >> $GITHUB_OUTPUT
          else
            echo "has_changes=false" >> $GITHUB_OUTPUT
          fi
        fi

    - name: Create and push tag
      if: steps.check_changes.outputs.has_changes == 'true'
      run: |
        NEW_TAG="${{ steps.next_version.outputs.new_tag }}"
        git config user.name "github-actions[bot]"
        git config user.email "github-actions[bot]@users.noreply.github.com"
        git tag -a "$NEW_TAG" -m "Release $NEW_TAG"
        git push origin "$NEW_TAG"

    - name: Create Release
      if: steps.check_changes.outputs.has_changes == 'true'
      uses: softprops/action-gh-release@v1
      with:
        tag_name: ${{ steps.next_version.outputs.new_tag }}
        name: Release ${{ steps.next_version.outputs.new_version }}
        body: |
          ## 🐳 Docker 镜像
          
          ```bash
          docker pull ${{ secrets.DOCKERHUB_USERNAME || 'weishaw' }}/claude-relay-service:${{ steps.next_version.outputs.new_tag }}
          docker pull ${{ secrets.DOCKERHUB_USERNAME || 'weishaw' }}/claude-relay-service:latest
          ```
          
          ## 📦 主要更新
          
          ${{ steps.changelog.outputs.content }}
          
          ## 📋 完整更新日志
          
          查看 [CHANGELOG.md](https://github.com/${{ github.repository }}/blob/main/CHANGELOG.md)
          
          ---
          *此版本由 GitHub Actions 自动发布*
        draft: false
        prerelease: false
        generate_release_notes: true

    - name: Update CHANGELOG.md
      if: steps.check_changes.outputs.has_changes == 'true'
      run: |
        # 生成完整的 CHANGELOG
        git cliff --config .github/cliff.toml --output CHANGELOG.md
        
        # 提交 CHANGELOG 更新
        if git diff --quiet CHANGELOG.md; then
          echo "No changes to CHANGELOG.md"
        else
          git add CHANGELOG.md
          git commit -m "chore: update CHANGELOG.md for ${{ steps.next_version.outputs.new_tag }} [skip ci]"
          git push origin main
        fi