# GitHub Actions 工作流
# 检测到 sync-* 标签时自动推送代码到 main 分支

name: Auto Push on Tag

on:
  push:
    tags:
      - 'sync-*'

# 授予写入权限
permissions:
  contents: write

jobs:
  push-code:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Get tag info
        id: tag_info
        run: |
          TAG_NAME=${GITHUB_REF#refs/tags/}
          COMMIT_SHA=$(git rev-list -n 1 $TAG_NAME)
          echo "tag_name=$TAG_NAME" >> $GITHUB_OUTPUT
          echo "commit_sha=$COMMIT_SHA" >> $GITHUB_OUTPUT
          echo "🏷️ Tag: $TAG_NAME"
          echo "📝 Commit: $COMMIT_SHA"
      
      - name: Push commit to main
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          
          # 获取标签指向的 commit
          TAG_COMMIT=${{ steps.tag_info.outputs.commit_sha }}
          
          # 切换到 main 分支
          git checkout main
          
          # 检查 main 是否已经包含这个 commit
          if git merge-base --is-ancestor $TAG_COMMIT HEAD; then
            echo "✓ main 分支已包含此 commit，无需推送"
          else
            # 将 commit 合并到 main
            git merge $TAG_COMMIT --no-edit
            git push origin main
            echo "✓ 已推送到 main 分支"
          fi
      
      - name: Summary
        run: |
          echo "## 同步完成 ✅" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "- **标签**: ${{ steps.tag_info.outputs.tag_name }}" >> $GITHUB_STEP_SUMMARY
          echo "- **Commit**: ${{ steps.tag_info.outputs.commit_sha }}" >> $GITHUB_STEP_SUMMARY
          echo "- **时间**: $(date)" >> $GITHUB_STEP_SUMMARY