name: Auto Release on Version Update

on:
  workflow_dispatch:
  push:
    branches:
      - main
    paths:
      - 'metadata.yaml'

jobs:
  check-version:
    runs-on: ubuntu-latest
    outputs:
      version_changed: ${{ steps.check.outputs.changed }}
      new_version: ${{ steps.check.outputs.version }}
      old_version: ${{ steps.check.outputs.old_version }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - name: Check version change
        id: check
        run: |
          # 获取当前版本
          CURRENT_VERSION=$(grep '^version:' metadata.yaml | awk '{print $2}')
          echo "Current version: $CURRENT_VERSION"
          
          # 获取上一次提交的版本
          git checkout HEAD~1 -- metadata.yaml 2>/dev/null || echo "First commit"
          if [ -f metadata.yaml ]; then
            PREVIOUS_VERSION=$(grep '^version:' metadata.yaml | awk '{print $2}')
            git checkout HEAD -- metadata.yaml
          else
            PREVIOUS_VERSION="none"
          fi
          echo "Previous version: $PREVIOUS_VERSION"
          
          # 比较版本
          if [ "$CURRENT_VERSION" != "$PREVIOUS_VERSION" ]; then
            echo "changed=true" >> $GITHUB_OUTPUT
            echo "version=$CURRENT_VERSION" >> $GITHUB_OUTPUT
            echo "old_version=$PREVIOUS_VERSION" >> $GITHUB_OUTPUT
            echo "Version changed from $PREVIOUS_VERSION to $CURRENT_VERSION"
          else
            echo "changed=false" >> $GITHUB_OUTPUT
            echo "No version change detected"
          fi

  create-release:
    needs: check-version
    if: needs.check-version.outputs.version_changed == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Generate changelog
        id: changelog
        run: |
          NEW_VERSION="${{ needs.check-version.outputs.new_version }}"
          OLD_VERSION="${{ needs.check-version.outputs.old_version }}"
          
          echo "## 🎉 Release $NEW_VERSION" > changelog.md
          echo "" >> changelog.md
          
          # 如果有上一个版本标签，生成两个版本之间的提交日志
          if git rev-parse "$OLD_VERSION" >/dev/null 2>&1; then
            echo "### 📝 Changes since $OLD_VERSION" >> changelog.md
            echo "" >> changelog.md
            
            # 获取提交信息并分类
            git log "$OLD_VERSION..HEAD" --pretty=format:"%s|||%h|||%an" --no-merges | while IFS='|||' read -r subject hash author; do
              # 根据提交信息的前缀进行分类
              if echo "$subject" | grep -qiE "^(feat|feature):"; then
                echo "- ✨ **Feature**: ${subject#*: } (${hash})" >> changelog.md
              elif echo "$subject" | grep -qiE "^fix:"; then
                echo "- 🐛 **Fix**: ${subject#*: } (${hash})" >> changelog.md
              elif echo "$subject" | grep -qiE "^docs:"; then
                echo "- 📚 **Docs**: ${subject#*: } (${hash})" >> changelog.md
              elif echo "$subject" | grep -qiE "^(refactor|style|perf|test|chore):"; then
                prefix=$(echo "$subject" | cut -d: -f1)
                echo "- 🔧 **${prefix^}**: ${subject#*: } (${hash})" >> changelog.md
              else
                echo "- 📌 $subject (${hash})" >> changelog.md
              fi
            done
          else
            echo "### 📝 Changes" >> changelog.md
            echo "" >> changelog.md
            echo "Initial release or no previous version tag found." >> changelog.md
            echo "" >> changelog.md
            echo "#### Recent commits:" >> changelog.md
            git log -10 --pretty=format:"- %s (%h)" --no-merges >> changelog.md
          fi
          
          echo "" >> changelog.md
          echo "---" >> changelog.md
          echo "**Full Changelog**: https://github.com/${{ github.repository }}/compare/$OLD_VERSION...$NEW_VERSION" >> changelog.md

      - name: Create Release
        uses: softprops/action-gh-release@v1
        with:
          tag_name: ${{ needs.check-version.outputs.new_version }}
          name: Release ${{ needs.check-version.outputs.new_version }}
          body_path: changelog.md
          draft: false
          prerelease: false
          generate_release_notes: false
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Notify release created
        run: |
          echo "✅ Release ${{ needs.check-version.outputs.new_version }} has been created successfully!"
          echo "🔗 View release at: https://github.com/${{ github.repository }}/releases/tag/${{ needs.check-version.outputs.new_version }}"