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: Get current commit hash
        id: get_commit
        run: |
          COMMIT_SHORT=$(echo "${{ github.sha }}" | cut -c1-7)
          echo "COMMIT_SHORT=$COMMIT_SHORT" >> $GITHUB_OUTPUT

      - name: Generate release notes
        id: release_notes
        run: |
          VERSION="${{ needs.check-version.outputs.new_version }}"
          OLD_VERSION="${{ needs.check-version.outputs.old_version }}"
          
          # 1. 尝试提取 CHANGELOG.md
          if [ -f "CHANGELOG.md" ]; then
            awk -v ver="$VERSION" '
              /^## \[?v?/ && index($0, ver) { flag=1 }
              /^## \[?v?/ && !index($0, ver) { flag=0 }
              flag
            ' CHANGELOG.md > release_notes.md
          fi
          
          # 确保 release_notes.md 存在
          touch release_notes.md
          
          # 2. 生成提交列表
          echo "" >> release_notes.md
          echo "### 🔍 Commits" >> release_notes.md
          
          process_log() {
            local range="$1"
            git log --pretty=format:"%s|%h|%H" "$range" > commits.txt
            
            # Helper to extract categories
            print_category() {
                local marker="$1"
                local title="$2"
                local pattern="$3"
                local commits=$(grep -iE "$pattern" commits.txt)
                if [ ! -z "$commits" ]; then
                    echo "#### $marker $title" >> release_notes.md
                    echo "$commits" | while IFS='|' read -r msg hash full_hash; do
                        echo "- $msg ([$hash](https://github.com/${{ github.repository }}/commit/$full_hash))" >> release_notes.md
                    done
                    echo "" >> release_notes.md
                fi
            }
            
            print_category "✨" "Features" "^(feat|feature)(\(.*\))?:"
            print_category "🐛" "Fixes" "^fix(\(.*\))?:"
            print_category "📚" "Documentation" "^docs(\(.*\))?:"
            print_category "💄" "Style & Refactor" "^(style|refactor|perf)(\(.*\))?:"
            print_category "🔧" "Chore & Test" "^(chore|test|ci|build)(\(.*\))?:"
            
            # Other changes (inverse grep)
            local others=$(grep -ivE "^(feat|feature|fix|docs|style|refactor|perf|chore|test|ci|build)(\(.*\))?:" commits.txt)
            if [ ! -z "$others" ]; then
                echo "#### 📌 Other Changes" >> release_notes.md
                echo "$others" | while IFS='|' read -r msg hash full_hash; do
                    echo "- $msg ([$hash](https://github.com/${{ github.repository }}/commit/$full_hash))" >> release_notes.md
                done
            fi
            
            rm commits.txt
          }
          
          if [ "$OLD_VERSION" != "none" ] && git rev-parse "$OLD_VERSION" >/dev/null 2>&1; then
             process_log "$OLD_VERSION..HEAD"
             
             echo "" >> release_notes.md
             echo "**Full Changelog**: https://github.com/${{ github.repository }}/compare/$OLD_VERSION...${{ github.ref_name }}" >> release_notes.md
          else
             echo "Initial release or previous version tag not found." >> release_notes.md
             echo "#### 🆕 Initial Commits" >> release_notes.md
             git log -10 --pretty=format:"- %s ([%h](https://github.com/${{ github.repository }}/commit/%H))" >> release_notes.md
          fi
          
          cat release_notes.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: release_notes.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 }}"