# GitHub Actions Workflow for Plugin Version Change Detection
# 插件版本变化检测工作流
#
# This workflow detects version changes in plugins when PRs are created or updated.
# 此工作流在创建或更新 PR 时检测插件的版本变化。
#
# What it does:
# 1. Compares plugin versions between base and head branches
# 2. Generates a summary of version changes
# 3. Comments on the PR with the changes (optional)

name: Plugin Version Check / 插件版本检查

on:
  pull_request:
    branches:
      - main
    paths:
      - 'plugins/**/*.py'

permissions:
  contents: read
  pull-requests: write

jobs:
  check-versions:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout PR head
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          path: head

      - name: Checkout base branch
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.base.sha }}
          path: base

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Extract and compare versions
        id: compare
        run: |
          # Extract base versions
          cd base
          if [ -f scripts/extract_plugin_versions.py ]; then
            python scripts/extract_plugin_versions.py --json --output ../base_versions.json
          else
            # Fallback if script doesn't exist in base
            echo "[]" > ../base_versions.json
          fi
          cd ..
          
          # Extract head versions
          cd head
          python scripts/extract_plugin_versions.py --json --output ../head_versions.json
          
          # Compare versions
          python scripts/extract_plugin_versions.py --compare ../base_versions.json --output ../changes.md
          cd ..
          
          echo "=== Version Changes ==="
          cat changes.md
          
          # Check if there are any changes
          if grep -q "No changes detected" changes.md; then
            echo "has_changes=false" >> $GITHUB_OUTPUT
          else
            echo "has_changes=true" >> $GITHUB_OUTPUT
          fi
          
          # Store changes for comment
          {
            echo 'changes<<EOF'
            cat changes.md
            echo 'EOF'
          } >> $GITHUB_OUTPUT

      - name: Comment on PR
        if: steps.compare.outputs.has_changes == 'true'
        uses: actions/github-script@v7
        with:
          script: |
            const changes = `${{ steps.compare.outputs.changes }}`;
            
            const body = `## 🔍 Plugin Version Changes / 插件版本变化
            
            ${changes}
            
            ---
            *This comment was generated automatically. / 此评论由自动生成。*
            `;
            
            // Find existing comment from github-actions bot
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });
            
            const botComment = comments.find(comment => 
              (comment.user.login === 'github-actions[bot]' || comment.user.type === 'Bot') && 
              comment.body.includes('Plugin Version Changes')
            );
            
            if (botComment) {
              // Update existing comment
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: body,
              });
            } else {
              // Create new comment
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: body,
              });
            }

      - name: Summary
        run: |
          echo "## 🔍 Plugin Version Check Results" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          
          if [ "${{ steps.compare.outputs.has_changes }}" = "true" ]; then
            echo "✅ **Version changes detected!**" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            cat changes.md >> $GITHUB_STEP_SUMMARY
          else
            echo "ℹ️ **No version changes detected.**" >> $GITHUB_STEP_SUMMARY
          fi