name: 'Auto-translate Documentation'

on:
  schedule:
    # Run every Sunday at midnight UTC
    - cron: '0 0 * * 0'
  workflow_dispatch: # Allow manual triggers

permissions:
  contents: write
  pull-requests: write

jobs:
  translate:
    runs-on: blacksmith-4vcpu-ubuntu-2404
    if: github.actor != 'github-actions[bot]' # Prevent infinite loops
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: staging
          token: ${{ secrets.GH_PAT }}
          fetch-depth: 0

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: 1.3.3

      - name: Cache Bun dependencies
        uses: actions/cache@v4
        with:
          path: |
            ~/.bun/install/cache
            node_modules
            **/node_modules
          key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lock') }}
          restore-keys: |
            ${{ runner.os }}-bun-

      - name: Run Lingo.dev translations
        env:
          LINGODOTDEV_API_KEY: ${{ secrets.LINGODOTDEV_API_KEY }}
        run: |
          cd apps/docs
          bunx lingo.dev@latest i18n
      
      - name: Check for translation changes
        id: changes
        run: |
          cd apps/docs
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"
          
          if [ -n "$(git status --porcelain content/docs)" ]; then
            echo "changes=true" >> $GITHUB_OUTPUT
          else
            echo "changes=false" >> $GITHUB_OUTPUT
          fi
      
      - name: Create Pull Request with translations
        if: steps.changes.outputs.changes == 'true'
        uses: peter-evans/create-pull-request@v5
        with:
          token: ${{ secrets.GH_PAT }}
          commit-message: "feat(i18n): update translations"
          title: "feat(i18n): update translations"
          body: |
            ## Summary
            Automated weekly translation updates for documentation.

            This PR was automatically created by the scheduled weekly i18n workflow, updating translations for all supported languages using Lingo.dev AI translation engine.

            **Triggered**: Weekly scheduled run
            **Workflow**: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
            
            ## Type of Change
            - [ ] Bug fix
            - [ ] New feature  
            - [ ] Breaking change
            - [x] Documentation
            - [ ] Other: ___________
            
            ## Testing
            This PR includes automated translations for modified English documentation content:
            - 🇪🇸 Spanish (es) translations
            - 🇫🇷 French (fr) translations
            - 🇨🇳 Chinese (zh) translations
            - 🇯🇵 Japanese (ja) translations
            - 🇩🇪 German (de) translations
            
            **What reviewers should focus on:**
            - Verify translated content accuracy and context
            - Check that all links and references work correctly in translated versions
            - Ensure formatting, code blocks, and structure are preserved
            - Validate that technical terms are appropriately translated
            
            ## Checklist
            - [x] Code follows project style guidelines (automated translation)
            - [x] Self-reviewed my changes (automated process)
            - [ ] Tests added/updated and passing
            - [x] No new warnings introduced
            - [x] I confirm that I have read and agree to the terms outlined in the [Contributor License Agreement (CLA)](./CONTRIBUTING.md#contributor-license-agreement-cla)
            
            ## Screenshots/Videos
            <!-- Translation changes are text-based - no visual changes expected -->
            <!-- Reviewers should check the documentation site renders correctly for all languages -->
          branch: auto-translate/weekly-${{ github.run_id }}
          base: staging
          labels: |
            i18n

  verify-translations:
    needs: translate
    runs-on: blacksmith-4vcpu-ubuntu-2404
    if: always() # Run even if translation fails
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: staging

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: 1.3.3

      - name: Cache Bun dependencies
        uses: actions/cache@v4
        with:
          path: |
            ~/.bun/install/cache
            node_modules
            **/node_modules
          key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lock') }}
          restore-keys: |
            ${{ runner.os }}-bun-

      - name: Install dependencies
        run: |
          cd apps/docs
          bun install --frozen-lockfile

      - name: Build documentation to verify translations
        env:
          DATABASE_URL: postgresql://dummy:dummy@localhost:5432/dummy
        run: |
          cd apps/docs
          bun run build

      - name: Report translation status
        run: |
          cd apps/docs
          echo "## Translation Status Report" >> $GITHUB_STEP_SUMMARY
          echo "**Weekly scheduled translation run**" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          
          en_count=$(find content/docs/en -name "*.mdx" | wc -l)
          es_count=$(find content/docs/es -name "*.mdx" 2>/dev/null | wc -l || echo 0)
          fr_count=$(find content/docs/fr -name "*.mdx" 2>/dev/null | wc -l || echo 0)
          zh_count=$(find content/docs/zh -name "*.mdx" 2>/dev/null | wc -l || echo 0)
          ja_count=$(find content/docs/ja -name "*.mdx" 2>/dev/null | wc -l || echo 0)
          de_count=$(find content/docs/de -name "*.mdx" 2>/dev/null | wc -l || echo 0)
          
          es_percentage=$((es_count * 100 / en_count))
          fr_percentage=$((fr_count * 100 / en_count))
          zh_percentage=$((zh_count * 100 / en_count))
          ja_percentage=$((ja_count * 100 / en_count))
          de_percentage=$((de_count * 100 / en_count))
          
          echo "### Coverage Statistics" >> $GITHUB_STEP_SUMMARY
          echo "- **🇬🇧 English**: $en_count files (source)" >> $GITHUB_STEP_SUMMARY
          echo "- **🇪🇸 Spanish**: $es_count/$en_count files ($es_percentage%)" >> $GITHUB_STEP_SUMMARY
          echo "- **🇫🇷 French**: $fr_count/$en_count files ($fr_percentage%)" >> $GITHUB_STEP_SUMMARY
          echo "- **🇨🇳 Chinese**: $zh_count/$en_count files ($zh_percentage%)" >> $GITHUB_STEP_SUMMARY
          echo "- **🇯🇵 Japanese**: $ja_count/$en_count files ($ja_percentage%)" >> $GITHUB_STEP_SUMMARY
          echo "- **🇩🇪 German**: $de_count/$en_count files ($de_percentage%)" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "🔄 **Auto-translation PR**: Check for new pull request with updated translations" >> $GITHUB_STEP_SUMMARY