name: Check Vendor Updates

on:
  schedule:
    # Run daily at 2 AM UTC
    - cron: '0 2 * * *'
  workflow_dispatch:
    # Allow manual triggering

jobs:
  check-vendor:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'
          cache: 'pip'
      
      - name: Install dependencies
        run: |
          cd scripts
          pip install -r requirements.txt
      
      - name: Generate manifest from site data
        run: |
          python scripts/vendor_update.py --scan-only
      
      - name: Check for updates
        id: check-updates
        env:
          GITHUB_API_TOKEN: ${{ secrets.GITHUB_API_TOKEN }}
        run: |
          python scripts/check_updates.py \
            --manifest manifest/vendor_manifest.json \
            --output report.json || true
        continue-on-error: true
      
      - name: Read update report
        id: read-report
        if: always()
        run: |
          if [ -f report.json ]; then
            OUT_OF_DATE=$(python -c "import json; r=json.load(open('report.json')); print(r.get('out_of_date', 0))")
            echo "out_of_date=$OUT_OF_DATE" >> $GITHUB_OUTPUT
            echo "has_updates=$([ $OUT_OF_DATE -gt 0 ] && echo 'true' || echo 'false')" >> $GITHUB_OUTPUT
          else
            echo "out_of_date=0" >> $GITHUB_OUTPUT
            echo "has_updates=false" >> $GITHUB_OUTPUT
          fi
      
      - name: Get out-of-date entry IDs
        id: get-entries
        if: steps.read-report.outputs.has_updates == 'true'
        run: |
          python -c "
          import json
          with open('report.json') as f:
              report = json.load(f)
          entries = [e['id'] for e in report['entries'] if e.get('status') == 'out-of-date']
          entry_ids = ','.join(entries)
          print(f'entry_ids={entry_ids}')
          " >> $GITHUB_OUTPUT || echo "entry_ids=" >> $GITHUB_OUTPUT
      
      - name: Create update branch
        if: steps.read-report.outputs.has_updates == 'true'
        run: |
          TIMESTAMP=$(date +%Y%m%d-%H%M%S)
          ENTRY_IDS=$(echo "${{ steps.get-entries.outputs.entry_ids }}" | tr ',' '-' | cut -c1-50)
          BRANCH_NAME="vendor-update/${TIMESTAMP}-${ENTRY_IDS}"
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git checkout -b "$BRANCH_NAME"
          echo "BRANCH_NAME=$BRANCH_NAME" >> $GITHUB_ENV
      
      - name: Update vendored files
        if: steps.read-report.outputs.has_updates == 'true'
        env:
          GITHUB_API_TOKEN: ${{ secrets.GITHUB_API_TOKEN }}
        run: |
          ENTRY_IDS="${{ steps.get-entries.outputs.entry_ids }}"
          for entry_id in $(echo "$ENTRY_IDS" | tr ',' ' '); do
            echo "Updating entry: $entry_id"
            python scripts/vendor_update.py \
              --manifest manifest/vendor_manifest.json \
              --entry "$entry_id" \
              --sync-site
          done
      
      - name: Run site build (if available)
        if: steps.read-report.outputs.has_updates == 'true'
        run: |
          if [ -f website/package.json ]; then
            cd website
            npm ci || npm install
            npm run build || echo "Build failed but continuing..."
          else
            echo "No website build step found, skipping..."
          fi
      
      - name: Commit and push changes
        if: steps.read-report.outputs.has_updates == 'true'
        run: |
          git add manifest/vendor_manifest.json vendor/ website/src/data/components/
          if git diff --staged --quiet; then
            echo "No changes to commit"
            exit 0
          fi
          
          git commit -m "chore: update vendored files
          
          Updated $(echo "${{ steps.get-entries.outputs.entry_ids }}" | tr ',' ' ' | wc -w) vendored file(s):
          $(echo "${{ steps.get-entries.outputs.entry_ids }}" | tr ',' '\n' | sed 's/^/  - /')
          
          Auto-generated by check-vendor workflow"
          
          git push origin "$BRANCH_NAME"
      
      - name: Create Pull Request
        if: steps.read-report.outputs.has_updates == 'true'
        uses: peter-evans/create-pull-request@v5
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          branch: ${{ env.BRANCH_NAME }}
          title: "chore: Update vendored files"
          body: |
            ## Vendor Update
            
            This PR updates vendored files that have changed upstream.
            
            **Updated entries:**
            ${{ steps.get-entries.outputs.entry_ids }}
            
            **Report:**
            - Total entries checked: ${{ steps.read-report.outputs.out_of_date }}
            - Out-of-date entries: ${{ steps.read-report.outputs.out_of_date }}
            
            ### Changes
            - Updated manifest with new commit SHAs
            - Downloaded latest versions of changed files
            - Synced vendor metadata to site component JSON files
            
            ### Verification
            - [ ] Manifest updated correctly
            - [ ] Files downloaded and checksums verified
            - [ ] Site JSON files updated with vendor metadata
            - [ ] Site build passes (if applicable)
            
            ---
            *This PR was automatically created by the check-vendor workflow.*
          labels: |
            automated
            vendor-update
          draft: false
      
      - name: Summary
        if: always()
        run: |
          if [ "${{ steps.read-report.outputs.has_updates }}" == "true" ]; then
            echo "## ✅ Updates Available" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "Found ${{ steps.read-report.outputs.out_of_date }} out-of-date entries." >> $GITHUB_STEP_SUMMARY
            echo "Created PR: vendor-update/${{ env.BRANCH_NAME }}" >> $GITHUB_STEP_SUMMARY
          else
            echo "## ✅ All Up-to-Date" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "All vendored files are up-to-date with upstream." >> $GITHUB_STEP_SUMMARY
          fi