name: renovate

on:
  workflow_dispatch:
  schedule:
    - cron: "@hourly"
  push:

jobs:
  discover-repos:
    name: Discover Repositories
    runs-on: ubuntu-latest
    outputs:
      repo-batches: ${{ steps.create-batches.outputs.batches }}
    
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Setup Renovate
        uses: renovatebot/github-action@v39.221.0
        with:
          configurationFile: config.js
          token: ${{ secrets.RENOVATE_TOKEN }}
      
      - name: Discover Repositories
        run: |
          renovate --write-discovered-repos=renovate-repos.json
        env:
          RENOVATE_CONFIG_FILE: "config.js"
          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
          GITHUB_COM_TOKEN: ${{ secrets.GH_TOKEN }}
          LOG_LEVEL: "info"
          RENOVATE_AUTODISCOVER: "true"
      
      - name: Create Repository Batches
        id: create-batches
        shell: bash
        run: |
          if [ ! -f renovate-repos.json ] || [ ! -s renovate-repos.json ]; then
            echo "No repositories discovered or file not created"
            echo "batches=[]" >> $GITHUB_OUTPUT
            exit 0
          fi
          
          # Read repositories and create batches of 5
          REPOS=$(cat renovate-repos.json)
          
          # Use Python (available in GitHub Actions runner) for JSON processing
          BATCHES=$(python3 -c '
          import json
          import sys
          
          try:
              data = json.loads(sys.argv[1])
              if not isinstance(data, list):
                  print("[]")
                  sys.exit(0)
              
              # Create batches of 5
              batches = []
              for i in range(0, len(data), 5):
                  batches.append(data[i:i+5])
              
              print(json.dumps(batches))
          except Exception as e:
              print(f"Error: {e}", file=sys.stderr)
              print("[]")
          ' "$REPOS")
          
          echo "Created batches: $BATCHES"
          echo "batches=$BATCHES" >> $GITHUB_OUTPUT

  renovate:
    name: Run Renovate
    needs: discover-repos
    runs-on: ubuntu-latest
    if: ${{ needs.discover-repos.outputs.repo-batches != '[]' }}
    strategy:
      matrix:
        batch: ${{ fromJson(needs.discover-repos.outputs.repo-batches) }}
      fail-fast: false
      max-parallel: 5
    
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Setup Renovate
        uses: renovatebot/github-action@v39.221.0
        with:
          configurationFile: config.js
          token: ${{ secrets.RENOVATE_TOKEN }}
      
      - name: Cache Renovate dependencies
        uses: actions/cache@v4
        with:
          path: /tmp/renovate-cache
          key: ${{ runner.os }}-renovate-batch-${{ github.run_id }}
          restore-keys: |
            ${{ runner.os }}-renovate-
      
      - name: Run Renovate on Batch
        shell: bash
        run: |
          # Simple approach to create comma-separated list
          REPOS=""
          # Make sure batch is not empty
          if [ -n "$BATCH" ] && [ "$BATCH" != "null" ]; then
            # Convert JSON array to comma-separated string
            REPOS=$(python3 -c '
            import json
            import sys
            
            try:
                batch = json.loads(sys.argv[1])
                if isinstance(batch, list) and batch:
                    print(",".join(batch))
            except Exception as e:
                print(f"Error: {e}", file=sys.stderr)
            ' "$BATCH")
          fi
          
          if [ -n "$REPOS" ]; then
            echo "Processing repositories: $REPOS"
            renovate $REPOS
          else
            echo "No repositories to process in this batch"
          fi
        env:
          BATCH: ${{ toJson(matrix.batch) }}
          RENOVATE_CONFIG_FILE: "config.js"
          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
          GITHUB_COM_TOKEN: ${{ secrets.GH_TOKEN }}
          LOG_LEVEL: "info"
          RENOVATE_CACHE_DIR: /tmp/renovate-cache

  renovate-default:
    name: Run Renovate (Default)
    needs: discover-repos
    runs-on: ubuntu-latest
    if: ${{ needs.discover-repos.outputs.repo-batches == '[]' }}
    
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Setup Renovate
        uses: renovatebot/github-action@v39.221.0
        with:
          configurationFile: config.js
          token: ${{ secrets.RENOVATE_TOKEN }}
      
      - name: Cache Renovate dependencies
        uses: actions/cache@v4
        with:
          path: /tmp/renovate-cache
          key: ${{ runner.os }}-renovate-default-${{ hashFiles('config.js') }}-${{ github.run_id }}
          restore-keys: |
            ${{ runner.os }}-renovate-default-${{ hashFiles('config.js') }}-
            ${{ runner.os }}-renovate-default-
      
      - name: Run Renovate
        run: renovate
        env:
          RENOVATE_CONFIG_FILE: "config.js"
          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
          GITHUB_COM_TOKEN: ${{ secrets.GH_TOKEN }}
          LOG_LEVEL: "info"
          RENOVATE_CACHE_DIR: /tmp/renovate-cache