generate-changelog.yml

name: Generate Data Changelogs

on:
  push:
    branches:
      - master
    paths:
      - 'contributions/**'
      - 'bin/scripts/changelog/**'
      - '.github/workflows/generate-changelog.yml'
  workflow_dispatch:
    inputs:
      retention_months:
        description: 'Retention period in months'
        required: false
        default: '48'
      full_history:
        description: 'Process full git history'
        type: boolean
        default: true
      target_repo:
        description: 'Target repository (owner/repo)'
        required: false
        default: 'dr5hn/csc-changelog'

env:
  TARGET_REPO: ${{ github.event.inputs.target_repo || 'dr5hn/csc-changelog' }}
  TARGET_BRANCH: 'main'

jobs:
  generate-changelogs:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Full git history needed

      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'
          cache: 'pip'

      - name: Install Python dependencies
        run: |
          pip install --upgrade pip
          pip install -r bin/scripts/changelog/requirements-changelog.txt

      - name: Validate repository
        run: |
          echo "Repository: $(pwd)"
          echo "Git status:"
          git status
          echo ""
          echo "Checking contributions/ directory:"
          ls -lh contributions/
          echo ""
          echo "Recent commits to contributions/:"
          git log --oneline -10 -- contributions/ || echo "No commits found"

      - name: Generate changelogs
        run: |
          echo "================================================"
          echo "Starting Changelog Generation"
          echo "================================================"

          RETENTION_MONTHS="${{ github.event.inputs.retention_months || '24' }}"

          python3 bin/scripts/changelog/changelog_generator.py \
            --retention-months ${RETENTION_MONTHS} \
            --show-sizes

          echo ""
          echo "================================================"
          echo "Generation Complete"
          echo "================================================"

      - name: Check generated files
        run: |
          echo "Changelog directory structure:"
          tree -L 2 changelogs/ || ls -R changelogs/
          echo ""
          echo "File sizes:"
          du -sh changelogs/
          du -sh changelogs/countries/ 2>/dev/null || echo "No countries directory"
          du -sh changelogs/archives/ 2>/dev/null || echo "No archives directory"

      - name: Clone target repository
        run: |
          echo "Cloning target repository: $TARGET_REPO"
          cd ..
          git clone https://x-access-token:${{ secrets.CHANGELOG_REPO_TOKEN }}@github.com/$TARGET_REPO.git changelog-repo
          cd changelog-repo

          # Configure git
          git config user.name "Changelog Bot"
          git config user.email "bot@changelog.countrystatecity.in"

          # Create new branch for this update
          BRANCH_NAME="update-changelog-$(date -u '+%Y%m%d-%H%M%S')"
          git checkout -b $BRANCH_NAME
          echo "BRANCH_NAME=$BRANCH_NAME" >> $GITHUB_ENV

      - name: Copy changelogs to target repo
        run: |
          echo "Copying generated changelogs to target repository..."
          cp -r changelogs/* ../changelog-repo/

          echo ""
          echo "Files copied to target repo:"
          ls -lh ../changelog-repo/

      - name: Commit and push to target repo
        run: |
          cd ../changelog-repo

          git add .

          if git diff --staged --quiet; then
            echo "No changes to commit"
            echo "HAS_CHANGES=false" >> $GITHUB_ENV
          else
            COMMIT_MSG="📝 Update changelogs - $(date -u '+%Y-%m-%d %H:%M:%S UTC')"
            COMMIT_MSG="${COMMIT_MSG}\n\nAuto-generated from: ${{ github.repository }}@${{ github.sha }}"
            COMMIT_MSG="${COMMIT_MSG}\nTriggered by: ${{ github.event_name }}"
            git commit -m "${COMMIT_MSG}"

            git push origin $BRANCH_NAME
            echo "HAS_CHANGES=true" >> $GITHUB_ENV
          fi

      - name: Create Pull Request in target repo
        if: env.HAS_CHANGES == 'true'
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.CHANGELOG_REPO_TOKEN }}
          script: |
            const [owner, repo] = process.env.TARGET_REPO.split('/');

            const prBody = [
              '## Automated Changelog Update',
              '',
              `🤖 Auto-generated from [\`${context.repo.owner}/${context.repo.repo}\`](https://github.com/${context.repo.owner}/${context.repo.repo})`,
              '',
              '### Source',
              `- Commit: ${context.sha.substring(0, 7)}`,
              `- Trigger: ${context.eventName}`,
              `- Message: ${context.payload.head_commit?.message || 'Manual workflow dispatch'}`,
              '',
              '### Changes',
              'This PR contains updated changelog data from the latest database changes.',
              '',
              '### Review Checklist',
              '- [ ] Verify changelog file sizes are reasonable',
              '- [ ] Check that statistics are updated',
              '- [ ] Confirm website will display correctly',
              '',
              '---',
              '',
              '*To merge automatically, approve this PR or configure auto-merge.*'
            ].join('\n');

            const { data: pr } = await github.rest.pulls.create({
              owner,
              repo,
              title: '📝 Update changelogs - ' + new Date().toISOString().split('T')[0],
              head: process.env.BRANCH_NAME,
              base: process.env.TARGET_BRANCH,
              body: prBody
            });

            console.log(`Pull request created: ${pr.html_url}`);
            core.setOutput('pr_url', pr.html_url);
            core.setOutput('pr_number', pr.number);

      - name: Summary
        run: |
          echo "================================================"
          echo "Changelog Generation Summary"
          echo "================================================"
          echo "✅ Changelogs generated successfully"
          if [ "$HAS_CHANGES" = "true" ]; then
            echo "✅ Pull request created in $TARGET_REPO"
            echo "📍 Branch: $BRANCH_NAME"
          else
            echo "ℹ️  No changes detected"
          fi
          echo ""
          echo "Target repository: $TARGET_REPO"
          echo "================================================"