auto-pr.yml

name: Auto Create Pull Requests

on:
  push:
    branches: [dev]
  schedule:
    # Run daily at 9 AM UTC to check for differences
    - cron: "0 9 * * *"
  workflow_dispatch: # Allow manual trigger

permissions:
  contents: read
  pull-requests: write
  issues: write

jobs:
  auto-pr-dev-to-main:
    if: github.ref == 'refs/heads/dev' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Configure git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Check if main branch exists
        id: check-main
        run: |
          if git show-ref --verify --quiet refs/remotes/origin/main; then
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
            echo "ERROR: main branch does not exist!"
            exit 1
          fi

      - name: Check for differences between dev and main
        id: check-diff
        run: |
          git fetch origin main
          if git diff --quiet origin/dev origin/main; then
            echo "has-changes=false" >> $GITHUB_OUTPUT
          else
            echo "has-changes=true" >> $GITHUB_OUTPUT
          fi

      - name: Check if PR already exists
        id: check-pr
        if: steps.check-diff.outputs.has-changes == 'true'
        run: |
          PR_NUMBER=$(gh pr list --head dev --base main --state open --json number --jq '.[0].number // empty')
          if [ -n "$PR_NUMBER" ]; then
            echo "exists=true" >> $GITHUB_OUTPUT
            echo "number=$PR_NUMBER" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
            echo "number=" >> $GITHUB_OUTPUT
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract environment variables from commit messages
        id: extract-env-vars
        if: steps.check-diff.outputs.has-changes == 'true'
        run: |
          # Extract environment variables from commit bodies between main and dev
          # Uses %b (body only) to skip subject line which may contain false positives
          # Look for patterns like env.VARIABLE_NAME or VARIABLE_NAME (CONSTANT_CASE)
          git log origin/main..origin/dev --format="%b" --no-merges | \
            grep -oE '(env\.)?[A-Z_][A-Z0-9_]{2,}' | \
            sed -E 's/^env\.//' | \
            grep -E '^[A-Z_][A-Z0-9_]{2,}$' | \
            sed 's/^/- `env./' | \
            sed 's/$/`/' | \
            sort -u > env_vars_list.txt

      - name: Create Pull Request dev → main
        if: steps.check-diff.outputs.has-changes == 'true' && steps.check-pr.outputs.exists == 'false'
        run: |
          COMMITS=$(git log origin/main..origin/dev --pretty=format:"%h - %s (%an, %ar)" --no-merges | head -10)
          FILES_CHANGED=$(git diff --name-only origin/main origin/dev | head -20)

          cat > pr_body.md << 'EOF'
          ## Development to Production Sync

          **Auto-generated PR**: Syncing latest development changes to production environment.

          ### Recent Commits
          ```
          EOF
          echo "$COMMITS" >> pr_body.md
          cat >> pr_body.md << 'EOF'
          ```

          ### Files Modified
          EOF
          echo "$FILES_CHANGED" | sed 's/^/- `/' | sed 's/$/`/' >> pr_body.md
          # Only add env vars section if variables were found
          if [ -s env_vars_list.txt ]; then
            cat >> pr_body.md << 'EOF'

          ### Required Environment Variables
          EOF
            cat env_vars_list.txt >> pr_body.md
          fi
          cat >> pr_body.md << 'EOF'

          ### Pre-Merge Checklist
          - [ ] All CI/CD checks are passing
          - [ ] Test environment testing completed
          - [ ] Breaking changes documented (if any)
          - [ ] All Jira issues are linked and moved to specific column in Jira
          - [ ] All collections required to backup are set in the repository variables

          ### Merge Instructions
          - **IMPORTANT: Use "Create a merge commit" when merging**
          - Do NOT use squash or rebase merge

          ---
          *This PR was created automatically by GitHub Actions*
          EOF

          gh pr create \
            --title "Sync: dev → main" \
            --body-file pr_body.md \
            --head dev \
            --base main \
            --label "auto-generated" \
            --assignee "${{ github.actor }}"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Update existing Pull Request dev → main
        if: steps.check-diff.outputs.has-changes == 'true' && steps.check-pr.outputs.exists == 'true'
        run: |
          COMMITS=$(git log origin/main..origin/dev --pretty=format:"%h - %s (%an, %ar)" --no-merges | head -10)
          FILES_CHANGED=$(git diff --name-only origin/main origin/dev | head -20)

          cat > pr_body.md << 'EOF'
          ## Development to Production Sync

          **Auto-generated PR**: Syncing latest development changes to production environment.

          ### Recent Commits
          ```
          EOF
          echo "$COMMITS" >> pr_body.md
          cat >> pr_body.md << 'EOF'
          ```

          ### Files Modified
          EOF
          echo "$FILES_CHANGED" | sed 's/^/- `/' | sed 's/$/`/' >> pr_body.md
          # Only add env vars section if variables were found
          if [ -s env_vars_list.txt ]; then
            cat >> pr_body.md << 'EOF'

          ### Required Environment Variables
          EOF
            cat env_vars_list.txt >> pr_body.md
          fi
          cat >> pr_body.md << 'EOF'

          ### Pre-Merge Checklist
          - [ ] All CI/CD checks are passing
          - [ ] Test environment testing completed
          - [ ] Breaking changes documented (if any)
          - [ ] All Jira issues are linked and moved to specific column in Jira
          - [ ] All collections required to backup are set in the repository variables

          ### Merge Instructions
          - **IMPORTANT: Use "Create a merge commit" when merging**
          - Do NOT use squash or rebase merge

          ---
          *This PR was created automatically by GitHub Actions*
          EOF

          gh pr edit ${{ steps.check-pr.outputs.number }} \
            --body-file pr_body.md
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}