name: Rename Migrations

on:
  pull_request:
    types: [closed]
    paths:
      - 'backend/src/db/migrations/**'

jobs:
  rename:
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true

    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Get list of newly added files in migration folder
        run: |
          git diff --name-status HEAD^ HEAD backend/src/db/migrations | grep '^A' | cut -f2 | xargs -n1 basename > added_files.txt
          if [ ! -s added_files.txt ]; then
            echo "No new files added. Skipping"
            echo "SKIP_RENAME=true" >> $GITHUB_ENV
          fi

      - name: Script to rename migrations
        if: env.SKIP_RENAME != 'true'
        run: python .github/resources/rename_migration_files.py

      - name: Commit and push changes
        if: env.SKIP_RENAME != 'true'
        run: |
          git config user.name github-actions
          git config user.email github-actions@github.com
          git add ./backend/src/db/migrations
          rm added_files.txt
          git commit -m "chore: renamed new migration files to latest timestamp (gh-action)"

      - name: Get PR details
        id: pr_details
        run: |
          PR_NUMBER=${{ github.event.pull_request.number }}
          PR_MERGER=$(curl -s "https://api.github.com/repos/${{ github.repository }}/pulls/$PR_NUMBER" | jq -r '.merged_by.login')
          
          echo "PR Number: $PR_NUMBER"
          echo "PR Merger: $PR_MERGER"
          echo "pr_merger=$PR_MERGER" >> $GITHUB_OUTPUT

      - name: Create Pull Request
        if: env.SKIP_RENAME != 'true'
        uses: peter-evans/create-pull-request@v6
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: 'chore: renamed new migration files to latest UTC (gh-action)'
          title: 'GH Action: rename new migration file timestamp'
          branch-suffix: timestamp
          reviewers: ${{ steps.pr_details.outputs.pr_merger }}