name: Create/Delete Branch for Pull Request

on:
  pull_request:
    types:
      - opened
      - reopened
      - synchronize
      - closed

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}

jobs:
  setup:
    name: Setup
    outputs:
      branch: ${{ steps.branch_name.outputs.current_branch }}
    runs-on: ubuntu-latest
    steps:
      - name: Get branch name
        id: branch_name
        uses: tj-actions/branch-names@v8

  create_neon_branch:
    name: Create Neon Branch
    outputs:
      db_url: ${{ steps.create_neon_branch_encode.outputs.db_url }}
      db_url_with_pooler: ${{ steps.create_neon_branch_encode.outputs.db_url_with_pooler }}
    needs: setup
    if: |
      github.event_name == 'pull_request' && (
      github.event.action == 'synchronize'
      || github.event.action == 'opened'
      || github.event.action == 'reopened')
    runs-on: ubuntu-latest
    steps:
      - name: Create Neon Branch
        id: create_neon_branch
        uses: neondatabase/create-branch-action@v5
        with:
          project_id: ${{ vars.NEON_PROJECT_ID }}
          branch_name: preview/pr-${{ github.event.number }}-${{ needs.setup.outputs.branch }}
          api_key: ${{ secrets.NEON_API_KEY }}

# The step above creates a new Neon branch.
# You may want to do something with the new branch, such as run migrations, run tests
# on it, or send the connection details to a hosting platform environment.
# The branch DATABASE_URL is available to you via:
# "${{ steps.create_neon_branch.outputs.db_url_with_pooler }}".
# It's important you don't log the DATABASE_URL as output as it contains a username and
# password for your database.
# For example, you can uncomment the lines below to run a database migration command:
#      - name: Run Migrations
#        run: npm run db:migrate
#        env:
#          # to use pooled connection
#          DATABASE_URL: "${{ steps.create_neon_branch.outputs.db_url_with_pooler }}"
#          # OR to use unpooled connection
#          # DATABASE_URL: "${{ steps.create_neon_branch.outputs.db_url }}"

  delete_neon_branch:
    name: Delete Neon Branch
    needs: setup
    if: github.event_name == 'pull_request' && github.event.action == 'closed'
    runs-on: ubuntu-latest
    steps:
      - name: Delete Neon Branch
        uses: neondatabase/delete-branch-action@v3
        with:
          project_id: ${{ vars.NEON_PROJECT_ID }}
          branch: preview/pr-${{ github.event.number }}-${{ needs.setup.outputs.branch }}
          api_key: ${{ secrets.NEON_API_KEY }}