name: Fixes validation for backport PR

on:
  pull_request:
    types: [opened, reopened, edited]
    branches: [branch-*]

jobs:
  check-fixes-prefix:
    runs-on: ubuntu-latest
    steps:
      - name: Check PR body for "Fixes" prefix patterns
        uses: actions/github-script@v7
        with:
          script: |
            const body = context.payload.pull_request.body;
            const repo = context.payload.repository.full_name;
            
            // Regular expression pattern to check for "Fixes" prefix
            // Adjusted to dynamically insert the repository full name
            const pattern = `Fixes:? (?:#|${repo.replace('/', '\\/')}#|https://github\\.com/${repo.replace('/', '\\/')}/issues/)(\\d+)`;
            const regex = new RegExp(pattern);
            
            if (!regex.test(body)) {
              core.setFailed("PR body does not contain a valid 'Fixes' reference.");
            }