name: PR Conventions

on:
  pull_request:
    types: [ opened, synchronize, reopened, edited, labeled, unlabeled ]

jobs:
  pr-title:
    name: "Check"
    runs-on: ubuntu-latest
    steps:
      - name: Check PR Conventions
        uses: actions/github-script@v7
        with:
          script: |
            const issueRegex = /#\d+/i;
            if (issueRegex.test(context.payload.pull_request.title)) {
              core.setFailed("Please mention the issue number in the PR description, not in the title. Make sure to write 'closes #<number>'.");
              return;
            }

            const closingRegex = /\b(close|closes|closed|fix|fixes|fixed|resolve|resolves|resolved|contributes to):?\s+#\d+/i;
            if (issueRegex.test(context.payload.pull_request.body) && !closingRegex.test(context.payload.pull_request.body)) {
              core.setFailed("The PR description must contain 'closes #<number>' to link to the issue that it closes.");
              return;
            }

            const bodyLines = (context.payload.pull_request.body || "").split(/\r?\n/);
            const checklistIndex = bodyLines.map(l => l.includes("https://antennapod.org")).lastIndexOf(true);
            if (checklistIndex === -1) {
              core.setFailed("It looks like you did not follow the PR template. The checklist from the template is missing or incomplete.");
              return;
            } else if (bodyLines.length - checklistIndex - 1 > 5) {
              core.setFailed("It looks like you did not follow the PR template. Please add your description above the checklist, not below.");
              return;
            }