ci: block invalid PRs

Author: cotes2020

.github/workflows/pr-filter.yml

@@ -0,0 +1,23 @@
+name: Block Invalid PRs
+
+on:
+  pull_request:
+    types: [opened, edited]
+
+permissions:
+  pull-requests: write
+
+jobs:
+  check-template:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Check PR Content
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const script = require('.github/workflows/scripts/pr-filter.js');
+            await script({ github, context });

.github/workflows/scripts/pr-filter.js

@@ -0,0 +1,42 @@
+function noTypes(body) {
+  return (
+    body.includes('[ ] Bug fix') &&
+    body.includes('[ ] New feature') &&
+    body.includes('[ ] Improvement') &&
+    body.includes('[ ] Breaking change') &&
+    body.includes('[ ] Documentation update')
+  );
+}
+
+function noDescription(rawMarkdown) {
+  const commentRegex = /<!--[\s\S]*?-->/g;
+  const markdown = rawMarkdown.replace(commentRegex, '');
+
+  const descriptionRegex = /## Description\s*([\s\S]*?)(##|$)/;
+  const match = markdown.match(descriptionRegex);
+
+  if (match) {
+    const descriptionContent = match[1].trim();
+    return descriptionContent.length === 0;
+  }
+  return false;
+}
+
+module.exports = async ({ github, context }) => {
+  const pr = context.payload.pull_request;
+  const body = pr.body === null ? '' : pr.body.trim();
+
+  if (body === '' || noTypes(body) || noDescription(body)) {
+    await github.rest.pulls.update({
+      ...context.repo,
+      pull_number: pr.number,
+      state: 'closed'
+    });
+
+    await github.rest.issues.createComment({
+      ...context.repo,
+      issue_number: pr.number,
+      body: "Oops, it seems you've submitted an invalid Pull Request. No worries, we'll close it for you."
+    });
+  }
+};