PR checks

.github/workflows/auto-close-spam.yml

@@ -0,0 +1,74 @@
+name: Auto-close spam PRs
+
+on:
+  pull_request_target:
+    types: [opened]
+
+jobs:
+  check-spam:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            const pr = context.payload.pull_request;
+            const author = pr.user.login;
+
+            // Skip PRs from repo owner
+            if (author === 'arjunkomath') {
+              console.log('PR from repo owner, skipping.');
+              return;
+            }
+
+            const title = pr.title || '';
+            const body = (pr.body || '').trim();
+            const headBranch = pr.head.ref;
+
+            // Strip template boilerplate to measure actual content
+            const templatePatterns = [
+              /<!--.*?-->/gs,
+              /^## .+$/gm,
+              /^- \[ \] .+$/gm,
+              /^Fixes #\s*$/gm,
+            ];
+            let strippedBody = body;
+            for (const pattern of templatePatterns) {
+              strippedBody = strippedBody.replace(pattern, '');
+            }
+            strippedBody = strippedBody.trim();
+
+            let reason = '';
+
+            // Check: empty or near-empty body
+            if (strippedBody.length < 50) {
+              reason = 'PR description is empty or too short';
+            }
+
+            // Check: title too short
+            if (!reason && title.length < 20) {
+              reason = 'PR title is too short';
+            }
+
+            if (!reason) {
+              console.log('PR looks legitimate, skipping.');
+              return;
+            }
+
+            console.log(`Closing PR #${pr.number}: ${reason}`);
+
+            // Comment and close
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: pr.number,
+              body: `This PR was automatically closed. Reason: **${reason}**.`
+            });
+
+            await github.rest.pulls.update({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: pr.number,
+              state: 'closed',
+            });