Adds netlify function for deployment (#8)

* Adds netlify function for deployment

* Use the raw event body for signing

Author: twk3

eslint.config.mjs

@@ -24,7 +24,7 @@ export default [
     'plugin:prettier/recommended',
   ),
   {
-    files: ['{src,test}/**/*.ts'],
+    files: ['{src,test,netlify}/**/*.ts'],
     plugins: {
       '@typescript-eslint': typescriptEslint,
       prettier,

netlify/functions/webhooks.ts

@@ -0,0 +1,41 @@
+import { createProbot } from 'probot';
+import { Handler } from '@netlify/functions';
+import type { WebhookEventName } from '@octokit/webhooks-types';
+import app from '../../src/index';
+
+const handler: Handler = async event => {
+  const probot = createProbot();
+  try {
+    probot.log.info('loading app');
+    await probot.load(app);
+
+    const deliveryHeader = (event.headers['X-GitHub-Delivery'] ||
+      event.headers['x-github-delivery']) as string;
+    const nameHeader = (event.headers['X-GitHub-Event'] ||
+      event.headers['x-github-event']) as WebhookEventName;
+    const sigHeader = (event.headers['X-Hub-Signature-256'] ||
+      event.headers['x-hub-signature-256']) as string;
+
+    await probot.webhooks.verifyAndReceive({
+      id: deliveryHeader,
+      name: nameHeader,
+      signature: sigHeader,
+      payload: event.body ?? '',
+    });
+
+    probot.log.info('webhook verified');
+
+    return {
+      statusCode: 200,
+      body: '{"ok":true}',
+    };
+  } catch (error) {
+    probot.log.error(error);
+    return {
+      statusCode: error.status || error.statusCode || 500,
+      error: 'Probot error',
+    };
+  }
+};
+
+export { handler };

package.json

@@ -24,7 +24,9 @@
   "devDependencies": {
     "@eslint/eslintrc": "^3.1.0",
     "@eslint/js": "^8.57.0",
+    "@netlify/functions": "^2.8.0",
     "@octokit/types": "^13.5.0",
+    "@octokit/webhooks-types": "^7.5.1",
     "@types/node": "^20.0.0",
     "@typescript-eslint/eslint-plugin": "^7.13.1",
     "@typescript-eslint/parser": "^7.13.1",

src/index.ts

@@ -59,5 +59,6 @@ export default (app: Probot) => {
     },
   );
 
+  app.log.info('probot loaded');
   Handlers(app);
 };