adds firebase function to fetch github projects (#58)

Author: zaucy

.gitignore

@@ -1,8 +1,9 @@
 /bazel-*
-/node_modules
+**/node_modules
 /user.bazelrc
 /profile.json
 /.firebase
+**-debug.log
 
 # Generated reference XML used during development
 /src/assets/_devref

firebase.json

@@ -1,6 +1,10 @@
 {
   "$schema": "./node_modules/firebase-tools/schema/firebase-config.json",
+  "functions": {
+    "runtime": "nodejs16"
+  },
   "hosting": {
+    "site": "ecsact-dev",
     "public": "public",
     "ignore": [
       "firebase.json",

functions/index.js

@@ -0,0 +1,65 @@
+const https = require('https');
+const functions = require('firebase-functions');
+const {defineSecret} = require('firebase-functions/params');
+const SEAUBOT_GITHUB_TOKEN = defineSecret('SEAUBOT_GITHUB_TOKEN');
+
+const fetchQuery = `query {
+  organization(login:"ecsact-dev") {
+    projectsV2(orderBy: {field:TITLE, direction:ASC}, first:10, query:"is:open") {
+      nodes {
+        number
+        title
+        shortDescription
+        readme
+      }
+    }
+  }
+}`;
+
+exports.fetchProjects = functions
+	.runWith({secrets: [SEAUBOT_GITHUB_TOKEN]})
+	.https.onRequest((req, res) => {
+		res.set('Access-Control-Allow-Origin', '*');
+		res.set('Access-Control-Allow-Methods', 'GET');
+		if (req.method === 'OPTIONS') {
+			res.status(204).end('');
+			return;
+		}
+
+		const ghReq = https.request({
+			host: 'api.github.com',
+			path: '/graphql',
+			method: 'POST',
+			headers: {
+				'User-Agent': 'Ecsact Dev Cloud Function',
+				'Content-Type': 'application/json',
+				Authorization: `bearer ${SEAUBOT_GITHUB_TOKEN.value()}`,
+			},
+		});
+
+		ghReq.on('response', ghRes => {
+			let msg = '';
+			ghRes.setEncoding('utf8');
+			ghRes.on('error', () => {
+				res.status(500).end(`Error GitHub Response: ${err.message}`);
+			});
+
+			ghRes.on('data', chunk => {
+				msg += chunk;
+			});
+			ghRes.on('end', () => {
+				res.status(ghRes.statusCode);
+				res.set('Content-Type', 'application/json');
+				if (ghRes.statusCode === 200) {
+					res.set('Cache-Control', 'public, max-age=86400');
+				}
+				res.end(msg);
+			});
+		});
+
+		ghReq.on('error', err => {
+			res.status(500).end(`Error GitHub Request: ${err.message}`);
+		});
+
+		ghReq.end(JSON.stringify({query: fetchQuery}));
+	});