From 45f0fc5352cbb5bd22cab7149e5573408f1646af Mon Sep 17 00:00:00 2001
From: Ender <33337309+e3ndr@users.noreply.github.com>
Date: Thu, 21 Sep 2023 17:29:01 -0500
Subject: [PATCH] Public API: CORS.

---
 public-api/src/main.mjs | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

diff --git a/public-api/src/main.mjs b/public-api/src/main.mjs
index da2cbf9..16b4919 100644
--- a/public-api/src/main.mjs
+++ b/public-api/src/main.mjs
@@ -1,18 +1,37 @@
 import * as env from "./env.mjs";
 
+function handleCORS(request, response) {
+    response.headers.set("Access-Control-Allow-Origin", "*");
+    response.headers.set("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, PATCH, DELETE, OPTIONS");
+    response.headers.set("Access-Control-Max-Age", "86400");
+    response.headers.set("Access-Control-Allow-Headers", request.headers.get("Access-Control-Request-Headers"));
+}
+
 export default {
     fetch: async function (request, _env) {
+        let response;
+
         try {
             console.log("Incoming request!");
-            env.configure(_env);
 
-            console.log("Handling request...");
+            if (request.method == "OPTIONS") {
+                console.log("Handling options!");
+                response = new Response(null);
+            } else {
+                console.log("Handling request!");
+                env.configure(_env);
+
+                const router = (await import("./routes/index.mjs")).default;
+                response = await router.handle(request, env);
+            }
 
-            const router = (await import("./routes/index.mjs")).default;
-            return await router.handle(request, env);
         } catch (e) {
-            console.error("Internal error:", e.toString(), e.stack);
+            console.error(e);
             return new Response("Internal Error.");
         }
+
+        handleCORS(request, response);
+
+        return response;
     },
 };