Move mx logic to top level functions middleware

functions/_middleware.ts

@@ -1,5 +1,7 @@
 import getPermissions from "./permissions.js";
 import { jsonError } from "./common.js";
+import { PrismaClient } from "../generated/prisma/client.js";
+import { PrismaD1 } from "@prisma/adapter-d1";
 import * as Sentry from "@sentry/cloudflare";
 
 async function constructHTML(context: RequestContext) {
@@ -28,6 +30,27 @@ async function generateTokenHash(token: string) {
     .replace(/=/g, "");
 }
 
+async function initializePrisma(context: RequestContext) {
+  const adapter = new PrismaD1(context.env.D1);
+  context.data.prisma = new PrismaClient({ adapter });
+
+  return await context.next();
+}
+
+async function mxAndBypassCheck(context: RequestContext) {
+  if (!(await context.env.DATA.get("mx"))) return await context.next();
+  const cookies = context.request.headers.get("cookie")?.split(/; *?/);
+  const isAPI = new URL(context.request.url).pathname.startsWith("/api");
+
+  if (!cookies?.length || !cookies.find((c) => c.startsWith("mxb="))) {
+    if (isAPI) return jsonError("API is undergoing maintenance", 503);
+
+    context.data.mx = true;
+  }
+
+  return await context.next();
+}
+
 async function refreshAuth(context: RequestContext) {
   const { current_user: currentUser } = context.data;
 
@@ -395,5 +418,6 @@ export const onRequest = [
   setTheme,
   constructHTML,
   setBody,
+  initializePrisma,
   setHeaders,
 ];