use environment variables from cloudflare's environment

server/trpc-handler.ts

@@ -1,7 +1,14 @@
 import { appRouter } from "../trpc/router";
 // TODO: stop using universal-middleware and directly integrate server middlewares instead and/or use vike-server https://vike.dev/server. (Bati generates boilerplates that use universal-middleware https://github.com/magne4000/universal-middleware to make Bati's internal logic easier. This is temporary and will be removed soon.)
-import type { Get, UniversalHandler } from "@universal-middleware/core";
+import {
+  type Get,
+  type UniversalHandler,
+  env as getEnv,
+} from "@universal-middleware/core";
 import { fetchRequestHandler } from "@trpc/server/adapters/fetch";
+import { getDb, getDbClient } from "../database/postgres";
+import { getOpenrouter } from "../pages/chat/provider";
+import { env as processEnv } from "./env.js";
 
 export const trpcHandler = ((endpoint) => (request, context, runtime) => {
   return fetchRequestHandler({
@@ -9,11 +16,26 @@ export const trpcHandler = ((endpoint) => (request, context, runtime) => {
     req: request,
     router: appRouter,
     createContext({ req, resHeaders }) {
+      const env = getEnv(runtime);
+      const dbClient = getDbClient(
+        (env.POSTGRES_CONNECTION_STRING ||
+          processEnv.POSTGRES_CONNECTION_STRING) as string
+      );
+      const db = getDb(
+        (env.POSTGRES_CONNECTION_STRING ||
+          processEnv.POSTGRES_CONNECTION_STRING) as string
+      );
+      const openrouter = getOpenrouter(
+        (env.OPENROUTER_API_KEY || processEnv.OPENROUTER_API_KEY) as string
+      );
       return {
         ...context,
         ...runtime,
         req,
         resHeaders,
+        dbClient,
+        db,
+        openrouter,
       };
     },
     allowMethodOverride: true,