♻️ Improve email abstraction (#863)

packages/backend/trpc/context.ts

@@ -1,3 +1,4 @@
+import { EmailClient, SupportedEmailProviders } from "@rallly/emails";
 import { createProxySSGHelpers } from "@trpc/react-query/ssg";
 import * as trpc from "@trpc/server";
 import * as trpcNext from "@trpc/server/adapters/next";
@@ -7,6 +8,9 @@ import superjson from "superjson";
 import { randomid } from "../utils/nanoid";
 import { appRouter } from "./routers";
 
+// Avoid use NODE_ENV directly because it will be replaced when using the dev server for e2e tests
+const env = process.env["NODE" + "_ENV"];
+
 export async function createContext(
   opts: trpcNext.CreateNextContextOptions | GetServerSidePropsContext,
 ) {
@@ -19,12 +23,30 @@ export async function createContext(
     opts.req.session.user = user;
     await opts.req.session.save();
   }
+
+  const emailClient = new EmailClient({
+    openPreviews: env === "development",
+    useTestServer: env === "test",
+    provider: {
+      name: (process.env.EMAIL_PROVIDER as SupportedEmailProviders) ?? "smtp",
+    },
+    mail: {
+      from: {
+        name: "Rallly",
+        address:
+          (process.env.NOREPLY_EMAIL as string) ||
+          (process.env.SUPPORT_EMAIL as string),
+      },
+    },
+  });
+
   return {
     user,
     session: opts.req.session,
     req: opts.req,
     res: opts.res,
     isSelfHosted: process.env.NEXT_PUBLIC_SELF_HOSTED === "true",
+    emailClient,
   };
 }