introduce TRPC and service layer

server/api/trpc/[trpc].ts

@@ -0,0 +1,37 @@
+/**
+ * This is the API-handler of your app that contains all your API routes.
+ * On a bigger app, you will probably want to split this file up into multiple files.
+ */
+import { createNuxtApiHandler } from 'trpc-nuxt'
+import { z } from 'zod'
+
+import { publicProcedure, router } from '~/server/trpc/trpc'
+import { createContext } from '~~/server/trpc/context';
+import NotesService from '~~/lib/services/notes.service';
+
+export const appRouter = router({
+  notes: publicProcedure
+    .input(
+      z.object({
+        text: z.string().nullish(),
+      }),
+    )
+    .query(async ({ ctx, input }) => {
+      const notesService = new NotesService(ctx.prisma);
+      const notes = await notesService.getNotesForAccountId(ctx.dbUser.membership?.account_id);
+      return {
+        notes,
+      }
+    }),
+})
+
+// export only the type definition of the API
+// None of the actual implementation is exposed to the client
+export type AppRouter = typeof appRouter;
+
+// export API handler
+export default createNuxtApiHandler({
+  router: appRouter,
+  createContext: createContext,
+  onError({ error}) { console.error(error)}, // TODO - logging and reporting  
+})