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1/**
2 * YOU PROBABLY DON'T NEED TO EDIT THIS FILE, UNLESS:
3 * 1. You want to modify request context (see Part 1).
4 * 2. You want to create a new middleware or type of procedure (see Part 3).
5 *
6 * TL;DR - This is where all the tRPC server stuff is created and plugged in. The pieces you will
7 * need to use are documented accordingly near the end.
8 */
9import { initTRPC } from "@trpc/server";
10import superjson from "superjson";
11import { ZodError } from "zod";
12
13import { db } from "~/server/db";
14
15/**
16 * 1. CONTEXT
17 *
18 * This section defines the "contexts" that are available in the backend API.
19 *
20 * These allow you to access things when processing a request, like the database, the session, etc.
21 *
22 * This helper generates the "internals" for a tRPC context. The API handler and RSC clients each
23 * wrap this and provides the required context.
24 *
25 * @see https://trpc.io/docs/server/context
26 */
27export const createTRPCContext = async (opts: { headers: Headers }) => {
28 return {
29 db,
30 ...opts,
31 };
32};
33
34/**
35 * 2. INITIALIZATION
36 *
37 * This is where the tRPC API is initialized, connecting the context and transformer. We also parse
38 * ZodErrors so that you get typesafety on the frontend if your procedure fails due to validation
39 * errors on the backend.
40 */
41const t = initTRPC.context<typeof createTRPCContext>().create({
42 transformer: superjson,
43 errorFormatter({ shape, error }) {
44 return {
45 ...shape,
46 data: {
47 ...shape.data,
48 zodError:
49 error.cause instanceof ZodError ? error.cause.flatten() : null,
50 },
51 };
52 },
53});
54
55/**
56 * Create a server-side caller.
57 *
58 * @see https://trpc.io/docs/server/server-side-calls
59 */
60export const createCallerFactory = t.createCallerFactory;
61
62/**
63 * 3. ROUTER & PROCEDURE (THE IMPORTANT BIT)
64 *
65 * These are the pieces you use to build your tRPC API. You should import these a lot in the
66 * "/src/server/api/routers" directory.
67 */
68
69/**
70 * This is how you create new routers and sub-routers in your tRPC API.
71 *
72 * @see https://trpc.io/docs/router
73 */
74export const createTRPCRouter = t.router;
75
76/**
77 * Public (unauthenticated) procedure
78 *
79 * This is the base piece you use to build new queries and mutations on your tRPC API. It does not
80 * guarantee that a user querying is authorized, but you can still access user session data if they
81 * are logged in.
82 */
83export const publicProcedure = t.procedure;