trpc.ts

/**
 * This is your entry point to setup the root configuration for tRPC on the server.
 * - `initTRPC` should only be used once per app.
 * - We export only the functionality that we use so we can enforce which base procedures should be used
 *
 * Learn how to create protected base procedures and other things below:
 * @see https://trpc.io/docs/v10/router
 * @see https://trpc.io/docs/v10/procedures
 */

import { initTRPC, TRPCError } from "@trpc/server";
import superjson from "superjson";
import type { OpenApiMeta } from "trpc-openapi";
import { ZodError } from "zod";

import type { Context } from "~/server/context";

const t = initTRPC
  .meta<OpenApiMeta>()
  .context<Context>()
  .create({
    /**
     * @see https://trpc.io/docs/v10/data-transformers
     */
    transformer: superjson,
    /**
     * @see https://trpc.io/docs/v10/error-formatting
     */
    errorFormatter({ shape, error }) {
      return {
        ...shape,
        data: {
          ...shape.data,
          zodError:
            error.code === "BAD_REQUEST" && error.cause instanceof ZodError
              ? error.cause.flatten()
              : null,
        },
      };
    },
  });

/**
 * Create a router
 * @see https://trpc.io/docs/v10/router
 */
export const router = t.router;

/**
 * Create an unprotected procedure
 * @see https://trpc.io/docs/v10/procedures
 **/
export const publicProcedure = t.procedure;

/**
 * Create a protected procedure
 * @see https://trpc.io/docs/v10/procedures
 **/
export const protectedProcedure = publicProcedure.use(({ ctx, next }) => {
  if (!ctx.session) {
    throw new TRPCError({
      code: "FORBIDDEN",
      message: "You must be logged in to perform this action",
    });
  }
  return next();
});

/**
 * @see https://trpc.io/docs/v10/middlewares
 */
export const middleware = t.middleware;

/**
 * @see https://trpc.io/docs/v10/merging-routers
 */
export const mergeRouters = t.mergeRouters;

export const createCallerFactory = t.createCallerFactory;