api.ts

/**
 * This is the client-side entrypoint for your tRPC API. It is used to create the `api` object which
 * contains the Next.js App-wrapper, as well as your type-safe React Query hooks.
 *
 * We also create a few inference helpers for input and output types.
 */
import type { AppRouter } from "@/server/api/root";
import { httpBatchLink } from "@trpc/client";
import { createTRPCNext } from "@trpc/next";
import type { inferRouterInputs, inferRouterOutputs } from "@trpc/server";
import superjson from "superjson";

const getBaseUrl = () => {
  if (typeof window !== "undefined") return ""; // browser should use relative url
  return `http://localhost:${process.env.PORT ?? 3000}`; // dev SSR should use localhost
};

/** A set of type-safe react-query hooks for your tRPC API. */
export const api = createTRPCNext<AppRouter>({
  config() {
    return {
      /**
       * Transformer used for data de-serialization from the server.
       *
       * @see https://trpc.io/docs/data-transformers
       */
      transformer: superjson,

      /**
       * Links used to determine request flow from client to server.
       *
       * @see https://trpc.io/docs/links
       */
      links: [
        httpBatchLink({
          url: `${getBaseUrl()}/api/trpc`,
        }),
        // createWSClient({
        //   url: `ws://localhost:3000`,
        // }),
        // loggerLink({
        //   enabled: (opts) =>
        //     process.env.NODE_ENV === "development" ||
        //     (opts.direction === "down" && opts.result instanceof Error),
        // }),
        // httpBatchLink({
        //   url: `${getBaseUrl()}/api/trpc`,
        // }),
      ],
    };
  },
  /**
   * Whether tRPC should await queries when server rendering pages.
   *
   * @see https://trpc.io/docs/nextjs#ssr-boolean-default-false
   */
  ssr: false,
});

/**
 * Inference helper for inputs.
 *
 * @example type HelloInput = RouterInputs['example']['hello']
 */
export type RouterInputs = inferRouterInputs<AppRouter>;

/**
 * Inference helper for outputs.
 *
 * @example type HelloOutput = RouterOutputs['example']['hello']
 */
export type RouterOutputs = inferRouterOutputs<AppRouter>;