import { initTRPC } from "@trpc/server"
import { ZodError } from "zod"

import { transformer } from "./transformer"

import type { Context } from "./context"

export type Meta = {
  authRequired?: boolean
}

const t = initTRPC
  .context<Context>()
  .meta<Meta>()
  .create({
    transformer,
    errorFormatter({ shape, error }) {
      return {
        ...shape,
        data: {
          ...shape.data,
          cause: error.cause instanceof ZodError ? undefined : error.cause,
          zodError:
            error.cause instanceof ZodError ? error.cause.flatten() : null,
        },
      }
    },
  })

export const {
  createCallerFactory,
  mergeRouters,
  router,
  procedure,
  middleware,
} = t