commerce/framework/vendure/auth/use-signup.tsx

import { useCallback } from 'react'
import type { HookFetcher } from '@commerce/utils/types'
import { CommerceError } from '@commerce/utils/errors'
import useCommerceSignup from '@commerce/use-signup'
import useCustomer from '../customer/use-customer'
import { SignupMutation, SignupMutationVariables } from '@framework/schema'

export const signupMutation = /* GraphQL */ `
    mutation signup($input: RegisterCustomerInput!) {
      registerCustomerAccount(input: $input) {
        ... on Success {
          success
        }
      }
    }
`;

export type SignupInput = {
  email: string;
  firstName: string;
  lastName: string;
  password: string;
}

export const fetcher: HookFetcher<SignupMutation, SignupMutationVariables> = (
  options,
  { input },
  fetch
) => {
  const { firstName, lastName, emailAddress, password } = input;
  if (!(firstName && lastName && emailAddress && password)) {
    throw new CommerceError({
      message:
        'A first name, last name, email and password are required to signup',
    })
  }

  return fetch({
    ...options,
    query: signupMutation,
    variables: { input },
  })
}

export function extendHook(customFetcher: typeof fetcher) {
  const useSignup = () => {
    const { revalidate } = useCustomer()
    const fn = useCommerceSignup<SignupMutation, SignupMutationVariables>({}, customFetcher)

    return useCallback(
      async function signup(input: SignupInput) {
        const data = await fn({
          input: {
            firstName: input.firstName,
            lastName: input.lastName,
            emailAddress: input.email,
            password: input.password,
          }
        })
        await revalidate()
        return data
      },
      [fn]
    )
  }

  useSignup.extend = extendHook

  return useSignup
}

export default extendHook(fetcher)