import { getClientWithToken } from '../apollo/client';
import { ERRORS } from '../constants/errors';
import * as GQL from '../types';
import { type VariablesOf } from '@graphql-typed-document-node/core';

const DEFAULT_CUSTOMER_ROLE = GQL.Enum_Customer_Role.Client;

export class RegistrationService {
  async checkCustomerExists(variables: VariablesOf<typeof GQL.CheckCustomerExistsDocument>) {
    const { query } = await getClientWithToken();

    const result = await query({
      query: GQL.CheckCustomerExistsDocument,
      variables,
    });

    const customer = result.data.customers.at(0);

    return { customer };
  }

  async createCustomer(variables: VariablesOf<typeof GQL.CreateCustomerDocument>) {
    const { mutate } = await getClientWithToken();

    const mutationResult = await mutate({
      mutation: GQL.CreateCustomerDocument,
      variables: {
        ...variables,
        data: {
          ...variables.data,
          role: DEFAULT_CUSTOMER_ROLE,
        },
      },
    });

    const error = mutationResult.errors?.at(0);
    if (error) throw new Error(error.message);

    return mutationResult.data;
  }

  async updateCustomer(variables: VariablesOf<typeof GQL.UpdateCustomerDocument>) {
    if (variables.data.bannedUntil || variables.data.phone) {
      throw new Error(ERRORS.NO_PERMISSION);
    }

    const { mutate } = await getClientWithToken();

    const mutationResult = await mutate({
      mutation: GQL.UpdateCustomerDocument,
      variables,
    });

    const error = mutationResult.errors?.at(0);
    if (error) throw new Error(error.message);

    return mutationResult.data;
  }
}