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

export class ServicesService extends BaseService {
  async createService(variables: VariablesOf<typeof GQL.CreateServiceDocument>) {
    await this.checkIsBanned();

    const { customer } = await this._getUser();

    const { mutate } = await this.getGraphQLClient();

    const mutationResult = await mutate({
      mutation: GQL.CreateServiceDocument,
      variables: {
        ...variables,
        data: {
          ...variables.data,
          master: customer?.documentId,
        },
      },
    });

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

    return mutationResult.data;
  }

  async getService(variables: VariablesOf<typeof GQL.GetServiceDocument>) {
    await this.checkIsBanned();

    const { query } = await this.getGraphQLClient();

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

    return result.data;
  }

  async getServices(variables: VariablesOf<typeof GQL.GetServicesDocument>) {
    await this.checkIsBanned();

    const { query } = await this.getGraphQLClient();

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

    return result.data;
  }

  async updateService(variables: VariablesOf<typeof GQL.UpdateServiceDocument>) {
    await this.checkIsBanned();

    await this.checkPermission(variables);

    const { mutate } = await this.getGraphQLClient();

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

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

    return mutationResult.data;
  }

  private async checkPermission(
    variables: Pick<VariablesOf<typeof GQL.GetServiceDocument>, 'documentId'>,
  ) {
    const { customer } = await this._getUser();

    const { service } = await this.getService({ documentId: variables.documentId });

    if (service?.master?.documentId !== customer?.documentId) throw new Error(ERRORS.NO_PERMISSION);
  }
}