Presupuestador_web/server/src/contexts/sales/application/Quote/GetQuote.useCase.ts

import {
  IUseCase,
  IUseCaseError,
  IUseCaseRequest,
  UseCaseError,
} from "@/contexts/common/application/useCases";
import { IRepositoryManager } from "@/contexts/common/domain";
import { ISequelizeAdapter } from "@/contexts/common/infrastructure/sequelize";
import { Result, UniqueID } from "@shared/contexts";
import { IQuoteRepository } from "../../domain";

import { IInfrastructureError } from "@/contexts/common/infrastructure";
import { Quote } from "../../domain/entities/Quote";

export interface IGetQuoteUseCaseRequest extends IUseCaseRequest {
  id: UniqueID;
}

export type GetQuoteResponseOrError =
  | Result<never, IUseCaseError> // Misc errors (value objects)
  | Result<Quote, never>; // Success!

export class GetQuoteUseCase
  implements IUseCase<IGetQuoteUseCaseRequest, Promise<GetQuoteResponseOrError>>
{
  private _adapter: ISequelizeAdapter;
  private _repositoryManager: IRepositoryManager;

  constructor(props: { adapter: ISequelizeAdapter; repositoryManager: IRepositoryManager }) {
    this._adapter = props.adapter;
    this._repositoryManager = props.repositoryManager;
  }

  private getRepositoryByName<T>(name: string) {
    return this._repositoryManager.getRepository<T>(name);
  }

  async execute(request: IGetQuoteUseCaseRequest): Promise<GetQuoteResponseOrError> {
    const { id } = request;

    // Validación de datos
    // No hay en este caso

    return await this.findQuote(id);
  }

  private async findQuote(id: UniqueID) {
    const transaction = this._adapter.startTransaction();
    const QuoteRepoBuilder = this._getQuoteRepository();

    let Quote: Quote | null = null;

    try {
      await transaction.complete(async (t) => {
        const QuoteRepo = QuoteRepoBuilder({ transaction: t });
        Quote = await QuoteRepo.getById(id);
      });

      if (!Quote) {
        return Result.fail(UseCaseError.create(UseCaseError.NOT_FOUND_ERROR, "Quote not found"));
      }

      return Result.ok<Quote>(Quote!);
    } catch (error: unknown) {
      const _error = error as IInfrastructureError;
      return Result.fail(
        UseCaseError.create(UseCaseError.REPOSITORY_ERROR, "Error al consultar el usuario", _error)
      );
    }
  }

  private _getQuoteRepository() {
    return this._repositoryManager.getRepository<IQuoteRepository>("Quote");
  }
}