import {
  IUseCase,
  IUseCaseError,
  IUseCaseRequest,
  UseCaseError,
} from "@/contexts/common/application";
import { IRepositoryManager } from "@/contexts/common/domain";
import { IInfrastructureError } from "@/contexts/common/infrastructure";
import { ISequelizeAdapter } from "@/contexts/common/infrastructure/sequelize";
import {
  Collection,
  Currency,
  Description,
  DomainError,
  IDomainError,
  Language,
  Quantity,
  Result,
  UTCDateValue,
  UniqueID,
  UnitPrice,
} from "@shared/contexts";

import { IUpdateQuote_Request_DTO } from "@shared/contexts";
import { IQuoteRepository, Quote, QuoteItem, QuoteStatus } from "../../domain";

export interface IUpdateQuoteUseCaseRequest extends IUseCaseRequest {
  id: UniqueID;
  QuoteDTO: IUpdateQuote_Request_DTO;
}

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

export class UpdateQuoteUseCase
  implements IUseCase<IUpdateQuoteUseCaseRequest, Promise<UpdateQuoteResponseOrError>>
{
  private _adapter: ISequelizeAdapter;
  private _repositoryManager: IRepositoryManager;

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

  async execute(request: IUpdateQuoteUseCaseRequest): Promise<UpdateQuoteResponseOrError> {
    const { id, QuoteDTO } = request;
    const QuoteRepository = this._getQuoteRepository();

    // Comprobar que existe el Quote
    const idExists = await QuoteRepository().exists(id);
    if (!idExists) {
      const message = `Quote ID not found`;
      return Result.fail(
        UseCaseError.create(UseCaseError.NOT_FOUND_ERROR, message, {
          path: "id",
        })
      );
    }

    // Crear usuario
    const QuoteOrError = this._tryCreateQuoteInstance(QuoteDTO, id);

    if (QuoteOrError.isFailure) {
      const { error: domainError } = QuoteOrError;
      let errorCode = "";
      let message = "";

      switch (domainError.code) {
        // Errores manuales
        case DomainError.INVALID_INPUT_DATA:
          errorCode = UseCaseError.INVALID_INPUT_DATA;
          message = "El usuario tiene algún dato erróneo.";
          break;

        default:
          errorCode = UseCaseError.UNEXCEPTED_ERROR;
          message = domainError.message;
          break;
      }

      return Result.fail(UseCaseError.create(errorCode, message, domainError));
    }

    return this._updateQuote(QuoteOrError.object);
  }

  private async _updateQuote(Quote: Quote) {
    // Guardar el contacto
    const transaction = this._adapter.startTransaction();
    const QuoteRepository = this._getQuoteRepository();
    let QuoteRepo: IQuoteRepository;

    try {
      await transaction.complete(async (t) => {
        QuoteRepo = QuoteRepository({ transaction: t });
        await QuoteRepo.update(Quote);
      });

      return Result.ok<Quote>(Quote);
    } catch (error: unknown) {
      const _error = error as IInfrastructureError;
      return Result.fail(UseCaseError.create(UseCaseError.REPOSITORY_ERROR, _error.message));
    }
  }

  private _tryCreateQuoteInstance(
    quoteDTO: IUpdateQuote_Request_DTO,
    quoteId: UniqueID
  ): Result<Quote, IDomainError> {
    const statusOrError = QuoteStatus.create(quoteDTO.status);
    if (statusOrError.isFailure) {
      return Result.fail(statusOrError.error);
    }

    const dateOrError = UTCDateValue.create(quoteDTO.date);
    if (dateOrError.isFailure) {
      return Result.fail(dateOrError.error);
    }

    const languageOrError = Language.createFromCode(quoteDTO.language_code);
    if (languageOrError.isFailure) {
      return Result.fail(languageOrError.error);
    }

    const currencyOrError = Currency.createFromCode(quoteDTO.currency_code);
    if (currencyOrError.isFailure) {
      return Result.fail(currencyOrError.error);
    }

    const items = new Collection<QuoteItem>(
      quoteDTO.items?.map(
        (item) =>
          QuoteItem.create({
            description: Description.create(item.description).object,
            quantity: Quantity.create(item.quantity).object,
            unitPrice: UnitPrice.create({
              amount: item.unit_price.amount,
              currencyCode: item.unit_price.currency,
              precision: item.unit_price.precision,
            }).object,
          }).object
      )
    );

    return Quote.create(
      {
        status: statusOrError.object,
        date: dateOrError.object,
        language: languageOrError.object,
        currency: currencyOrError.object,
        items,
      },
      quoteId
    );
  }

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