46 lines
1.4 KiB
TypeScript
46 lines
1.4 KiB
TypeScript
import type { UseCase, UseCaseOutputPort } from '@core/shared/application';
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import { Result } from '@core/shared/application/Result';
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import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
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import type { IDriverRepository } from '../../domain/repositories/IDriverRepository';
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/**
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* Input type for retrieving total number of drivers.
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*/
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export type GetTotalDriversInput = {};
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/**
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* Domain result model for the total number of drivers.
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*/
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export type GetTotalDriversResult = {
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totalDrivers: number;
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};
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export type GetTotalDriversErrorCode = 'REPOSITORY_ERROR';
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export class GetTotalDriversUseCase implements UseCase<GetTotalDriversInput, void, GetTotalDriversErrorCode> {
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constructor(
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private readonly driverRepository: IDriverRepository,
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private readonly output: UseCaseOutputPort<GetTotalDriversResult>,
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) {}
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async execute(
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_input: GetTotalDriversInput,
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): Promise<Result<void, ApplicationErrorCode<GetTotalDriversErrorCode, { message: string }>>> {
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void _input;
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try {
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const drivers = await this.driverRepository.findAll();
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const result: GetTotalDriversResult = { totalDrivers: drivers.length };
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this.output.present(result);
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return Result.ok(void 0);
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} catch (error) {
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const message = (error as Error | undefined)?.message ?? 'Failed to compute total drivers';
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return Result.err({
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code: 'REPOSITORY_ERROR',
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details: { message },
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});
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}
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}
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} |