ruch/example/src/domains/user/services/UserService.ts

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/**
 * Services and business logic for the User domain.
 * @packageDocumentation
 */

import type {
  UserEntity,
  UserCreationData,
  UserUpdateData
} from '../entities/User';

import type {
  UserPort
} from '../ports/UserPort';

export class UserError extends Error {
  constructor(
    public code: string,
    message: string,
  ) {
    super(message);
    this.name = 'UserError';
  }
}

/**
 * Service implementation for User domain
 */
export class UserService {
  constructor(private readonly port: UserPort) {}

  /**
   * Get all user entities
   */
  async getAll(): Promise<UserEntity[]> {
    try {
      return await this.port.getAll();
    } catch (error) {
      throw new UserError('GET_ALL_ERROR', 'Failed to get all user entities');
    }
  }

  /**
   * Get a user entity by ID
   */
  async getById(id: string): Promise<UserEntity> {
    try {
      return await this.port.getById(id);
    } catch (error) {
      throw new UserError('GET_BY_ID_ERROR', `Failed to get user entity with id ${id}`);
    }
  }

  /**
   * Create a new user entity
   */
  async create(data: UserCreationData): Promise<UserEntity> {
    try {
      return await this.port.create(data);
    } catch (error) {
      throw new UserError('CREATE_ERROR', 'Failed to create user entity');
    }
  }

  /**
   * Update an existing user entity
   */
  async update(id: string, data: UserUpdateData): Promise<UserEntity> {
    try {
      return await this.port.update(id, data);
    } catch (error) {
      throw new UserError('UPDATE_ERROR', `Failed to update user entity with id ${id}`);
    }
  }

  /**
   * Delete a user entity
   */
  async delete(id: string): Promise<void> {
    try {
      await this.port.delete(id);
    } catch (error) {
      throw new UserError('DELETE_ERROR', `Failed to delete user entity with id ${id}`);
    }
  }
}