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

import type {
  ProductEntity,
  ProductCreationData,
  ProductUpdateData
} from '../entities/Product';

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

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

/**
 * Service implementation for Product domain
 */
export class ProductService {
  constructor(private readonly port: ProductPort) {}

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

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

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

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

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