import api from './api';

export interface ProductResponse {
  productId: number;
  productName: string;
  description: string;
  price: number;
  stockQuantity: number;
  imageUrl: string;
  categoryId: number;
  categoryName: string;
  createdAt: string;
  updatedAt: string;
}

export interface ProductListResponse {
  products: ProductResponse[];
  currentPage: number;
  totalItems: number;
  totalPages: number;
  hasNext: boolean;
  hasPrevious: boolean;
}

class ProductService {
  /**
   * Lấy danh sách tất cả sản phẩm
   */
  async getAllProducts(
    page: number = 0,
    size: number = 10,
    sortBy: string = 'productId',
    sortDir: 'asc' | 'desc' = 'asc'
  ): Promise<ProductListResponse> {
    const params = new URLSearchParams({
      page: page.toString(),
      size: size.toString(),
      sortBy,
      sortDir,
    });

    return await api.get<ProductListResponse>(`/products?${params}`);
  }

  /**
   * Lấy chi tiết sản phẩm theo ID
   */
  async getProductById(id: number): Promise<ProductResponse> {
    return await api.get<ProductResponse>(`/products/${id}`);
  }

  /**
   * Lấy sản phẩm theo category
   */
  async getProductsByCategory(
    categoryId: number,
    page: number = 0,
    size: number = 10,
    sortBy: string = 'productId',
    sortDir: 'asc' | 'desc' = 'asc'
  ): Promise<ProductListResponse> {
    const params = new URLSearchParams({
      page: page.toString(),
      size: size.toString(),
      sortBy,
      sortDir,
    });

    return await api.get<ProductListResponse>(`/products/category/${categoryId}?${params}`);
  }

  /**
   * Tìm kiếm sản phẩm
   */
  async searchProducts(
    keyword: string,
    page: number = 0,
    size: number = 10,
    sortBy: string = 'productId',
    sortDir: 'asc' | 'desc' = 'asc'
  ): Promise<ProductListResponse> {
    const params = new URLSearchParams({
      keyword,
      page: page.toString(),
      size: size.toString(),
      sortBy,
      sortDir,
    });

    return await api.get<ProductListResponse>(`/products/search?${params}`);
  }

  /**
   * Lấy sản phẩm còn hàng
   */
  async getAvailableProducts(
    page: number = 0,
    size: number = 10,
    sortBy: string = 'productId',
    sortDir: 'asc' | 'desc' = 'asc'
  ): Promise<ProductListResponse> {
    const params = new URLSearchParams({
      page: page.toString(),
      size: size.toString(),
      sortBy,
      sortDir,
    });

    return await api.get<ProductListResponse>(`/products/available?${params}`);
  }
}

export default new ProductService();