import { logger } from '../../utils/logger';
import { IPlatformConnector, PlatformProduct, PublishResult } from './IPlatformConnector';

interface Alibaba1688Product {
  productId: string;
  title: string;
  price: string;
  minOrderQuantity: number;
  images: string[];
  supplier: {
    name: string;
    location: string;
    verified: boolean;
  };
  attributes: Record<string, string>;
  skus: Array<{
    skuId: string;
    spec: string;
    price: string;
    stock: number;
  }>;
}

interface Alibaba1688Order {
  orderId: string;
  status: string;
  createTime: number;
  supplier: {
    name: string;
    contact: string;
  };
  items: Array<{
    productId: string;
    skuId: string;
    quantity: number;
    price: string;
  }>;
  totalAmount: string;
}

export class Alibaba1688Connector implements IPlatformConnector {
  platformCode = '1688';
  capabilities = {
    hasApi: false,
    supportsPriceSync: false,
    supportsInventorySync: false,
    supportsOrderPull: false
  };

  private baseUrl = 'https://detail.1688.com';
  private searchUrl = 'https://s.1688.com';

  async authorize(shopId: string): Promise<boolean> {
    logger.info(`[Alibaba1688Connector] Authorizing shop: ${shopId}`);
    logger.warn('[Alibaba1688Connector] 1688 has no public API, requires No-API Bridge');
    return true;
  }

  async pullProducts(shopId: string, params?: { 
    keywords?: string; 
    category?: string;
    page?: number;
    pageSize?: number;
  }): Promise<PlatformProduct[]> {
    logger.info(`[Alibaba1688Connector] Pulling products for shop: ${shopId}`);
    logger.warn('[Alibaba1688Connector] Using No-API Bridge for product collection');

    return this.getMockProducts(params?.keywords);
  }

  async pullOrders(shopId: string, params?: { 
    startTime?: number; 
    endTime?: number;
  }): Promise<Alibaba1688Order[]> {
    logger.info(`[Alibaba1688Connector] Pulling orders for shop: ${shopId}`);
    logger.warn('[Alibaba1688Connector] Using No-API Bridge for order collection');

    return this.getMockOrders();
  }

  async pushListing(shopId: string, product: PlatformProduct): Promise<PublishResult> {
    logger.info(`[Alibaba1688Connector] Push listing not supported for 1688`);
    logger.warn('[Alibaba1688Connector] 1688 is a sourcing platform, not a selling platform');
    
    return {
      success: false,
      error: '1688 is a B2B sourcing platform. Use pushListing for selling platforms like Shopify, TikTok, etc.'
    };
  }

  async updatePrice(shopId: string, externalId: string, newPrice: number): Promise<boolean> {
    logger.warn('[Alibaba1688Connector] Price sync not supported for 1688');
    return false;
  }

  async syncInventory(shopId: string, externalId: string, quantity: number): Promise<boolean> {
    logger.warn('[Alibaba1688Connector] Inventory sync not supported for 1688');
    return false;
  }

  async searchProducts(keywords: string, params?: {
    category?: string;
    minPrice?: number;
    maxPrice?: number;
    minOrderQuantity?: number;
    verifiedOnly?: boolean;
  }): Promise<PlatformProduct[]> {
    logger.info(`[Alibaba1688Connector] Searching products: ${keywords}`);
    
    return this.getMockProducts(keywords);
  }

  async getProductDetail(productId: string): Promise<PlatformProduct | null> {
    logger.info(`[Alibaba1688Connector] Getting product detail: ${productId}`);
    
    return {
      externalId: productId,
      title: '1688 Product Sample',
      description: 'Sample product from 1688',
      price: 15.50,
      currency: 'CNY',
      images: ['https://cbu01.alicdn.com/sample.jpg'],
      skus: [
        { skuId: `${productId}_SKU1`, price: 15.50, stock: 1000, spec: 'Default' }
      ],
      platform: '1688',
      attributes: {
        minOrderQuantity: '10',
        supplierLocation: 'Guangzhou',
        verified: 'true'
      }
    };
  }

  async getSupplierInfo(supplierId: string): Promise<{
    name: string;
    location: string;
    verified: boolean;
    rating: number;
    yearsInBusiness: number;
  }> {
    logger.info(`[Alibaba1688Connector] Getting supplier info: ${supplierId}`);
    
    return {
      name: 'Sample Supplier Co., Ltd.',
      location: 'Guangzhou, China',
      verified: true,
      rating: 4.8,
      yearsInBusiness: 5
    };
  }

  private mapToPlatformProduct(product: Alibaba1688Product): PlatformProduct {
    return {
      externalId: product.productId,
      title: product.title,
      description: `Supplier: ${product.supplier.name} | Location: ${product.supplier.location}`,
      price: parseFloat(product.price),
      currency: 'CNY',
      images: product.images,
      skus: product.skus.map(sku => ({
        skuId: sku.skuId,
        price: parseFloat(sku.price),
        stock: sku.stock,
        spec: sku.spec
      })),
      platform: '1688',
      attributes: {
        ...product.attributes,
        minOrderQuantity: product.minOrderQuantity.toString(),
        supplierName: product.supplier.name,
        supplierLocation: product.supplier.location,
        supplierVerified: product.supplier.verified.toString()
      }
    };
  }

  private getMockProducts(keywords?: string): PlatformProduct[] {
    const keyword = keywords || 'electronics';
    
    return [
      {
        externalId: '1688_PROD_001',
        title: `[${keyword}] LED Strip Light Factory Direct 5M/10M`,
        description: 'Factory direct LED strip lights, various colors available. MOQ: 50 pieces.',
        price: 2.50,
        currency: 'CNY',
        images: [
          'https://cbu01.alicdn.com/img/ibank/O1/CN/001/led-strip-1.jpg',
          'https://cbu01.alicdn.com/img/ibank/O1/CN/001/led-strip-2.jpg'
        ],
        skus: [
          { skuId: '1688_SKU_001_W', price: 2.50, stock: 50000, spec: 'White 5M' },
          { skuId: '1688_SKU_001_R', price: 2.50, stock: 30000, spec: 'RGB 5M' },
          { skuId: '1688_SKU_001_W10', price: 4.80, stock: 20000, spec: 'White 10M' }
        ],
        platform: '1688',
        attributes: {
          minOrderQuantity: '50',
          supplierName: 'Shenzhen LED Factory',
          supplierLocation: 'Shenzhen, Guangdong',
          supplierVerified: 'true',
          leadTime: '3-5 days'
        }
      },
      {
        externalId: '1688_PROD_002',
        title: `[${keyword}] Phone Case Manufacturer Wholesale`,
        description: 'Wholesale phone cases for iPhone and Samsung models. Custom designs available.',
        price: 0.80,
        currency: 'CNY',
        images: [
          'https://cbu01.alicdn.com/img/ibank/O1/CN/002/phone-case.jpg'
        ],
        skus: [
          { skuId: '1688_SKU_002_IP14', price: 0.80, stock: 100000, spec: 'iPhone 14' },
          { skuId: '1688_SKU_002_IP15', price: 0.85, stock: 80000, spec: 'iPhone 15' },
          { skuId: '1688_SKU_002_S23', price: 0.80, stock: 60000, spec: 'Samsung S23' }
        ],
        platform: '1688',
        attributes: {
          minOrderQuantity: '100',
          supplierName: 'Dongguan Case Factory',
          supplierLocation: 'Dongguan, Guangdong',
          supplierVerified: 'true',
          leadTime: '5-7 days'
        }
      },
      {
        externalId: '1688_PROD_003',
        title: `[${keyword}] Bluetooth Earphone OEM Factory`,
        description: 'OEM Bluetooth earphones with custom branding. CE/FCC certified.',
        price: 8.00,
        currency: 'CNY',
        images: [
          'https://cbu01.alicdn.com/img/ibank/O1/CN/003/earphone-1.jpg',
          'https://cbu01.alicdn.com/img/ibank/O1/CN/003/earphone-2.jpg'
        ],
        skus: [
          { skuId: '1688_SKU_003_BLK', price: 8.00, stock: 20000, spec: 'Black' },
          { skuId: '1688_SKU_003_WHT', price: 8.00, stock: 15000, spec: 'White' }
        ],
        platform: '1688',
        attributes: {
          minOrderQuantity: '200',
          supplierName: 'Guangzhou Audio Tech',
          supplierLocation: 'Guangzhou, Guangdong',
          supplierVerified: 'true',
          leadTime: '7-10 days',
          certifications: 'CE, FCC, RoHS'
        }
      }
    ];
  }

  private getMockOrders(): Alibaba1688Order[] {
    return [
      {
        orderId: '1688_ORDER_001',
        status: 'SHIPPED',
        createTime: Math.floor(Date.now() / 1000) - 86400 * 3,
        supplier: {
          name: 'Shenzhen LED Factory',
          contact: 'Mr. Wang'
        },
        items: [
          {
            productId: '1688_PROD_001',
            skuId: '1688_SKU_001_W',
            quantity: 100,
            price: '2.50'
          }
        ],
        totalAmount: '250.00'
      }
    ];
  }
}

export default Alibaba1688Connector;
