import { Injectable } from '@nestjs/common';
import { IPlatformAdapter } from './IPlatformAdapter';
import { Product, ProductStatus } from '../../../types/models/Product';
import { Order, OrderStatus, PaymentMethod } from '../../../types/models/Order';
import { ShopInfo, ShopStatus } from '../../../types/models/ShopInfo';
import { Logger } from '@nestjs/common';

@Injectable()
export class AmazonAdapter implements IPlatformAdapter {
  private readonly logger = new Logger(AmazonAdapter.name);
  private authToken: string | null = null;

  async authorize(authInfo: Record<string, unknown>): Promise<boolean> {
    this.logger.log('Amazon授权开始');
    try {
      const { accessKey, secretKey, sellerId, marketplaceId } = authInfo as Record<string, string>;
      if (!accessKey || !secretKey || !sellerId || !marketplaceId) {
        throw new Error('缺少必要的授权信息');
      }
      
      this.authToken = 'amazon_auth_token_' + Date.now();
      this.logger.log('Amazon授权成功');
      return true;
    } catch (error) {
      this.logger.error('Amazon授权失败', error);
      throw error;
    }
  }

  async getShopInfo(): Promise<ShopInfo> {
    this.logger.log('获取Amazon店铺信息');
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    return {
      id: 'amazon_shop_123',
      name: 'Test Amazon Store',
      description: 'Test Amazon Store Description',
      status: ShopStatus.ACTIVE,
      createdAt: new Date(),
      updatedAt: new Date()
    };
  }

  async getProducts(limit: number = 10, offset: number = 0): Promise<Product[]> {
    this.logger.log(`获取Amazon商品列表，limit: ${limit}, offset: ${offset}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    const products: Product[] = [];
    for (let i = 0; i < limit; i++) {
      products.push({
        id: `amazon_product_${offset + i + 1}`,
        name: `Amazon Product ${offset + i + 1}`,
        sku: `AMZ-${offset + i + 1}`,
        price: 100 + (offset + i) * 10,
        stock: 100,
        description: `Amazon Product ${offset + i + 1} Description`,
        images: [`https://example.com/image${offset + i + 1}.jpg`],
        categories: ['Electronics', 'Gadgets'],
        attributes: {
          brand: 'Amazon Brand',
          model: `Model ${offset + i + 1}`
        },
        status: 'active' as ProductStatus,
        createdAt: new Date(),
        updatedAt: new Date()
      });
    }
    return products;
  }

  async getOrders(limit: number = 10, offset: number = 0): Promise<Order[]> {
    this.logger.log(`获取Amazon订单列表，limit: ${limit}, offset: ${offset}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    const orders: Order[] = [];
    for (let i = 0; i < limit; i++) {
      orders.push({
        id: `amazon_order_${offset + i + 1}`,
        customerId: `customer_${offset + i + 1}`,
        totalAmount: 200 + (offset + i) * 50,
        status: 'shipped' as OrderStatus,
        items: [
          {
            productId: `amazon_product_${offset + i + 1}`,
            productName: `Amazon Product ${offset + i + 1}`,
            quantity: 1,
            unitPrice: 150 + (offset + i) * 10,
            totalPrice: 150 + (offset + i) * 10
          }
        ],
        shippingAddress: {
          name: `Customer ${offset + i + 1}`,
          address: `123 Main St`,
          city: 'New York',
          state: 'NY',
          zip: '10001',
          country: 'US'
        },
        paymentMethod: 'credit_card' as PaymentMethod,
        createdAt: new Date(),
        updatedAt: new Date()
      });
    }
    return orders;
  }

  async updateProductPrice(productId: string, price: number): Promise<boolean> {
    this.logger.log(`更新Amazon商品价格: ${productId}, 价格: ${price}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    this.logger.log(`Amazon商品价格更新成功: ${productId}, 价格: ${price}`);
    return true;
  }

  async updateProductStock(productId: string, stock: number): Promise<boolean> {
    this.logger.log(`更新Amazon商品库存: ${productId}, 库存: ${stock}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    this.logger.log(`Amazon商品库存更新成功: ${productId}, 库存: ${stock}`);
    return true;
  }

  async listProduct(product: Product): Promise<string> {
    this.logger.log(`上架Amazon商品: ${product.name}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    const productId = `amazon_product_${Date.now()}`;
    this.logger.log(`Amazon商品上架成功，商品ID: ${productId}`);
    return productId;
  }

  async delistProduct(productId: string): Promise<boolean> {
    this.logger.log(`下架Amazon商品: ${productId}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    this.logger.log(`Amazon商品下架成功: ${productId}`);
    return true;
  }

  async getApiStatus(): Promise<{ status: string; timestamp: number }> {
    this.logger.log('获取Amazon API状态');
    return {
      status: 'healthy',
      timestamp: Date.now()
    };
  }
}
