import { Injectable } from '@nestjs/common';
import { IPlatformAdapter } from './IPlatformAdapter';
import { Product } from '../../../types/models/Product';
import { Order } from '../../../types/models/Order';
import { ShopInfo } from '../../../types/models/ShopInfo';
import { Logger } from '@nestjs/common';

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

  async authorize(authInfo: Record<string, any>): Promise<boolean> {
    this.logger.log('通用平台授权开始');
    try {
      // 模拟通用平台授权过程
      const { apiKey, apiSecret } = authInfo;
      if (!apiKey || !apiSecret) {
        throw new Error('缺少必要的授权信息');
      }
      
      // 模拟授权成功
      this.authToken = 'generic_auth_token_' + Date.now();
      this.logger.log('通用平台授权成功');
      return true;
    } catch (error) {
      this.logger.error('通用平台授权失败', error);
      throw error;
    }
  }

  async getShopInfo(): Promise<ShopInfo> {
    this.logger.log('获取通用平台店铺信息');
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    // 模拟获取店铺信息
    return {
      id: 'generic_shop_123',
      name: 'Test Generic Store',
      description: 'Test Generic Store Description',
      status: 'active',
      createdAt: new Date(),
      updatedAt: new Date()
    };
  }

  async getProducts(limit: number = 10, offset: number = 0): Promise<Product[]> {
    this.logger.log(`获取通用平台商品列表，limit: ${limit}, offset: ${offset}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    // 模拟获取商品列表
    const products: Product[] = [];
    for (let i = 0; i < limit; i++) {
      products.push({
        id: `generic_product_${offset + i + 1}`,
        name: `Generic Product ${offset + i + 1}`,
        sku: `GEN-${offset + i + 1}`,
        price: 70 + (offset + i) * 7,
        stock: 160,
        description: `Generic Product ${offset + i + 1} Description`,
        images: [`https://example.com/generic_image${offset + i + 1}.jpg`],
        categories: ['General', 'Miscellaneous'],
        attributes: {
          brand: 'Generic Brand',
          model: `Model ${offset + i + 1}`
        },
        createdAt: new Date(),
        updatedAt: new Date()
      });
    }
    return products;
  }

  async getOrders(limit: number = 10, offset: number = 0): Promise<Order[]> {
    this.logger.log(`获取通用平台订单列表，limit: ${limit}, offset: ${offset}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    // 模拟获取订单列表
    const orders: Order[] = [];
    for (let i = 0; i < limit; i++) {
      orders.push({
        id: `generic_order_${offset + i + 1}`,
        customerId: `customer_${offset + i + 1}`,
        totalAmount: 140 + (offset + i) * 35,
        status: 'processing',
        items: [
          {
            productId: `generic_product_${offset + i + 1}`,
            quantity: 1,
            price: 110 + (offset + i) * 7
          }
        ],
        shippingAddress: {
          name: `Customer ${offset + i + 1}`,
          address: `303 Generic St`,
          city: 'Generic City',
          state: 'GS',
          zip: '12345',
          country: 'US'
        },
        paymentMethod: 'credit_card',
        createdAt: new Date(),
        updatedAt: new Date()
      });
    }
    return orders;
  }

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

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

  async listProduct(product: Product): Promise<string> {
    this.logger.log(`上架通用平台商品: ${product.name}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    // 模拟上架商品
    const productId = `generic_product_${Date.now()}`;
    this.logger.log(`通用平台商品上架成功，商品ID: ${productId}`);
    return productId;
  }

  async delistProduct(productId: string): Promise<boolean> {
    this.logger.log(`下架通用平台商品: ${productId}`);
    if (!this.authToken) {
      throw new Error('未授权');
    }
    
    // 模拟下架商品
    this.logger.log(`通用平台商品下架成功: ${productId}`);
    return true;
  }

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