import { Injectable, Logger } from '@nestjs/common';
import { MarketplaceBridge, MarketplaceReview } from './marketplace.service';
import { ScrapingService } from '../scraping/scraping.service';

interface CdiscountProduct {
  productId: string;
  title: string;
  price: number;
  salePrice: number;
  stockCount: number;
  rating: number;
  reviewCount: number;
  url: string;
  images: string[];
  sellerName: string;
  sellerId: string;
  shippingTime: string;
  freeShipping: boolean;
  isCdiscountSold: boolean;
  category: string;
}

@Injectable()
export class CdiscountBridge implements MarketplaceBridge {
  private readonly logger = new Logger(CdiscountBridge.name);
  private readonly apiUrl = 'https://api.cdiscount.com/api/v1';

  constructor(
    private readonly apiLogin: string,
    private readonly apiPassword: string,
    private readonly token: string,
    private readonly scrapingService: ScrapingService,
  ) {}

  private getAuthHeaders(): Record<string, string> {
    return {
      Authorization: `Basic ${Buffer.from(`${this.apiLogin}:${this.apiPassword}`).toString('base64')}`,
      'Api-Token': this.token,
      'Content-Type': 'application/json',
    };
  }

  async syncProducts(): Promise<any> {
    try {
      const response = await fetch(`${this.apiUrl}/products`, {
        headers: this.getAuthHeaders(),
      });

      if (!response.ok) {
        return {
          success: false,
          platform: 'CDISCOUNT',
          error: `HTTP ${response.status}`,
        };
      }

      const data = await response.json();
      return {
        success: true,
        platform: 'CDISCOUNT',
        count: data.products?.length || 0,
      };
    } catch (error) {
      return {
        success: false,
        platform: 'CDISCOUNT',
        error: (error as Error).message,
      };
    }
  }

  async syncOrders(): Promise<any> {
    try {
      const response = await fetch(`${this.apiUrl}/orders`, {
        headers: this.getAuthHeaders(),
      });
      if (!response.ok) throw new Error(`HTTP ${response.status}`);
      const data = await response.json();
      return {
        success: true,
        platform: 'CDISCOUNT',
        orders: data.orders || [],
      };
    } catch (error) {
      return {
        success: false,
        platform: 'CDISCOUNT',
        error: (error as Error).message,
      };
    }
  }

  async updateStock(sku: string, stock: number): Promise<any> {
    try {
      const response = await fetch(`${this.apiUrl}/products/${sku}/stock`, {
        method: 'PUT',
        headers: this.getAuthHeaders(),
        body: JSON.stringify({ stock }),
      });
      return { success: response.ok, sku, stock, platform: 'CDISCOUNT' };
    } catch (error) {
      throw error;
    }
  }

  async updatePrice(sku: string, price: number): Promise<any> {
    try {
      const response = await fetch(`${this.apiUrl}/products/${sku}/price`, {
        method: 'PUT',
        headers: this.getAuthHeaders(),
        body: JSON.stringify({ price }),
      });
      return { success: response.ok, sku, price, platform: 'CDISCOUNT' };
    } catch (error) {
      throw error;
    }
  }

  async getStoreInfo(storeId: string): Promise<any> {
    try {
      const url = `https://www.cdiscount.com/vendeur/${storeId}`;
      const scraped = await this.scrapingService.scrapeStore(url, 'CDISCOUNT');
      return {
        storeId,
        storeName: scraped?.storeName || storeId,
        platform: 'CDISCOUNT',
        country: 'France',
      };
    } catch (error) {
      throw error;
    }
  }

  async getStoreProducts(
    storeId?: string,
    limit: number = 10,
  ): Promise<CdiscountProduct[]> {
    try {
      const response = await fetch(
        `${this.apiUrl}/products?seller_id=${storeId}&limit=${limit}`,
        { headers: this.getAuthHeaders() },
      );
      const data = await response.json();
      return (data.products || []).map((item: any) => ({
        productId: item.id,
        title: item.name,
        price: item.price,
        salePrice: item.sale_price || item.price,
        stockCount: item.stock || 0,
        rating: item.rating || 0,
        reviewCount: item.review_count || 0,
        url: item.url,
        images: item.images || [],
        sellerName: item.seller_name,
        sellerId: item.seller_id,
        shippingTime: item.shipping_time,
        freeShipping: item.free_shipping || false,
        isCdiscountSold: item.is_cdiscount_sold || false,
        category: item.category,
      }));
    } catch (error) {
      throw error;
    }
  }
}