import { ISiteAdapter } from '../interface/site-adapter.interface';
import { ShopyyService } from '../service/shopyy.service';
import {
  UnifiedAddressDTO,
  UnifiedCustomerDTO,
  UnifiedMediaDTO,
  UnifiedOrderDTO,
  UnifiedOrderLineItemDTO,
  UnifiedPaginationDTO,
  UnifiedProductDTO,
  UnifiedProductVariationDTO,
  UnifiedSearchParamsDTO,
  UnifiedSubscriptionDTO,
  UnifiedReviewPaginationDTO,
  UnifiedReviewDTO,
  UnifiedWebhookDTO,
  UnifiedWebhookPaginationDTO,
  CreateWebhookDTO,
  UpdateWebhookDTO,
} from '../dto/site-api.dto';
import {
  ShopyyCustomer,
  ShopyyOrder,
  ShopyyProduct,
  ShopyyVariant,
  ShopyyWebhook,
} from '../dto/shopyy.dto';

export class ShopyyAdapter implements ISiteAdapter {
  constructor(private site: any, private shopyyService: ShopyyService) { 
    this.mapCustomer = this.mapCustomer.bind(this);
    this.mapProduct = this.mapProduct.bind(this);
    this.mapVariation = this.mapVariation.bind(this);
    this.mapOrder = this.mapOrder.bind(this);
    this.mapMedia = this.mapMedia.bind(this);
    // this.mapSubscription = this.mapSubscription.bind(this);
  }

  private mapMedia(item: any): UnifiedMediaDTO {
    // 映射媒体项目
    return {
      id: item.id,
      date_created: item.created_at,
      date_modified: item.updated_at,
      source_url: item.src,
      title: item.alt || '',
      media_type: '', // Shopyy API未提供,暂时留空
      mime_type: '', // Shopyy API未提供,暂时留空
    };
  }

  private mapMediaSearchParams(params: UnifiedSearchParamsDTO): any {
    const { search, page, per_page } = params;
    const shopyyParams: any = {
      page: page || 1,
      limit: per_page || 10,
    };

    if (search) {
      shopyyParams.query = search;
    }

    return shopyyParams;
  }

  private mapProduct(item: ShopyyProduct & { permalink?: string }): UnifiedProductDTO {
    // 映射产品状态
    function mapProductStatus(status: number) {
      return status === 1 ? 'publish' : 'draft';
    }
    return {
      id: item.id,
      name: item.name || item.title,
      type: String(item.product_type ?? ''),
      status: mapProductStatus(item.status),
      sku: item.variant?.sku || '',
      regular_price: String(item.variant?.price ?? ''),
      sale_price: String(item.special_price ?? ''),
      price: String(item.price ?? ''),
      stock_status: item.inventory_tracking === 1 ? 'instock' : 'outofstock',
      stock_quantity: item.inventory_quantity,
      images: (item.images || []).map((img: any) => ({
        id: img.id || 0,
        src: img.src,
        name: '',
        alt: img.alt || '',
        // 排序
        position: img.position || '',
      })),
      attributes: (item.options || []).map(option => ({
        id: option.id || 0,
        name: option.option_name || '',
        options: (option.values || []).map(value => value.option_value || ''),
      })),
      tags: (item.tags || []).map((t: any) => ({
        id: t.id || 0,
        name: t.name || '',
      })),
      // shopyy叫做专辑
      categories: item.collections.map((c: any) => ({
        id: c.id || 0,
        name: c.title || '',
      })),
      variations: item.variants?.map(this.mapVariation.bind(this)) || [],
      permalink: item.permalink,
      date_created:
        typeof item.created_at === 'number'
          ? new Date(item.created_at * 1000).toISOString()
          : String(item.created_at ?? ''),
      date_modified:
        typeof item.updated_at === 'number'
          ? new Date(item.updated_at * 1000).toISOString()
          : String(item.updated_at ?? ''),
      raw: item,
    };
  }

  private mapVariation(variant: ShopyyVariant): UnifiedProductVariationDTO {
    // 映射变体
    return {
      id: variant.id,
      sku: variant.sku || '',
      regular_price: String(variant.price ?? ''),
      sale_price: String(variant.special_price ?? ''),
      price: String(variant.price ?? ''),
      stock_status:
        variant.inventory_tracking === 1 ? 'instock' : 'outofstock',
      stock_quantity: variant.inventory_quantity,
    };
  }

  private mapOrder(item: ShopyyOrder): UnifiedOrderDTO {
    // 提取账单和送货地址 如果不存在则为空对象
    const billing = (item as any).billing_address || {};
    const shipping = (item as any).shipping_address || {};

    // 构建账单地址对象
    const billingObj: UnifiedAddressDTO = {
      first_name: billing.first_name || item.firstname || '',
      last_name: billing.last_name || item.lastname || '',
      fullname: billing.name || `${item.firstname} ${item.lastname}`.trim(),
      company: billing.company || '',
      email: item.customer_email || item.email || '',
      phone: billing.phone || (item as any).telephone || '',
      address_1: billing.address1 || item.payment_address || '',
      address_2: billing.address2 || '',
      city: billing.city || item.payment_city || '',
      state: billing.province || item.payment_zone || '',
      postcode: billing.zip || item.payment_postcode || '',
      country:
        billing.country_name ||
        billing.country_code ||
        item.payment_country ||
        '',
    };

    // 构建送货地址对象
    const shippingObj: UnifiedAddressDTO = {
      first_name: shipping.first_name || item.firstname || '',
      last_name: shipping.last_name || item.lastname || '',
      fullname: shipping.name || '',
      company: shipping.company || '',
      address_1:
        shipping.address1 ||
        (typeof item.shipping_address === 'string'
          ? item.shipping_address
          : '') ||
        '',
      address_2: shipping.address2 || '',
      city: shipping.city || item.shipping_city || '',
      state: shipping.province || item.shipping_zone || '',
      postcode: shipping.zip || item.shipping_postcode || '',
      country:
        shipping.country_name ||
        shipping.country_code ||
        item.shipping_country ||
        '',
    };

    // 格式化地址为字符串
    const formatAddress = (addr: UnifiedAddressDTO) => {
      return [
        addr.fullname,
        addr.company,
        addr.address_1,
        addr.address_2,
        addr.city,
        addr.state,
        addr.postcode,
        addr.country,
        addr.phone,
      ]
        .filter(Boolean)
        .join(', ');
    };

    const lineItems: UnifiedOrderLineItemDTO[] = (item.products || []).map(
      (p: any) => ({
        id: p.id,
        name: p.product_title || p.name,
        product_id: p.product_id,
        quantity: p.quantity,
        total: String(p.price ?? ''),
        sku: p.sku || p.sku_code || '',
      })
    );

    return {
      id: item.id || item.order_id,
      number: item.order_number || item.order_sn,
      status: String(item.status || item.order_status),
      currency: item.currency_code || item.currency,
      total: String(item.total_price ?? item.total_amount ?? ''),
      customer_id: item.customer_id || item.user_id,
      customer_name:
        item.customer_name || `${item.firstname} ${item.lastname}`.trim(),
      email: item.customer_email || item.email,
      line_items: lineItems,
      sales: lineItems, // 兼容前端
      billing: billingObj,
      shipping: shippingObj,
      billing_full_address: formatAddress(billingObj),
      shipping_full_address: formatAddress(shippingObj),
      payment_method: item.payment_method,
      refunds: [],
      date_created:
        typeof item.created_at === 'number'
          ? new Date(item.created_at * 1000).toISOString()
          : item.date_added ||
          (typeof item.created_at === 'string' ? item.created_at : ''),
      date_modified:
        typeof item.updated_at === 'number'
          ? new Date(item.updated_at * 1000).toISOString()
          : item.date_updated ||
          item.last_modified ||
          (typeof item.updated_at === 'string' ? item.updated_at : ''),
      raw: item,
    };
  }

  private mapCustomer(item: ShopyyCustomer): UnifiedCustomerDTO {
    // 处理多地址结构
    const addresses = item.addresses || [];
    const defaultAddress = item.default_address || (addresses.length > 0 ? addresses[0] : {});

    // 尝试从地址列表中获取billing和shipping
    // 如果没有明确区分，默认使用默认地址或第一个地址
    const billingAddress = defaultAddress;
    const shippingAddress = defaultAddress;

    const billing = {
      first_name: billingAddress.first_name || item.first_name || '',
      last_name: billingAddress.last_name || item.last_name || '',
      fullname: billingAddress.name || `${billingAddress.first_name || item.first_name || ''} ${billingAddress.last_name || item.last_name || ''}`.trim(),
      company: billingAddress.company || '',
      email: item.email || '',
      phone: billingAddress.phone || item.contact || '',
      address_1: billingAddress.address1 || '',
      address_2: billingAddress.address2 || '',
      city: billingAddress.city || '',
      state: billingAddress.province || '',
      postcode: billingAddress.zip || '',
      country: billingAddress.country_name || billingAddress.country_code || item.country?.country_name || ''
    };

    const shipping = {
      first_name: shippingAddress.first_name || item.first_name || '',
      last_name: shippingAddress.last_name || item.last_name || '',
      fullname: shippingAddress.name || `${shippingAddress.first_name || item.first_name || ''} ${shippingAddress.last_name || item.last_name || ''}`.trim(),
      company: shippingAddress.company || '',
      address_1: shippingAddress.address1 || '',
      address_2: shippingAddress.address2 || '',
      city: shippingAddress.city || '',
      state: shippingAddress.province || '',
      postcode: shippingAddress.zip || '',
      country: shippingAddress.country_name || shippingAddress.country_code || item.country?.country_name || ''
    };

    return {
      id: item.id || item.customer_id,
      orders: Number(item.orders_count ?? item.order_count ?? item.orders ?? 0),
      total_spend: Number(item.total_spent ?? item.total_spend_amount ?? item.total_spend_money ?? 0),
      first_name: item.first_name || item.firstname || '',
      last_name: item.last_name || item.lastname || '',
      fullname: item.fullname || item.customer_name || `${item.first_name || item.firstname || ''} ${item.last_name || item.lastname || ''}`.trim(),
      email: item.email || item.customer_email || '',
      phone: item.contact || billing.phone || item.phone || '',
      billing,
      shipping,
      date_created:
        typeof item.created_at === 'number'
          ? new Date(item.created_at * 1000).toISOString()
          : (typeof item.created_at === 'string' ? item.created_at : item.date_added || ''),
      date_modified:
        typeof item.updated_at === 'number'
          ? new Date(item.updated_at * 1000).toISOString()
          : (typeof item.updated_at === 'string' ? item.updated_at : item.date_updated || ''),
      raw: item,
    };
  }

  async getProducts(
    params: UnifiedSearchParamsDTO
  ): Promise<UnifiedPaginationDTO<UnifiedProductDTO>> {
    const response = await this.shopyyService.fetchResourcePaged<ShopyyProduct>(
      this.site,
      'products/list',
      params
    );
    const { items=[], total, totalPages, page, per_page } = response;
    const finalItems = items.map((item) => ({
        ...item,
        permalink: `${this.site.websiteUrl}/products/${item.handle}`,
      })).map(this.mapProduct.bind(this))
    return {
      items: finalItems as UnifiedProductDTO[],
      total,
      totalPages,
      page,
      per_page,
    };
  }

  async getAllProducts(params?: UnifiedSearchParamsDTO): Promise<UnifiedProductDTO[]> {
    // Shopyy getAllProducts 暂未实现
    throw new Error('Shopyy getAllProducts 暂未实现');
  }

  async getProduct(id: string | number): Promise<UnifiedProductDTO> {
    // 使用ShopyyService获取单个产品
    const product = await this.shopyyService.getProduct(this.site, id);
    return this.mapProduct(product);
  }

  async createProduct(data: Partial<UnifiedProductDTO>): Promise<UnifiedProductDTO> {
    const res = await this.shopyyService.createProduct(this.site, data);
    return this.mapProduct(res);
  }

  async updateProduct(id: string | number, data: Partial<UnifiedProductDTO>): Promise<boolean> {
    // Shopyy update returns boolean?
    // shopyyService.updateProduct returns boolean.
    // So I can't return the updated product.
    // I have to fetch it again or return empty/input.
    // Since getProduct is missing, I'll return input data as UnifiedProductDTO (mock).
    await this.shopyyService.updateProduct(this.site, String(id), data);
    return true;
  }

  async updateVariation(productId: string | number, variationId: string | number, data: any): Promise<any> {
    await this.shopyyService.updateVariation(this.site, String(productId), String(variationId), data);
    return { ...data, id: variationId };
  }

  async getOrderNotes(orderId: string | number): Promise<any[]> {
    return await this.shopyyService.getOrderNotes(this.site, orderId);
  }

  async createOrderNote(orderId: string | number, data: any): Promise<any> {
    return await this.shopyyService.createOrderNote(this.site, orderId, data);
  }

  async deleteProduct(id: string | number): Promise<boolean> {
    // Use batch delete
    await this.shopyyService.batchProcessProducts(this.site, { delete: [id] });
    return true;
  }

  async batchProcessProducts(
    data: { create?: any[]; update?: any[]; delete?: Array<string | number> }
  ): Promise<any> {
    return await this.shopyyService.batchProcessProducts(this.site, data);
  }

  async getOrders(
    params: UnifiedSearchParamsDTO
  ): Promise<UnifiedPaginationDTO<UnifiedOrderDTO>> {
    const { items, total, totalPages, page, per_page } =
      await this.shopyyService.fetchResourcePaged<any>(
        this.site,
        'orders',
        params
      );
    return {
      items: items.map(this.mapOrder.bind(this)),
      total,
      totalPages,
      page,
      per_page,
    };
  }

  async getAllOrders(params?: UnifiedSearchParamsDTO): Promise<UnifiedOrderDTO[]> {
    // Shopyy getAllOrders 暂未实现
    throw new Error('Shopyy getAllOrders 暂未实现');
  }

  async getOrder(id: string | number): Promise<UnifiedOrderDTO> {
    const data = await this.shopyyService.getOrder(String(this.site.id), String(id));
    return this.mapOrder(data);
  }

  async createOrder(data: Partial<UnifiedOrderDTO>): Promise<UnifiedOrderDTO> {
    const createdOrder = await this.shopyyService.createOrder(this.site, data);
    return this.mapOrder(createdOrder);
  }

  async updateOrder(id: string | number, data: Partial<UnifiedOrderDTO>): Promise<boolean> {
    return await this.shopyyService.updateOrder(this.site, String(id), data);
  }

  async deleteOrder(id: string | number): Promise<boolean> {
    return await this.shopyyService.deleteOrder(this.site, id);
  }

  async shipOrder(orderId: string | number, data: {
    tracking_number?: string;
    shipping_provider?: string;
    shipping_method?: string;
    items?: Array<{
      order_item_id: number;
      quantity: number;
    }>;
  }): Promise<any> {
    // 订单发货
    try {
      // 更新订单状态为已发货
      await this.shopyyService.updateOrder(this.site, String(orderId), { 
        status: 'completed',
        meta_data: [
          { key: '_tracking_number', value: data.tracking_number },
          { key: '_shipping_provider', value: data.shipping_provider },
          { key: '_shipping_method', value: data.shipping_method }
        ]
      });
      
      // 添加发货备注
      const note = `订单已发货${data.tracking_number ? `，物流单号：${data.tracking_number}` : ''}${data.shipping_provider ? `，物流公司：${data.shipping_provider}` : ''}`;
      await this.shopyyService.createOrderNote(this.site, orderId, { note, customer_note: true });

      return {
        success: true,
        order_id: orderId,
        shipment_id: `shipment_${orderId}_${Date.now()}`,
        tracking_number: data.tracking_number,
        shipping_provider: data.shipping_provider,
        shipped_at: new Date().toISOString()
      };
    } catch (error) {
      throw new Error(`发货失败: ${error.message}`);
    }
  }

  async cancelShipOrder(orderId: string | number, data: {
    reason?: string;
    shipment_id?: string;
  }): Promise<any> {
    // 取消订单发货
    try {
      // 将订单状态改回处理中
      await this.shopyyService.updateOrder(this.site, String(orderId), { 
        status: 'processing',
        meta_data: [
          { key: '_shipment_cancelled', value: 'yes' },
          { key: '_shipment_cancelled_reason', value: data.reason }
        ]
      });
      
      // 添加取消发货的备注
      const note = `订单发货已取消${data.reason ? `，原因：${data.reason}` : ''}`;
      await this.shopyyService.createOrderNote(this.site, orderId, { note, customer_note: true });

      return {
        success: true,
        order_id: orderId,
        shipment_id: data.shipment_id,
        reason: data.reason,
        cancelled_at: new Date().toISOString()
      };
    } catch (error) {
      throw new Error(`取消发货失败: ${error.message}`);
    }
  }

  async getSubscriptions(
    params: UnifiedSearchParamsDTO
  ): Promise<UnifiedPaginationDTO<UnifiedSubscriptionDTO>> {
    throw new Error('Shopyy does not support subscriptions.');
  }

  async getAllSubscriptions(params?: UnifiedSearchParamsDTO): Promise<UnifiedSubscriptionDTO[]> {
    // Shopyy getAllSubscriptions 暂未实现
    throw new Error('Shopyy getAllSubscriptions 暂未实现');
  }

  async getMedia(
    params: UnifiedSearchParamsDTO
  ): Promise<UnifiedPaginationDTO<UnifiedMediaDTO>> {
    const requestParams = this.mapMediaSearchParams(params);
    const { items, total, totalPages, page, per_page } = await this.shopyyService.fetchResourcePaged<any>(
      this.site,
      'media', // Shopyy的媒体API端点可能需要调整
      requestParams
    );
    return {
      items: items.map(this.mapMedia.bind(this)),
      total,
      totalPages,
      page,
      per_page,
    };
  }

  async getAllMedia(params?: UnifiedSearchParamsDTO): Promise<UnifiedMediaDTO[]> {
    // Shopyy getAllMedia 暂未实现
    throw new Error('Shopyy getAllMedia 暂未实现');
  }

  async createMedia(file: any): Promise<UnifiedMediaDTO> {
    const createdMedia = await this.shopyyService.createMedia(this.site, file);
    return this.mapMedia(createdMedia);
  }

  async updateMedia(id: string | number, data: any): Promise<UnifiedMediaDTO> {
    const updatedMedia = await this.shopyyService.updateMedia(this.site, id, data);
    return this.mapMedia(updatedMedia);
  }

  async deleteMedia(id: string | number): Promise<boolean> {
    return await this.shopyyService.deleteMedia(this.site, id);
  }

  async getReviews(
    params: UnifiedSearchParamsDTO
  ): Promise<UnifiedReviewPaginationDTO> {
    const requestParams = this.mapReviewSearchParams(params);
    const { items, total, totalPages, page, per_page } = await this.shopyyService.getReviews(
      this.site,
      requestParams
    );
    return {
      items: items.map(this.mapReview),
      total,
      totalPages,
      page,
      per_page,
    };
  }

  async getAllReviews(params?: UnifiedSearchParamsDTO): Promise<UnifiedReviewDTO[]> {
    // Shopyy getAllReviews 暂未实现
    throw new Error('Shopyy getAllReviews 暂未实现');
  }

  async getReview(id: string | number): Promise<UnifiedReviewDTO> {
    const review = await this.shopyyService.getReview(this.site, id);
    return this.mapReview(review);
  }

  private mapReview(review: any): UnifiedReviewDTO {
    // 将ShopYY评论数据映射到统一评论DTO格式
    return {
      id: review.id || review.review_id,
      product_id: review.product_id || review.goods_id,
      author: review.author_name || review.username || '',
      email: review.author_email || review.user_email || '',
      content: review.comment || review.content || '',
      rating: Number(review.score || review.rating || 0),
      status: String(review.status || 'approved'),
      date_created: 
        typeof review.created_at === 'number' 
          ? new Date(review.created_at * 1000).toISOString() 
          : String(review.created_at || review.date_added || '')
    };
  }

  private mapReviewSearchParams(params: UnifiedSearchParamsDTO): any {
    const { search, page, per_page, where } = params;
    const shopyyParams: any = {
      page: page || 1,
      limit: per_page || 10,
    };

    if (search) {
      shopyyParams.search = search;
    }

    if (where.status) {
      shopyyParams.status = where.status;
    }

    // if (product_id) {
    //   shopyyParams.product_id = product_id;
    // }

    return shopyyParams;
  }

  async createReview(data: any): Promise<UnifiedReviewDTO> {
    const createdReview = await this.shopyyService.createReview(this.site, data);
    return this.mapReview(createdReview);
  }

  async updateReview(id: string | number, data: any): Promise<UnifiedReviewDTO> {
    const updatedReview = await this.shopyyService.updateReview(this.site, id, data);
    return this.mapReview(updatedReview);
  }

  async deleteReview(id: string | number): Promise<boolean> {
    return await this.shopyyService.deleteReview(this.site, id);
  }

  // Webhook相关方法
  private mapWebhook(item: ShopyyWebhook): UnifiedWebhookDTO {
    return {
      id: item.id,
      name: item.webhook_name || `Webhook-${item.id}`,
      topic: item.event_code || '',
      delivery_url: item.url||  '',
      status: 'active',
    };
  }

  async getWebhooks(params: UnifiedSearchParamsDTO): Promise<UnifiedWebhookPaginationDTO> {
    const { items, total, totalPages, page, per_page } = await this.shopyyService.getWebhooks(this.site, params);
    return {
      items: items.map(this.mapWebhook),
      total,
      totalPages,
      page,
      per_page,
    };
  }

  async getAllWebhooks(params?: UnifiedSearchParamsDTO): Promise<UnifiedWebhookDTO[]> {
    // Shopyy getAllWebhooks 暂未实现
    throw new Error('Shopyy getAllWebhooks 暂未实现');
  }

  async getWebhook(id: string | number): Promise<UnifiedWebhookDTO> {
    const webhook = await this.shopyyService.getWebhook(this.site, id);
    return this.mapWebhook(webhook);
  }

  async createWebhook(data: CreateWebhookDTO): Promise<UnifiedWebhookDTO> {
    const createdWebhook = await this.shopyyService.createWebhook(this.site, data);
    return this.mapWebhook(createdWebhook);
  }

  async updateWebhook(id: string | number, data: UpdateWebhookDTO): Promise<UnifiedWebhookDTO> {
    const updatedWebhook = await this.shopyyService.updateWebhook(this.site, id, data);
    return this.mapWebhook(updatedWebhook);
  }

  async deleteWebhook(id: string | number): Promise<boolean> {
    return await this.shopyyService.deleteWebhook(this.site, id);
  }

  async getLinks(): Promise<Array<{title: string, url: string}>> {
    // ShopYY站点的管理后台链接通常基于apiUrl构建
    const url = this.site.websiteUrl
    // 提取基础域名，去掉可能的路径部分
    const baseUrl = url.replace(/\/api\/.*$/i, '');
    
    const links = [
      { title: '访问网站', url: baseUrl },
      { title: '管理后台', url: `${baseUrl}/admin/` },
      { title: '订单管理', url: `${baseUrl}/admin/orders.htm` },
      { title: '产品管理', url: `${baseUrl}/admin/products.htm` },
      { title: '客户管理', url: `${baseUrl}/admin/customers.htm` },
      { title: '插件管理', url: `${baseUrl}/admin/apps.htm` },
      { title: '店铺设置', url: `${baseUrl}/admin/settings.htm` },
      { title: '营销中心', url: `${baseUrl}/admin/marketing.htm` },
    ];
    return links;
  }

  async getCustomers(params: UnifiedSearchParamsDTO): Promise<UnifiedPaginationDTO<UnifiedCustomerDTO>> {
    const { items, total, totalPages, page, per_page } =
      await this.shopyyService.fetchCustomersPaged(this.site, params);
    return {
      items: items.map(this.mapCustomer.bind(this)),
      total,
      totalPages,
      page,
      per_page
    };
  }

  async getAllCustomers(params?: UnifiedSearchParamsDTO): Promise<UnifiedCustomerDTO[]> {
    // Shopyy getAllCustomers 暂未实现
    throw new Error('Shopyy getAllCustomers 暂未实现');
  }

  async getCustomer(id: string | number): Promise<UnifiedCustomerDTO> {
    const customer = await this.shopyyService.getCustomer(this.site, id);
    return this.mapCustomer(customer);
  }

  async createCustomer(data: Partial<UnifiedCustomerDTO>): Promise<UnifiedCustomerDTO> {
    const createdCustomer = await this.shopyyService.createCustomer(this.site, data);
    return this.mapCustomer(createdCustomer);
  }

  async updateCustomer(id: string | number, data: Partial<UnifiedCustomerDTO>): Promise<UnifiedCustomerDTO> {
    const updatedCustomer = await this.shopyyService.updateCustomer(this.site, id, data);
    return this.mapCustomer(updatedCustomer);
  }

  async deleteCustomer(id: string | number): Promise<boolean> {
    return await this.shopyyService.deleteCustomer(this.site, id);
  }
}