import { ISiteAdapter } from '../interface/site-adapter.interface';
import { WPService } from '../service/wp.service';
import {
  UnifiedMediaDTO,
  UnifiedOrderDTO,
  UnifiedPaginationDTO,
  UnifiedProductDTO,
  UnifiedSearchParamsDTO,
  UnifiedSubscriptionDTO,
  UnifiedCustomerDTO,
} from '../dto/site-api.dto';

export class WooCommerceAdapter implements ISiteAdapter {
  constructor(private site: any, private wpService: WPService) {}

  private mapProduct(item: any): UnifiedProductDTO {
    return {
      id: item.id,
      name: item.name,
      type: item.type,
      status: item.status,
      sku: item.sku,
      regular_price: item.regular_price,
      sale_price: item.sale_price,
      price: item.price,
      stock_status: item.stock_status,
      stock_quantity: item.stock_quantity,
      images: (item.images || []).map((img: any) => ({
        id: img.id,
        src: img.src,
        name: img.name,
        alt: img.alt,
      })),
      attributes: item.attributes,
      variations: item.variations,
      date_created: item.date_created,
      date_modified: item.date_modified,
      raw: item,
    };
  }

  private mapOrder(item: any): UnifiedOrderDTO {
    const formatAddress = (addr: any) => {
      if (!addr) return '';
      const name = addr.fullname || `${addr.first_name || ''} ${addr.last_name || ''}`.trim();
      return [
        name,
        addr.company,
        addr.address_1,
        addr.address_2,
        addr.city,
        addr.state,
        addr.postcode,
        addr.country,
        addr.phone
      ].filter(Boolean).join(', ');
    };

    return {
      id: item.id,
      number: item.number,
      status: item.status,
      currency: item.currency,
      total: item.total,
      customer_id: item.customer_id,
      customer_name: `${item.billing?.first_name || ''} ${
        item.billing?.last_name || ''
      }`.trim(),
      email: item.billing?.email || '',
      line_items: item.line_items,
      sales: (item.line_items || []).map((li: any) => ({
        ...li,
        productId: li.product_id,
        // Ensure other fields match frontend expectation if needed
      })),
      billing: item.billing,
      shipping: item.shipping,
      billing_full_address: formatAddress(item.billing),
      shipping_full_address: formatAddress(item.shipping),
      payment_method: item.payment_method_title,
      date_created: item.date_created,
      raw: item,
    };
  }

  private mapSubscription(item: any): UnifiedSubscriptionDTO {
    return {
      id: item.id,
      status: item.status,
      customer_id: item.customer_id,
      billing_period: item.billing_period,
      billing_interval: item.billing_interval,
      start_date: item.start_date,
      next_payment_date: item.next_payment_date,
      line_items: item.line_items,
      raw: item,
    };
  }

  private mapMedia(item: any): UnifiedMediaDTO {
    return {
      id: item.id,
      title: item.title?.rendered || '',
      media_type: item.media_type,
      mime_type: item.mime_type,
      source_url: item.source_url,
      date_created: item.date_created,
    };
  }

  async getProducts(
    params: UnifiedSearchParamsDTO
  ): Promise<UnifiedPaginationDTO<UnifiedProductDTO>> {
    const { items, total, totalPages, page, per_page } =
      await this.wpService.fetchResourcePaged<any>(
        this.site,
        'products',
        params
      );
    return {
      items: items.map(this.mapProduct),
      total,
      totalPages,
      page,
      per_page,
    };
  }

  async getProduct(id: string | number): Promise<UnifiedProductDTO> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    const res = await api.get(`products/${id}`);
    return this.mapProduct(res.data);
  }

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

  async updateProduct(id: string | number, data: Partial<UnifiedProductDTO>): Promise<UnifiedProductDTO> {
    const res = await this.wpService.updateProduct(this.site, String(id), data as any);
    return this.mapProduct(res);
  }

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

  async getOrderNotes(orderId: string | number): Promise<any[]> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    const res = await api.get(`orders/${orderId}/notes`);
    return res.data;
  }

  async createOrderNote(orderId: string | number, data: any): Promise<any> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    const res = await api.post(`orders/${orderId}/notes`, data);
    return res.data;
  }

  async deleteProduct(id: string | number): Promise<boolean> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    try {
      await api.delete(`products/${id}`, { force: true });
      return true;
    } catch (e) {
      return false;
    }
  }

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

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

  async getOrder(id: string | number): Promise<UnifiedOrderDTO> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    const res = await api.get(`orders/${id}`);
    return this.mapOrder(res.data);
  }

  async createOrder(data: Partial<UnifiedOrderDTO>): Promise<UnifiedOrderDTO> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    const res = await api.post('orders', data);
    return this.mapOrder(res.data);
  }

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

  async deleteOrder(id: string | number): Promise<boolean> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    await api.delete(`orders/${id}`, { force: true });
    return true;
  }

  async getSubscriptions(
    params: UnifiedSearchParamsDTO
  ): Promise<UnifiedPaginationDTO<UnifiedSubscriptionDTO>> {
    const { items, total, totalPages, page, per_page } =
      await this.wpService.fetchResourcePaged<any>(
        this.site,
        'subscriptions',
        params
      );
    return {
      items: items.map(this.mapSubscription),
      total,
      totalPages,
      page,
      per_page,
    };
  }

  async getMedia(
    params: UnifiedSearchParamsDTO
  ): Promise<UnifiedPaginationDTO<UnifiedMediaDTO>> {
    const { items, total, totalPages } = await this.wpService.getMedia(
      this.site.id,
      params.page || 1,
      params.per_page || 20
    );
    return {
      items: items.map(this.mapMedia),
      total,
      totalPages,
      page: params.page || 1,
      per_page: params.per_page || 20,
    };
  }

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

  async updateMedia(id: string | number, data: any): Promise<any> {
    return await this.wpService.updateMedia(Number(this.site.id), Number(id), data);
  }

  private mapCustomer(item: any): UnifiedCustomerDTO {
    return {
      id: item.id,
      email: item.email,
      first_name: item.first_name,
      last_name: item.last_name,
      username: item.username,
      phone: item.billing?.phone || item.shipping?.phone,
      billing: item.billing,
      shipping: item.shipping,
      raw: item,
    };
  }

  async getCustomers(params: UnifiedSearchParamsDTO): Promise<UnifiedPaginationDTO<UnifiedCustomerDTO>> {
    const { items, total, totalPages, page, per_page } = await this.wpService.fetchResourcePaged<any>(
      this.site,
      'customers',
      params
    );
    return {
      items: items.map((i: any) => this.mapCustomer(i)),
      total,
      totalPages,
      page,
      per_page,
    };
  }

  async getCustomer(id: string | number): Promise<UnifiedCustomerDTO> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    const res = await api.get(`customers/${id}`);
    return this.mapCustomer(res.data);
  }

  async createCustomer(data: Partial<UnifiedCustomerDTO>): Promise<UnifiedCustomerDTO> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    const res = await api.post('customers', data);
    return this.mapCustomer(res.data);
  }

  async updateCustomer(id: string | number, data: Partial<UnifiedCustomerDTO>): Promise<UnifiedCustomerDTO> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    const res = await api.put(`customers/${id}`, data);
    return this.mapCustomer(res.data);
  }

  async deleteCustomer(id: string | number): Promise<boolean> {
    const api = (this.wpService as any).createApi(this.site, 'wc/v3');
    await api.delete(`customers/${id}`, { force: true });
    return true;
  }
}