import { apiFetch } from './client';
import { API_ENDPOINTS } from './config';
import { catalogService, ProductResponse, CategoryResponse, BrandResponse, DeviceModelResponse, ServiceTypeResponse, MOCK_PRODUCTS, MOCK_CATEGORIES, MOCK_BRANDS, MOCK_DEVICE_MODELS, MOCK_SERVICE_TYPES } from './catalogService';
import { mapProductCardToProductResponse } from '@/utils/productMapper';

export interface LiveSearchResult {
  products: ProductResponse[];
  categories: CategoryResponse[];
  brands: BrandResponse[];
  services: ServiceTypeResponse[];
}

export interface BannerItem {
  id: string;
  title: string;
  subtitle: string;
  discount_tag: string;
  image_url: string;
  cta_text: string;
  cta_link: string;
}

export interface ProductReview {
  review_id: string;
  product_id: string;
  author_name: string;
  rating: number;
  verified_buyer: boolean;
  review_date: string;
  title: string;
  comment: string;
}

export interface TrustBadge {
  id: string;
  title: string;
  subtitle: string;
  icon: string;
}

export interface BlogPost {
  post_id: string;
  title: string;
  excerpt: string;
  author: string;
  date: string;
  image_url: string;
}

export interface FooterInfo {
  phone: string;
  email: string;
  address: string;
  copyright: string;
  // Legacy format (StorefrontRouter static stubs) — kept for backwards compatibility
  get_to_know_us?: { label: string; href: string }[];
  information?: { label: string; href: string }[];
  orders_returns?: { label: string; href: string }[];
  our_store?: { label: string; href: string }[];
  // New CMS format (dynamic columns)
  social_links?: { platform: string; url: string; icon?: string }[];
  columns?: { title: string; links: { label: string; href: string }[] }[];
  payment_methods?: { name: string; icon_url?: string }[];
}

export interface StorefrontSettings {
  store_name?: string;
  logo_url?: string;
  primary_wordmark_url?: string;
  secondary_wordmark_url?: string;
  favicon_url?: string;
  support_phone?: string;
  currency_code?: string;
  advance_percent?: number;
  theme_color?: string;
  [key: string]: unknown;
}

export type MegaMenuBadge = 'new' | 'hot' | 'trending' | 'featured';

export interface MegaMenuLink {
  label: string;
  href: string;
  badge?: MegaMenuBadge | string | null;
  accent?: boolean;
}

export interface MegaMenuData {
  nav_key: string;
  groups: { title: string; links: MegaMenuLink[] }[];
  promo?: { image_url?: string; badge?: string; title?: string; href?: string } | null;
  featured_category_ids?: string[];
  /** Product slugs for Top Rated (deals) and Featured Products (products). */
  featured_product_ids?: string[];
}

export interface AllMegaMenus {
  shop?: MegaMenuData;
  deals?: MegaMenuData;
  products?: MegaMenuData;
}

/** Product slugs saved on deals (Top Rated) and products (Featured) mega menus. */
export function getMegaMenuProductSlugs(menu?: MegaMenuData | null): string[] {
  if (!menu) return [];
  const dedicated = (menu.featured_product_ids || []).map(String).filter(Boolean);
  if (dedicated.length) return dedicated;
  if (menu.nav_key === 'shop') return [];
  return (menu.featured_category_ids || []).map(String).filter(Boolean);
}

export interface CatalogFiltersData {
  highlights: { label: string; value: string; icon?: string }[];
  price_ranges: { label: string; min?: number | null; max?: number | null }[];
}

export const storefrontService = {
  async getLiveSearch(query: string, category?: string): Promise<LiveSearchResult> {
    if (!query || query.trim().length < 2) {
      return { products: [], categories: [], brands: [], services: [] };
    }

    try {
      return await apiFetch<LiveSearchResult>(API_ENDPOINTS.STOREFRONT_LIVE_SEARCH(query.trim(), category));
    } catch {
      try {
        const res = await catalogService.getProductsPaginated({
          search: query.trim(),
          limit: 8,
          category: category && category !== 'all' ? category : undefined,
        });
        return {
          products: res.products.map((p) => mapProductCardToProductResponse(p)),
          categories: [],
          brands: [],
          services: [],
        };
      } catch {
        return { products: [], categories: [], brands: [], services: [] };
      }
    }
  },

  async getBanners(): Promise<BannerItem[]> {
    try {
      return await apiFetch<BannerItem[]>(API_ENDPOINTS.STOREFRONT_BANNERS);
    } catch {
      return MOCK_BANNERS;
    }
  },

  async getReviews(productId: string): Promise<ProductReview[]> {
    try {
      return await apiFetch<ProductReview[]>(`/api/v1/storefront/reviews/${productId}`);
    } catch {
      return MOCK_REVIEWS;
    }
  },

  async getTrustBadges(): Promise<TrustBadge[]> {
    try {
      return await apiFetch<TrustBadge[]>('/api/v1/storefront/trust-badges');
    } catch {
      return MOCK_TRUST_BADGES;
    }
  },

  async getBlogPosts(): Promise<BlogPost[]> {
    try {
      return await apiFetch<BlogPost[]>('/api/v1/storefront/blog-posts');
    } catch {
      return MOCK_BLOG_POSTS;
    }
  },

  async getFooterInfo(): Promise<FooterInfo> {
    try {
      return await apiFetch<FooterInfo>('/api/v1/storefront/footer-info');
    } catch {
      return MOCK_FOOTER_INFO;
    }
  },

  async getSettings(): Promise<StorefrontSettings> {
    try {
      return await apiFetch<StorefrontSettings>('/api/v1/storefront/settings');
    } catch {
      return { store_name: 'iFixKart', currency_code: 'INR', advance_percent: 20 };
    }
  },

  async getMegaMenu(): Promise<AllMegaMenus> {
    try {
      return await apiFetch<AllMegaMenus>('/api/v1/storefront/mega-menu');
    } catch {
      return {};
    }
  },

  async getFaqLayout(): Promise<unknown> {
    try {
      return await apiFetch<unknown>('/api/v1/storefront/layout/faq');
    } catch {
      return [];
    }
  },

  async getCatalogFilters(): Promise<CatalogFiltersData> {
    try {
      return await apiFetch<CatalogFiltersData>('/api/v1/storefront/catalog-filters');
    } catch {
      return {
        highlights: [
          { label: 'Sale', value: 'sale', icon: 'tag' },
          { label: 'Trending', value: 'trending', icon: 'trending-up' },
          { label: 'New Arrivals', value: 'new', icon: 'sparkles' },
        ],
        price_ranges: [
          { label: 'Under ₹500', min: null, max: 500 },
          { label: '₹500 – ₹1,000', min: 500, max: 1000 },
          { label: '₹1,000 – ₹5,000', min: 1000, max: 5000 },
          { label: '₹5,000 – ₹15,000', min: 5000, max: 15000 },
          { label: 'Above ₹15,000', min: 15000, max: null },
        ],
      };
    }
  },
};


export const MOCK_BANNERS: BannerItem[] = [
  {
    id: 'b1',
    title: 'Next-Gen Tech & Electronics',
    subtitle: 'Up to 40% Off on Top Smartphones, Laptops & Wearables',
    discount_tag: 'SUMMER TECH SALE 2026',
    image_url: 'https://images.unsplash.com/photo-1511707171634-5f897ff02aa9?w=1200',
    cta_text: 'Shop Now',
    cta_link: '/products',
  },
];

export const MOCK_REVIEWS: ProductReview[] = [
  {
    review_id: 'rev_01',
    product_id: 'p1',
    author_name: 'Alex Morgan',
    rating: 5,
    verified_buyer: true,
    review_date: '2026-07-20',
    title: 'Exceptional Quality!',
    comment: 'Exceptional build quality and super-fast delivery! Highly recommended.',
  },
];

export const MOCK_TRUST_BADGES: TrustBadge[] = [
  { id: 'tb1', title: 'Free Shipping', subtitle: 'On order over $100', icon: 'truck' },
  { id: 'tb2', title: 'Flexible & Easy Return', subtitle: 'Return within 14 days', icon: 'refresh' },
  { id: 'tb3', title: '24/7 Support Services', subtitle: 'Any Time Customer Support', icon: 'headset' },
  { id: 'tb4', title: 'Secure payment', subtitle: '100% Fast & Secure Payment', icon: 'shield' },
];

export const MOCK_BLOG_POSTS: BlogPost[] = [
  {
    post_id: 'bp1',
    title: 'How to Write a Blog Post Your Readers Will Love in 5 Steps',
    excerpt: 'Why the world would end without travel coupons. The 16 worst...',
    author: 'Admin',
    date: 'July 24, 2026',
    image_url: 'https://images.unsplash.com/photo-1511707171634-5f897ff02aa9?w=500',
  },
];

export const MOCK_FOOTER_INFO: FooterInfo = {
  phone: '+91 98765 43210',
  email: 'support@ifixkart.com',
  address: 'iFixKart Electronics & OEM Repair Hub, India',
  copyright: '© 2026 iFixKart Commerce & Service Platform. All rights reserved.',
  get_to_know_us: [
    { label: 'About Us', href: '/about' },
    { label: 'Term & Policy', href: '/terms' },
    { label: 'Careers', href: '/careers' },
    { label: 'News & Blog', href: '/blog' },
    { label: 'Contact Us', href: '/contact' },
  ],
  information: [
    { label: 'Help Center', href: '/help' },
    { label: 'Feedback', href: '/feedback' },
    { label: 'FAQs', href: '/faqs' },
    { label: 'Size Guide', href: '/size-guide' },
    { label: 'Payments', href: '/payments' },
  ],
  orders_returns: [
    { label: 'Track Order', href: '/account' },
    { label: 'Delivery', href: '/delivery' },
    { label: 'Services', href: '/services' },
    { label: 'Returns', href: '/returns' },
    { label: 'Exchange', href: '/exchange' },
  ],
  our_store: [
    { label: 'Affiliate', href: '/affiliate' },
    { label: 'Best Seller', href: '/products?sort=best-sellers' },
    { label: 'New Products', href: '/products?sort=newest' },
    { label: 'On Sale', href: '/products?on_sale=true' },
    { label: 'Featured', href: '/products?featured=true' },
  ],
};