import { useQuery, useInfiniteQuery } from "@tanstack/react-query";
import { useAuthToken } from "../hooks/use-root-data";
import { createHomepageApi } from "~/utils/api-client-factory";

// Home query keys
export const homeKeys = {
  all: ["home"] as const,
  banners: () => [...homeKeys.all, "banners"] as const,
  categories: () => [...homeKeys.all, "categories"] as const,
  discounts: () => [...homeKeys.all, "discounts"] as const,
  forYou: () => [...homeKeys.all, "forYou"] as const,
  topSellers: () => [...homeKeys.all, "topSellers"] as const,
  sellerTiles: () => [...homeKeys.all, "sellerTiles"] as const,
  sellerTilesAll: () => [...homeKeys.all, "sellerTilesAll"] as const,
};

/**
 * Hook for fetching home page banners
 * @returns Query result with home page banners
 */
export function useGetHomeBanners() {
  const token = useAuthToken();

  return useQuery({
    queryKey: homeKeys.banners(),
    queryFn: async () => {
      try {
        console.log("[Home Hooks] Fetching banners - Token:", !!token);
        const homeApi = createHomepageApi(token);
        console.log("[Home Hooks] HomepageApi created, making API call...");
        const result = await homeApi.apiHomeV1BannersList();
        console.log("[Home Hooks] Banners fetched successfully:", result);
        return result;
      } catch (error) {
        console.error("Error fetching home banners:", error);
        throw error;
      }
    },
    staleTime: 5 * 60 * 1000, // 5 minutes cache
    refetchOnWindowFocus: false,
  });
}

/**
 * Hook for fetching home page discounts with cursor pagination
 * @returns Infinite query result with home page discounts
 */
export function useGetHomeDiscounts() {
  const token = useAuthToken();

  return useInfiniteQuery({
    queryKey: homeKeys.discounts(),
    queryFn: async ({ pageParam }) => {
      try {
        const homeApi = createHomepageApi(token);
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        const result = await homeApi.apiHomeV1DiscountsList({
          cursor: pageParam,
          pageSize: 20,
        });
        // API returns { next, previous, results } but type says Array
        // Return the whole response to access 'next' in getNextPageParam
        return result;
      } catch (error) {
        console.error("Error fetching home discounts:", error);
        throw error;
      }
    },
    initialPageParam: undefined as string | undefined,
    getNextPageParam: (lastPage) => {
      // Extract cursor from next URL
      if (lastPage?.next) {
        const url = new URL(lastPage.next);
        return url.searchParams.get("cursor");
      }
      return undefined;
    },
    staleTime: 60 * 1000, // 60s — prices/discounts must stay reasonably fresh
    refetchOnWindowFocus: false,
  });
}

/**
 * Hook for fetching home page "For You" products with infinite scroll
 * @returns Infinite query result with personalized products
 */
export function useGetHomeForYou() {
  const token = useAuthToken();

  return useInfiniteQuery({
    queryKey: homeKeys.forYou(),
    queryFn: async ({ pageParam }) => {
      try {
        const homeApi = createHomepageApi(token);
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        const result = await homeApi.apiHomeV1ForYouList({
          cursor: pageParam,
          pageSize: 20,
        });
        // API returns { next, previous, results } but type says Array
        // Return the whole response to access 'next' in getNextPageParam
        return result;
      } catch (error) {
        console.error("Error fetching home 'For You' products:", error);
        throw error;
      }
    },
    initialPageParam: undefined as string | undefined,
    getNextPageParam: (lastPage) => {
      // Extract cursor from next URL
      if (lastPage?.next) {
        const url = new URL(lastPage.next);
        return url.searchParams.get("cursor");
      }
      return undefined;
    },
    staleTime: 60 * 1000, // 60s — prices/discounts must stay reasonably fresh
    refetchOnWindowFocus: false,
  });
}

/**
 * Hook for fetching home page top sellers with cursor pagination
 * @returns Infinite query result with top selling products
 */
export function useGetHomeTopSellers() {
  const token = useAuthToken();

  return useInfiniteQuery({
    queryKey: homeKeys.topSellers(),
    queryFn: async ({ pageParam }) => {
      try {
        const homeApi = createHomepageApi(token);
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        const result = await homeApi.apiHomeV1TopSellersList({
          cursor: pageParam,
          pageSize: 20,
        });
        // API returns { next, previous, results } but type says Array
        // Return the whole response to access 'next' in getNextPageParam
        return result;
      } catch (error) {
        console.error("Error fetching home top sellers:", error);
        throw error;
      }
    },
    initialPageParam: undefined as string | undefined,
    getNextPageParam: (lastPage) => {
      // Extract cursor from next URL
      if (lastPage?.next) {
        const url = new URL(lastPage.next);
        return url.searchParams.get("cursor");
      }
      return undefined;
    },
    staleTime: 60 * 1000, // 60s — prices/discounts must stay reasonably fresh
    refetchOnWindowFocus: false,
  });
}

/**
 * Hook for fetching home page categories
 * @returns Query result with home page categories
 */
export function useGetHomeCategories() {
  const token = useAuthToken();

  return useQuery({
    queryKey: homeKeys.categories(),
    queryFn: async () => {
      try {
        const homeApi = createHomepageApi(token);
        return await homeApi.apiHomeV1CategoriesList();
      } catch (error) {
        console.error("Error fetching home categories:", error);
        throw error;
      }
    },
    staleTime: 20 * 60 * 1000, // 5 minutes cache
    refetchOnWindowFocus: false,
  });
}

/**
 * Hook for fetching top 4 seller tiles for homepage
 * @returns Query result with seller tiles
 */
export function useGetHomeSellerTiles() {
  const token = useAuthToken();

  return useQuery({
    queryKey: homeKeys.sellerTiles(),
    queryFn: async () => {
      try {
        const homeApi = createHomepageApi(token);
        return await homeApi.apiHomeV1SellerTilesList();
      } catch (error) {
        console.error("Error fetching home seller tiles:", error);
        throw error;
      }
    },
    staleTime: 5 * 60 * 1000,
    refetchOnWindowFocus: false,
  });
}

/**
 * Hook for fetching all seller tiles for 'See more' page
 * @returns Query result with all seller tiles
 */
export function useGetAllSellerTiles() {
  const token = useAuthToken();

  return useQuery({
    queryKey: homeKeys.sellerTilesAll(),
    queryFn: async () => {
      try {
        const homeApi = createHomepageApi(token);
        return await homeApi.apiHomeV1SellerTilesAllList();
      } catch (error) {
        console.error("Error fetching all seller tiles:", error);
        throw error;
      }
    },
    staleTime: 5 * 60 * 1000,
    refetchOnWindowFocus: false,
  });
}