"use client";
import CategoryScroll from "@/app/[name]/(Main)/components/CategoryScroll";
import HomeSliderCarousel from "@/app/[name]/(Main)/components/HomeSliderCarousel";
import MenuFilterDrawer from "@/app/[name]/(Main)/components/MenuFilterDrawer";
import MenuSkeleton from "@/app/[name]/(Main)/components/MenuSkeleton";
import MenuSortingDrawer from "@/app/[name]/(Main)/components/MenuSortingDrawer";
import TextAlignIcon from "@/components/icons/TextAlignIcon";
import SearchBox from "@/components/input/SearchBox";
import MenuItem from "@/components/listview/MenuItem";
import MenuItemRenderer from "@/components/listview/MenuItemRenderer";
import VerticalScrollView from "@/components/listview/VerticalScrollView";
import useToggle from "@/hooks/helpers/useToggle";
import { glassSurfaceFlat } from "@/lib/styles/glassSurface";
import clsx from "clsx";
import { motion } from "framer-motion";
import { Candle2 } from "iconsax-react";
import { useQueryState } from "next-usequerystate";
import { useCallback, useEffect, useMemo, useRef, useState } from "react";
import { useTranslation } from "react-i18next";
import { useGetCategories, useGetFoods, useGetSliders } from "../hooks/useMenuData";
import type { Category, Food } from "../types/Types";

const sortings = ["PopularityDescending", "RateDescending", "PriceAscending", "PriceDescending"] as const;

const MenuIndex = () => {
  const { data: foodsData, isPending: foodsPending } = useGetFoods();
  const { data: categoriesData, isPending: categoriesPending } = useGetCategories();
  const { data: slidersData } = useGetSliders();
  const foods = useMemo<Food[]>(() => foodsData?.data || [], [foodsData?.data]);
  const categories = useMemo<Category[]>(() => categoriesData?.data || [], [categoriesData?.data]);
  const sliders = useMemo(() => slidersData?.data ?? [], [slidersData?.data]);

  const isLoading = foodsPending || categoriesPending;
  const { t: tCommon } = useTranslation("common");
  const { t: tMenu } = useTranslation("menu", { keyPrefix: "Menu" });
  const { state: filterModal, toggle: toggleFilterModal } = useToggle();
  const { state: sortingModal, toggle: toggleSortingModal } = useToggle();
  const [sorting, setSorting] = useQueryState("sortBy", { defaultValue: "0" });
  const [search, setSearch] = useQueryState("q", { defaultValue: "" });
  const [selectedCategory, setSelectedCategory] = useQueryState("category", {
    defaultValue: "0",
  });
  const [selectedIngredients, setSelectedIngredients] = useQueryState("ingredients", { defaultValue: "" });
  const [selectedDeliveryId, setSelectedDeliveryId] = useQueryState("delivery", { defaultValue: "0" });
  const smallCategoriesRef: React.RefObject<HTMLDivElement | null> = useRef(null);
  const wrapperRef: React.RefObject<HTMLDivElement | null> = useRef(null);
  const [smallCategoriesVisible, setSmallCategoriesVisibility] = useState(false);
  const [isInitialMount, setIsInitialMount] = useState(true);

  useEffect(() => {
    if (isInitialMount) {
      setSearch(null);
      setSelectedIngredients(null);
      setSelectedDeliveryId(null);
      setSorting(null);
      setIsInitialMount(false);
    }
  }, [isInitialMount, setSearch, setSelectedIngredients, setSelectedDeliveryId, setSorting]);

  useEffect(() => {
    if (categoriesData?.data && selectedCategory === "0") {
      setSelectedCategory(categoriesData?.data?.[0]?.id);
    }

    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [selectedCategory, categoriesData]);

  useEffect(() => {
    if (isLoading || !wrapperRef.current) return;

    const scrollContainer = wrapperRef.current.parentElement?.parentElement;
    if (!scrollContainer) return;

    const handleScroll = () => {
      if (!smallCategoriesRef.current) return;
      setSmallCategoriesVisibility(scrollContainer.scrollTop >= smallCategoriesRef.current.offsetTop);
    };

    scrollContainer.addEventListener("scroll", handleScroll, { passive: true });
    handleScroll();

    return () => {
      scrollContainer.removeEventListener("scroll", handleScroll);
    };
  }, [isLoading]);

  const updateSearch = useCallback(
    (e: React.ChangeEvent<HTMLInputElement>) => {
      setSearch(e.target.value);
    },
    [setSearch],
  );

  const updateCategory = useCallback(
    (categoryId: string) => {
      setSelectedCategory(categoryId);
    },
    [setSelectedCategory],
  );

  const sortingIndex = Number(sorting);
  const activeSortingIndex = Number.isNaN(sortingIndex) ? 0 : sortingIndex;
  const activeSortingKey = sortings[activeSortingIndex] ?? sortings[0];
  const activeSortingLabel = tMenu(`MenuSortingDrawer.Options.${activeSortingKey}`);

  const changeSorting = (index: number) => {
    setSorting(() => String(index));
    toggleSortingModal();
  };

  const changeSelectedIngredients = useCallback(
    (value: string) => {
      setSelectedIngredients(value);
    },
    [setSelectedIngredients],
  );

  const changeSelectedDelivery = useCallback(
    (value: string) => {
      setSelectedDeliveryId(() => value);
    },
    [setSelectedDeliveryId],
  );

  const filteredReceiptItems = useMemo(() => {
    if (!foods.length) return [];
    const lowerSearch = search.toLowerCase();
    const lowerIngredients = selectedIngredients ? selectedIngredients.toLowerCase() : "";
    const selectedCatId = selectedCategory === "0" ? null : selectedCategory;

    const filtered = foods.filter((item) => {
      const matchesCategory = !selectedCatId || item.category === selectedCatId;
      const itemName = item.title;
      const matchesSearch = !search || itemName.toLowerCase().includes(lowerSearch);

      const matchesIngredients =
        !selectedIngredients ||
        (() => {
          if (item.content && Array.isArray(item.content) && item.content.length > 0) {
            return item.content.some((content: string) => content.toLowerCase().includes(lowerIngredients));
          }
          return item.desc.toLowerCase().includes(lowerIngredients);
        })();

      const matchesDelivery = selectedDeliveryId === "0" || (selectedDeliveryId === "pickup" && item.pickupServe) || (selectedDeliveryId === "inPlace" && item.inPlaceServe);

      return matchesCategory && matchesSearch && matchesIngredients && matchesDelivery;
    });

    const sortingKey = sortings[Number(sorting)] || sortings[0];

    return [...filtered].sort((a, b) => {
      switch (sortingKey) {
        case "PopularityDescending":
        case "RateDescending":
          return 0;
        case "PriceAscending":
          return (a.price ?? 0) - (b.price ?? 0);
        case "PriceDescending":
          return (b.price ?? 0) - (a.price ?? 0);
        default:
          return 0;
      }
    });
  }, [selectedCategory, search, selectedIngredients, selectedDeliveryId, foods, sorting]);

  if (isLoading) {
    return (
      <div className="flex flex-col gap-4 items-center pt-5 mb-8">
        <HomeSliderCarousel sliders={sliders} />
        <MenuSkeleton embedded />
      </div>
    );
  }

  return (
    <div className="flex flex-col gap-4 items-center pt-5 mb-8" ref={wrapperRef}>
      <HomeSliderCarousel sliders={sliders} />
      <div className="w-full">
        <SearchBox value={search} placeholder={tCommon("SearchPlaceholder")} onChange={updateSearch} />
        <CategoryScroll categories={categories} selectedCategory={selectedCategory} onSelect={updateCategory} />
      </div>

      <section className="w-full">
        <div className="flex flex-wrap gap-2 items-center relative" ref={smallCategoriesRef}>
          <span className="sm:text-base text-sm font-medium max-w-28.25 sm:max-w-auto">{selectedCategory === "0" ? "" : categories.find((c) => c.id === selectedCategory)?.title || ""}</span>
          <div className="flex min-w-61.75 flex-1 gap-2 justify-end items-center">
            <button onClick={toggleFilterModal} className={glassSurfaceFlat("rounded-xl h-8 ps-4 pe-2 py-1.5 inline-flex items-center justify-between gap-1.75")}>
              <Candle2 className="stroke-foreground" size={16} />
              <span className="text-xs leading-5 font-medium whitespace-nowrap">{tMenu("MenuFilterDrawer.Label")}</span>
            </button>
            <button onClick={toggleSortingModal} className={glassSurfaceFlat("rounded-xl h-8 ps-4 pe-2 py-1.5 inline-flex items-center gap-2")}>
              <TextAlignIcon className="text-foreground" />
              <span className="text-xs leading-5 font-medium whitespace-nowrap">{activeSortingLabel}</span>
            </button>
          </div>
        </div>

        <motion.div
          initial={{
            y: smallCategoriesVisible ? 0 : -50,
            opacity: smallCategoriesVisible ? 1 : 0,
          }}
          animate={{
            y: smallCategoriesVisible ? 0 : -50,
            opacity: smallCategoriesVisible ? 1 : 0,
          }}
          transition={{ duration: 0.1 }}
          className={clsx(glassSurfaceFlat("fixed left-0 z-10 top-0 px-4 pt-16 right-0 xl:pr-72 xl:pt-20 border-x-0 border-t-0 rounded-none"), !smallCategoriesVisible && "pointer-events-none")}
        >
          <CategoryScroll categories={categories} selectedCategory={selectedCategory} onSelect={updateCategory} variant="small" />
        </motion.div>

        <VerticalScrollView className="mt-5! overflow-y-auto h-full">
          {filteredReceiptItems.length === 0 ? (
            <div className="text-center text-foreground/60 py-8">{foodsData ? "غذایی یافت نشد" : "در حال بارگذاری..."}</div>
          ) : (
            filteredReceiptItems.map((food) => (
              <MenuItemRenderer key={food.id}>
                <MenuItem food={food} />
              </MenuItemRenderer>
            ))
          )}
        </VerticalScrollView>
      </section>

      <MenuFilterDrawer
        visible={filterModal}
        onClose={toggleFilterModal}
        selectedIngredients={selectedIngredients}
        selectedDeliveryId={selectedDeliveryId}
        onIngredientsChange={changeSelectedIngredients}
        onDeliveryChange={changeSelectedDelivery}
        onApply={() => {}}
        tMenu={tMenu}
      />

      <MenuSortingDrawer visible={sortingModal} onClose={toggleSortingModal} sortings={sortings} activeIndex={activeSortingIndex} onSelect={changeSorting} tMenu={tMenu} />
    </div>
  );
};

export default MenuIndex;
