"use client";

import { useEffect, useMemo, useRef, useState } from "react";
import { MarketplaceFilters } from "@/components/marketplace-filters";
import { ItemCard } from "@/components/item-card";

interface Item {
  id: string | number;
  name: string;
  category: string;
  image?: string;
  rarity?: string;
  npcPrice?: number;
  price?: { buy: number; sell: number };
  priceHistory?: { highest: number; lowest: number; average: number };
  level?: number;
  weight?: number;
  slots?: number;
  skill?: string;
}

interface InitialData {
  items: Item[];
  total: number;
  page: number;
  pageSize: number;
  totalPages: number;
}

export default function LibraryClient({ initial }: { initial: InitialData }) {
  const [items, setItems] = useState<Item[]>(initial.items);
  const [total, setTotal] = useState<number>(initial.total);
  const [page, setPage] = useState<number>(initial.page || 1);
  const [pageSize] = useState<number>(initial.pageSize || 24);
  const [totalPages, setTotalPages] = useState<number>(initial.totalPages || 1);

  const [query, setQuery] = useState<string>("");
  const [categories, setCategories] = useState<string[]>([]);
  const [rarities, setRarities] = useState<string[]>([]);
  const [sort, setSort] = useState<string>("name");
  const [categoryOptions, setCategoryOptions] = useState<{ value: string; label: string }[] | undefined>(undefined);
  const [vocation, setVocation] = useState<string | null>(null);

  const debounceRef = useRef<number | undefined>(undefined);

  const searchParams = useMemo(() => {
    const p = new URLSearchParams();
    if (query) p.set("q", query);
    if (categories.length > 0) p.set("category", categories.join(","));
    if (rarities.length > 0) p.set("rarity", rarities.join(","));
    if (sort) p.set("sort", sort);
    if (vocation) p.set("voc", vocation);
    p.set("page", String(page));
    p.set("pageSize", String(pageSize));
    return p;
  }, [query, categories, rarities, sort, page, pageSize, vocation]);

  useEffect(() => {
    // Debounce para evitar chamadas excessivas
    window.clearTimeout(debounceRef.current);
    debounceRef.current = window.setTimeout(async () => {
      const res = await fetch(`/api/items?${searchParams.toString()}`);
      if (!res.ok) return;
      const data = await res.json();
      setItems(data.items);
      setTotal(data.total);
      setTotalPages(data.totalPages);
    }, 250);
    return () => window.clearTimeout(debounceRef.current);
  }, [searchParams]);

  // Carregar categorias dinâmicas a partir das tabelas do banco
  useEffect(() => {
    (async () => {
      try {
        const res = await fetch("/api/items/categories");
        if (!res.ok) return;
        const data = await res.json();
        if (Array.isArray(data.categories)) {
          const opts = (data.categories as string[]).map((c) => ({ value: c, label: c.charAt(0).toUpperCase() + c.slice(1) }));
          setCategoryOptions(opts);
        }
      } catch {
        // no-op
      }
    })();
  }, []);

  const onSearch = (q: string) => {
    setPage(1);
    setQuery(q);
  };
  const onFilter = (f: { rarity: string[]; category: string[]; priceRange?: { min: number; max: number }; vocation?: string | null }) => {
    setPage(1);
    setCategories(f.category || []);
    setRarities(f.rarity || []);
    setVocation(f.vocation ?? null);
  };
  const onSort = (s: string) => {
    setPage(1);
    setSort(s);
  };

  return (
    <div className="space-y-8">
      <MarketplaceFilters onSearch={onSearch} onFilter={onFilter} onSort={onSort} totalItems={total} showRarity={false} categoryOptionsOverride={categoryOptions} />

      <section className="grid gap-6 grid-cols-2 sm:grid-cols-3 lg:grid-cols-4 xl:grid-cols-6 grid-flow-row-dense">
        {items.map((item) => {
          const anyItem = item as any;
          // Normalização de categoria para os ícones do ItemCard
          const normalizeCategory = (c: string | undefined): string => {
            const v = (c || "").toLowerCase();
            const map: Record<string, string> = {
              escudos: "shield",
              armaduras: "armor",
              capacetes: "helmet",
              calcas: "legs",
              botas: "boots",
              amuletos: "amulet",
              aneis: "ring",
              runas: "rune",
              ferramentas: "tool",
              municao: "ammunition",
              aljavas: "ammunition",
              distancia: "weapon",
              espadas: "weapon",
              machados: "weapon",
              clavas: "weapon",
              punhos: "weapon",
              wands: "weapon",
              rods: "weapon",
              spellbooks: "other",
              chaves: "other",
              comidas: "other",
              decoracoes: "other",
              liquidos: "other",
              plantas: "other",
              recipientes: "other",
              trofeus: "other",
            };
            return map[v] || v || "other";
          };

          const categoryPt = typeof anyItem.categoria === "string" ? anyItem.categoria : undefined;
          const category = normalizeCategory(item.category ?? categoryPt);
          const name = item.name ?? anyItem.nome ?? String(item.id);
          const image = item.image ?? anyItem.image_url ?? "";

          // Campos numéricos normalizados
          const level: number | undefined =
            typeof item.level === "number"
              ? item.level
              : typeof anyItem.nivel === "number"
              ? anyItem.nivel
              : typeof anyItem.lvl === "number"
              ? anyItem.lvl
              : undefined;

          const weight: number | undefined =
            typeof item.weight === "number"
              ? item.weight
              : typeof anyItem.peso === "number"
              ? anyItem.peso
              : typeof anyItem.peso_em_oz === "number"
              ? anyItem.peso_em_oz
              : undefined;

          const slots: number | undefined =
            typeof item.slots === "number"
              ? item.slots
              : typeof anyItem.slots === "number"
              ? anyItem.slots
              : undefined;

          const attack: number | undefined =
            typeof anyItem.ataque === "number"
              ? anyItem.ataque
              : typeof anyItem.atq === "number"
              ? anyItem.atq
              : undefined;
          const defense: number | undefined =
            typeof anyItem.defesa === "number"
              ? anyItem.defesa
              : typeof anyItem.def === "number"
              ? anyItem.def
              : undefined;
          const armor: number | undefined =
            typeof anyItem.arm === "number" ? anyItem.arm : undefined;

          // Skill/requisito para usar
          const skill: string | undefined =
            typeof item.skill === "string" && item.skill !== "Nenhum."
              ? item.skill
              : typeof anyItem.skill_para_usar === "string" && anyItem.skill_para_usar !== "Nenhum."
              ? anyItem.skill_para_usar
              : undefined;
          const vocation: string | undefined =
            typeof anyItem.voc === "string" && anyItem.voc
              ? anyItem.voc
              : undefined;

          return (
            <ItemCard
              key={`${String((anyItem as any).category)}::${String(item.id)}::${name}`}
              item={{
                id: String(item.id),
                name,
                image,
                category: category as any,
                rarity: (item.rarity as any) ?? "common",
                categoryPt,
                stats: {
                  weight,
                  slots,
                  attack,
                  defense,
                  armor,
                } as any,
                requirements: {
                  level,
                  skill,
                  vocation,
                } as any,
                // Campos específicos de aljavas (e reutilizáveis para outras categorias)
                volume: typeof anyItem.volume === "number" ? anyItem.volume : undefined,
                bonus_de_skill: typeof anyItem.bonus_de_skill === "number" ? anyItem.bonus_de_skill : undefined,
                protecao: typeof anyItem.protecao === "string" ? anyItem.protecao : undefined,
                dropa_de: typeof anyItem.dropa_de === "string" ? anyItem.dropa_de : undefined,
              } as any}
              mode="catalog"
            />
          );
        })}
      </section>

      <div className="flex items-center justify-center gap-2">
        <button
          className="px-3 py-1 rounded border text-sm hover:bg-muted disabled:opacity-50"
          onClick={() => setPage((p) => Math.max(1, p - 1))}
          disabled={page <= 1}
        >
          Anterior
        </button>
        <span className="text-sm text-muted-foreground">Página {page} de {totalPages}</span>
        <button
          className="px-3 py-1 rounded border text-sm hover:bg-muted disabled:opacity-50"
          onClick={() => setPage((p) => Math.min(totalPages, p + 1))}
          disabled={page >= totalPages}
        >
          Próxima
        </button>
      </div>
    </div>
  );
}