import { NextRequest } from "next/server";
import { searchItems, type ItemSort } from "@/lib/prisma/queries/items";
import { buildPublicItemImageUrl } from "@/lib/item-images";

function parseArray(param: string | null): string[] {
  if (!param) return [];
  return param
    .split(",")
    .map((value) => value.trim())
    .filter(Boolean);
}

const allowedSorts: ItemSort[] = [
  "name",
  "level-asc",
  "level-desc",
  "weight-asc",
  "weight-desc",
  "category",
  "updated-desc",
];

export async function GET(req: NextRequest) {
  try {
    const { searchParams } = new URL(req.url);
    const q = searchParams.get("q") || undefined;
    const categories = parseArray(searchParams.get("category"));
    const rarities = parseArray(searchParams.get("rarity"));
    const server = searchParams.get("server") || undefined;
    const sortParamRaw = (searchParams.get("sort") || "name").toLowerCase();
    const sortParam = (allowedSorts.find((sort) => sort === sortParamRaw) || "name") as ItemSort;
    const page = Number(searchParams.get("page") || "1");
    const pageSize = Number(searchParams.get("pageSize") || "24");

    const { items, total } = await searchItems({
      q,
      category: categories[0],
      rarity: rarities[0],
      server,
      sort: sortParam,
      page,
      pageSize,
    });

    const itemsWithImage = items.map((item) => {
      const img = (item.image_url || item.image_local_path || "").toString();
      if (/^https?:\/\//i.test(img)) {
        return { ...item, image_url: img, image: img };
      }
      if (img.startsWith("data/")) {
        return { ...item, image_url: img, image: `/api/images?path=${encodeURIComponent(img)}` };
      }
      const category = item.category || "other";
      return {
        ...item,
        image_url: item.image_url,
        image: buildPublicItemImageUrl(category, img),
      };
    });

    const totalPages = Math.max(1, Math.ceil(total / Math.max(1, pageSize)));
    return Response.json(
      { items: itemsWithImage, page, pageSize, total, totalPages, sort: sortParam },
      { status: 200 }
    );
  } catch (error: any) {
    console.error("[api/items] Erro:", error?.message, error?.stack);
    return Response.json(
      {
        error: "Falha ao consultar itens",
        message: error?.message || "Erro desconhecido",
      },
      { status: 500 }
    );
  }
}