/**
 * Queries de itens usando Prisma
 * Busca itens da tabela unificada items (PostgreSQL)
 */

import { prisma } from "../app";
import { Prisma } from "@prisma/client";

export interface Item {
  item_id: number;
  source_table_id: number;
  source_table_name: string;
  item_name: string;
  category: string;
  image_local_path: string | null;
  image_url: string | null;
  rarity: string | null;
  level: number | null;
  weight: number | null;
  slots: number | null;
  skill: string | null;
  metadata: any;
  created_at: Date;
  updated_at: Date;
}

export interface SearchItemsParams {
  q?: string;
  category?: string;
  rarity?: string;
  page?: number;
  pageSize?: number;
}

/**
 * Busca um item por ID unificado
 */
export async function getItemById(itemId: number): Promise<Item | null> {
  const item = await prisma.item.findUnique({
    where: { item_id: itemId },
  });

  if (!item) {
    return null;
  }

  return {
    ...item,
    weight: item.weight ? Number(item.weight) : null,
    metadata: item.metadata || {},
  } as Item;
}

/**
 * Busca um item por nome (exato ou similar)
 */
export async function getItemByName(itemName: string): Promise<Item | null> {
  const item = await prisma.item.findFirst({
    where: {
      item_name: {
        equals: itemName,
        mode: "insensitive",
      },
    },
  });

  if (!item) {
    return null;
  }

  return {
    ...item,
    weight: item.weight ? Number(item.weight) : null,
    metadata: item.metadata || {},
  } as Item;
}

/**
 * Busca itens com filtros
 */
export async function searchItems(
  params: SearchItemsParams = {}
): Promise<{ items: Item[]; total: number }> {
  const {
    q = "",
    category,
    rarity,
    page = 1,
    pageSize = 24,
  } = params;

  const where: Prisma.ItemWhereInput = {};

  if (q) {
    where.item_name = {
      contains: q,
      mode: "insensitive",
    };
  }

  if (category) {
    where.category = category;
  }

  if (rarity) {
    where.rarity = rarity;
  }

  const total = await prisma.item.count({ where });

  const items = await prisma.item.findMany({
    where,
    orderBy: { item_name: "asc" },
    skip: (page - 1) * pageSize,
    take: pageSize,
  });

  return {
    items: items.map((item: any) => ({
      ...item,
      weight: item.weight ? Number(item.weight) : null,
      metadata: item.metadata || {},
    })) as Item[],
    total,
  };
}

/**
 * Busca item por source_table_name e source_table_id
 * (útil para migração ou compatibilidade com IDs antigos)
 */
export async function getItemBySource(
  sourceTableName: string,
  sourceTableId: number
): Promise<Item | null> {
  const item = await prisma.item.findUnique({
    where: {
      source_table_name_source_table_id: {
        source_table_name: sourceTableName,
        source_table_id: sourceTableId,
      },
    },
  });

  if (!item) {
    return null;
  }

  return {
    ...item,
    weight: item.weight ? Number(item.weight) : null,
    metadata: item.metadata || {},
  } as Item;
}