<?php

namespace App\Http\Controllers\Mini;

use App\Models\CustomerLevelModel;
use App\Models\HomeSpecialModel;
use App\Models\ProductModel;
use App\Services\CartService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Modules\AnnoRoute\Attribute\GetRoute;
use Modules\AnnoRoute\Attribute\RequestAttribute;

/**
 * 小程序特价推荐
 */
#[RequestAttribute('/mini', 'mini', authGuard: 'users')]
class SpecialController extends BaseMiniController
{
    /**
     * 特价推荐商品列表（免登录浏览；行结构与 /mini/product/list 一致：
     * 登录门店附等级价 price 与 cart_id/cart_quantity 供列表直接加减购物车；
     * data.cart 为购物车悬浮球汇总，未登录返回零值结构）
     */
    #[GetRoute('/special/list', authorize: false)]
    public function specials(Request $request): JsonResponse
    {
        $pageSize = (int) $request->input('pageSize', 10);
        $paginator = HomeSpecialModel::query()
            ->where('status', HomeSpecialModel::STATUS_NORMAL)
            ->whereHas('product', static function ($q) {
                $q->where('status', ProductModel::STATUS_ON);
            })
            ->with('product')
            ->orderBy('sort')
            ->orderBy('id')
            ->paginate($pageSize);

        // 当前门店的等级（售价 = 成本价 × (100 + 等级上浮比例) / 100）与购物车行
        $store = $this->optionalStore($request);
        $level = ($store !== null && $store->level_id > 0) ? $store->level : null;
        $cartService = app(CartService::class);
        $cartRows = $store !== null ? $cartService->cartRowMap($store->id) : [];

        $paginator->getCollection()->transform(
            static function (HomeSpecialModel $special) use ($level, $cartRows): array {
                $product = $special->product;
                $row = $product->toArray();
                // 实际价（按等级上浮比例换算；成本价不随序列化输出）
                $row['price'] = $level !== null
                    ? CustomerLevelModel::calcLevelPrice($product->cost_price, $level->percent)
                    : null;
                // 购物车数量（列表直接加减用；不在购物车为 0/'0.00'）
                $row['cart_id'] = $cartRows[$product->id]['id'] ?? 0;
                $row['cart_quantity'] = $cartRows[$product->id]['quantity'] ?? '0.00';
                return $row;
            }
        );

        $data = $paginator->toArray();
        $data['cart'] = $cartService->summary($store);

        return $this->success($data);
    }
}