<?php

namespace App\Http\Controllers\Mini;

use App\Exceptions\RepositoryException;
use App\Models\ProductCategoryModel;
use App\Models\ProductModel;
use App\Models\ProductPriceModel;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Modules\AnnoRoute\Attribute\GetRoute;
use Modules\AnnoRoute\Attribute\RequestAttribute;

/**
 * 小程序商品
 */
#[RequestAttribute('/mini', 'mini', authGuard: 'users')]
class ProductController extends BaseMiniController
{
    /** 分类树（全部启用分类，含暂无商品的分类） */
    #[GetRoute('/product/categories', authorize: true)]
    public function categories(): JsonResponse
    {
        return $this->success(ProductCategoryModel::getTreeData(['*'], true));
    }

    /**
     * 商品列表
     */
    #[GetRoute('/product/list', authorize: false)]
    public function products(Request $request): JsonResponse
    {
        $query = ProductModel::query()
            ->where('status', ProductModel::STATUS_ON)
            ->with('category:id,name');

        $categoryId = (int) $request->input('category_id', 0);
        if ($categoryId > 0) {
            $query->where('category_id', $categoryId);
        }
        $keyword = trim((string) $request->input('keyword', ''));
        if ($keyword !== '') {
            $query->where(static function ($q) use ($keyword) {
                $q->where('name', 'like', '%' . $keyword . '%');
            });
        }

        $pageSize = (int) $request->input('pageSize', 10);
        $paginator = $query->orderBy('sort')
            ->orderBy('id')
            ->paginate($pageSize);

        // 当前门店的等级价格（一次性取出，避免逐行查询）
        $user = $this->optionalUser($request);
        $store = $user !== null ? $this->boundStore($user) : null;
        $priceRows = collect();
        if ($store !== null && $store->level_id > 0) {
            $priceRows = ProductPriceModel::query()
                ->where('level_id', $store->level_id)
                ->whereIn('product_id', $paginator->getCollection()->pluck('id'))
                ->get(['product_id', 'price', 'price_type', 'percent'])
                ->keyBy('product_id');
        }

        $paginator->getCollection()->transform(
            static function (ProductModel $product) use ($priceRows): array {
                $row = $product->toArray();
                // 实际价（百分比计价行按成本价上浮换算；成本价不随序列化输出）
                $priceRow = $priceRows->get($product->id);
                $row['price'] = $priceRow !== null
                    ? ProductPriceModel::calcActualPrice(
                        (int) $priceRow->price_type,
                        (string) $priceRow->price,
                        (string) $priceRow->percent,
                        (string) $product->cost_price,
                    )
                    : null;
                return $row;
            }
        );

        return $this->success($paginator->toArray());
    }

    /**
     * 商品详情（免登录浏览；登录门店按等级显示换算价，未登录/未绑店/未设等级 price=null）
     */
    #[GetRoute('/product/{id}', authorize: false, where: ['id' => '[0-9]+'])]
    public function detail(int $id, Request $request): JsonResponse
    {
        $product = ProductModel::query()
            ->where('status', ProductModel::STATUS_ON)
            ->with('category:id,name')
            ->find($id);
        if ($product === null) {
            throw new RepositoryException('商品不存在或已下架');
        }

        $price = null;
        $user = $this->optionalUser($request);
        $store = $user !== null ? $this->boundStore($user) : null;
        if ($store !== null && $store->level_id > 0) {
            $priceRow = ProductPriceModel::query()
                ->forProductLevel($product->id, $store->level_id)
                ->first(['price', 'price_type', 'percent']);
            if ($priceRow !== null) {
                $price = ProductPriceModel::calcActualPrice(
                    (int) $priceRow->price_type,
                    (string) $priceRow->price,
                    (string) $priceRow->percent,
                    (string) $product->cost_price,
                );
            }
        }

        $data = $product->toArray();
        $data['price'] = $price;

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