fastadmin_tailored/application/api/controller/Goods.php

<?php

namespace app\api\controller;

use app\common\Enum\GoodsEnum;
use app\common\model\Goods as GoodsModel;
use app\common\model\Guarantee;
use app\common\model\Collect;
use app\common\model\Comment;
use app\common\model\AttributeValue;
// use app\common\model\Coupon;
// use app\common\model\CouponCondition;
// use app\common\model\UserCoupon;
use app\common\Service\Goods\GoodService;
use fast\Http;
use think\Log;
use think\Db;
use app\common\Service\SkuSpec as SkuSpecService;
use app\common\Service\Goods\CategoryService;
use app\common\Service\DiscountService;
use app\common\Service\Goods\CommentService;
use app\common\facade\Wechat;
use app\common\library\easywechatPlus\WechatService;
/**
 * 商品接口
 */
class Goods extends Base
{
    protected $noNeedLogin = [ 'detail', 'lists', 'getWxCode','getCategoryGoods'];
    //详情
    public function detail()
    {
        $id = $this->request->param('id/d');
        if (!$id) {
            $this->error('参数错误');
        }
        $row = (new GoodsModel())->with([
            'Sku',
            'Comment' => function ($query) {
                $query->relation([
                    'reply' => function ($user) {
                        $user->with([
                            'manage' => function ($u) {
                                $u->field('id,nickname');
                            }
                        ]);
                    }
                ])->where([
                    'status' => 'normal',
                    'pid' => 0
                ])->field('id,goods_id,content,star,user_id,images,comments,createtime')->with([
                    'User' => function ($u) {
                        $u->field('id,nickname,avatar');
                    }
                ])->order('createtime', 'desc')->limit(10);
            }
        ])->whereIn('status',[GoodsEnum::STATUS_ON_SALE,GoodsEnum::STATUS_SOLD_OUT])->where('id', $id)->find();

        if (!$row) {
            $this->error('未找到该商品');
        }
        // 浏览次数
        $row->setInc('views');
        //收藏
        if ($this->auth->isLogin()) {
            $row->is_collect = !!(Collect::where([
                'user_id' => $this->auth->id,
                'goods_id' => $id,
                'status' => 1
            ])->find());
        } else {
            $row->is_collect = false;
        }
        $row->sku_spec = SkuSpecService::getGoodsSkuSpec($id);

        //  要处理规格的图片
        // 这个错误是因为 $row->sku_spec 是一个重载属性（通过魔术方法 __get() 获取），不能直接通过引用修改。我们需要先将其转换为普通数组，处理后再赋值回去。
        if (!empty($row->sku_spec)) {
            $skuSpecData = $row->sku_spec;  // 先转换为普通数组
            foreach ($skuSpecData as $key => &$item) {
                if (!empty($item['sku_value'])) {
                    foreach ($item['sku_value'] as $k => &$v) {  
                        $v['image'] = empty($v['image']) ? '' : cdnurl($v['image'], true);
                    }
                }
            }
            $row->sku_spec = $skuSpecData;  // 处理完后重新赋值
        }
        // 
        unset($item);

        //服务保障
        $row->guarantee = $row->guarantee_ids ? Guarantee::field('id,name,intro')->where('id', 'IN', $row->guarantee_ids)
        ->where('status', 'normal')->select() : [];
        //属性
        $row->attributes = AttributeValue::getAttributeList($row->attribute_ids);
        //好评度
        $commentInfo = CommentService::getCommentCountAndFirstComment($id);
        $comment_count = $commentInfo['total'] ?? 0;
        $row->comment    = $commentInfo['comment'] ?? null;


        $row->visible(explode(',', 'id,title,type,spec_type,sub_title,category_ids,price,lineation_price,sales,views,is_hot,
        image,content,images,sku_spec,sku,comment,is_collect,guarantee,attributes,favor_rate,coupon'));
        $row = $row->toArray();
        $row['content'] = \app\common\library\Service::formatTplToUniapp($row['content']);

        //查询折扣信息   以及倒计时
        $row['discount_info'] = DiscountService::getGoodsDiscountDetail($row['id']);
        
        // 处理SKU的折扣价格
        $this->processSkuDiscountPrices($row);
        
        $row['comment_total'] = $comment_count;
        // 查询是否有定制规格
        $goodsCustomizedSpec = GoodService::getGoodsCustomizedSpec($id, 2);
        $row['is_customized_spec'] = !empty($goodsCustomizedSpec) ? 1: 0;
        $this->success('获取成功', $row);
    }

    public function getGoodsCustomizedSpec()
    {
        $id = $this->request->param('id/d');
        if (!$id) {
            $this->error('参数错误');
        }
        $row = (new GoodsModel())
        ->field('id,title,sub_title,type,category_ids,price,lineation_price,image')
        ->whereIn('status',[GoodsEnum::STATUS_ON_SALE,GoodsEnum::STATUS_SOLD_OUT])
        ->where('id', $id)->find();

        if (!$row) {
            $this->error('未找到该商品');
        }
        $row->sku_spec = SkuSpecService::getGoodsSkuSpec($id,2);

        //  要处理规格的图片
        // 这个错误是因为 $row->sku_spec 是一个重载属性（通过魔术方法 __get() 获取），不能直接通过引用修改。我们需要先将其转换为普通数组，处理后再赋值回去。
        if (!empty($row->sku_spec)) {
            $skuSpecData = $row->sku_spec;  // 先转换为普通数组
            foreach ($skuSpecData as $key => &$item) {
                if (!empty($item['sku_value'])) {
                    foreach ($item['sku_value'] as $k => &$v) {  
                        $v['image'] = empty($v['image']) ? '' : cdnurl($v['image'], true);
                    }
                }
            }
            $row->sku_spec = $skuSpecData;  // 处理完后重新赋值
        }
       
        $this->success('获取成功', $row);
    }

    //列表
    public function lists()
    {
        $param = $this->request->param();
        // 增加验证器处理
        $validate = new \app\api\validate\Goods();
        if (!$validate->scene('lists')->check($param)) {
            $this->error($validate->getError());
        }
        $pageSize  = $param['pageSize'] ?? 10;
        $orderby   = $param['orderby'] ?? 'weigh';
        $orderway  = $param['orderway'] ?? 'desc';

        // 映射字段 $orderby  weigh,sales,price,views,comments,created_at
        $orderbyMap = [
            'weigh' => 'weigh',
            'sales' => 'sales',
            'views' => 'views',
            'comments' => 'comments',
            'created_at' => 'createtime',
        ];

        $query = GoodsModel::where(function ($query) use ($param) {
            $query->where('status',GoodsEnum::STATUS_ON_SALE);
            //关键词
            if (isset($param['keywords']) && !empty($param['keywords'])) {
                $query->where('title|keywords', 'like', '%' . $param['keywords'] . '%');
                $log = \app\common\model\SearchLog::getByKeywords($param['keywords']);
                if ($log) {
                    $log->setInc("nums");
                } else {
                    \app\common\model\SearchLog::create(['keywords' => $param['keyword'], 'nums' => 1, 'status' => 'hidden']);
                }
            }
            //分类
            if (isset($param['category_id']) && !empty($param['category_id'])) {
                $categoryIds = [];
                // 获取子集
                $categoryChildIds = \app\common\model\Category::getCategoryChildrenIds($param['category_id']);
                $categoryIds = array_merge($categoryChildIds, [$param['category_id']]);
                $query->where(function ($query) use ($categoryIds) {
                    // 所有子分类使用 find_in_set or 匹配，亲测速度并不慢
                    foreach ($categoryIds as $key => $category_id) {
                        $query->whereOrRaw("find_in_set($category_id, category_ids)");
                    }
                });                
            }
 
            //属性
            if (isset($param['attributes']) && !empty($param['attributes'])) {
                $query->where('id', 'IN', \app\common\model\GoodsAttr::getGoodsIds($param['attributes']));
            }
            //品牌
            if (isset($param['brand_id']) && !empty($param['brand_id'])) {
                $query->where('brand_id', 'IN', $param['brand_id']);
            }
            //价格
            if (isset($param['price']) && !empty($param['price'])) {
                $priceArr = explode('-', $param['price']);
                if (count($priceArr) == 2) {
                    if (isset($priceArr[0])) {
                        $priceArr[0] = (float)$priceArr[0];
                    }
                    if (isset($priceArr[1])) {
                        $priceArr[1] = (float)$priceArr[1];
                    }
                    $query->where('price', 'BETWEEN', $priceArr);
                }
            }
        });
        if (!empty($orderby) && !empty($orderway)) {
            $orderby = $orderbyMap[$orderby] ?? 'weigh';
            $query = $query->order("{$orderby} {$orderway}");
        }
        $list = $query->paginate($pageSize);

        foreach ($list as $item) {
            $item->visible(explode(',', 'id,title,image,price,sales,views,description,lineation_price,is_hot,createtime'));
        }

        $this->success('', $list);
    }

    //  根据分类顶级ID 查询子集 和对应的商品

    public function getCategoryGoods()
    {
        $param = $this->request->param();
        $categoryId = $param['category_id'] ?? 0;
        // 验证器 
        $validate = new \app\api\validate\Goods();
        if (!$validate->scene('getCategoryGoods')->check($param)) {
            $this->error($validate->getError());
        }
        // 查询子集分类信息
        $categoryChildIds = CategoryService::getCategoryChildrenIds($categoryId);
        // 查询所有直接子分类
        $children = [];
        foreach (CategoryService::getCategoryByIds($categoryChildIds) as $cat) {
            if (isset($cat['pid']) && $cat['pid'] == $categoryId) {
                $children[] = $cat;
            }
        }
        // 获取所有直接子分类ID
        $childrenIds = array_column($children, 'id');
        // 一次性查出所有相关分类下的所有商品（不分页）
        $allGoods = GoodService::getCategoryGoods($childrenIds); // 不分页查全部
        // 按分类分组，每组只保留4个
        $goodsByCategory = [];
        foreach ($allGoods as $goods) {
            if (empty($goods['category_ids'])) continue;
            $goodsCatIds = explode(',', $goods['category_ids']);
            foreach ($goodsCatIds as $catId) {
                $catId = intval($catId);
                if (in_array($catId, $childrenIds)) {
                    if (!isset($goodsByCategory[$catId])) $goodsByCategory[$catId] = [];
                    if (count($goodsByCategory[$catId]) < 4) {
                        $goodsByCategory[$catId][] = $goods;
                    }
                }
            }
        }
        // 组装返回
        $arrReturn = [];
        foreach ($children as $item) {
            $item['goods'] = $goodsByCategory[$item['id']] ?? [];
            $arrReturn[] = $item;
        }
        $this->success('', $arrReturn);
    }

    //获取小程序码
    public function getWxCode()
    {
        $goods_id = $this->request->post('goods_id');
        $version = $this->request->post('version', 'trial');
        if (empty($goods_id)) {
            $this->error('参数错误');
        }
        $user_id = '';
        if ($this->auth->isLogin()) {
            $user_id = $this->auth->id;
        }
        
        $result = (new WechatService(Wechat::miniProgram()))->getWxCodeUnlimited([
            'scene'       => "id={$goods_id}&invite_id={$user_id}",
            'env_version' => $version, //要打开的小程序版本。正式版为 release，体验版为 trial，开发版为 develop
            'page'        => 'pages/pro/detail',
            'check_path'  => false
        ]);
        
        // 检查返回结果是否为错误信息（数组格式）
        if (is_array($result)) {
            Log::write('微信小程序码获取失败: ' . json_encode($result));
            $this->error("获取微信二维码失败！" . ($result['errmsg'] ?? ''));
        }
        
        // 成功时，$result 就是图片的二进制buffer数据，直接进行base64编码
        if (empty($result) || !is_string($result)) {
            Log::write('微信小程序码返回数据无效');
            $this->error("获取微信二维码失败！");
        }
        
        $base64_data = base64_encode($result);
        $base64_file = 'data:image/png;base64,' . $base64_data;
        $this->success('获取成功', $base64_file);
    }

    /**
     * 处理SKU的折扣价格
     * 将活动折扣价格应用到对应的SKU中
     * @param array $goodsData 商品数据（引用传递）
     */
    private function processSkuDiscountPrices(&$goodsData)
    {
        // 如果没有折扣信息，直接返回
        if (empty($goodsData['discount_info']) || empty($goodsData['discount_info']['discount_info'])) {
            return;
        }

        // 如果没有SKU数据，直接返回
        if (empty($goodsData['sku'])) {
            return;
        }

        // 构建折扣SKU映射表：sku_id => 折扣信息
        $discountSkuMap = [];
        foreach ($goodsData['discount_info']['discount_info'] as $discountItem) {
            $skuId = $discountItem['sku_id'];
            $discountSkuMap[$skuId] = $discountItem;
        }

        // 处理商品的SKU数据
        foreach ($goodsData['sku'] as &$sku) {
            $skuId = $sku['id'];
            
            // 如果该SKU参与了折扣活动
            if (isset($discountSkuMap[$skuId])) {
                $discountInfo = $discountSkuMap[$skuId];
                
                // 保存原价到新字段
                $sku['original_price'] = $sku['price'];
                
                // 将折扣价格设置为SKU价格
                $sku['price'] = $discountInfo['discount_price'];
                
                // 添加折扣相关信息
                $sku['has_discount'] = true;
                $sku['discount'] = $discountInfo['discount'];
                $sku['discount_price'] = $discountInfo['discount_price'];
                $sku['discount_stocks'] = $discountInfo['discount_stocks'];
                // 计算优惠金额：原价 - 折扣价 = 用户节省的金额
                $sku['discount_amount'] =$discountInfo['discount_price'];
            } else {
                // 没有参与折扣活动的SKU
                $sku['has_discount'] = false;
                $sku['original_price'] = $sku['price'];
                $sku['discount'] = null;
                $sku['discount_price'] = null;
                $sku['discount_stocks'] = null;
                $sku['discount_amount'] = 0;
            }
        }

        // 处理单规格商品的主价格
        if ($goodsData['spec_type'] == 0 && !empty($goodsData['sku'])) {
            $firstSku = $goodsData['sku'][0];
            if ($firstSku['has_discount']) {
                // 保存商品原价
                $goodsData['original_price'] = $goodsData['price'];
                // 将商品价格设置为折扣价格
                $goodsData['price'] = $firstSku['discount_price'];
            }
        }
    }
}