<?php

namespace app\supplier\model\product;

use think\facade\Cache;
use app\common\model\product\Category as CategoryModel;

/**
 * 商品分类模型
 */
class Category extends CategoryModel
{
    /**
     * 所有分类
     */
    public static function getSupplierALL($shop_supplier_id)
    {
        $model = new static;
        if (!Cache::get('category_supplier_' . $shop_supplier_id)) {
            $data = $model->with(['images'])
                ->where('shop_supplier_id','in',[0,$shop_supplier_id])
                ->order(['sort' => 'asc', 'create_time' => 'asc'])->select();
            $all = !empty($data) ? $data->toArray() : [];
            $tree = [];
            foreach ($all as $first) {
                if ($first['parent_id'] != 0) continue;
                $twoTree = [];
                foreach ($all as $two) {
                    if ($two['parent_id'] != $first['category_id']) continue;
                    $threeTree = [];
                    foreach ($all as $three)
                        $three['parent_id'] == $two['category_id']
                        && $threeTree[$three['category_id']] = $three;
                    !empty($threeTree) && $two['child'] = $threeTree;
                    array_push($twoTree, $two);
                }
                if (!empty($twoTree)) {
                    $temp_two_tree = array_column($twoTree, 'sort');
                    array_multisort($temp_two_tree, SORT_ASC, $twoTree);
                    $first['child'] = $twoTree;
                }
                array_push($tree, $first);
            }
            Cache::tag('cache')->set('category_supplier_' .$shop_supplier_id, compact('all', 'tree'));
        }
        return Cache::get('category_supplier_' . $shop_supplier_id);
    }

    /**
     * 获取所有分类
     */
    public static function getSupplierCacheAll($shop_supplier_id)
    {
        return self::getSupplierALL($shop_supplier_id)['all'];
    }

    /**
     * 获取所有分类(树状结构)
     */
    public static function getSupplierCacheTree($shop_supplier_id)
    {
        return self::getSupplierALL($shop_supplier_id)['tree'];
    }

    /**
     * 获取所有分类(树状结构)
     * @return string
     */
    public static function getSupplierCacheTreeJson($shop_supplier_id)
    {
        return json_encode(static::getSupplierCacheTree($shop_supplier_id));
    }
    /**
     * 获取所有一级分类
     */
    public static function getSupplierFirstCategory($shop_supplier_id)
    {
        return (new static())->where('parent_id', '=', 0)
            ->where('shop_supplier_id', '=', $shop_supplier_id)
            ->order(['sort' => 'asc', 'create_time' => 'asc'])
            ->select();
    }
    /**
     * 添加新记录
     */
    public function add($data)
    {
        $data['app_id'] = self::$app_id;
        $this->deleteCache($data['shop_supplier_id']);
        return $this->save($data);
    }

    /**
     * 编辑记录
     */
    public function edit($data)
    {
        if ($this['shop_supplier_id']==0){
            $this->error = '该分类为平台分类，不可以修改';
            return false;
        }
        // 验证：一级分类如果存在子类，则不允许移动
        if ($data['parent_id'] > 0 && static::hasSubCategory($this['category_id'])) {
            $this->error = '该分类下存在子分类，不可以移动';
            return false;
        }
        $this->deleteCache($this['shop_supplier_id']);
       // !array_key_exists('image_id', $data) && $data['image_id'] = 0;
        return $this->save($data) !== false;
    }

    /**
     * 删除商品分类
     */
    public function remove($categoryId)
    {
        if ($this['shop_supplier_id']==0){
            $this->error = '该分类为平台分类，不允许删除';
            return false;
        }
        // 判断是否存在商品
        if ($productCount = (new Product)->getProductTotal(['category_id' => $categoryId])) {
            $this->error = '该分类下存在' . $productCount . '个商品，不允许删除';
            return false;
        }
        // 判断是否存在子分类
        if (static::hasSubCategory($categoryId)) {
            $this->error = '该分类下存在子分类，请先删除';
            return false;
        }
        $this->deleteCache($this['shop_supplier_id']);
        return $this->delete();
    }

    /**
     * 删除缓存
     */
    private function deleteCache($shop_supplier_id)
    {
        Cache::delete('category_supplier_'.$shop_supplier_id);
        Cache::delete('category_all_' . static::$app_id);
        return Cache::delete('category_' . static::$app_id);
    }

}