<?php
namespace app\api\logic;

use app\common\basics\Logic;
use app\common\model\goods\GoodsCategory;
use app\common\server\UrlServer;

class GoodsCategoryLogic extends Logic
{
    /**
     * 获取平台一级分类
     */
    public static function getLevelOneList()
    {
        $where = [
            'del' => 0, // 未删除
            'is_show' => 1, // 显示
            'pid' => 0
        ];
        //
        $list = GoodsCategory::field('id,name,image,bg_image')
            ->withAttr('bg_image', function ($value, $data) {
                if (!empty($value)) {
                    return UrlServer::getFileUrl($value);
                }
                return $value;
            })
            ->where($where)
            ->order('sort', 'asc')
            ->select()
            ->toArray();

        return $list;
    }

    /**
     * 获取一级分类下的后代分类
     */
    public static function getListByLevelOne($id)
    {
        $where = [
            'del' => 0, // 未删除
            'is_show' => 1, // 显示
            'pid' => $id
        ];

        $list = GoodsCategory::field('id,name,image')
            ->where($where)
            ->order('sort', 'asc')
            ->select()
            ->toArray();

        foreach($list as &$item) {
            $where = [
                'del' => 0, // 未删除
                'is_show' => 1, // 显示
                'pid' => $item['id']
            ];
            $item['children'] =  GoodsCategory::field('id,name,image')
                ->where($where)
                ->order('sort', 'asc')
                ->select()
                ->toArray();
        }

        return $list;
    }

    /**
     * 根据关键词获取批量的三级分类列表
     * 注：完全匹配的词放到第一个
     */
    public static function getThirdListByKeyword($keyword)
    {
        $where = [];
        $where[] = ['name', 'like', '%'.$keyword.'%'];
        $where[] = ['level', '=', 3];
        $where[] = ['is_show', '=', 1];
        $list = GoodsCategory::field('id,name,image')
            ->where($where)
            ->order('sort', 'asc')
            ->select()
            ->toArray();

        foreach($list as $key => $item) {
            if ($keyword == $item['name']) {
                // 关键词完全匹配的，提到数组最前面 也就是当前的key和0做交换
                if ($key > 0) {
                    $oldFirst = $list[0];
                    $list[0] = $item;
                    $list[$key] = $oldFirst;
                }
            }
        }

        return $list;
    }
}