<?php

namespace app\common\service;

use app\common\logic\PostCategoryLogic;
use app\common\model\NavItems;
use app\common\validate\PostCategoryValidate;
use app\common\traits\crud\CrudServiceTrait;
use app\common\model\PostCategory;
use support\Request;

class PostCategoryService
{

    use CrudServiceTrait;

    protected $logic;

    /**
     * 指定当前要操作的模型
     */
    protected string $modelClass = PostCategory::class;

    /**
     * 验证器
     */
    protected $validator = PostCategoryValidate::class;

    public function __construct()
    {
        $this->logic = (new PostCategoryLogic());
    }

    /**
     * 获取验证器
     */
    public function getValidator()
    {
        return  new $this->validator;
    }

    /**
     * 获取系统list
     */
    public function preset($params)
    {
        $where = [];
        if(isset($params['parent_id']) && $params['parent_id']) {
            $where['parent_id'] = $params['parent_id'];
        }else{
            $where['parent_id'] = 0;
        }
        $result = $this->logic->getList($where)->toArray();
        return $result;
    }

    /**
     * 获取系统list
     */
    public function getList($params)
    {
        $where = [];
        if(isset($params['parent_id']) && $params['parent_id']) {
            $where['parent_id'] = $params['parent_id'];
        }else{
            $where['parent_id'] = 0;
        }
        $result = $this->logic->getList($where)->toArray();
        foreach ($result as $key => $value) {
            $where = [];
            $where['parent_id'] = $value['id'];
            $result[$key]['children'] = $this->logic->getList($where)->toArray();
            foreach ( $result[$key]['children'] as $k => $v) {
                $where = [];
                $where['parent_id'] = $v['id'];
                $result[$key]['children'][$k]['children'] = $this->logic->getList($where)->toArray();
            }
        }
        return $result;
    }

    /**
     * 添加前置处理
     */
    public function beforeServiceStore($data, Request $request)
    {
        $brand_id = $data['parent_id'] ?? 0;
        if($brand_id == 0) {
            $data['level'] = 1;
            $data['path'] = '';
            return $data;
        }
        $parent = PostCategory::where('id', $data['parent_id'])->first();
        $parent['path'] = !empty($parent['path'])?:'/';
        $data['level'] = $parent['level']+1;
        $data['path'] = $parent['path'].$parent['id'].'/';

        if($data['level'] > 3) {
            throw new \Exception("分类层级不能超过三层");
        }

        return $data;
    }
}