<?php

namespace app\admin\model;

use think\Db;
use think\Model;


class Item extends Model
{

    
    // 表名
    protected $name = 'item';
    
    // 自动写入时间戳字段
    protected $autoWriteTimestamp = false;

    // 定义时间戳字段名
    protected $createTime = false;
    protected $updateTime = false;
    protected $deleteTime = false;

    // 追加属性
    protected $append = [
        'status_text'
    ];
    

    public function getStatusList()
    {
        return ['1' => __('Status 1'), '0' => __('Status 0')];
    }


    public function getStatusTextAttr($value, $data)
    {
        $value = $value ?: ($data['status'] ?? '');
        $list = $this->getStatusList();
        return $list[$value] ?? '';
    }

    public function getAll(){
        return $this->where('status',1)
            ->field('id,pid,level,title,key_word,sort,status')
            ->select();
    }


    public function getList(){
        $items =  $this
            ->where('status',1)
            ->field(['id','title','key_word','pid'])
            ->order('pid','asc')
            ->order('sort','desc')
            ->select();


        $this->items = $items;
        $filtered = array_filter($items, function($item) {
            return $item['pid'] == 0;
        });

        $pid_map = array_column($filtered,null,'id');
        $res_items = [];
        foreach ($items as $item){
            if ($item['pid'] != 0 && isset($pid_map[$item['pid']])){
                $res_items [] = [
                    ...$item->toArray(),'ptitle' => $pid_map[$item['pid']]['title']
                ];
            }
        }
        return $res_items;
    }

    public function getAllData(){
        $items =  $this
            ->where('status',1)
            ->field(['id','title','key_word','pid'])
            ->order('pid','asc')
            ->order('sort','desc')
            ->select();
        $res_items = [];
        foreach ($items as $item){
            $res_items [] = $item->toArray();
        }
        return $res_items;
    }


    static function getAllChildIds(array $data, int $parentId): array {
        // 先构建 pid 索引表，加速查找
        $index = [];
        foreach ($data as $item) {
            $index[$item['pid']][] = $item;
        }
        // 递归函数，闭包形式避免污染全局
        $collect = function($pid) use (&$collect, &$index) {
            $ids = [];
            if (isset($index[$pid])) {
                foreach ($index[$pid] as $child) {
                    $ids[] = $child['id'];
                    $ids = array_merge($ids, $collect($child['id']));
                }
            }
            return $ids;
        };

        return $collect($parentId);
    }


}