<?php

namespace app\common\model;

use Illuminate\Database\Eloquent\SoftDeletes;
use support\Model;

class SysDict extends Model
{
    use SoftDeletes;

    /**
     * The connection name for the model.
     *
     * @var string|null
     */
    protected $connection = 'mysql';
    
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'sys_dict';

    /**
     * The primary key associated with the table.
     *
     * @var string
     */
    protected $primaryKey = 'id';

    /**
     * Indicates if the model should be timestamped.
     *
     * @var bool
     */
    public $timestamps = true;
    
    
    protected $dateFormat = 'U';

    /**
     * 允许自动填充模型字段
     */
    protected $fillable = ['id', 'category_id', 'dict_name', 'dict_code', 'description', 'status', 'created_at', 'updated_at', 'deleted_at'];

    /**
     * 不允许自动填充模型字段
     */
    protected $guarded = [];


    // 定义与 SysDictItem 的一对多关系
    public function sysDictItem()
    {
        return $this->hasMany(SysDictItem::class, 'dict_id', 'id');
    }


    public function category()
    {
        return $this->belongsTo(SysDictCategory::class, 'category_id', 'id');
    }

    /**
     * 一个字典有多个字典项
     */
    public function items()
    {
        return $this->hasMany(SysDictItem::class, 'dict_id', 'id');
    }

    /**
     * 通过 dict_code 快速获取所有 item_value
     */
    public function scopeGetItemValuesByCode($query, $dictCode)
    {
        return $query->where('dict_code', $dictCode)
                     ->with('items') // 预加载关联项
                     ->first()?->items->pluck('item_value'); // 返回 item_value 数组
    }

    /**
     * 通过 dict_code 获取完整字典项（含 label + value）
     */
    public function scopeGetItemsByCode($query, $dictCode)
    {
        return $query->where('dict_code', $dictCode)
                     ->with('items')
                     ->first()?->items;
    }
}