<?php

namespace app\model;

use support\Model;

class ApprovalFlow extends Model
{
    protected $table = 'approval_flow';

    protected $fillable = [
        'business_type',
        'name',
        'description',
        'status',
    ];

    protected $casts = [
        'status' => 'integer',
        'created_at' => 'datetime',
        'updated_at' => 'datetime',
    ];

    /**
     * 关联审批节点
     */
    public function nodes()
    {
        return $this->hasMany(ApprovalNode::class, 'flow_id')->orderBy('order');
    }

    /**
     * 获取启用的流程
     */
    public function scopeActive($query)
    {
        return $query->where('status', 1);
    }

    /**
     * 根据业务类型获取流程
     */
    public function scopeByBusinessType($query, string $businessType)
    {
        return $query->where('business_type', $businessType);
    }
}