<?php

namespace App\Models;

class VisitAudit extends SoftDeletesModel
{
    protected $table = 'visit_audits';

    protected $casts = [
        'status' => 'integer',
        'level' => 'boolean',
    ];

    // 审核状态常量
    const STATUS_PENDING = 0;    // 待审核
    const STATUS_APPROVED = 1;   // 通过
    const STATUS_REJECTED = 2;   // 驳回

    /**
     * 关联访问申请
     */
    public function visit()
    {
        return $this->belongsTo(Visit::class, 'visit_id');
    }

    /**
     * 关联审核人员
     */
    public function auditAdmin()
    {
        return $this->belongsTo(Admin::class, 'audit_admin_id');
    }

    /**
     * 获取审核状态文本
     */
    public function getStatusTextAttribute()
    {
        $statuses = [
            self::STATUS_PENDING => '待审核',
            self::STATUS_APPROVED => '通过',
            self::STATUS_REJECTED => '驳回',
        ];
        return $statuses[$this->status] ?? '未知';
    }

    /**
     * 获取审核等级文本
     */
    public function getLevelTextAttribute()
    {
        return $this->level ? '高级审核' : '普通审核';
    }

    /**
     * 检查是否可以审核
     */
    public function canAudit($adminId)
    {
        // 检查审核权限
        if ($this->audit_admin_id != $adminId) {
            return false;
        }

        // 检查状态
        if ($this->status != self::STATUS_PENDING) {
            return false;
        }

        return true;
    }

    /**
     * 执行审核
     */
    public function performAudit($status, $reason = null, $adminId = null)
    {
        if (!$this->canAudit($adminId)) {
            throw new \Exception('无权限审核或状态不允许');
        }

        $this->status = $status;
        $this->reason = $reason;
        $this->save();

        // 更新访问申请状态
        $visit = $this->visit;
        if ($visit) {
            if ($status == self::STATUS_APPROVED) {
                $visit->audit_status = Visit::AUDIT_STATUS_APPROVED;
            } elseif ($status == self::STATUS_REJECTED) {
                $visit->audit_status = Visit::AUDIT_STATUS_REJECTED;
            }
            $visit->save();
        }

        return $this;
    }
}