<?php

namespace App\Models;

class VisitLog extends SoftDeletesModel
{
    protected $table = 'visit_logs';

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

    // 日志类型常量
    const TYPE_CREATE = 'create';           // 创建申请
    const TYPE_UPDATE = 'update';           // 更新申请
    const TYPE_AUDIT = 'audit';             // 审核
    const TYPE_APPROVE = 'approve';         // 通过
    const TYPE_REJECT = 'reject';           // 驳回
    const TYPE_ENTER = 'enter';             // 进厂
    const TYPE_LEAVE = 'leave';             // 离厂
    const TYPE_CANCEL = 'cancel';           // 取消
    const TYPE_STUDY = 'study';             // 学习
    const TYPE_EXAM = 'exam';               // 考试

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

    /**
     * 关联管理员
     */
    public function admin()
    {
        return $this->belongsTo(Admin::class, 'admin_id');
    }

    /**
     * 关联用户
     */
    public function user()
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    /**
     * 关联部门
     */
    public function department()
    {
        return $this->belongsTo(Department::class, 'department_id');
    }

    /**
     * 记录访问日志
     */
    public static function log($visitId, $type, $remark = null, $adminId = null, $userId = null)
    {
        return self::create([
            'visit_id' => $visitId,
            'type' => $type,
            'admin_id' => $adminId,
            'user_id' => $userId,
            'remark' => $remark,
            'created_at' => now(),
            'updated_at' => now(),
        ]);
    }

    /**
     * 记录创建申请日志
     */
    public static function logCreate($visitId, $remark = null, $userId = null)
    {
        return self::log($visitId, self::TYPE_CREATE, $remark, null, $userId);
    }

    /**
     * 记录审核日志
     */
    public static function logAudit($visitId, $remark = null, $adminId = null)
    {
        return self::log($visitId, self::TYPE_AUDIT, $remark, $adminId);
    }

    /**
     * 记录通过日志
     */
    public static function logApprove($visitId, $remark = null, $adminId = null)
    {
        return self::log($visitId, self::TYPE_APPROVE, $remark, $adminId);
    }

    /**
     * 记录驳回日志
     */
    public static function logReject($visitId, $remark = null, $adminId = null)
    {
        return self::log($visitId, self::TYPE_REJECT, $remark, $adminId);
    }

    /**
     * 记录进厂日志
     */
    public static function logEnter($visitId, $remark = null, $adminId = null)
    {
        return self::log($visitId, self::TYPE_ENTER, $remark, $adminId);
    }

    /**
     * 记录离厂日志
     */
    public static function logLeave($visitId, $remark = null, $adminId = null)
    {
        return self::log($visitId, self::TYPE_LEAVE, $remark, $adminId);
    }

    /**
     * 记录学习日志
     */
    public static function logStudy($visitId, $remark = null, $userId = null)
    {
        return self::log($visitId, self::TYPE_STUDY, $remark, null, $userId);
    }

    /**
     * 记录考试日志
     */
    public static function logExam($visitId, $remark = null, $userId = null)
    {
        return self::log($visitId, self::TYPE_EXAM, $remark, null, $userId);
    }

    /**
     * 获取日志类型文本
     */
    public function getTypeTextAttribute()
    {
        $types = [
            self::TYPE_CREATE => '创建申请',
            self::TYPE_UPDATE => '更新申请',
            self::TYPE_AUDIT => '审核',
            self::TYPE_APPROVE => '通过',
            self::TYPE_REJECT => '驳回',
            self::TYPE_ENTER => '进厂',
            self::TYPE_LEAVE => '离厂',
            self::TYPE_CANCEL => '取消',
            self::TYPE_STUDY => '学习',
            self::TYPE_EXAM => '考试',
        ];
        return $types[$this->type] ?? '未知';
    }

    /**
     * 获取操作人信息
     */
    public function getOperatorAttribute()
    {
        if ($this->admin) {
            return $this->admin->name ?? '管理员';
        }
        if ($this->user) {
            return $this->user->name ?? '用户';
        }
        return '系统';
    }

    /**
     * 获取访问日志统计
     */
    public static function getStatistics($startDate = null, $endDate = null)
    {
        $query = self::query();

        if ($startDate) {
            $query->where('created_at', '>=', $startDate);
        }

        if ($endDate) {
            $query->where('created_at', '<=', $endDate);
        }

        $total = $query->count();
        $today = self::whereDate('created_at', today())->count();
        $thisWeek = self::whereBetween('created_at', [
            now()->startOfWeek(),
            now()->endOfWeek()
        ])->count();
        $thisMonth = self::whereMonth('created_at', now()->month)->count();

        return [
            'total' => $total,
            'today' => $today,
            'this_week' => $thisWeek,
            'this_month' => $thisMonth,
        ];
    }

    /**
     * 获取访问申请的操作历史
     */
    public static function getVisitHistory($visitId)
    {
        return self::where('visit_id', $visitId)
            ->with(['admin', 'user'])
            ->orderBy('created_at', 'desc')
            ->get();
    }

    /**
     * 获取操作日志（按类型分组）
     */
    public static function getLogsByType($type, $limit = 100)
    {
        return self::where('type', $type)
            ->with(['visit', 'admin', 'user'])
            ->orderBy('created_at', 'desc')
            ->limit($limit)
            ->get();
    }

    /**
     * 清理过期日志
     */
    public static function cleanExpiredLogs($days = 365)
    {
        $expiredDate = now()->subDays($days);
        return self::where('created_at', '<', $expiredDate)->delete();
    }

    /**
     * 获取日志详情
     */
    public function getDetails()
    {
        return [
            'id' => $this->id,
            'visit_id' => $this->visit_id,
            'type' => $this->getTypeTextAttribute(),
            'operator' => $this->getOperatorAttribute(),
            'remark' => $this->remark,
            'created_at' => $this->created_at->format('Y-m-d H:i:s'),
            'visit_info' => $this->visit ? [
                'code' => $this->visit->code,
                'name' => $this->visit->name,
                'mobile' => $this->visit->mobile,
                'company_name' => $this->visit->company_name,
            ] : null,
        ];
    }
}