<?php

namespace App\Models;

class Config extends SoftDeletesModel
{
    protected $table = 'configs';

    // 配置键常量
    const KEY_SYSTEM_NAME = 'system_name';                    // 系统名称
    const KEY_SYSTEM_LOGO = 'system_logo';                    // 系统Logo
    const KEY_VISIT_ADVANCE_DAYS = 'visit_advance_days';      // 预约提前天数
    const KEY_VISIT_MAX_DAYS = 'visit_max_days';              // 预约最大天数
    const KEY_STUDY_REQUIRED = 'study_required';              // 是否必须学习
    const KEY_STUDY_EXPIRE_DAYS = 'study_expire_days';        // 学习有效期
    const KEY_AUDIT_AUTO_APPROVE = 'audit_auto_approve';      // 自动审核
    const KEY_BLACKLIST_CHECK = 'blacklist_check';            // 黑名单检查
    const KEY_SMS_ENABLED = 'sms_enabled';                    // 短信通知
    const KEY_EMAIL_ENABLED = 'email_enabled';                // 邮件通知
    const KEY_WECHAT_ENABLED = 'wechat_enabled';              // 微信通知
    const KEY_GATE_QR_EXPIRE = 'gate_qr_expire';              // 门岗二维码有效期
    const KEY_VISIT_REMINDER_HOURS = 'visit_reminder_hours';  // 访问提醒时间
    const KEY_SYSTEM_MAINTENANCE = 'system_maintenance';      // 系统维护模式

    /**
     * 获取配置值
     */
    public static function get($key, $default = null)
    {
        $config = self::where('key', $key)->first();
        return $config ? $config->value : $default;
    }

    /**
     * 设置配置值
     */
    public static function set($key, $value, $name = null)
    {
        $config = self::where('key', $key)->first();

        if ($config) {
            $config->value = $value;
            if ($name) {
                $config->name = $name;
            }
            $config->save();
        } else {
            self::create([
                'key' => $key,
                'value' => $value,
                'name' => $name ?: $key,
            ]);
        }
    }

    /**
     * 获取系统名称
     */
    public static function getSystemName()
    {
        return self::get(self::KEY_SYSTEM_NAME, '访客管理系统');
    }

    /**
     * 获取系统Logo
     */
    public static function getSystemLogo()
    {
        return self::get(self::KEY_SYSTEM_LOGO);
    }

    /**
     * 获取预约提前天数
     */
    public static function getVisitAdvanceDays()
    {
        return (int) self::get(self::KEY_VISIT_ADVANCE_DAYS, 1);
    }

    /**
     * 获取预约最大天数
     */
    public static function getVisitMaxDays()
    {
        return (int) self::get(self::KEY_VISIT_MAX_DAYS, 30);
    }

    /**
     * 是否必须学习
     */
    public static function isStudyRequired()
    {
        return (bool) self::get(self::KEY_STUDY_REQUIRED, true);
    }

    /**
     * 获取学习有效期
     */
    public static function getStudyExpireDays()
    {
        return (int) self::get(self::KEY_STUDY_EXPIRE_DAYS, 30);
    }

    /**
     * 是否自动审核
     */
    public static function isAuditAutoApprove()
    {
        return (bool) self::get(self::KEY_AUDIT_AUTO_APPROVE, false);
    }

    /**
     * 是否检查黑名单
     */
    public static function isBlacklistCheckEnabled()
    {
        return (bool) self::get(self::KEY_BLACKLIST_CHECK, true);
    }

    /**
     * 是否启用短信通知
     */
    public static function isSmsEnabled()
    {
        return (bool) self::get(self::KEY_SMS_ENABLED, true);
    }

    /**
     * 是否启用邮件通知
     */
    public static function isEmailEnabled()
    {
        return (bool) self::get(self::KEY_EMAIL_ENABLED, true);
    }

    /**
     * 是否启用微信通知
     */
    public static function isWechatEnabled()
    {
        return (bool) self::get(self::KEY_WECHAT_ENABLED, true);
    }

    /**
     * 获取门岗二维码有效期（小时）
     */
    public static function getGateQrExpireHours()
    {
        return (int) self::get(self::KEY_GATE_QR_EXPIRE, 24);
    }

    /**
     * 获取访问提醒时间（小时）
     */
    public static function getVisitReminderHours()
    {
        return (int) self::get(self::KEY_VISIT_REMINDER_HOURS, 2);
    }

    /**
     * 是否系统维护模式
     */
    public static function isSystemMaintenance()
    {
        return (bool) self::get(self::KEY_SYSTEM_MAINTENANCE, false);
    }

    /**
     * 获取所有配置
     */
    public static function getAllConfigs()
    {
        return self::all()->pluck('value', 'key')->toArray();
    }

    /**
     * 批量设置配置
     */
    public static function setBatch($configs)
    {
        foreach ($configs as $key => $value) {
            self::set($key, $value);
        }
    }

    /**
     * 获取系统配置统计
     */
    public static function getStatistics()
    {
        $total = self::count();
        $systemConfigs = self::whereIn('key', [
            self::KEY_SYSTEM_NAME,
            self::KEY_SYSTEM_LOGO,
            self::KEY_SYSTEM_MAINTENANCE,
        ])->count();

        $visitConfigs = self::whereIn('key', [
            self::KEY_VISIT_ADVANCE_DAYS,
            self::KEY_VISIT_MAX_DAYS,
            self::KEY_VISIT_REMINDER_HOURS,
        ])->count();

        $studyConfigs = self::whereIn('key', [
            self::KEY_STUDY_REQUIRED,
            self::KEY_STUDY_EXPIRE_DAYS,
        ])->count();

        $notificationConfigs = self::whereIn('key', [
            self::KEY_SMS_ENABLED,
            self::KEY_EMAIL_ENABLED,
            self::KEY_WECHAT_ENABLED,
        ])->count();

        return [
            'total' => $total,
            'system_configs' => $systemConfigs,
            'visit_configs' => $visitConfigs,
            'study_configs' => $studyConfigs,
            'notification_configs' => $notificationConfigs,
        ];
    }

    /**
     * 初始化默认配置
     */
    public static function initDefaultConfigs()
    {
        $defaultConfigs = [
            self::KEY_SYSTEM_NAME => '访客管理系统',
            self::KEY_VISIT_ADVANCE_DAYS => 1,
            self::KEY_VISIT_MAX_DAYS => 30,
            self::KEY_STUDY_REQUIRED => true,
            self::KEY_STUDY_EXPIRE_DAYS => 30,
            self::KEY_AUDIT_AUTO_APPROVE => false,
            self::KEY_BLACKLIST_CHECK => true,
            self::KEY_SMS_ENABLED => true,
            self::KEY_EMAIL_ENABLED => true,
            self::KEY_WECHAT_ENABLED => true,
            self::KEY_GATE_QR_EXPIRE => 24,
            self::KEY_VISIT_REMINDER_HOURS => 2,
            self::KEY_SYSTEM_MAINTENANCE => false,
        ];

        foreach ($defaultConfigs as $key => $value) {
            if (!self::where('key', $key)->exists()) {
                self::create([
                    'key' => $key,
                    'value' => $value,
                    'name' => $key,
                ]);
            }
        }
    }

    /**
     * 获取配置详情
     */
    public function getDetails()
    {
        return [
            'id' => $this->id,
            'key' => $this->key,
            'name' => $this->name,
            'value' => $this->value,
            'created_at' => $this->created_at->format('Y-m-d H:i:s'),
            'updated_at' => $this->updated_at->format('Y-m-d H:i:s'),
        ];
    }

    /**
     * 验证配置值
     */
    public function validate()
    {
        $errors = [];

        if (empty($this->key)) {
            $errors[] = '配置键不能为空';
        }

        if (empty($this->name)) {
            $errors[] = '配置名称不能为空';
        }

        // 根据不同的配置键进行特殊验证
        switch ($this->key) {
            case self::KEY_VISIT_ADVANCE_DAYS:
            case self::KEY_VISIT_MAX_DAYS:
            case self::KEY_STUDY_EXPIRE_DAYS:
            case self::KEY_GATE_QR_EXPIRE:
            case self::KEY_VISIT_REMINDER_HOURS:
                if (!is_numeric($this->value) || $this->value < 0) {
                    $errors[] = '数值配置必须为非负数';
                }
                break;
            case self::KEY_STUDY_REQUIRED:
            case self::KEY_AUDIT_AUTO_APPROVE:
            case self::KEY_BLACKLIST_CHECK:
            case self::KEY_SMS_ENABLED:
            case self::KEY_EMAIL_ENABLED:
            case self::KEY_WECHAT_ENABLED:
            case self::KEY_SYSTEM_MAINTENANCE:
                if (!in_array($this->value, ['0', '1', 'true', 'false'])) {
                    $errors[] = '布尔配置值必须为0/1或true/false';
                }
                break;
        }

        return $errors;
    }
}