<?php

namespace App\Models;

class Blacklist extends SoftDeletesModel
{
    protected $table = 'blacklists';

    protected $casts = [
        'file' => 'array',
        'start_date' => 'date',
        'end_date' => 'date',
        'status' => 'boolean',
        'credent' => 'integer',
    ];

    // 证件类型常量
    const CREDENT_ID_CARD = 1;  // 身份证
    const CREDENT_PASSPORT = 2; // 护照

    // 状态常量
    const STATUS_DISABLED = 0;  // 禁用
    const STATUS_ENABLED = 1;   // 启用

    /**
     * 获取证件类型文本
     */
    public function getCredentTextAttribute()
    {
        $credents = [
            self::CREDENT_ID_CARD => '身份证',
            self::CREDENT_PASSPORT => '护照',
        ];
        return $credents[$this->credent] ?? '未知';
    }

    /**
     * 获取状态文本
     */
    public function getStatusTextAttribute()
    {
        return $this->status ? '启用' : '禁用';
    }

    /**
     * 获取文件列表（多文件）
     */
    public function getFilesAttribute()
    {
        if (!$this->file) {
            return [];
        }

        return Upload::whereIn('id', $this->file)->get();
    }

    /**
     * 检查是否在有效期内
     */
    public function isActive()
    {
        if (!$this->status) {
            return false;
        }

        $now = now();

        // 检查开始时间
        if ($this->start_date && $now->lt($this->start_date)) {
            return false;
        }

        // 检查结束时间
        if ($this->end_date && $now->gt($this->end_date)) {
            return false;
        }

        return true;
    }

    /**
     * 检查访客是否在黑名单中
     */
    public static function checkVisitor($mobile, $idcard = null)
    {
        $query = self::where('status', self::STATUS_ENABLED)
            ->where(function ($q) use ($mobile, $idcard) {
                $q->where('mobile', $mobile);
                if ($idcard) {
                    $q->orWhere('idcard', $idcard);
                }
            });

        $blacklist = $query->first();

        if (!$blacklist) {
            return null;
        }

        return $blacklist->isActive() ? $blacklist : null;
    }

    /**
     * 添加黑名单记录
     */
    public static function addToBlacklist($data)
    {
        // 检查是否已存在
        $existing = self::where('mobile', $data['mobile'])
            ->orWhere('idcard', $data['idcard'] ?? '')
            ->first();

        if ($existing) {
            // 更新现有记录
            $existing->update($data);
            return $existing;
        }

        // 创建新记录
        return self::create($data);
    }

    /**
     * 从黑名单中移除
     */
    public function removeFromBlacklist()
    {
        $this->status = self::STATUS_DISABLED;
        $this->save();
    }

    /**
     * 获取有效期文本
     */
    public function getValidityPeriodText()
    {
        if (!$this->start_date && !$this->end_date) {
            return '永久有效';
        }

        $start = $this->start_date ? $this->start_date->format('Y-m-d') : '开始';
        $end = $this->end_date ? $this->end_date->format('Y-m-d') : '结束';

        return $start . ' 至 ' . $end;
    }

    /**
     * 获取剩余天数
     */
    public function getRemainingDays()
    {
        if (!$this->end_date) {
            return null; // 永久有效
        }

        $now = now();
        if ($now->gt($this->end_date)) {
            return 0; // 已过期
        }

        return $now->diffInDays($this->end_date);
    }

    /**
     * 检查是否即将过期（7天内）
     */
    public function isExpiringSoon()
    {
        $remainingDays = $this->getRemainingDays();
        return $remainingDays !== null && $remainingDays <= 7;
    }

    /**
     * 获取黑名单统计信息
     */
    public static function getStatistics()
    {
        $total = self::count();
        $active = self::where('status', self::STATUS_ENABLED)->count();
        $expired = self::where('status', self::STATUS_ENABLED)
            ->where('end_date', '<', now())
            ->count();
        $expiringSoon = self::where('status', self::STATUS_ENABLED)
            ->whereBetween('end_date', [now(), now()->addDays(7)])
            ->count();

        return [
            'total' => $total,
            'active' => $active,
            'expired' => $expired,
            'expiring_soon' => $expiringSoon,
            'disabled' => $total - $active,
        ];
    }

    /**
     * 批量导入黑名单
     */
    public static function batchImport($data)
    {
        $successCount = 0;
        $errorCount = 0;
        $errors = [];

        foreach ($data as $index => $item) {
            try {
                // 验证必填字段
                if (empty($item['mobile']) && empty($item['idcard'])) {
                    $errors[] = "第" . ($index + 1) . "行：手机号和证件号不能同时为空";
                    $errorCount++;
                    continue;
                }

                // 检查是否已存在
                $existing = self::where('mobile', $item['mobile'] ?? '')
                    ->orWhere('idcard', $item['idcard'] ?? '')
                    ->first();

                if ($existing) {
                    $existing->update($item);
                } else {
                    self::create($item);
                }

                $successCount++;
            } catch (\Exception $e) {
                $errors[] = "第" . ($index + 1) . "行：" . $e->getMessage();
                $errorCount++;
            }
        }

        return [
            'success_count' => $successCount,
            'error_count' => $errorCount,
            'errors' => $errors,
        ];
    }

    /**
     * 验证黑名单数据
     */
    public function validate()
    {
        $errors = [];

        if (empty($this->mobile) && empty($this->idcard)) {
            $errors[] = '手机号和证件号不能同时为空';
        }

        if (!empty($this->mobile) && !preg_match('/^1[3-9]\d{9}$/', $this->mobile)) {
            $errors[] = '手机号格式不正确';
        }

        if (!empty($this->idcard) && !preg_match('/^[1-9]\d{5}(18|19|20)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/', $this->idcard)) {
            $errors[] = '身份证号格式不正确';
        }

        if ($this->start_date && $this->end_date && $this->start_date > $this->end_date) {
            $errors[] = '开始时间不能晚于结束时间';
        }

        return $errors;
    }
}