<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace addon\blog\model;

use ywxapp\model\BaseModel;


class BlogVisit extends BaseModel
{
   // 设置数据表名
    protected $name = 'blog_visit';
    
    // 设置主键
    protected $pk = 'id';
    
    // 自动写入时间戳
    protected $autoWriteTimestamp = 'int';
    protected $createTime = 'create_at';
    protected $updateTime = false;
    
    // 定义允许写入的字段
    protected $allowField = [
        'ip', 'url', 'referer', 'user_agent'
    ];
    
    // 设置字段类型
    protected $type = [ 
        'create_at' => 'int'
    ];
    
    // 获取客户端IP地址
    
    public static function getClientIp()
    {
        $ip = $_SERVER['REMOTE_ADDR'] ?? '0.0.0.0';
        if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $ips = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
            $ip = trim($ips[0]);
        }
        return $ip;
    }
    
    // 记录访问
    
    public static function record($url, $referer = '', $userAgent = '')
    {
        $visit = new self();
        $visit->ip = self::getClientIp();
        $visit->url = $url;
        $visit->referer = $referer ?: request()->server('HTTP_REFERER', '');
        $visit->user_agent = $userAgent ?: request()->server('HTTP_USER_AGENT', '');
        $visit->save();
    }
    
    // 获取访问统计
    
    public static function getStats($days = 7)
    {
        $startTime = time() - ($days * 86400);
        
        // 总访问量
        $total = self::where('create_at', '>=', $startTime)->count();
        
        // 独立访客
        $uniqueVisitors = self::where('create_at', '>=', $startTime)
            ->distinct(true)
            ->field('ip')
            ->count();
            
        // 热门页面
        $hotPages = self::where('create_at', '>=', $startTime)
            ->field('url, COUNT(*) as count')
            ->group('url')
            ->order('count', 'desc')
            ->limit(10)
            ->select();
            
        // 访问趋势
        $trend = [];
        for ($i = 0; $i < $days; $i++) {
            $date = date('Y-m-d', time() - ($i * 86400));
            $count = self::whereDay('create_at', $date)->count();
            $trend[$date] = $count;
        }
        
        return [
            'total' => $total,
            'unique_visitors' => $uniqueVisitors,
            'hot_pages' => $hotPages,
            'trend' => $trend
        ];
    }
    
    // 获取真实IP（考虑代理）
    
    public static function getRealIp()
    {
        $ip = $_SERVER['REMOTE_ADDR'] ?? '0.0.0.0';
        
        if (isset($_SERVER['HTTP_CLIENT_IP']) && filter_var($_SERVER['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP)) {
            $ip = $_SERVER['HTTP_CLIENT_IP'];
        } elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $ips = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
            foreach ($ips as $candidate) {
                $candidate = trim($candidate);
                if (filter_var($candidate, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
                    $ip = $candidate;
                    break;
                }
            }
        }
        
        return $ip;
    }
}