<?php

namespace App\Service\common;

use App\BaseApp\BaseNotAuthService;

/**
 * User-Agent 解析：登录日志 / 操作日志共用
 */
class UserAgentService extends BaseNotAuthService
{
    /**
     * 从 UA 推断操作系统名称
     * 为什么允许空参：中间件/登录处直接取当前请求头，避免到处传 UA
     *
     * @param string|null $ua 为空时取当前请求 User-Agent
     */
    public function parseEquipment(?string $ua = null): string
    {
        $ua = $ua ?? (string) request()->header('User-Agent', '');
        if ($ua === '') {
            return '未知';
        }
        return match (true) {
            str_contains($ua, 'Windows NT 10') => 'Windows 10/11',
            str_contains($ua, 'Windows') => 'Windows',
            str_contains($ua, 'Macintosh') || str_contains($ua, 'Mac OS') => 'macOS',
            str_contains($ua, 'Android') => 'Android',
            str_contains($ua, 'iPhone') || str_contains($ua, 'iPad') => 'iOS',
            str_contains($ua, 'Linux') => 'Linux',
            default => '其他',
        };
    }

    /**
     * 从 UA 推断浏览器名称
     * Edge 需先于 Chrome 匹配，避免被 Chrome/ 抢先
     *
     * @param string|null $ua 为空时取当前请求 User-Agent
     */
    public function parseBrowser(?string $ua = null): string
    {
        $ua = $ua ?? (string) request()->header('User-Agent', '');
        if ($ua === '') {
            return '未知';
        }
        return match (true) {
            str_contains($ua, 'Edg/') => 'Edge',
            str_contains($ua, 'OPR/') || str_contains($ua, 'Opera') => 'Opera',
            str_contains($ua, 'Chrome/') && !str_contains($ua, 'Edg/') => 'Chrome',
            str_contains($ua, 'Firefox/') => 'Firefox',
            str_contains($ua, 'Safari/') && !str_contains($ua, 'Chrome/') => 'Safari',
            str_contains($ua, 'MSIE') || str_contains($ua, 'Trident/') => 'IE',
            default => '其他',
        };
    }
}