<?php

/**
 * 工具类
 * @author      CairBin(Xinyi Liu)
 */
class XCaptcha_Utils
{
    private static $captchaMap = [
        "hcaptcha" => ["h-captcha-response", "https://hcaptcha.com/siteverify"],
        "cloudflare" => ["cf-turnstile-response", "https://challenges.cloudflare.com/turnstile/v0/siteverify"],
        "recaptcha" => ["g-recaptcha-response", "https://recaptcha.net/recaptcha/api/siteverify"]
    ];

    private static $cdnUrls = [
        "hcaptcha" => "https://hcaptcha.com/1/api.js?onload=beforeCheckCallback",
        "cloudflare" => "https://challenges.cloudflare.com/turnstile/v0/api.js?onload=beforeCheckCallback",
        "recaptcha" => "https://recaptcha.net/recaptcha/api.js?onload=beforeCheckCallback",
        "geetest" => "https://static.geetest.com/static/js/gt.0.4.9.js",
        "altcha" => "/usr/plugins/XCaptcha/static/altcha.min.js"
    ];

    /**
     * 判断是否是移动端
     * @static
     * @param  string $userAgent 用户标识
     * @return boolean   是否是移动端的判断结果
     * @copyright noisky(https://github.com/noisky/typecho-plugin-geetest/blob/master/Plugin.php)
     */    
    public static function isMobile($userAgent)
    {
        return preg_match('/android.+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i', $userAgent) || preg_match('/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(di|rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i', substr($userAgent, 0, 4));
    }

    /**
     * 获取token和验证接口URL
     * @static
     * @param string $captchaChoosen    验证工具类型
     * @param string $verifyUrl         自定义验证接口
     * @return Array<string>            结果
     */    
    public static function getCaptchaTokenAndUrl($captchaChoosen, $verifyUrl)
    {
        $postToken = $_POST[self::$captchaMap[$captchaChoosen][0]] ?? '';
        // 如果verifyUrl为空字符串就使用captchaMap中默认的
        $urlPath = $verifyUrl == '' ? self::$captchaMap[$captchaChoosen][1] : $verifyUrl;

        return [$postToken, $urlPath];
    }

    /**
     * 获取渲染验证码的脚本
     * @static
     * @param  string $captchaType   验证工具类型
     * @param  string $cdnUrl        自定义CDN地址
     * @param  string $widgetColor   验证码主题颜色
     * @param  string $widgetSize    验证码尺寸类型
     * @param  string $captchaId     公钥
     * @return Array<string>         [HTML标签, cdnUrl]
     */    
    public static function getCaptchaScript($captchaType, $cdnUrl, $widgetColor, $widgetSize, $captchaId)
    {
		if($captchaType == 'hcaptcha' || $captchaType == 'recaptcha'){
			if($widgetColor == 'auto') 		$widgetColor = 'light';
			if($widgetSize == 'flexible') 	$widgetSize = 'normal';
		}
        if($cdnUrl == '') $cdnUrl = self::$cdnUrls[$captchaType];
        
        $scriptTemplates = [
            "hcaptcha" => "<div class='h-captcha check-label' data-sitekey='{$captchaId}' data-theme='{$widgetColor}' data-size='{$widgetSize}' data-callback='checkCallback'></div>",
            "cloudflare" => "<div class='cf-turnstile check-label' data-sitekey='{$captchaId}' data-theme='{$widgetColor}' data-size='{$widgetSize}' data-callback='checkCallback'></div>",
            "recaptcha" => "<div class='g-recaptcha check-label' data-sitekey='{$captchaId}' data-theme='{$widgetColor}' data-size='{$widgetSize}' data-callback='checkCallback'></div>",
            "geetest" => "<div id='gt-captcha' class='check-label'></div>",
            "altcha" => '<altcha-widget id="altcha" class="check-label" challengeurl="/index.php/action/xcaptcha?do=ajaxResponseCaptchaData&type=altcha" hidefooter hidelogo strings=\'{"error": "验证失败，请稍后重试","expired": "验证码已过期","label": "请勾选进行验证","verified": "验证成功","verifying": "正在验证...","waitAlert": "请稍候，正在验证"}\'></altcha-widget>'];

        return [$scriptTemplates[$captchaType] ?? '', $cdnUrl];
    }
}