public override void Process(TagHelperContext context, TagHelperOutput output)
{
output.TagMode = TagMode.StartTagAndEndTag;
output.TagName = null;
if (string.IsNullOrEmpty(Id))
{
throw new ArgumentException("id can't be null");
}
if (Id.ToLower() == "submit")
{
throw new ArgumentException("id can't be named submit");
}
Language ??= ViewContext.HttpContext.Features.Get <IRequestCultureFeature>()?.RequestCulture.UICulture.TwoLetterISOLanguageName;
var settings = ViewContext.HttpContext.RequestServices.GetRequiredService <IOptions <ReCaptchaSettings> >().Value;
var content = settings.Version switch
{
ReCaptchaVersion.V2Invisible => ReCaptchaGenerator.ReCaptchaV2Invisible(settings.SiteKey, Text, ClassName, Language, Callback, Badge),
ReCaptchaVersion.V3 => ReCaptchaGenerator.ReCaptchaV3(settings.SiteKey, Action, Language, Callback),
_ => ReCaptchaGenerator.ReCaptchaV2(settings.SiteKey, Size, Theme, Language, Callback, ErrorCallback, ExpiredCallback),
};
output.Content.AppendHtml(content);
}
/// <summary>
/// Helper extension to render the Google ReCaptcha v2/v3.
/// </summary>
/// <param name="helper">Html helper object.</param>
/// <param name="text">Text shown in on the button. Used in v2-invisible ReCaptcha.</param>
/// <param name="className">Custom class names added to the generated button of the v2-invisible ReCaptcha.</param>
/// <param name="size">Optional parameter, contains the size of the widget.</param>
/// <param name="theme">Google Recaptcha theme default is light.</param>
/// <param name="action">Google Recaptcha v3 <a href="https://developers.google.com/recaptcha/docs/v3#actions">Action</a></param>
/// <param name="language">Google Recaptcha <a href="https://developers.google.com/recaptcha/docs/language">Language Code</a></param>
/// <param name="id">Google ReCaptcha button id. This id can't be named 'submit' due to a naming bug. Used in v2-invisible ReCaptcha.</param>
/// <param name="badge">Badge parameter for the v2 invisible widget. Defaults to bottomright.</param>
/// <param name="callback">Google ReCaptcha success callback method. Used in v2 ReCaptcha.</param>
/// <param name="errorCallback">Google ReCaptcha error callback method. Used in v2 ReCaptcha.</param>
/// <param name="expiredCallback">Google ReCaptcha expired callback method. Used in v2 ReCaptcha.</param>
/// <returns>HtmlString with Recaptcha elements</returns>
public static IHtmlContent ReCaptcha(
this IHtmlHelper helper,
string text = "Submit",
string className = "",
string size = "normal",
string theme = "light",
string action = "homepage",
string language = null,
string id = "recaptcha",
string badge = "bottomright",
string callback = null,
string errorCallback = null,
string expiredCallback = null)
{
if (string.IsNullOrEmpty(id))
{
throw new ArgumentException("id can't be null");
}
if (id.ToLower() == "submit")
{
throw new ArgumentException("id can't be named submit");
}
language ??= helper.ViewContext.HttpContext.Features.Get <IRequestCultureFeature>()?.RequestCulture
.UICulture.TwoLetterISOLanguageName;
var settings = helper.ViewContext.HttpContext.RequestServices.GetRequiredService <IOptions <ReCaptchaSettings> >().Value;
switch (settings.Version)
{
default:
case ReCaptchaVersion.V2:
return(ReCaptchaGenerator.ReCaptchaV2(settings.SiteKey, size, theme, language, callback, errorCallback, expiredCallback));
case ReCaptchaVersion.V2Invisible:
return(ReCaptchaGenerator.ReCaptchaV2Invisible(settings.SiteKey, text, className, language, callback, badge));
case ReCaptchaVersion.V3:
return(ReCaptchaGenerator.ReCaptchaV3(settings.SiteKey, action, language, callback));
}
}