public override void Process(TagHelperContext context, TagHelperOutput output)
{
output.TagName = "Captcha";
output.TagMode = TagMode.StartTagAndEndTag;
var cs = context.Items.Any(p => (string)p.Key == "captchaScript");
if (!cs)
{
context.Items.Add("captchaScript", true);
RegisterBinPath();
}
var settings = new CaptchaSettings();
if (!string.IsNullOrEmpty(Id))
{
settings.Id = Id;
}
else
throw new Exception("Id is not set");
if (TextLength.HasValue)
{
settings.TextLength = TextLength.Value;
}
if (PicWidth.HasValue)
{
settings.PicWidth = PicWidth.Value;
}
if (PicHeight.HasValue)
{
settings.PicHeight = PicHeight.Value;
}
if (TextStyle.HasValue)
{
settings.TextStyle = TextStyle.Value;
}
if (CaptchaStyle.HasValue)
{
settings.CaptchaStyle = CaptchaStyle.Value;
}
if (ShowInput.HasValue)
{
settings.ShowInput = ShowInput.Value;
}
if (EnableAudio.HasValue)
{
settings.EnableAudio = EnableAudio.Value;
}
AppContext.Current.Session.Set(Extensions._captchaPrefix + settings.Id, settings);
var urlHelperFactory = (IUrlHelperFactory)_accessor.ActionContext.HttpContext.RequestServices.GetService(typeof(IUrlHelperFactory));
var urlHelper = urlHelperFactory.GetUrlHelper(_accessor.ActionContext);
StringBuilder sb = new StringBuilder();
if (!cs)
sb.Append(@"<style>.lol { text-decoration: none!important;cursor: pointer;} " +
"#capTbl tbody tr td a {color: black;}</style>");
if (settings.ShowInput)
sb.Append("<input id=\"" + settings.Id + "\" name=\"" + settings.Id + "\" type=\"text\" class=\"form-control\" style=\"float:left;width:" + settings.PicWidth + "px\"/>");
sb.Append("<div style=\"display: flex; float:left; align-items:center\">");
sb.Append("<img id=\"img" + settings.Id + "\" src='" + urlHelper.Content("~/captcha.ashx?id=" + settings.Id + "") + "' />");
sb.Append("<table id=\"capTbl\" style=\"color: black; margin-left:5px\">");
if (settings.EnableAudio)
sb.Append("<tr><td><a class=\"lol glyphicon glyphicon-volume-up\" title=\"Speak!\" style=\"background-image:url('" + urlHelper.Content("~/static.ashx?id=audio") + "');display:block;height:16px;width:16px\" " +
" onclick=\"play('" + settings.Id + "')\"></a></td></tr>");
sb.Append("<tr><td><a class=\"lol glyphicon glyphicon-refresh\" title=\"Refresh\" style=\"background-image:url('" + urlHelper.Content("~/static.ashx?id=refresh") + "');display:block;height:16px;width:16px\" " +
"onclick=\"refresh('" + settings.Id + "')\"></a></td></tr>");
sb.Append("</table></div>");
if (!cs)
{
sb.Append("<script> var audioDic = {};function refresh(id) {var aud = audioDic[id];if (aud) { aud.pause(); aud.currentTime = 0;}" +
"audioDic[id] = undefined;" +
"$(\"#img\"+id).attr('src', '" + urlHelper.Content("~/captcha.ashx") + "?id='+id+'&'+Math.random()) }");
sb.Append("var play = function(id) {var aud = audioDic[id];if (aud == undefined)" +
"aud = new Audio('" + urlHelper.Content("~/sayit.ashx") + "'+'?id=' + id);" +
"aud.pause();aud.currentTime = 0; aud.play(); audioDic[id] = aud;}");
sb.Append("</script>");
}
output.PreContent.SetHtmlContent(sb.ToString());
}
