using System.Linq;
using System.Web;
using System.Web.Http.Results;
using System.Web.Mvc;
using hbehr.recaptcha;
using log4net;
using Umbraco.Web.Mvc;

namespace LeafWeb.WebCms.Controllers
{
    public class ValidateRecaptchaAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext context)
        {
            if (context != null)
            {
                //https://github.com/henriqb/ReCaptcha-Asp-Net
                //https://stackoverflow.com/questions/58328542/trying-the-samesite-attribute-fix-for-the-google-recaptcha-v2-warning-on-chrome

                var userResponse = context.RequestContext.HttpContext.Request.Params["g-recaptcha-response"];
                var validCaptcha = userResponse != null && ReCaptcha.ValidateCaptcha(userResponse);
                if (!validCaptcha)
                {
                    context.Result = new System.Web.Mvc.RedirectResult("/error");
                }
            }
            base.OnActionExecuting(context);
        }
    }
}