using System.Web.Mvc;

namespace DR.Topbar.Web.Helpers
{
    public class CrossDomainXhrAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            filterContext.RequestContext.HttpContext.Response.AddHeader("Access-Control-Allow-Origin", "*");
            filterContext.RequestContext.HttpContext.Response.AddHeader("Access-Control-Request-Method", "POST, GET, OPTIONS");
            filterContext.RequestContext.HttpContext.Response.AddHeader("Access-Control-Allow-Headers", "x-requested-with");

            if (filterContext.RequestContext.HttpContext.Request.HttpMethod.ToUpper() == "OPTIONS")
            {
                filterContext.RequestContext.HttpContext.Response.AddHeader("X-DR-Request-Terminated-By", "CrossDomainXhr-OPTIONS");
                filterContext.Result = new ContentResult();
            }

            base.OnActionExecuting(filterContext);
        }
    }
}