$("#createLetter").on("click", CreateLetter);

function CreateLetter() {
  $.ajax({
    type: "POST",
    url: "/Letters/CreateLetter",
    data: {
      EntityType: "@overview.EntityType",
      EntityId: @overview.EntityId,
      Recipient: $("#Recipient").val(),
      TemplatesLocation: $("#templatePath").val(),
      SaveAs: $("#saveAs").val()
    },
    async: false,
    success: openLetter
  });
}

function openLetter(data) {
    openFile(data);
    window.location.reload(false);

}

[ValidateInput(false)]
    [HttpPost]
    public JsonResult CreateLetter(CreateLetter input)
    {
        Recipient obj = logic.SplitRecipientInput(input.Recipient);

        input.RecipientId = obj.RecipientId;
        input.RecipientType = obj.Type;

        input.Username = Helpers.GetLoggedInUser();

        var x = logic.CreateLetter(input);

        if (x.Success == 1)
        {

            return Json(x.Data, JsonRequestBehavior.AllowGet);
        }

        else
        {
            return Json("Error", JsonRequestBehavior.AllowGet);
        }
    }

public CreatedLetter CreateLetter(CreateLetter input)
    {
        CreatedLetter response = new CreatedLetter();
        Parameters.Add("TemplatePath", GetApiValue(input.TemplatesLocation));
        Parameters.Add("EntityType", GetApiValue(input.EntityType));
        Parameters.Add("EntityId", GetApiValue(input.EntityId));
        Parameters.Add("RecipientId", GetApiValue(input.RecipientId));
        Parameters.Add("RecipientType", GetApiValue(input.RecipientType));
        Parameters.Add("Username", GetApiValue(input.Username));
        Parameters.Add("SaveAs", GetApiValue(input.SaveAs));

        response = Api.WebRequest<CreatedLetter>("CreateLetters", Parameters, Method.POST) as CreatedLetter;

        return response;
    }

[ActionName("CreateLetter")]
    [HttpPost]
    public ApiResponse CreateLetter(LetterCreateInput input)
    {
        try
        {
            LetterTemplateLogic logic = new LetterTemplateLogic();

            Random r = new Random();
            var randomId = r.Next(100000, 999999);

            string fileName = string.Format("{0} - {1}", randomId, input.SaveAs);
            input.SaveAs = fileName;

            // Get all objects for Letter
            List<object> objs = logic.TemplateObjectsRetriever(input.EntityId, input.EntityType, input.Username, randomId);

            objs.Add(logic.GetRecipient(input.RecipientId, input.RecipientType));

            // Get save location
            string saveLocation = logic.LetterLocationResolver(input.EntityId, input.EntityType);

            var data = logic.OpenAndUpdateTemplate(objs, input.TemplatePath, input.SaveAs, saveLocation, FileExtension);

            AttachmentInput letterAttachment = new AttachmentInput();
            letterAttachment.Id = input.EntityId;
            letterAttachment.FileTypeId = 1;
            letterAttachment.Path = data;
            letterAttachment.Username = input.Username;
            letterAttachment.Description = fileName;
            letterAttachment.EntityType = input.EntityType;

            logic.InsertLetterAttachment(letterAttachment);

            return ApiResponse.Return(data);
        }
        catch (Exception ex)
        {
            return ApiResponse.Error(ex);
        }
    }