using System;
using System.Collections.Generic;
using System.Web.Mvc;
using Kendo.Mvc.UI;

namespace Kreta.Web.Helpers
{
    public static class AutoCompleteExtensions
    {
        public static Kendo.Mvc.UI.Fluent.AutoCompleteBuilder KretaAutoCompleteFor<TModel, TProperty>(this HtmlHelper<TModel> helper, System.Linq.Expressions.Expression<Func<TModel, TProperty>> expression, string id = "", string className = "")
        {
            var inputName = ExpressionHelper.GetExpressionText(expression);
            var name = helper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(inputName);
            var val = ModelMetadata.FromLambdaExpression(expression, helper.ViewData).Model;

            if (helper.ViewData.ModelState[name] != null && helper.ViewData.ModelState[name].Errors.Count > 0)
                className = string.Format("{0} input-validation-error", className);

            var autocomplete = helper.Kendo().AutoCompleteFor(expression)
                .Filter(FilterType.Contains)
                .HighlightFirst(true).DataTextField("Text");

            if (!string.IsNullOrWhiteSpace(className) || !string.IsNullOrWhiteSpace(id))
            {
                var attributes = new Dictionary<string, object>();
                if (!string.IsNullOrWhiteSpace(className))
                    attributes.Add("class", className.Trim());
                if (!string.IsNullOrWhiteSpace(id))
                    attributes.Add("id", id);
                //attributes.Add("style", "height:17px");
                autocomplete.HtmlAttributes(attributes);
            }

            return autocomplete;
        }
    }
}