using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
using System.Web.Mvc;
using System.Web.UI.WebControls;
using System.Web.Mvc.Html;
using System.Linq.Expressions;
using System.Web.Routing;
using Sleis.Models;

namespace Sleis.HtmlHelpers
{
    public static class AutoCompleteHelper
    {
        public static MvcHtmlString Autocomplete(this HtmlHelper htmlHelper, string name, object value, bool selectOnly, string targetName, string type, int typeYear, int size, int minLength, object htmlAttributes)
        {            
            MvcHtmlString textBox = InputExtensions.TextBox(htmlHelper, name + ".AutoComplete", value, SetAutoCompleteAttributes(selectOnly, targetName, type, typeYear, size, minLength,htmlAttributes));
            MvcHtmlString hiddenField = InputExtensions.Hidden(htmlHelper, name, value, new { @class = targetName });
            return RenderMultipleControls(textBox, hiddenField);
        }
        public static MvcHtmlString AutocompleteFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, bool selectOnly, string targetName, string type, int typeYear, int size, int minLength, object htmlAttributes)
        {
            string fullHtmlFieldName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText(expression));
            var metaData = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
            object value = metaData.Model;    
            MvcHtmlString textBox =  InputExtensions.TextBox(htmlHelper, fullHtmlFieldName + ".AutoComplete", value, SetAutoCompleteAttributes(selectOnly, targetName, type, typeYear, size, minLength, htmlAttributes));
            MvcHtmlString hiddenField = InputExtensions.HiddenFor(htmlHelper, expression, new{@class = targetName});
            return RenderMultipleControls(textBox, hiddenField);
        }

        public static MvcHtmlString AutocompleteFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, object value, bool selectOnly, string targetName, string type, int typeYear, int size, int minLength, object htmlAttributes)
        {
            string fullHtmlFieldName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText(expression));
            var metaData = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);            
            MvcHtmlString textBox = InputExtensions.TextBox(htmlHelper, fullHtmlFieldName + ".AutoComplete", value, SetAutoCompleteAttributes(selectOnly, targetName, type, typeYear, size, minLength, htmlAttributes));
            MvcHtmlString hiddenField = InputExtensions.HiddenFor(htmlHelper, expression, new { @class = targetName });
            return RenderMultipleControls(textBox, hiddenField);
        }

        private static IDictionary<string, object> SetAutoCompleteAttributes(bool selectOnly, string targetName, string type, int typeYear, int size, int minLength, object htmlAttributes)
        {
            IDictionary<string, object>attributes = new RouteValueDictionary(htmlAttributes);
            attributes["class"] += " autocomplete"; //append autocomplete to class attribute  
            attributes.Add("selectOnly", selectOnly);
            attributes.Add("data-autocomplete-target", targetName);
            attributes.Add("data-autocomplete-type-year", typeYear);
            attributes.Add("data-autocomplete-size", size);
            attributes.Add("data-autocomplete-min-len", minLength );
            return attributes;
        }
        private static MvcHtmlString RenderMultipleControls(params MvcHtmlString[] controls)
        {           
            StringBuilder sb = new StringBuilder();
            foreach(MvcHtmlString c in controls)
            {
                sb.Append(c.ToString());
            }
            return MvcHtmlString.Create(sb.ToString());
            
        }
    }
}