using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Web.Mvc;
using Kendo.Mvc.UI;
using Kendo.Mvc.UI.Fluent;
using Kreta.Framework;

namespace Kreta.Web.Helpers
{
    public static class DropdownListExtensions
    {
        public static DropDownListBuilder KretaDropdownList(this HtmlHelper helper, string id, string url = null
            , string dataTextField = "Text", string datavalueField = "Value", string groupName = null, Type groupType = null)
        {
            if (groupName != null)
            {
                var dropdownlist = helper.Kendo().DropDownList()
                  .Name(id)
                  .DataTextField(dataTextField)
                  .DataValueField(datavalueField)
                  .DataSource(source =>
                  {
                      source.Custom()
                            .ServerFiltering(true)
                            .Transport(transport =>
                            {
                                transport.Read(
                                    read => read.Url(url));
                            })
                          .Group(g => g.Add(groupName, groupType));
                  });

                return dropdownlist;
            }
            else
            {
                var dropdownlist = helper.Kendo().DropDownList()
                  .Name(id)
                  .DataTextField(dataTextField)
                  .DataValueField(datavalueField)
                  .DataSource(source =>
                  {
                      source.Custom()
                            .ServerFiltering(true)
                            .Transport(transport =>
                            {
                                transport.Read(
                                    read => read.Url(url));
                            });
                  });

                return dropdownlist;
            }
        }

        public static DropDownListBuilder KretaDropdownList(this HtmlHelper helper, string id, IEnumerable<SelectListItem> selectList, IDictionary<string, object> htmlAttributes = null)
        {
            if (htmlAttributes == null)
                htmlAttributes = new Dictionary<string, object>();

            htmlAttributes.Add("data-labelmsg", id);

            var dropdown = helper.Kendo().DropDownList()
                .Name(id)
                .BindTo(selectList)
                .HtmlAttributes(htmlAttributes);

            return dropdown;
        }

        public static DropDownListBuilder KretaDropdownListFor<TModel, TProperty>(
            this HtmlHelper<TModel> helper,
            Expression<Func<TModel, TProperty>> expression,
            IEnumerable<SelectListItem> selectList,
            IDictionary<string, object> htmlAttributes = null,
            bool addOptionLabel = true

            )
        {
            var fieldName = ExpressionHelper.GetExpressionText(expression);
            var fullBindingName = helper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(fieldName);
            var metadata = ModelMetadata.FromLambdaExpression(expression, helper.ViewData);

            if (htmlAttributes == null)
                htmlAttributes = new Dictionary<string, object>();

            var validationAttributes = helper.GetUnobtrusiveValidationAttributes(fullBindingName, metadata);
            foreach (var key in validationAttributes.Keys)
            {
                if (key == "data-val-required")
                {
                    htmlAttributes.Add("title", validationAttributes[key].ToString());
                }
            }

            if (metadata.IsRequired)
            {
                htmlAttributes.Add("data-rule-required", "true");
                htmlAttributes.Add("data-labelmsg", metadata.DisplayName + " *");
            }
            else
            {
                htmlAttributes.Add("data-labelmsg", metadata.DisplayName);
            }

            selectList = selectList.Where(t => !string.IsNullOrWhiteSpace(t.Value)).ToList();

            var dropdown = helper.Kendo()
                .DropDownListFor(expression)
                .BindTo(selectList)
                .HtmlAttributes(htmlAttributes);

            if (addOptionLabel && selectList.Count() > 1)
            {
                dropdown.OptionLabel(StringResourcesUtil.GetString(364));
            }

            return dropdown;
        }

        public static DropDownListBuilder KretaDropdownListFor<TModel, TProperty>(this HtmlHelper<TModel> helper, Expression<Func<TModel, TProperty>> expression, string url, string dataTextField = "Text", string datavalueField = "Value", IDictionary<string, object> htmlAttributes = null)
        {
            var fieldName = ExpressionHelper.GetExpressionText(expression);
            var fullBindingName = helper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(fieldName);
            var metadata = ModelMetadata.FromLambdaExpression(expression, helper.ViewData);
            var value = metadata.Model;

            if (htmlAttributes == null)
                htmlAttributes = new Dictionary<string, object>();

            var validationAttributes = helper.GetUnobtrusiveValidationAttributes(fullBindingName, metadata);
            foreach (var key in validationAttributes.Keys)
            {
                if (key == "data-val-required")
                {
                    htmlAttributes.Add("title", validationAttributes[key].ToString());
                }
            }

            if (metadata.IsRequired)
            {
                htmlAttributes.Add("data-rule-required", "true");
                //htmlAttributes.Add("title", string.Format(StringResourcesUtil.GetString(3477), metadata.DisplayName));
                htmlAttributes.Add("data-labelmsg", metadata.DisplayName + " *");
            }
            else
            { htmlAttributes.Add("data-labelmsg", metadata.DisplayName); }

            var dropdown = helper.Kendo()
                .DropDownListFor(expression)
                .HtmlAttributes(htmlAttributes)
                .DataTextField(dataTextField)
                .DataValueField(datavalueField)
                .DataSource(source =>
                {
                    source.Custom()
                          .ServerFiltering(true)
                          .Transport(transport =>
                          {
                              transport.Read(
                                  read => read.Url(url));
                          }).Group(g => g.Add("Group", typeof(string)));
                });

            return dropdown;
        }

        public static MvcHtmlString RenderSearchPanel(this DropDownListBuilder helper)
        {
            List<SelectListItem> modSelectList = new List<SelectListItem>();
            modSelectList.Add(new SelectListItem() { Text = StringResourcesUtil.GetString(364), Value = "" });

            foreach (var item in helper.ToComponent().DataSource.Data)
            {
                var dli = (DropDownListItem)item;
                modSelectList.Add(new SelectListItem() { Text = dli.Text, Value = dli.Value, Selected = dli.Selected });
            }
            if (modSelectList.Count == 2)
                helper.BindTo(modSelectList);

            string labelMsg = "";
            foreach (var item in helper.ToComponent().HtmlAttributes)
            {
                if (item.Key == "data-labelmsg" && item.Value != null)
                    labelMsg = item.Value.ToString();
            }

            StringBuilder sb = new StringBuilder();
            sb.Append("<div class=\"searchInputRowHeight\"><div>");
            sb.Append("<label class=\"searchPanelInputLabel\" for=\"").Append(helper.ToComponent().Name).Append("\">").Append(labelMsg).Append("</label>");
            sb.Append("</div><div>");
            sb.Append(helper.ToHtmlString());
            sb.Append("</div></div>");

            return new MvcHtmlString(sb.ToString());
        }

        public static MvcHtmlString RenderSearchPanelSideBar(this DropDownListBuilder helper)
        {
            List<SelectListItem> modSelectList = new List<SelectListItem>();
            modSelectList.Add(new SelectListItem() { Text = StringResourcesUtil.GetString(364), Value = "" });

            foreach (var item in helper.ToComponent().DataSource.Data)
            {
                var dli = (DropDownListItem)item;
                modSelectList.Add(new SelectListItem() { Text = dli.Text, Value = dli.Value, Selected = dli.Selected });
            }
            if (modSelectList.Count == 2)
                helper.BindTo(modSelectList);

            string labelMsg = "";
            foreach (var item in helper.ToComponent().HtmlAttributes)
            {
                if (item.Key == "data-labelmsg" && item.Value != null)
                    labelMsg = item.Value.ToString();
            }

            StringBuilder sb = new StringBuilder();
            sb.Append("<div class=\"searchPanelRow\">");
            sb.Append("<div class=\"searchPanelRowTitle\">");
            sb.Append("<label class=\"searchPanelLabel\" for=\"").Append(helper.ToComponent().Name).Append("\">").Append(labelMsg).Append("</label>");
            sb.Append("</div>");
            sb.Append("<div class=\"searchPanelRowValue\">");
            sb.Append(helper.ToHtmlString());
            sb.Append("</div>");
            sb.Append("</div>");

            return new MvcHtmlString(sb.ToString());
        }

        public static MvcHtmlString RenderWithName(this DropDownListBuilder helper, int labelWidth = 6, int inputWidth = 6, bool allSizeSame = false, string tooltipResource = null)
        {
            string labelMsg = "";
            foreach (var item in helper.ToComponent().HtmlAttributes)
            {
                if (item.Key == "data-labelmsg" && item.Value != null)
                    labelMsg = item.Value.ToString();
            }

            var sb = new StringBuilder();

            if (string.IsNullOrWhiteSpace(tooltipResource))
                AddRenderWithNameBeginingFrame(sb, labelWidth, inputWidth, allSizeSame, helper.ToComponent().Name, labelMsg);
            else
                AddRenderWithNameTooltipBeginingFrame(sb, labelWidth, inputWidth, allSizeSame, helper.ToComponent().Name, labelMsg, tooltipResource);

            sb.Append(helper.ToHtmlString());
            AddRenderWithNameCloseingFrame(sb);

            return new MvcHtmlString(sb.ToString());
        }

        private static void AddRenderWithNameBeginingFrame(StringBuilder sb, int labelWidth, int inputWidth, bool allSizeSame, string controlName, string labelMsg)
        {
            sb.AppendFormat("<div class=\"{0}\">", BootsrapHelper.GetSizeClasses(labelWidth, allSizeSame));
            sb.AppendFormat("<label class=\"windowInputLabel\" for=\"{0}\">{1}</label>", controlName, labelMsg);
            sb.AppendFormat("</div><div class=\"{0} \">", BootsrapHelper.GetSizeClasses(inputWidth, allSizeSame));
        }

        private static void AddRenderWithNameTooltipBeginingFrame(StringBuilder sb, int labelWidth, int inputWidth, bool allSizeSame, string controlName, string labelMsg, string tooltipResource)
        {
            sb.AppendFormat("<div class=\"{0} kretaLabelTooltip \">", BootsrapHelper.GetSizeClasses(labelWidth, allSizeSame));
            sb.AppendFormat("<label class=\"windowInputLabel\" for=\"{0}\">{1}", controlName, labelMsg);
            sb.Append("&nbsp;<img class='kretaLabelTooltipImg' />");
            sb.AppendFormat("<span class=\"kretaLabelTooltipText\">{0}</span>", tooltipResource);
            sb.Append("</label>");
            sb.AppendFormat("</div><div class=\"{0} \">", BootsrapHelper.GetSizeClasses(inputWidth, allSizeSame));
        }

        private static void AddRenderWithNameCloseingFrame(StringBuilder sb)
        {
            sb.Append("</div>");
        }

        public static MvcHtmlString RenderWithName(this DropDownListBuilder helper, string label, int labelWidth = 6, int inputWidth = 6, bool allSizeSame = false, string tooltipResource = null)
        {
            var sb = new StringBuilder();

            if (string.IsNullOrWhiteSpace(tooltipResource))
                AddRenderWithNameBeginingFrame(sb, labelWidth, inputWidth, allSizeSame, helper.ToComponent().Name, label);
            else
                AddRenderWithNameTooltipBeginingFrame(sb, labelWidth, inputWidth, allSizeSame, helper.ToComponent().Name, label, tooltipResource);

            sb.Append(helper.ToHtmlString());
            AddRenderWithNameCloseingFrame(sb);

            return new MvcHtmlString(sb.ToString());
        }

        public static MvcHtmlString RenderWithoutName(this DropDownListBuilder helper, int inputWidth = 6, bool allSizeSame = false, string tooltipResource = null)
        {
            var sb = new StringBuilder();

            sb.AppendFormat($"<div class=\"{{0}} {(!string.IsNullOrWhiteSpace(tooltipResource) ? "kretaLabelTooltip" : "")}\">", BootsrapHelper.GetSizeClasses(inputWidth, allSizeSame));
            if (!string.IsNullOrWhiteSpace(tooltipResource))
            {
                helper.HtmlAttributes(new { style = "width: 94% !important;" });
            }
            sb.Append(helper.ToHtmlString());
            if (!string.IsNullOrWhiteSpace(tooltipResource))
            {
                sb.Append("&nbsp;<img class='kretaLabelTooltipImg' />");
                sb.AppendFormat("<span class=\"kretaLabelTooltipText\">{0}</span>", tooltipResource);
            }
            sb.Append("</div>");

            return new MvcHtmlString(sb.ToString());
        }
    }
}