using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Mvc;
using System.Linq.Expressions;

namespace Bowin.Web.Controls.Mvc
{
    public static class RichTextExtensions
    {
        public static MvcHtmlString RichText(this HtmlHelper htmlHelper,
            RichTextOptions richTextOptions,
            System.Collections.Generic.IDictionary<string, string> htmlAttributes = null)
        {
            return MvcHtmlString.Create(Bowin.Web.Controls.Mvc.RichText.CreateControl(richTextOptions, htmlAttributes).Render());
        }

        public static MvcHtmlString RichTextFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper,
            Expression<Func<TModel, TProperty>> expression,
            RichTextOptions richTextOptions,
            System.Collections.Generic.IDictionary<string, string> htmlAttributes = null)
        {
            if (expression == null)
            {
                throw new ArgumentNullException("expression");
            }
            ModelMetadata modelMetadata = ModelMetadata.FromLambdaExpression<TModel, TProperty>(expression, htmlHelper.ViewData);

            //获取字段名称，对应标签的name
            string fullHtmlFieldName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText(expression));
            richTextOptions.ID = fullHtmlFieldName;
            richTextOptions.Name = fullHtmlFieldName;
            richTextOptions.Value = Convert.ToString(modelMetadata.Model);

            //MVC验证支持
            var validateAttributes = htmlHelper.GetUnobtrusiveValidationAttributes(fullHtmlFieldName, modelMetadata);
            if (htmlAttributes == null)
            {
                htmlAttributes = new Dictionary<string, string>();
            }
            validateAttributes.ToList().ForEach(x => htmlAttributes.Add(x.Key, x.Value.ToString()));

            return MvcHtmlString.Create(Bowin.Web.Controls.Mvc.RichText.CreateControl(richTextOptions, htmlAttributes).Render());
        }
    }
}