using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Text;
using Sleis.Utility;
using Sleis.Models;

namespace Sleis.HtmlHelpers
{
    public static class UnitOfMeasureHelper
    {
        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T">Epa Object</typeparam>
        /// <param name="html"></param>
        /// <param name="value">Value </param>
        /// <param name="uomCode">Unit of Measure</param>
        /// <returns></returns>
        public static string UnitOfMeasure<T>(this HtmlHelper html, string value, string uomCode) where T:EpaBaseObject
        {
            StringBuilder sb = new StringBuilder();
            //el.CurrentReleasePoint.GasVel %></span> velocity <%: LookupUtility.Get<EpaReleasePointGasVel>(Model.CurrentReleasePoint.GasVelUomCode).Value %>
            if (!String.IsNullOrEmpty(value))
            {
                sb.Append(value); //actual value
                sb.Append(" "); //space
                if (!String.IsNullOrEmpty(uomCode))
                {
                    sb.Append(LookupUtility.Get<T>(uomCode).Value.ToUpper()); //unit of measure descriptor | always uppercase
                }
            }
            return sb.ToString();
        }

        /// <summary>
        /// Returns a value and its corresponding value only if the value is present.  
        /// </summary>
        /// <param name="html"></param>
        /// <param name="value">Value</param>
        /// <param name="label">Label to display if value is present</param>
        /// <returns></returns>
        public static string ValueLabel(this HtmlHelper html, object value, string label)
        {
            StringBuilder sb = new StringBuilder();
            //string stringVal = value.ToString();
            if (value!=null && !String.IsNullOrEmpty(value.ToString()))
            {
                sb.Append(value.ToString());
                sb.Append(" ");
                if (!String.IsNullOrEmpty(label))
                {
                    sb.Append(label.ToUpper()); //always display uppercase
                }
            }
            return sb.ToString();
        }
    }
}