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

namespace Com.Piwigo.Lib.Proxy.Helper
{
    public static class PwgProxyReponseHelper
    {
        public static void buildQueryFromArray<T>(List<T> values, String paramName, ref Boolean firstOcc, StringBuilder queryStringBuilder)
        {
            String FormatString = String.Empty;
            if (values != null)
            {
                if (values.Count == 1)
                {
                    FormatString = "{0}={1}";
                }
                else
                {
                    FormatString = "{0}[]={1}";
                }
                if (firstOcc != true)
                {
                    FormatString = String.Format("&{0}", FormatString);
                }

                foreach (T occurance in values)
                {
                    queryStringBuilder.AppendFormat(FormatString, paramName, HttpUtility.UrlEncode(occurance.ToString().ToLower()));
                    firstOcc = false;
                }

            }
        }

        public static void buildQueryFromValue<T>(Nullable<T> nullableValue, String paramName, ref Boolean firstOcc, StringBuilder queryStringBuilder)
            where T: struct 
        {
            if (nullableValue.HasValue)
            {
                buildQueryFromValue<T>(nullableValue.Value, paramName, ref firstOcc, queryStringBuilder);
            }
        }

        public static void buildQueryFromValue<T>(T value, String paramName, ref Boolean firstOcc, StringBuilder queryStringBuilder)
        {
            String FormatString = String.Empty;
            if (value != null)
            {
                FormatString = "{0}={1}";
                if (firstOcc != true)
                {
                    FormatString = String.Format("&{0}", FormatString);
                }

                queryStringBuilder.AppendFormat(FormatString, paramName, HttpUtility.UrlEncode(value.ToString().ToLower()));
                firstOcc = false;
            }
        }
    }
}