using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Threading;

using Sog;
using SimpleHttpServer;

namespace Operation
{
    /// <summary>
    /// http请求参数列表
    /// </summary>
    public class HttpQueryParams
	{
		public Dictionary<string, string> m_map = new Dictionary<string, string>();

		public HttpQueryParams(string url, bool replaceAdd = true)
        {
            Parse(url, replaceAdd);
		}

        public HttpQueryParams()
        {

        }

        private void Parse(string url,bool replaceAdd = true)
        {
            if(url == null)
            {
                return;
            }
			
			int indexend = url.IndexOf('?');

			string paramStr = url.Substring(indexend + 1, url.Length - (indexend + 1));

			string[] allParams = paramStr.Split('&');

			foreach(var param in allParams)
			{
				string[] namevalue = param.Split('=');
				if (namevalue != null && namevalue.Length >= 2)
				{
					TraceLog.Trace("HttpQueryParams.Parse namevalue[1] {0}", namevalue[1]);

                    string value = "";
                    for (int i = 1; i < namevalue.Length; i++)
                    {
                        namevalue[i] = namevalue[i].Replace("+", "%20");
                        value += namevalue[i];
                        if(namevalue.Length > 2 & i != namevalue.Length - 1)
                        {
                            value += "=";
                        }
                    }

                    value = Uri.UnescapeDataString(value);

                    if (m_map.ContainsKey(namevalue[0]))
					{
						m_map[namevalue[0]] = value; //等同于 title=1654sdf
					}
					else
					{
						m_map.Add(namevalue[0], value);
					}
				}
			}
        }

        public string GetValue(string name)
        {
            if(m_map.ContainsKey(name))
            {
                return m_map[name];
            }

            return null;
        }

        public string GetValue(string name, string defaultValue = null)
        {
	        if (m_map.ContainsKey(name))
	        {
		        return m_map[name];
	        }

	        return defaultValue;
        }
        
        public void AddNameValue(string name,string value)
        {
            if (m_map.ContainsKey(name))
            {
                m_map[name] = value;
            }
            else
            {
                m_map.Add(name, value);
            }
        }

		public int Count { get { return m_map.Count;  } }
    }
}