using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Text;

namespace Engine.Http
{
	/// <summary>Http消息请求对象</summary>
	public class HttpRequest
	{

		public HandlerRequestTimeout requestTimeout;

		private const int ParamsMax = 30;

		/// <summary>请求地址</summary>
		private string mUrl = "";
		/// <summary>请求类型编号</summary>
		private int nCode = 0;
		/// <summary>参数的键列表</summary>
		private ObjectArray mParamKetList = new ObjectArray(ParamsMax);
		/// <summary>参数的值列表</summary>
		private ObjectArray mParamValueList = new ObjectArray(ParamsMax);
		/// <summary>HTTP请求的方式，从HttpMethod中的静态常量取值</summary>
		public string httpMethod { set; get; }
		/// <summary>是否启用MD5加密</summary>
		public bool isMD5 { set; get; }
		/// <summary>启用MD5加密时的加密值</summary>
		public char MD5Encode = '0';
		/// <summary>包含url和参数的字符串</summary>
		private string mRquestParamConetent;

		/// <summary>构造函数</summary>
		public HttpRequest()
		{

		}

		/// <summary>创建请求参数对象</summary>
		public static HttpRequest OnCreateRequest()
		{
			return new HttpRequest();
		}

		/// <summary>重置消息参数对象</summary>
		public void Reset()
		{
			this.ClearParam();
			mRquestParamConetent = null;
			requestTimeout = null;
		}

		/// <summary>请求地址</summary>
		public string URL
		{
			get { return mUrl; }
			set { mUrl = value; }
		}

		/// <summary>请求类型编号</summary>
		public int Code
		{
			get { return nCode; }
			set { nCode = value; }
		}

		/// <summary>
		/// 设置纯JSON的参数
		/// </summary>
		/// <param name="value"></param>
		public void SetJSONParamContent(string value)
		{
			CDebug.Log("HttpRequest SetJSONParamContent: 设置了纯json作为参数，内容如下 " + value);
			mRquestParamConetent = value;
		}

		/// <summary>请求的参数体</summary>
		public string RequestParamContent
		{
			get
			{
				if (mRquestParamConetent == null)
				{
					StringBuilder strContent = new StringBuilder();
					//参数体
					StringBuilder strMd5 = new StringBuilder();
					int paramConst = mParamKetList.ElementLength;
					for (int i = 0; i < paramConst; i++)
					{
						this.ParamAddStringBuilder(strContent, mParamKetList.Get<string>(i), mParamValueList.Get<string>(i),  i != 0);

						strMd5.Append(mParamValueList.Get<string>(i));
					}
					if (isMD5)
					{
						//MD5相关参数
						//this.ParamAddStringBuilder(strContent, MD5Encode, strMd5.ToString());
						this.ParamAddStringBuilder(strContent, HttpConstConfig.KEY_SIG, this.GetMd5String(strMd5.ToString()));
					}
					//最后一个参数验证串
					strMd5.Append(HttpConstConfig.WEB_HTTP_SECRET_KEY);
					mRquestParamConetent = strContent.ToString();
				}
				//返回
				return mRquestParamConetent;
			}
		}

		public void ResetRequestParamContent()
		{
			mRquestParamConetent = null;
		}

		/// <summary>参数添加到消息体内</summary>
		private void ParamAddStringBuilder(StringBuilder strContent, string key, string value, bool isApart = true)
		{
			if (isApart)
			{
				strContent.Append("&");
			}

			strContent.Append(key);
			strContent.Append("=");
			strContent.Append(value);
		}

		/// <summary>参数个数</summary>
		public int ParamConst
		{
			get
			{
				int nConst = 0;
				int paramConst = mParamKetList.ElementLength;
				for (int i = 0; i < paramConst; i++)
				{
					if (mParamKetList.Get<string>(i) != null)
					{
						nConst++;
					}
				}
				return nConst;
			}
		}

		/// <summary>添加参数</summary>
		public void AddParam(string key, string value)
		{
			mParamKetList.Add(key);
			mParamValueList.Add(value);
		}

		/// <summary>删除参数</summary>
		public void DelParam(string key)
		{
			int paramConst = mParamKetList.ElementLength;
			for (int i = 0; i < paramConst; i++)
			{
				if (mParamKetList.Get<string>(i) == key)
				{
					mParamKetList.Set(i, null);
					mParamValueList.Set(i, null);
					break;
				}
			}
		}

		/// <summary>清楚参数</summary>
		public void ClearParam()
		{
			mParamKetList.SetEmpty();
			mParamValueList.SetEmpty();
		}

		///<summary>获取MD5码</summary>
		private string GetMd5String(string strConetent)
		{
			byte[] result = System.Text.Encoding.ASCII.GetBytes(strConetent);
			System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
			byte[] output = md5.ComputeHash(result);
			md5.Clear();

			StringBuilder retStr = new StringBuilder();
			for (int i = 0; i < output.Length; i++)
			{
				retStr.Append(System.Convert.ToString(output[i], 16).PadLeft(2, MD5Encode));
			}
			return retStr.ToString().PadLeft(32, MD5Encode);
		}

		public string URLAndParamsForGet
		{
			get
			{
				return URL + "?" + RequestParamContent;
			}

		}
	}
}