using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Xml;
using UnityEngine.UI;

public class AssetGame_ResourceUpdate : AssetGame_Base<AssetGame_ResourceUpdate> 
{

   
    /// <summary>
    /// 需要下载的总资源数
    /// </summary>
    private int MaxBundleNum = 0;

    /// <summary>
    /// 需要下载的资源总大小
    /// </summary>
    private int MaxBundleSize = 0;

    /// <summary>
    /// 废弃的变量
    /// </summary>
    private float mProgress = 0f;

    /// <summary>
    /// 在下载更新界面显示的进度条
    /// </summary>
    public Slider mSlider = null;

    /// <summary>
    /// 在下载更新界面显示的进度数字
    /// </summary>
    public Text mSliderText = null;

    /// <summary>
    /// 每下载一个文件,占总额度的百分比
    /// </summary>
    private float mPerPropress = 0f;

    /// <summary>
    ///需要下载的资源
    /// </summary>
    private List<string> NeedDownFiles=new List<string>();

    /// <summary>
    /// 增加新要下载的资源名
    /// </summary>
    /// <param name="nameString"></param>
    public void AddLoadRes(string nameString)
    {
        if (!NeedDownFiles.Contains(nameString))
        {
            NeedDownFiles.Add(nameString);
        }
    }

    /// <summary>
    /// 废弃的功能
    /// </summary>
    public float GetProgress
    {
     get {

            return mProgress ;
        }
    }
    /// <summary>
    /// 获得剩余需要下载的资源数量
    /// </summary>
    public int GetNeedDownFilesCount
    {
        get { return NeedDownFiles.Count; }
    }

    /// <summary>
    /// 获得需要下载的总资源数量
    /// </summary>
    public int GetMaxBundleNum
    {
        get { return MaxBundleNum; }
    }

    /// <summary>
    /// 设置需要下载的资源总数
    /// </summary>
    public int SetMaxBundleNum
    {
        set { MaxBundleNum = value; }
    }

    /// <summary>
    /// 获取资源总大小
    /// </summary>
    public int GetMaxBundleSize
    {
        get { return MaxBundleSize; }
    }

    /// <summary>
    /// 设置资源总大小
    /// </summary>
    public int SetMaxBundleSize
    {
        set { MaxBundleSize = value; }
    }




    /// <summary>
    /// 将赋值进度条
    /// </summary>
    /// <param name="sld"></param>
    public void SetSlider(Slider sld,Text txt)
    {
        mSlider = sld;
        mSlider.value = 0;
        mSliderText = txt;
    }




    /// <summary>
    /// 依次加载需要更新的资源  
    /// </summary>
    public void DownLoadRes(string serverVersion)
    {

        if (NeedDownFiles.Count == 0)
        {
           
            AssetGame_VersionManager.Ins.SetUpdateLocalVersionFile();
            return;
        }
         string ServerMD5;
         string ServerResSize;
        string file = NeedDownFiles[0];

        LogHelper.Log("还有" + NeedDownFiles .Count  +"个未更新资源，总数" + MaxBundleNum + "个。");

        
        float  sizemega = 0;

        sizemega =(float ) MaxBundleSize / 1000000;
        LogHelper.Log(string .Format ("剩余{0:N1}", sizemega) + string .Format ("兆，{0:N0}" , MaxBundleSize) + "字节需要下载");
        LogHelper.Log(AssetConfig_GlobalSetting.strServerUrl + file);
        string cdnpath = AssetConfig_GlobalSetting.strServerUrl + serverVersion + "/";
        AssetSystem_CoroutineProvider.Instance.StartCoroutine(DownLoad(cdnpath + file, delegate(WWW w)
         {

             if (w.error != null)
             {
                 LogHelper.Log("没有更新到资源 file=" + file);
                 LogHelper.Log(w.error);
             }
             else
             {
                 AssetGame_VersionManager.Ins.ServerResVersion.TryGetValue(file ,out  ServerMD5);
                 AssetGame_VersionManager.Ins.ServerResSizeVersion.TryGetValue(file, out  ServerResSize);
                 LogHelper.Log("将下载的资源替换本地的资源   ");
                 //将下载的资源替换本地的资源    
             //    AssetSystem_Log.Ins.Log("wenjian " + file);
               //  LogHelper.Log("wenjian "+  file);
                 
                 MaxBundleSize -= int.Parse (ServerResSize);
                 //LogHelper.Log("当前数据" + ServerResSize + "/"+ MaxBundleSize );
                 AssetSystem_AndroidFileHelper.Instance.ReWriteFileByByte(file, w.bytes);
                 AddOrModifyXml(file,ServerMD5,ServerResSize);
      
             }
             NeedDownFiles.RemoveAt(0);
             DownLoadRes(serverVersion);
         }));
    }


    private void AddOrModifyXml(string strFilename,string strMD5,string strSize)
    {
        bool find = false;

        string savePath = AssetConfig_GlobalSetting.strLocalSavePath;
        XmlDocument XmlDoc = new XmlDocument();
        XmlDoc.Load(savePath + "/VersionMD5.txt");
        XmlNodeList nodeList = XmlDoc.SelectSingleNode("Files").ChildNodes;//获取Files节点的所有子节点    
        foreach (XmlNode xn in nodeList)//遍历所有子节点   
        {
            XmlElement xmlElem = (XmlElement)xn;//将子节点类型转换为XmlElement类型   
            if (xmlElem.GetAttribute("FileName") == strFilename)//如果genre属性值为“李赞红”   
            {
                xmlElem.SetAttribute("FileName", strFilename);
                xmlElem.SetAttribute("MD5", strMD5);
                xmlElem.SetAttribute("Size", strSize);
                find = true;
            }
        }
        if (!find)
        {
            XmlNode XmlRoot = XmlDoc.SelectSingleNode("Files");
            XmlElement xmlElem = XmlDoc.CreateElement("File");
            xmlElem.SetAttribute("FileName", strFilename);
            xmlElem.SetAttribute("MD5", strMD5);
            xmlElem.SetAttribute("Size", strSize);
            XmlRoot.AppendChild(xmlElem);
          
        }
        XmlDoc.Save(savePath + "/VersionMD5.txt");
        XmlDoc = null;
    }



    /// <summary>
    /// 读取string 
    /// 逐行读入，以“，”分割
    /// </summary>
    /// <param name="content"></param>
    /// <param name="dict"></param>
    public void ToParseVersionFile(string content, Dictionary<string, string> dict, string log)
    {
        if (content == null || content.Length == 0)
        {
            LogHelper.Log(log + " is null");
            return;
        }
        
        string[] items = content.Split(new char[] { '\n' });
        foreach (string item in items)
        {
            string[] info = item.Split(new char[] { ',' });
            if (info != null && info.Length == 2)
            {

                dict.Add(info[0], info[1]);
            }
        }
 
    }
    /// <summary>
    /// 读取XmlDocument
    /// 固定格式node,以属性添加数据【FileName】+【MD5】
    /// </summary>
    /// <param name="content"></param>
    /// <param name="dict"></param>
    /// <param name="log"></param>
    /// <returns></returns>
    public void ToParseVersionFileXml(string content, Dictionary<string, string> dict, string log)
    {
        if (content == null || content.Length == 0)
        {
            LogHelper.Log(log + " is null");
            return;
        }
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.LoadXml(content);

        LogHelper.Log("ParseVersionFileXml:1");
        //获取根节点
        XmlElement rootNodeList = xmlDoc.DocumentElement;//Response
        //获取FlightDatas节点
        XmlNodeList xmlChildFlightNodeList = rootNodeList.GetElementsByTagName("Files");
        LogHelper.Log("ParseVersionFileXml:2");

        foreach (XmlNode node in rootNodeList.ChildNodes)
        {
            //node.Attributes[]
            string fileName = node.Attributes["FileName"].Value.ToString();
            string fileMd5 = node.Attributes["MD5"].Value.ToString();
            dict.Add(fileName, fileMd5);
            
        }
        LogHelper.Log("ParseVersionFileXml:3");

    }


    /// <summary>
    /// 读取XmlDocument
    /// 固定格式node,以属性添加数据【FileName】+【MD5】
    /// </summary>
    /// <param name="content"></param>
    /// <param name="dict"></param>
    /// <param name="log"></param>
    /// <returns></returns>
    public void ToParseVersionFileSizeXml(string content, Dictionary<string, string> dict, string log)
    {
        if (content == null || content.Length == 0)
        {
            LogHelper.Log(log + " is null");
            return;
        }

        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.LoadXml(content);

        //获取根节点
        XmlElement rootNodeList = xmlDoc.DocumentElement;//Response
        //获取FlightDatas节点
        XmlNodeList xmlChildFlightNodeList = rootNodeList.GetElementsByTagName("Files");

        foreach (XmlNode node in rootNodeList.ChildNodes)
        {

            //node.Attributes[]
            string fileName = node.Attributes["FileName"].Value.ToString();
            string fileSize = node.Attributes["Size"].Value.ToString();
          //  LogHelper.Log(fileName + " ***** " + fileSize);
            dict.Add(fileName, fileSize);
           // LogHelper.LogError(fileName + "/" + fileSize );
        }

    }
 
    /// <summary>
    /// 加载这里,加入了和进度条有关的,这个以前测试过,是可以用的.ljp20170323
    /// </summary>
    /// <param name="url"></param>
    /// <param name="finishFun"></param>
    /// <returns></returns>
    public IEnumerator DownLoad(string url, HandleFinishDownload finishFun)
    {
      
        WWW www = new WWW(url);
        if (MaxBundleNum > 0)
        {
            mPerPropress = (float)1 / MaxBundleNum;
        }
        int displayProgress = 0;
        int toProgress = 0;
        while (!www.isDone)
        {
          //  LogHelper.Log("01  "+displayProgress+"   " + toProgress + "    "+mPerPropress );

            toProgress = (int)(www.progress * mPerPropress * 100);
            while (displayProgress < toProgress)
            {
                ++displayProgress;
                SetProgress(displayProgress);
                yield return null;
            }
            yield return null;
        }

        toProgress = (int)(mPerPropress * 100);
        while (displayProgress < toProgress)
        {
          //  LogHelper.Log("02");
            ++displayProgress;
            SetProgress(displayProgress);
            yield return null;
        }

        yield return www;


        if (finishFun != null)
        {
            finishFun(www);
        }
        www.Dispose();
    }

    public delegate void HandleFinishDownload(WWW www);


    /// <summary>
    /// 设置进度条
    /// </summary>
    /// <param name="progress"></param>
    public void SetProgress(int progress)
    {
        if (mSlider != null)
        {
            int xx = (int)(((1.0f) * MaxBundleNum - NeedDownFiles.Count) / MaxBundleNum * 100);
            float progressValue = (xx + progress) * 0.01f;
            if(progressValue > 1)
            {
                progressValue = 1.0f;
            }
            if(progressValue > mSlider.value)
            {
                mSlider.value = progressValue;
                mSliderText.text = (xx + progress) + "%";
            }
        }
    } 
    /*
     * 
     * 现在上面加的都是和进度条有关的,这个以前测试过,是可以用的.ljp20170323
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     */
}