{

/// <summary>

/// ChatWindow.xaml 的交互逻辑

/// </summary>

///

public delegate void cwEventHandler();

public partial class ChatWindow : Window

{

public event cwEventHandler CloseEvent;

private string friendID = "";

private string friendAlias = "";

private string friendIP = "";

private string MyID = "";

private string DisplayfriendID = "";

private P2PCore P2PCore_instance = null;

private CSCore CSCore_instance = null;

private InterThreads inter = null;

private ObservableCollection<ChattingMessage> ChattingMessageList = null;

private const int FileMaxSize = 15 * 1024 * 1024;

private byte[] FileBuffer = null;

private const int SendDataPort = 15120;

public List<string> GroupIDList = null;

private byte[] P2PFileBuffer = null;

private int[] P2PFileIndexPool = null;

private List<string> P2PFileIDList = null;

private int ActualFileLength = 0;

private byte[] P2pMyOriginalPart = null;

private int MyP2PIndex = 0;

private int GroupInit = 0;

private string P2PFileName = null;

public ChatWindow()

{

InitializeComponent();

CSCore_instance = CSCore.GetInstance();

P2PCore_instance = P2PCore.GetInstance();

//P2PCore_instance.BeginListen();

FileBuffer = new byte[FileMaxSize];

inter = InterThreads.GetInstance();

ChattingMessageList = new ObservableCollection<ChattingMessage>();

}

public void SetMyID(string ID)

{

MyID = ID;

}

public void SetFriendInfo(string info)

{

var temp = info.Split('_');

friendID = temp[0];

friendAlias = temp[1];

FriendName.Content = friendAlias;

DisplayfriendID = friendID;

FriendID.Content = DisplayfriendID;

if(friendID[0]==' ')

{

//is group!

GroupIDList = new List<string>();

var arr = friendID.Split(' ');

//save group info

foreach(var id in arr)

{

if (id != "")

{

GroupIDList.Add(id);

}

}

if(!GroupIDList.Contains(MyID))

GroupIDList.Add(MyID);

//update friendID

friendID = " ";

foreach(var id in GroupIDList)

{

friendID += id + " ";

}

//greetings message

string msg = "__init__";

if (GroupInit == 0)

{

SendGroupMessage(msg);

}

GroupInit = 1;

//change window look

icHead.Kind = MaterialDesignThemes.Wpf.PackIconKind.AccountMultiple;

lbAlias.Content = "群组昵称";

lbAlias.VerticalContentAlignment = VerticalAlignment.Center;

lbAlias.FontSize = 14;

FriendName.FontSize = 12;

lbID.Content = "群组内学号";

FriendID.FontSize = 12;

lbID.FontSize = 14;

lbID.VerticalContentAlignment = VerticalAlignment.Center;

Sendbtn.Height = 150;

SendUDPbtn.IsEnabled = false;

SendUDPbtn.Width = 0;

SendUDPbtn.Opacity = 0;

}

}

private void SendGroupMessage(string text)

{

var msg = new ChattingMessage();

foreach (var id in GroupIDList)

{

if(id == MyID)

{

continue;

}

//check online

var temp = "q" + id;

var resp = CSCore_instance.Query(temp);

if (resp == "n")

{

//MessageBox.Show("当前好友不在线!");

//this.Close();

continue;

}

else

{

friendIP = resp;

}

msg.CMType = MessageType.Text;

msg.Content = text;

msg.DstID = id;

msg.SrcID = MyID;

msg.SendTime = DateTime.Now.ToString();

//P2P发送

MyDataGram mdg = new MyDataGram();

mdg.SrcID = MyID;

mdg.Text = text;

mdg.DstID = id;

mdg.GroupID = friendID;

mdg.Type = MessageType.Text;

P2PCore_instance.SendData(MyDataGram.EncodeMessage(mdg), friendIP, SendDataPort);

}

if (msg.Content == "__init__")

{

return;

}

//回显

msg.Content = "我: " + msg.Content;

msg.hori = HorizontalAlignment.Right;

ChattingMessageList.Add(msg);

ChattingWindowListBox.ScrollIntoView(msg);

//遍历所有的group_id 给所有其他人发一个奇怪的message

}

private string ConvertIDs()

{

string rst = " ";

foreach(var id in GroupIDList)

{

rst += id + " ";

}

return rst;

}

public string GetWindowInfo()

{

return friendID;

}

public string GetFriendIP()

{

return friendIP;

}

private async void SendFile_MouseLeftButtonUpAsync(object sender, MouseButtonEventArgs e)

{

//MessageBox.Show("Send File called!");

//open dialog

OpenFileDialog filedlg = new OpenFileDialog

{

Title = "请选择要发送的文件",

CheckFileExists = true,

CheckPathExists = true,

Multiselect = false

};

if (filedlg.ShowDialog() == true)

{

Array.Clear(FileBuffer, 0, FileMaxSize);

string filename = filedlg.FileName;

FileInfo info = new FileInfo(filename);

if(info.Length > FileMaxSize)

{

MessageBox.Show("文件过大,支持最大文件: 16MB");

return;

}

//MessageBox.Show(filename);

if(friendID[0]==' ')

{

//P2P文件传输

List<string> OnLineIDList = new List<string>();

List<string> OnLineIPList = new List<string>();

string GroupFileID = " ";

foreach(var id in GroupIDList)

{

if (id != MyID)

{

var temp = "q" + id;

var resp = CSCore_instance.Query(temp);

if (resp != "n")

{

//danger!

OnLineIDList.Add(id);

OnLineIPList.Add(resp);

GroupFileID += id + " ";

}

}

}

int TotalOnlineNum = OnLineIDList.Count();

if (TotalOnlineNum == 0)

{

MessageBox.Show("无人在线, 别发了吧...");

return;

}

//load file

string ShortName = Path.GetFileName(filename);

FileStream fs = File.OpenRead(filename);

int FileLength = await fs.ReadAsync(FileBuffer, 0, FileBuffer.Length);

var FullFile = new byte[FileLength];

Buffer.BlockCopy(FileBuffer, 0, FullFile, 0, FileLength);

//cut file

int flag = 0;

int filecutter =(int) Math.Floor((double)(FileLength/TotalOnlineNum));

for (int i = 0;i<TotalOnlineNum; i++)

{

var mdg = new MyDataGram();

mdg.SrcID = MyID;

mdg.DstID = OnLineIDList[i];

mdg.Text = ShortName;

mdg.Type = MessageType.File;

mdg.GroupFileIndex = i + 1;

mdg.GroupFileID = GroupFileID;

mdg.GroupID = friendID;

if(i == TotalOnlineNum - 1)

{

mdg.FileContent = new byte[FileLength - i * filecutter];

Buffer.BlockCopy(FullFile, i * filecutter, mdg.FileContent, 0, FileLength - i * filecutter);

}

else

{

mdg.FileContent = new byte[filecutter];

Buffer.BlockCopy(FullFile, i * filecutter, mdg.FileContent, 0, filecutter);

}

try

{

P2PCore_instance.SendData(MyDataGram.EncodeMessage(mdg), OnLineIPList[i], SendDataPort);

}

catch (Exception ex)

{

MessageBox.Show("发送失败!接收方: "+OnLineIDList[i]);

return;

}

ChattingMessage cmsg = new ChattingMessage();

cmsg.SrcID = MyID;

cmsg.DstID = friendID;

cmsg.CMType = mdg.Type;

cmsg.Content = ShortName;

cmsg.SendTime = DateTime.Now.ToString();

if (cmsg.CMType == MessageType.Image)

{

cmsg.BitMapSource = new BitmapImage(new Uri(filename, UriKind.Absolute));

}

if (flag == 0)

{

cmsg.hori = HorizontalAlignment.Right;

ChattingMessageList.Add(cmsg);

ChattingWindowListBox.ScrollIntoView(cmsg);

}

flag = 1;

}

}

else

{

var temp = "q" + friendID;

var resp = CSCore_instance.Query(temp);

if (resp == "n")

{

MessageBox.Show("当前好友不在线!");

this.Close();

return;

}

else

{

friendIP = resp;

}

string ShortName = Path.GetFileName(filename);

var mdg = new MyDataGram();

FileStream fs = File.OpenRead(filename);

int FileLength = await fs.ReadAsync(FileBuffer, 0, FileBuffer.Length);

mdg.SrcID = MyID;

mdg.DstID = friendID;

mdg.Text = ShortName;

mdg.Type = MessageType.File;

if (IsImage(filename))

{

mdg.Type = MessageType.Image;

}

mdg.FileContent = new byte[FileLength];

Buffer.BlockCopy(FileBuffer, 0, mdg.FileContent, 0, FileLength);

try

{

P2PCore_instance.SendData(MyDataGram.EncodeMessage(mdg), friendIP, SendDataPort);

}

catch (Exception ex)

{

MessageBox.Show("发送失败!");

return;

}

ChattingMessage cmsg = new ChattingMessage();

cmsg.SrcID = MyID;

cmsg.DstID = friendID;

cmsg.CMType = mdg.Type;

cmsg.Content = ShortName;

cmsg.SendTime = DateTime.Now.ToString();

if(cmsg.CMType == MessageType.Image)

{

cmsg.BitMapSource = new BitmapImage(new Uri(filename, UriKind.Absolute));

}

cmsg.hori = HorizontalAlignment.Right;

ChattingMessageList.Add(cmsg);

ChattingWindowListBox.ScrollIntoView(cmsg);

}

}

MessageBox.Show("文件成功发送!");

return;

}

private void Sendbtn_Click(object sender, RoutedEventArgs e)

{

if (GroupIDList == null)

{

SendMessage();

}

else

{

var text = EditMessage.Text;

EditMessage.Text = "";

if (text == "")

{

MessageBox.Show("发送消息不能为空!");

return;

}

SendGroupMessage(text);

}

//if group send group

}

public void SendMessage()

{

//MessageBox.Show("Send Called!");

var text = EditMessage.Text;

EditMessage.Text = "";

if (text == "")

{

MessageBox.Show("发送消息不能为空!");

return;

}

//check online

var temp = "q" + friendID;

var resp = CSCore_instance.Query(temp);

if (resp == "n")

{

MessageBox.Show("当前好友不在线!");

this.Close();

return;

}

else

{

friendIP = resp;

}

var msg = new ChattingMessage();

msg.CMType = MessageType.Text;

msg.Content = text;

msg.DstID = friendID;

msg.SrcID = MyID;

msg.SendTime = DateTime.Now.ToString();

//P2P发送

MyDataGram mdg = new MyDataGram();

mdg.SrcID = MyID;

mdg.Text = text;

mdg.DstID = friendID;

mdg.Type = MessageType.Text;

P2PCore_instance.SendData(MyDataGram.EncodeMessage(mdg), friendIP, SendDataPort);

//回显

msg.Content = "我: " + msg.Content;

msg.hori = HorizontalAlignment.Right;

ChattingMessageList.Add(msg);

ChattingWindowListBox.ScrollIntoView(msg);

}

public void ReceiveMessage(MyDataGram mdg)

{

var msg = new ChattingMessage();

msg.SrcID = mdg.SrcID;

msg.DstID = mdg.DstID;

msg.CMType = (MessageType)(uint)mdg.Type;

//文件处理

if(msg.CMType== MessageType.File|| msg.CMType == MessageType.Image)

{

//if (mdg.GroupID[0]==' ')

if(mdg.GroupID!="")

{

if (MatchP2PFile(mdg))

{

//same file

}

else

{

P2PFileBuffer = null;

P2PFileIDList = null;

P2PFileIndexPool = null;

ActualFileLength = 0;

P2pMyOriginalPart = null;

}

if (mdg.GroupFileIndex == MyP2PIndex)

{

//ask!

if (P2PFileIndexPool == null)

{

MessageBox.Show("Fatal!");

return;

}

//向请求方给予你的部分

MyDataGram Askdg = new MyDataGram();

Askdg.DstID = mdg.SrcID;

Askdg.SrcID = mdg.DstID;

Askdg.GroupFileID = mdg.GroupFileID;

Askdg.GroupID = mdg.GroupID;

Askdg.Text = mdg.Text;

Askdg.GroupFileIndex = MyP2PIndex;

Askdg.Type = MessageType.File;

Askdg.FileContent = P2pMyOriginalPart;

P2PCore_instance.SendData(MyDataGram.EncodeMessage(Askdg), friendIP, SendDataPort);

}

else

{

//receive!

var arr = mdg.GroupFileID.Split(' ');

if (P2PFileIDList == null)

{

P2PFileIDList = new List<string>();

MyP2PIndex = mdg.GroupFileIndex;

}

foreach (var id in arr)

{

if (id != ""&&id!=mdg.SrcID)

{

P2PFileIDList.Add(id);

}

}

int Totalnum = P2PFileIDList.Count;

//MessageBox.Show("Get P2P file part: " + mdg.GroupFileIndex + "in Total " + P2PFileIDList.Count().ToString() + "Parts");

if (P2PFileIndexPool == null)

{

P2PFileIndexPool = new int[Totalnum];

}

int filecutter = mdg.FileContent.Length;

if (P2PFileBuffer == null)

{

//larger than actual.

P2PFileBuffer = new byte[filecutter * (Totalnum + 1)];

ActualFileLength = 0;

P2pMyOriginalPart = new byte[filecutter];

Buffer.BlockCopy(mdg.FileContent, 0, P2pMyOriginalPart, 0, filecutter);

}

//put in

P2PFileIndexPool[mdg.GroupFileIndex - 1] = 1;

Buffer.BlockCopy(mdg.FileContent, 0, P2PFileBuffer, (mdg.GroupFileIndex - 1) * filecutter, filecutter);

ActualFileLength += filecutter;

int flag = 0;

foreach (int i in P2PFileIndexPool)

{

if (i != 1)

{

flag = 1;

}

}

byte[] FinalFile = null;

if (flag == 0)

{

//finish

FinalFile = new byte[ActualFileLength];

Buffer.BlockCopy(P2PFileBuffer, 0, FinalFile, 0, ActualFileLength);

}

if (FinalFile != null)

{

var question = "收到P2P的完整文件: " + mdg.GroupID + ",确定接受嘛?";

MessageBoxResult rst = MessageBox.Show(question, "Get File!", MessageBoxButton.YesNo);

if (rst == MessageBoxResult.Yes)

{

//MessageBox.Show(msg.Content);

var folder_dir = "./" + msg.SrcID + "/";

if (!Directory.Exists(folder_dir))

{

Directory.CreateDirectory(folder_dir);

}

var FileFullName = folder_dir + mdg.Text;

FileStream fs = File.OpenWrite(FileFullName);

fs.Write(FinalFile, 0, ActualFileLength);

fs.Close();

MessageBox.Show("接收文件成功,储存在: " + FileFullName);

}

else

{

return;

}

}

else

{

//not enough file: Ask file from others

for (int i = 0; i < P2PFileIndexPool.Length; i++)

{

if (P2PFileIndexPool[i] == 0)

{

//没有此部分文件

MyDataGram Askdg = new MyDataGram();

Askdg.DstID = P2PFileIDList[i];

Askdg.SrcID = MyID;

Askdg.GroupFileID = mdg.GroupFileID;

Askdg.GroupID = mdg.GroupID;

Askdg.Text = mdg.Text;

Askdg.GroupFileIndex = i+1;

Askdg.Type = MessageType.File;

Askdg.FileContent = P2pMyOriginalPart;

P2PCore_instance.SendData(MyDataGram.EncodeMessage(Askdg), friendIP, SendDataPort);

}

}

}

}

}

else

{

var question = "你收到来自: " + msg.SrcID + "的文件,确定接受嘛?";

MessageBoxResult rst = MessageBox.Show(question, "Get File!", MessageBoxButton.YesNo);

if (rst == MessageBoxResult.Yes)

{

//MessageBox.Show(msg.Content);

var folder_dir = "./" + msg.SrcID + "/";

if (!Directory.Exists(folder_dir))

{

Directory.CreateDirectory(folder_dir);

}

var FileFullName = folder_dir + mdg.Text;

FileStream fs = File.OpenWrite(FileFullName);

fs.Write(mdg.FileContent, 0, mdg.FileContent.Length);

fs.Close();

MessageBox.Show("接收文件成功,储存在: " + FileFullName);

if(mdg.Type == MessageType.Image)

{

mdg.Text = FileFullName;

}

}

else

{

return;

}

}

}

//询问

if (mdg.GroupID != null)

{

msg.Content = msg.SrcID + ": " + mdg.Text;

}

else

{

msg.Content = friendAlias + ": " + mdg.Text;

}

if(mdg.Type == MessageType.Image)

{

msg.Content = mdg.Text;

string fullpath = Path.GetFullPath(msg.Content);

msg.BitMapSource = new BitmapImage(new Uri(fullpath, UriKind.Absolute));

}

msg.SendTime = DateTime.Now.ToString();

ChattingMessageList.Add(msg);

ChattingWindowListBox.ScrollIntoView(msg);

}

private void Exit_Click(object sender, RoutedEventArgs e)

{

this.Close();

}

private void Window_Loaded(object sender, RoutedEventArgs e)

{

History hist = new History();

ChattingWindowListBox.ItemsSource = ChattingMessageList;

ChattingMessageList = hist.LoadHistory(MyID, friendID, ChattingMessageList);

if(ChattingMessageList.Count!=0)

ChattingWindowListBox.ScrollIntoView(ChattingMessageList.Last());

}

private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)

{

var hist = new History();

hist.SaveHistory(MyID, friendID, ChattingMessageList);

//P2PCore_instance.EndListen();

CloseEvent();

}

private void Window_MouseMove(object sender, MouseEventArgs e)

{

if (e.LeftButton == MouseButtonState.Pressed)

{

this.DragMove();

}

}

private void SendUDPbtn_Click(object sender, RoutedEventArgs e)

{

SendUDP();

}

private void SendUDP()

{

if(friendID[0]==' ')

{

MessageBox.Show("暂不支持UDP群组通话");

return;

}

var text = EditMessage.Text;

EditMessage.Text = "";

if (text == "")

{

MessageBox.Show("发送消息不能为空!");

return;

}

var temp = "q" + friendID;

var resp = CSCore_instance.Query(temp);

if (resp == "n")

{

MessageBox.Show("当前好友不在线!");

this.Close();

return;

}

else

{

friendIP = resp;

}

var msg = new ChattingMessage();

msg.CMType = MessageType.Text;

msg.Content = text;

msg.DstID = friendID;

msg.SrcID = MyID;

msg.SendTime = DateTime.Now.ToString();

//P2P发送

MyDataGram mdg = new MyDataGram();

mdg.SrcID = MyID;

mdg.Text = text;

mdg.DstID = friendID;

mdg.Type = MessageType.Text;

P2PCore_instance.SendUDPData(MyDataGram.EncodeMessage(mdg), friendIP, SendDataPort);

P2PCore_instance.AddUdpMessage(MyDataGram.EncodeMessage(mdg), friendIP, SendDataPort);

//回显

msg.Content = "我: " + msg.Content;

msg.hori = HorizontalAlignment.Right;

ChattingMessageList.Add(msg);

ChattingWindowListBox.ScrollIntoView(msg);

}

private bool MatchP2PFile(MyDataGram mdg)

{

if (P2PFileBuffer == null && P2PFileIDList == null &&

P2PFileIndexPool == null && ActualFileLength == 0 &&

P2pMyOriginalPart == null)

{

return false;

}

else

{

var arr = mdg.GroupFileID.Split(' ');

List<string> tempList = new List<string>();

int flag = 0;

foreach (var id in arr)

{

if (id != "")

{

if (!P2PFileIDList.Contains(id))

{

flag = 1;

}

}

}

if (flag == 1)

{

return false;

}

return true;

}

}

private bool IsImage(string path)

{

try

{

System.Drawing.Image img = System.Drawing.Image.FromFile(path);

return true;

}

catch (Exception e)

{

return false;

}

}

}

public class MsgVisConverter : IValueConverter

{

public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

{

Visibility result = Visibility.Collapsed;

if((Type)parameter == typeof(TextBlock))

{

if ((MessageType)value == MessageType.Text)

result = Visibility.Visible;

}

if((Type)parameter == typeof(Label))

{

if ((MessageType)value == MessageType.File)

{

result = Visibility.Visible;

}

}

if ((Type)parameter == typeof(Image))

{

if ((MessageType)value == MessageType.Image)

{

result = Visibility.Visible;

}

}

return result;

}

public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

{

return null;

}

}