/// <summary>
/// 处理接收到的信息（包括大数据块信息）。
/// </summary>
/// <param name="sourceUserID">发出信息的用户ID。如果为null，表示信息来自服务端。</param>
/// <param name="informationType">自定义信息类型</param>
/// <param name="info">信息</param>
public void HandleInformation(string sourceUserID, int informationType, byte[] info)
{
SysMsg sysmsg = new SysMsg();
switch (informationType)
{
//文本消息
case Constant.MSGTEXT:
//文本消息格式：接收者ID卍发送者ID卍消息内容卍发送时间卍发送人名字
string message = System.Text.Encoding.UTF8.GetString(info);
//得到含有5个元素的数组
string[] msgs = Regex.Split(message, Constant.SPLIT, RegexOptions.IgnoreCase);
//消息存在msg对象中
Msg msg = new Msg(msgs, 0, 0);
try
{
//按照ID查找listbox中的subItem
ChatListSubItem[] items = chatListBox_contacts.GetSubItemsById(Convert.ToUInt32(msgs[1]));
//聊天窗口的标题
string windowsName = items[0].NicName + ' ' + items[0].ID;
//查找是否已经存在窗口
IntPtr handle = NativeMethods.FindWindow(null, windowsName);
//聊天窗口已存在
if (handle != IntPtr.Zero)
{
msg.IsReaded = 1;
Form frm = (Form)Form.FromHandle(handle);
//激活
frm.Activate();
//传送消息到聊天窗口
this.OnReceive(msg);
}
else
{
//头像闪烁
twinkle(chatListBox_contacts, Convert.ToUInt32(msgs[1]));
}
//消息存入数据库
MsgDB.uniqueInstance.addMsg(msg);
}
catch
{
MsgDB.uniqueInstance.addMsg(msg);
}
break;
//处理图片
case Constant.MSGIMG:
MsgImg msgimg = ImageUtil.bytesToIdImg(info);
//存储图片
ImageUtil.ImgSave(msgimg.Id, msgimg.Img);
break;
case Constant.MSG_ADDFRIEND_APPLY:
string infostr = System.Text.Encoding.UTF8.GetString(info);
//info格式:ID卍昵称卍性别卍生日卍地址卍注册时间
sysmsg.Content = infostr;
sysmsg.Type = Constant.MSG_ADDFRIEND_APPLY;
SystemMsgDB.instance.addSystemMsg(sysmsg.Content, sysmsg.Type);//存入数据库
break;
case Constant.MSG_ADDFRIEND_AGREE:
//info格式:ID卍昵称卍性别卍生日卍地址卍注册时间
string userInfo= System.Text.Encoding.UTF8.GetString(info);
//分割info
string[] userInfos = Regex.Split(userInfo, Constant.SPLIT, RegexOptions.IgnoreCase);
//把消息存进数据库
sysmsg.Content = userInfo;
sysmsg.Type = Constant.MSG_ADDFRIEND_AGREE;
SystemMsgDB.instance.addSystemMsg(sysmsg.Content, sysmsg.Type);
//把好友存进数据库
Friend fr=new Friend();
fr.UserId=userInfos[0];
fr.UserName=userInfos[1];
fr.Sex=Convert.ToInt32(userInfos[2]);
fr.Birthday=userInfos[3];
fr.Address=userInfos[4];
fr.Time=userInfos[5];
FriendDB.uniqueInstance.addFriend(fr);
//刷新好友列表
displayFriend();
break;
}
}
/// <summary>
/// 获得最新的系统消息
/// </summary>
/// <returns></returns>
public SysMsg getASysMsg()
{
string msgId;
string cmdString = "SELECT * FROM sysmsg where isRead = 0 order by msgId desc limit 1;";
conn.Open();
SQLiteCommand sql = new SQLiteCommand(cmdString, conn);
SQLiteDataReader result = sql.ExecuteReader();
if (result.Read())
{
SysMsg sysMsg = new SysMsg();
msgId = result[0].ToString();
sysMsg.Type = int.Parse(result[1].ToString());
sysMsg.Content = result[2].ToString();
result.Close();
sql.CommandText = "UPDATE sysmsg SET isRead = 1 WHERE msgId=" + msgId + ";";
sql.ExecuteNonQuery();
sql.Dispose();
conn.Close();
return sysMsg;
}
else//没有结果
{
result.Close();
sql.Dispose();
conn.Close();
return null;
}
}
