/// <summary>
/// 更新会话
/// 单聊
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
private bool Single_updateSession(IM_MsgSingle msg)
{
var user = LOGIN_USER;
var db_result = 0;
using (var db = new ModelAC())
{
var session = db.IM_Chatter.SingleOrDefault(p => p.App_Id == APP_GUID && p.ChatType == IM_ChatType.Single &&
((p.Single_A_UserId == msg.From_UserId && p.Single_B_UserId == msg.To_UserId) ||
(p.Single_A_UserId == msg.To_UserId && p.Single_B_UserId == msg.From_UserId))
);
if (session == null)
{
#region 新增会话
var newSession = new IM_Chatter()
{
App_Id = APP_GUID,
ChatType = IM_ChatType.Single,
Single_A_UserId = msg.From_UserId,
Single_B_UserId = msg.To_UserId,
Group_GroupId = null,
};
newSession.IM_ChatterActors.Add(new IM_ChatterActor()
{//消息发送者
App_Id = APP_GUID,
ChatterId = newSession.Id,
UserId = msg.From_UserId,
Last_MsgId = msg.Id,
UnreadMsgCount = 0,
ChatterTime = DateTime.Now,
IsCleared = false,
});
newSession.IM_ChatterActors.Add(new IM_ChatterActor()
{//消息接收者
App_Id = APP_GUID,
ChatterId = newSession.Id,
UserId = msg.To_UserId,
Last_MsgId = msg.Id,
UnreadMsgCount = 1,
ChatterTime = DateTime.Now,
IsCleared = false,
});
db.IM_Chatter.Add(newSession);
db_result = db.SaveChanges();
#endregion
}
else
{
#region 更新会话
foreach (var toActor in session.IM_ChatterActors)
{
toActor.Last_MsgId = msg.Id;
if (toActor.UserId != user.Id)
{//消息接收者
toActor.UnreadMsgCount += 1;
}
toActor.ChatterTime = DateTime.Now;
}
db_result = db.SaveChanges();
#endregion
}
}
return(db_result > 0);
}
/// <summary>
/// 更新会话
/// 群聊
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
private bool Group_updateSession(IM_MsgGroup msg)
{
var user = LOGIN_USER;
//所有群聊成员
var allMembers = new List <Guid>();
var db_result = 0;
using (var db = new ModelAC())
{
allMembers = db.Im_UserGroup.Where(p => p.IM_Group_Id == msg.To_GroupId).Select(p => p.IM_User_Id).ToList();
var session = db.IM_Chatter.SingleOrDefault(p =>
p.App_Id == APP_GUID && p.ChatType == IM_ChatType.Group && p.Group_GroupId == msg.To_GroupId);
if (session == null)
{
#region 新增会话
var newSession = new IM_Chatter()
{
App_Id = APP_GUID,
ChatType = IM_ChatType.Group,
Single_A_UserId = null,
Single_B_UserId = null,
Group_GroupId = msg.To_GroupId,
};
newSession.IM_ChatterActors.Add(new IM_ChatterActor()
{//消息发送者
App_Id = APP_GUID,
ChatterId = newSession.Id,
UserId = msg.From_UserId,
Last_MsgId = msg.Id,
UnreadMsgCount = 0,
ChatterTime = DateTime.Now,
IsCleared = false,
});
allMembers.Remove(msg.From_UserId);
foreach (var memeberId in allMembers)
{//消息接收者
newSession.IM_ChatterActors.Add(new IM_ChatterActor()
{
App_Id = APP_GUID,
ChatterId = newSession.Id,
UserId = memeberId,
Last_MsgId = msg.Id,
UnreadMsgCount = 1,
ChatterTime = DateTime.Now,
IsCleared = false,
});
}
db.IM_Chatter.Add(newSession);
db_result = db.SaveChanges();
#endregion
}
else
{
#region 更新会话
List <Guid> oldIM_ChatterActors = session.IM_ChatterActors.Select(p => p.UserId).ToList();
List <Guid> expectedList = allMembers.Except(oldIM_ChatterActors).ToList();
foreach (var toActor in session.IM_ChatterActors)
{//更新会话参与者
toActor.Last_MsgId = msg.Id;
if (toActor.UserId != user.Id)
{//消息接收者
toActor.UnreadMsgCount += 1;
}
toActor.ChatterTime = DateTime.Now;
}
if (expectedList.Exists(p => p == msg.From_UserId))
{//新增会话参与者-消息发送者
expectedList.Remove(msg.From_UserId);
session.IM_ChatterActors.Add(new IM_ChatterActor()
{
App_Id = APP_GUID,
ChatterId = session.Id,
UserId = msg.From_UserId,
Last_MsgId = msg.Id,
UnreadMsgCount = 0,
ChatterTime = DateTime.Now,
IsCleared = false,
});
}
foreach (var memeberId in expectedList)
{//新增会话参与者-消息接收者
session.IM_ChatterActors.Add(new IM_ChatterActor()
{
App_Id = APP_GUID,
ChatterId = session.Id,
UserId = memeberId,
Last_MsgId = msg.Id,
UnreadMsgCount = 1,
ChatterTime = DateTime.Now,
IsCleared = false,
});
}
db_result = db.SaveChanges();
#endregion
}
}
return(db_result > 0);
}
