/// <summary>
/// 发送-图片消息
/// </summary>
/// <returns></returns>
public object Group_SendPicture(IGroup_SendText model)
{
var user = LOGIN_USER;
var msg = new IM_MsgGroup();
var db_result = 0;
using (var db = new ModelAC())
{
#region db
msg.App_Id = APP_GUID;
msg.MsgClientId = model.MsgClientId;
msg.From_UserId = user.Id;
msg.To_GroupId =
db.IM_Group.SingleOrDefault(p => p.App_Id == APP_GUID && p.GroupId == model.To_GroupId).Id;
msg.MsgTime = DateTime.Now;
msg.IsFullRead = false;
msg.MsgType = model.MsgType;
msg.MsgBody = model.MsgBody;
db.IM_MsgGroup.Add(msg);
db_result = db.SaveChanges();
#endregion
}
var session_result = Group_updateSession(msg);
if (db_result == 1)
{
var mOGroup_SendText = new OGroup_SendText()
{
#region 输出
Id = msg.Id.ToString(),
MsgClientId = msg.MsgClientId,
From_UserId = model.From_UserId,
//From_UserImg = SITE_URL + user.PortraitUri,
To_GroupId = model.To_GroupId,
MsgTime = msg.MsgTime,
IsFullRead = msg.IsFullRead,
MsgType = msg.MsgType,
MsgBody = msg.MsgBody,
#endregion
};
var jsonResult = CommonJson.camelObject(mOGroup_SendText);
#region 消息分发
Clients.OthersInGroup(msg.To_GroupId.ToString()).Group_SendPicture(jsonResult);
#endregion
return(jsonResult);
}
else
{
return(null);
}
}
/// <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);
}
