public static GroupChat AddChat(this ChatDBContext db, String ChatName, String CreatorId)
{
GroupChat gc = new GroupChat();
gc.ChatName = ChatName;
gc.CreateTime = DateTime.Now;
Chats_Participants cp = new Chats_Participants();
cp.AddTime = gc.CreateTime;
cp.UserId = CreatorId;
gc.Participants.Add(cp);
db.Chats.Add(gc);
int temp = db.SaveChanges();
if (temp == 2)
{
return(gc);
}
else
{
return(null);
}
}
public static GroupChat AddParticipant(this ChatDBContext db, int ChatId, string ParticipantId, string InvitatorId)
{
Chats_Participants cp = db.Chats_Participants.Where(x => x.ChatId == ChatId && x.UserId == ParticipantId).SingleOrDefault();
if (cp == null)
{
cp = new Chats_Participants();
cp.InvitatorId = InvitatorId;
cp.UserId = ParticipantId;
cp.ChatId = ChatId;
cp.AddTime = DateTime.Now;
db.Chats_Participants.Add(cp);
int res = db.SaveChanges();
if (res == 1)
{
return(cp.Chat);
}
}
return(null);
}