public async Task <ChatroomApplication> NewChatroomAsync(IEnumerable <long> peopleIds, string name = "")
{
peopleIds = peopleIds.ToArray();
if (OperatorId != 0)
{
var user = await _userRepo.GetByIdAsync(OperatorId);
if (!peopleIds.Contains(user.Id))
{
throw new ArgumentException("All users must contain yourself.");
}
if (!peopleIds.All(id => id == user.Id || user.IsFriend(id)))
{
throw new ArgumentException("All users must be your friend.");
}
}
var chatroom = await _chatroomRepo.NewEmptyChatroomAsync(name, OperatorId);
foreach (var userId in peopleIds)
{
chatroom.AddPeople(userId, 0);
}
if (OperatorId != 0)
{
chatroom.SetRole(OperatorId, UserChatroom.UserRole.Admin, 0);
}
await _chatroomRepo.SaveChangesAsync();
return(new ChatroomApplication(_provider)
{
ChatroomId = chatroom.Id,
OperatorId = OperatorId
});
}
internal async Task <Chatroom> GetOrAddP2PChatroom(long user1Id, long user2Id)
{
var room = await _chatroomRepo.FindP2PChatroomAsync(user1Id, user2Id);
if (room != null)
{
return(room);
}
var user1Exist = await _userRepo.ContainsIdAsync(user1Id);
var user2Exist = await _userRepo.ContainsIdAsync(user2Id);
if (!user1Exist || !user2Exist)
{
throw new ArgumentException("User not exist.");
}
room = await _chatroomRepo.NewEmptyChatroomAsync("", creatorId : 0);
room.AddPeople(user1Id, operatorId: 0);
room.AddPeople(user2Id, operatorId: 0);
room.P2PUser1Id = Math.Min(user1Id, user2Id);
room.P2PUser2Id = Math.Max(user1Id, user2Id);
await _chatroomRepo.SaveChangesAsync();
return(room);
}