public async Task <ChatVm> AddUsersToChatAsync(IEnumerable <long> usersId, long chatId, long userId)
{
using (MessengerDbContext context = contextFactory.Create())
{
using (var transaction = await context.Database.BeginTransactionAsync().ConfigureAwait(false))
{
Chat chat = await context.Chats.FirstOrDefaultAsync(opt => opt.Id == chatId).ConfigureAwait(false);
if (chat == null)
{
throw new ConversationNotFoundException(chatId);
}
User requestingUser = await context.Users.FindAsync(userId).ConfigureAwait(false);
if (requestingUser == null || requestingUser.Deleted)
{
throw new AddUserChatException();
}
ChatUser chatUser = await context.ChatUsers
.FirstOrDefaultAsync(opt => opt.ChatId == chatId && opt.UserId == userId).ConfigureAwait(false);
List <ChatUserVm> addedUsers = new List <ChatUserVm>();
if (chat.Deleted)
{
throw new ConversationIsNotValidException();
}
if (chatUser != null && chatUser.Banned)
{
throw new ChatUserBlockedException();
}
if (usersId.Count() == 1 && usersId.FirstOrDefault() == userId)
{
if (chat.Type == (int)ChatType.Private)
{
throw new AddUserChatException();
}
if (chatUser == null)
{
chatUser = ChatUserConverter.GetNewChatUser(chatId, userId, null);
await context.AddAsync(chatUser).ConfigureAwait(false);
}
else if (chatUser.Deleted)
{
chatUser.Deleted = false;
chatUser.User = requestingUser;
context.Update(chatUser);
}
if (!chat.NodesId.Contains(NodeSettings.Configs.Node.Id))
{
createMessagesService.DownloadMessageHistoryAsync(chat.NodesId.FirstOrDefault(), chat.Id, ConversationType.Chat, null, false);
}
chat.NodesId = chat.NodesId.Append(requestingUser.NodeId.Value).Distinct().ToArray();
addedUsers.Add(ChatUserConverter.GetChatUserVm(chatUser));
}
else
{
if ((chatUser?.Deleted).GetValueOrDefault(true))
{
throw new AddUserChatException();
}
if (await loadUsersService.IsUserBlacklisted(userId, usersId).ConfigureAwait(false))
{
throw new UserBlockedException();
}
ExpressionStarter <User> usersCondition = PredicateBuilder.New <User>();
usersCondition = usersId.Aggregate(usersCondition,
(current, value) => current.Or(opt => opt.Id == value).Expand());
List <User> existingUsers = await context.Users
.AsNoTracking()
.Where(usersCondition)
.ToListAsync()
.ConfigureAwait(false);
ExpressionStarter <ChatUser> chatUsersCondition = PredicateBuilder.New <ChatUser>();
chatUsersCondition = existingUsers.Select(opt => opt.Id).Aggregate(chatUsersCondition,
(current, value) => current.Or(opt => opt.UserId == value && opt.ChatId == chatId).Expand());
List <ChatUser> validChatUsers = await context.ChatUsers
.Where(chatUsersCondition)
.Include(opt => opt.User)
.ToListAsync()
.ConfigureAwait(false);
foreach (ChatUser user in validChatUsers)
{
if (!user.Banned && user.Deleted)
{
user.Deleted = false;
addedUsers.Add(ChatUserConverter.GetChatUserVm(user));
}
}
context.UpdateRange(validChatUsers);
List <long> newChatUsersId = existingUsers.Select(opt => opt.Id).Except(validChatUsers.Select(opt => opt.UserId)).ToList();
List <ChatUser> newChatUsers = newChatUsersId.Select(id => ChatUserConverter.GetNewChatUser(chatId, id, userId)).ToList();
chat.NodesId = chat.NodesId?.Concat(existingUsers.Select(opt => opt.NodeId.GetValueOrDefault())).Distinct().ToArray()
?? existingUsers.Select(opt => opt.NodeId.GetValueOrDefault()).Distinct().ToArray();
await context.ChatUsers
.AddRangeAsync(newChatUsers)
.ConfigureAwait(false);
/* foreach (ChatUser user in newChatUsers)
* {
* user.User = existingUsers.FirstOrDefault(opt => opt.Id == user.UserId);
* }*/
addedUsers.AddRange(ChatUserConverter.GetChatUsersVm(newChatUsers));
}
context.Update(chat);
transaction.Commit();
await context.SaveChangesAsync()
.ConfigureAwait(false);
ChatVm resultChat = ChatConverter.GetChatVm(chat);
resultChat.Users = addedUsers;
return(resultChat);
}
}
}
public async Task <List <ChatUserVm> > EditChatUsersAsync(IEnumerable <ChatUserVm> users, long chatId, long userId)
{
using (MessengerDbContext context = contextFactory.Create())
{
ExpressionStarter <ChatUser> usersCondition = PredicateBuilder.New <ChatUser>();
usersCondition = users.Select(chatUser => chatUser.UserId).Aggregate(usersCondition,
(current, value) => current.Or(chatUser => chatUser.UserId == value).Expand());
Chat currentChat = await context.Chats.FindAsync(chatId).ConfigureAwait(false);
if (currentChat == null || currentChat.Deleted)
{
throw new ConversationNotFoundException();
}
List <ChatUser> chatUsers = await context.ChatUsers
.Where(usersCondition)
.Where(chatUser => chatUser.ChatId == chatId)
.ToListAsync()
.ConfigureAwait(false);
List <ChatUserVm> editedChatUsers = new List <ChatUserVm>();
ChatUser requestUser = await context.ChatUsers
.FirstOrDefaultAsync(opt => opt.UserId == userId && opt.ChatId == chatId).ConfigureAwait(false);
if (requestUser != null && requestUser.Banned)
{
throw new ChatUserBlockedException();
}
if (requestUser == null || !chatUsers.Any())
{
throw new UserIsNotInConversationException();
}
foreach (ChatUser user in chatUsers)
{
ChatUserVm changedChatUser = users.FirstOrDefault(chatUser => user.UserId == chatUser.UserId);
if (changedChatUser != null)
{
if (requestUser.UserRole > changedChatUser.UserRole &&
requestUser.UserRole > user.UserRole &&
changedChatUser.UserRole < UserRole.Creator)
{
user.UserRole = changedChatUser.UserRole ?? user.UserRole;
user.Deleted = changedChatUser.Deleted ?? user.Deleted;
user.Banned = changedChatUser.Banned ?? user.Banned;
editedChatUsers.Add(ChatUserConverter.GetChatUserVm(user));
}
else if (requestUser.UserId == changedChatUser.UserId)
{
user.Deleted = changedChatUser.Deleted ?? user.Deleted;
editedChatUsers.Add(ChatUserConverter.GetChatUserVm(user));
}
else
{
throw new EditConversationUsersException();
}
}
}
if (users.Any(opt => opt.Deleted.GetValueOrDefault() || opt.Banned.GetValueOrDefault()))
{
var query = from chat in context.Chats
join chatUser in context.ChatUsers on chat.Id equals chatUser.ChatId
join user in context.Users on chatUser.UserId equals user.Id
where chat.Id == chatId && !chatUser.Banned && !chatUser.Deleted
select user.NodeId;
var chatNodesId = (await query.ToListAsync().ConfigureAwait(false)).Distinct();
currentChat.NodesId = chatNodesId.Select(id => id.GetValueOrDefault()).ToArray();
}
await context.SaveChangesAsync().ConfigureAwait(false);
return(editedChatUsers);
}
}
