public async Task <ChatVm> EditChatAsync(EditChatVm editChat, long userId)
{
using (MessengerDbContext context = contextFactory.Create())
{
IQueryable <Chat> query = from chat in context.Chats
join chatUser in context.ChatUsers on chat.Id equals chatUser.ChatId
join chatUsers in context.ChatUsers on chat.Id equals chatUsers.ChatId
where chat.Id == editChat.Id &&
chatUser.UserId == userId &&
chatUser.UserRole >= UserRole.Admin &&
chat.Deleted == false &&
chatUser.Banned == false &&
chatUser.Deleted == false &&
chatUsers.Banned == false &&
chatUsers.Deleted == false
select chat;
Chat targetChat = await query
.FirstOrDefaultAsync()
.ConfigureAwait(false);
if (targetChat != null)
{
targetChat = ChatConverter.GetChat(targetChat, editChat);
await context.SaveChangesAsync().ConfigureAwait(false);
return(ChatConverter.GetChatVm(targetChat));
}
throw new PermissionDeniedException();
}
}
public async Task <ChatVm> NewOrEditChatAsync(ChatVm targetChat)
{
if (targetChat == null)
{
return(null);
}
try
{
using (MessengerDbContext context = contextFactory.Create())
{
var query = from chat in context.Chats
where chat.Id == targetChat.Id
select chat;
Chat editableChat = await query.Include(opt => opt.ChatUsers).FirstOrDefaultAsync().ConfigureAwait(false);
if (editableChat == null)
{
editableChat = ChatConverter.GetChat(targetChat);
if (targetChat.Users != null)
{
editableChat.ChatUsers = ChatUserConverter.GetChatUsers(targetChat.Users).ToList();
}
await context.AddAsync(editableChat).ConfigureAwait(false);
}
else
{
editableChat = ChatConverter.GetChat(editableChat, new EditChatVm
{
About = targetChat.About,
Name = targetChat.Name,
Photo = targetChat.Photo,
Public = targetChat.Public,
Security = targetChat.Security,
Visible = targetChat.Visible
});
if (!targetChat.Users.IsNullOrEmpty())
{
editableChat.ChatUsers = ChatUserConverter.GetChatUsers(targetChat.Users);
}
context.Update(editableChat);
}
await context.SaveChangesAsync().ConfigureAwait(false);
return(ChatConverter.GetChatVm(editableChat));
}
}
catch (DbUpdateException ex)
{
Logger.WriteLog(ex);
return(targetChat);
}
catch (Exception ex)
{
Logger.WriteLog(ex);
return(null);
}
}
public async Task <ChatVm> GetChatByIdAsync(long chatId)
{
using (MessengerDbContext context = contextFactory.Create())
{
return(ChatConverter.GetChatVm(await context.Chats
.AsNoTracking()
.Include(chat => chat.ChatUsers)
.FirstOrDefaultAsync(chat => chat.Id == chatId)
.ConfigureAwait(false)));
}
}
public async Task <ChatVm> CreateChatAsync(ChatVm chatVm, long userId)
{
using (MessengerDbContext context = contextFactory.Create())
{
List <ChatUser> chatUsers = new List <ChatUser>();
using (var transaction = await context.Database.BeginTransactionAsync().ConfigureAwait(false))
{
if (chatVm.Users != null && await loadUsersService.IsUserBlacklisted(userId, chatVm.Users.Select(opt => opt.UserId)).ConfigureAwait(false))
{
throw new UserBlockedException();
}
Chat newChat = ChatConverter.GetChat(chatVm);
newChat.Tag = RandomExtensions.NextString(10, "QWERTYUIOPASDFGHJKLZXCVBNM1234567890");
newChat.Id = await poolsService.GetChatIdAsync().ConfigureAwait(false);
if (chatVm.Users != null)
{
chatUsers.AddRange(chatVm.Users.Where(opt => opt.UserId != userId).Select(chatUser => new ChatUser
{
Banned = chatUser.Banned.GetValueOrDefault(false),
Deleted = chatUser.Deleted.GetValueOrDefault(false),
Joined = DateTime.UtcNow.ToUnixTime(),
UserId = chatUser.UserId,
UserRole = chatUser.UserRole.GetValueOrDefault(UserRole.User),
InviterId = userId
}));
}
if (!chatUsers.Any(opt => opt.UserId == userId))
{
chatUsers.Add(new ChatUser
{
Banned = false,
Deleted = false,
Joined = DateTime.UtcNow.ToUnixTime(),
UserId = userId,
UserRole = UserRole.Creator
});
}
newChat.ChatUsers = chatUsers;
IEnumerable <UserVm> users = await loadUsersService.GetUsersByIdAsync(chatUsers.Select(chatUser => chatUser.UserId)).ConfigureAwait(false);
IEnumerable <long> nodesId = users.Select(user => user.NodeId ?? 0).Distinct();
newChat.NodesId = nodesId.ToArray();
await context.Chats.AddAsync(newChat).ConfigureAwait(false);
await context.SaveChangesAsync().ConfigureAwait(false);
transaction.Commit();
newChat.ChatUsers = chatUsers;
return(ChatConverter.GetChatVm(newChat));
}
}
}
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);
}
}
}
