private async Task ValidateAddingUserToGroupChatAsync(AddUserToGroupChatDto addUserToGroupDto, CancellationToken ct)
{
User user = await _unitOfWork.UserRepository.GetAsync(addUserToGroupDto.UserId, ct);
if (user == null)
{
_logger.LogWarning("User {UserId} not found", addUserToGroupDto.UserId);
throw new UserNotFoundException();
}
GroupChat chat = await _unitOfWork.GroupChatRepository.GetAsync(addUserToGroupDto.ChatId, ct);
if (chat == null)
{
_logger.LogWarning("Group chat with id {GroupChatId} not found", addUserToGroupDto.ChatId);
throw new ChatNotFoundException();
}
if (chat.OwnerId != addUserToGroupDto.AddedByUserId)
{
_logger.LogWarning("Only owner can add user to group chat. {UserId} is not the owner", addUserToGroupDto.AddedByUserId);
throw new AddUserActionForbiddenException();
}
UserGroupChat userGroupChat = await _unitOfWork.UserGroupChatRepository.GetUserGroupChatAsync(
addUserToGroupDto.ChatId, addUserToGroupDto.UserId, ct);
if (userGroupChat != null)
{
_logger.LogWarning("User with id {UserId} already exist in chat", addUserToGroupDto.UserId, addUserToGroupDto.ChatId);
throw new UserAlreadyInGroupChatException();
}
}
public async Task AddUserToGroupChatAsync(AddUserToGroupChatDto addUserToGroupDto, CancellationToken ct = default)
{
_logger.LogInformation("Add user to group chat {AddUserToGroup}", addUserToGroupDto);
await ValidateAddingUserToGroupChatAsync(addUserToGroupDto, ct);
UserGroupChat addUserToGroup = _mapper.Map <UserGroupChat>(addUserToGroupDto);
addUserToGroup.CreatedAt = addUserToGroup.UpdatedAt = DateTime.UtcNow;
_unitOfWork.UserGroupChatRepository.Create(addUserToGroup);
await _unitOfWork.CommitAsync(ct);
}
