/// <summary>
/// Reading page of messages of chat by Id
/// </summary>
/// <param name="chatModel"></param>
/// <returns></returns>
public List <MessageResponseModel> ReadPage(ChatPaginationReceiveModel chatModel)
{
using (DatabaseContext context = new DatabaseContext())
{
var messages = context.Messages.Where(m => m.ChatId == chatModel.ChatId);
messages.Reverse();
return(messages
.Skip(chatModel.Page * 30)
.Take(30)
.Select(m => new MessageResponseModel()
{
Id = m.Id,
UserMassage = m.UserMessage,
ChatId = m.ChatId,
UserId = m.FromUserId,
IsReaded = m.IsReaded,
Date = m.Date,
File = string.IsNullOrEmpty(m.FileName) ? null : new FileModel()
{
FileName = m.FileName,
Extension = m.FileExtension,
BinaryForm = m.File
}
})
.ToList());
}
}
public OperationResultInfo GetChatMessages(ChatPaginationReceiveModel model)
{
try
{
var messagesPage = _messageLogic.ReadPage(model);
return(new OperationResultInfo()
{
ErrorInfo = string.Empty,
OperationResult = OperationsResults.Successfully,
ToListener = ListenerType.ChatsMessagesListener,
JsonData = messagesPage
});
}
catch (Exception ex)
{
return(new OperationResultInfo()
{
ErrorInfo = ex.Message,
OperationResult = OperationsResults.Unsuccessfully,
ToListener = ListenerType.ChatsMessagesListener
});
}
}