//public virtual async Task<string> GetLastMessageFromUser(string sUserName)
//{
// string sResult;
// var client = new TLSharp.Core.TelegramClient(apiId, apiHash);
// await client.ConnectAsync();
// var normalizedUser = (sUserName.StartsWith("@") ?
// sUserName.Substring(1, sUserName.Length - 1) :
// sUserName).ToLower();
// var dialogs = (TLDialogs)await client.GetUserDialogsAsync();
// var user = dialogs.Users
// .Where(x => x.GetType() == typeof(TLUser))
// .OfType<TLUser>()
// .FirstOrDefault(x => x.Username != null && x.Username.ToLower() == normalizedUser);
// TLAbsMessages tlAbsMessages = await client.GetHistoryAsync(new TLInputPeerUser() {
// UserId = user.Id,
// AccessHash = user.AccessHash.Value
// }, 0, -1, 100);
// TLMessages tlMessages = (TLMessages)tlAbsMessages;
// TLMessage lastmessage = (TLMessage)tlMessages.Messages[0];
// sResult = lastmessage.FromId.ToString() + ":" + lastmessage.Message;
// return sResult;
//}
public virtual async Task <TLMessage> GetLastMessageFromUser(string sUserName)
{
TLMessage lastmessage = null;
var client = new TLSharp.Core.TelegramClient(apiId, apiHash);
await client.ConnectAsync();
var normalizedUser = (sUserName.StartsWith("@") ?
sUserName.Substring(1, sUserName.Length - 1) :
sUserName).ToLower();
var dialogs = (TLDialogs)await client.GetUserDialogsAsync();
var user = dialogs.Users
.Where(x => x.GetType() == typeof(TLUser))
.OfType <TLUser>()
.FirstOrDefault(x => x.Username != null && x.Username.ToLower() == normalizedUser);
TLAbsMessages tlAbsMessages = await client.GetHistoryAsync(new TLInputPeerUser()
{
UserId = user.Id,
AccessHash = user.AccessHash.Value
}, 0, -1, 100);
if (tlAbsMessages.GetType() == typeof(TLMessagesSlice))
{
var castMessages = (TLMessagesSlice)tlAbsMessages;
lastmessage = (TLMessage)castMessages.Messages[0];
}
else if (tlAbsMessages.GetType() == typeof(TLMessages))
{
TLMessages tlMessages = (TLMessages)tlAbsMessages;
lastmessage = (TLMessage)tlMessages.Messages[0];
}
return(lastmessage);
}
public async Task <List <TLMessage> > GatherChannelHistory(string channelName, int offset = 0, int maxId = -1, int limit = 50)
{
List <TLMessage> _resultMessages = new List <TLMessage>();
var client = new TLSharp.Core.TelegramClient(apiId, apiHash);
await client.ConnectAsync();
var dialogs = (TLDialogs)await client.GetUserDialogsAsync();
var chat = dialogs.Chats.ToList()
.OfType <TLChannel>()
.FirstOrDefault(c => c.Title == channelName);
if (chat.AccessHash != null)
{
TLChannel channel = new TLChannel()
{
Id = chat.Id, AccessHash = chat.AccessHash
};
var request = new TLRequestGetFullChannel();
var fullChat = await client.SendRequestAsync <TLRequestGetFullChannel>(request);
//var request = new TLRequestGetFullChat() { ChatId = chat.Id };
//var fullChat = await client.SendRequestAsync<TeleSharp.TL.Messages.TLChatFull>(request);
//var request = new TLRequestGetMessages() { Id = chat. };
//var fullChat = await client.SendRequestAsync<TeleSharp.TL.Channels.TLRequestGetMessages>(request);
//var request = new TLRequestGetAllChats() { };
//var fullChat = await client.SendRequestAsync<TeleSharp.TL.Messages.TLRequestGetAllChats>(request);
var tlAbsMessages =
await client.GetHistoryAsync(
new TLInputPeerChannel { ChannelId = chat.Id, AccessHash = chat.AccessHash.Value }, offset,
maxId, limit);
var tlChannelMessages = (TLChannelMessages)tlAbsMessages;
for (var index = 0; index < tlChannelMessages.Messages.Count - 1; index++)
{
var tlAbsMessage = tlChannelMessages.Messages.ToList()[index];
var message = (TLMessage)tlAbsMessage;
//Now you have the message and you can do what you need with it
//the code below is an example of messages classification
if (message.Media == null)
{
_resultMessages.Add(new TLMessage()
{
Id = message.Id,
FromId = chat.Id,
Message = message.Message,
Views = message.Views,
});
}
else
{
switch (message.Media.GetType().ToString())
{
case "TeleSharp.TL.TLMessageMediaPhoto":
var tLMessageMediaPhoto = (TLMessageMediaPhoto)message.Media;
_resultMessages.Add(new TLMessage()
{
Id = message.Id,
FromId = chat.Id,
Message = message.Message,
Views = message.Views,
Media = message.Media,
});
break;
//case "TeleSharp.TL.TLMessageMediaDocument":
// var tLMessageMediaDocument = (TLMessageMediaDocument)message.media;
// _resultMessages.Add(new ChannelMessage()
// {
// Id = message.id,
// ChannelId = chat.id,
// Content = tLMessageMediaDocument.caption,
// Type = EnChannelMessage.MediaDocument,
// Views = message.views ?? 0,
// });
// break;
//case "TeleSharp.TL.TLMessageMediaWebPage":
// var tLMessageMediaWebPage = (TLMessageMediaWebPage)message.media;
// string url = string.Empty;
// if (tLMessageMediaWebPage.webpage.GetType().ToString() != "TeleSharp.TL.TLWebPageEmpty")
// {
// var webPage = (TLWebPage)tLMessageMediaWebPage.webpage;
// url = webPage.url;
// }
// _resultMessages.Add(new ChannelMessage
// {
// Id = message.id,
// ChannelId = chat.id,
// Content = message.message + @" : " + url,
// Type = EnChannelMessage.WebPage,
// Views = message.views ?? 0,
// });
// break;
}
}
}
}
return(_resultMessages);
}