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receiverthread.pas
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receiverthread.pas
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unit receiverthread;
{$mode ObjFPC}{$H+}
interface
uses
Classes, SysUtils, tgtypes, tgsendertypes, eventlog, tgbot
;
type
TLongPollingThread = class;
{ TThreadedBot }
TThreadedBot=class(TTelegramBot)
private
FThread: TLongPollingThread;
FCurrentCallback: TCallbackQueryObj;
procedure SynDoReceiveMessage;
procedure SynDoReceiveCallback;
procedure SynDoReceiveUpdate;
procedure SynDoReceiveEditedMessage;
public
procedure DoReceiveMessageUpdate(AMessage: TTelegramMessageObj); override;
procedure DoReceiveCallbackQuery(ACallback: TCallbackQueryObj); override;
procedure DoReceiveUpdate(AnUpdate: TTelegramUpdateObj); override;
procedure DoReceiveEditedMessage(AMessage: TTelegramMessageObj); override;
end;
{ TLongPollingThread }
TLongPollingThread=class(TThread)
private
FLogger: TEventLog;
FBot: TThreadedBot;
FOnReceiveCallack: TCallbackEvent;
FOnReceiveEditedMessage: TMessageEvent;
FOnReceiveMessageUpdate: TMessageEvent;
FOnReceiveUpdate: TOnUpdateEvent;
FTerminated: Boolean;
FLPTimeout: Integer;
function GetLogger: TEventLog;
procedure SetLogger(AValue: TEventLog);
property Logger: TEventLog read GetLogger write SetLogger;
public
constructor Create;
destructor Destroy; override;
procedure Execute; override;
property Bot: TThreadedBot read FBot;
property LongpollingTimeout: Integer read FLPTimeout write FLPTimeout;
property OnReceiveCallack: TCallbackEvent read FOnReceiveCallack write FOnReceiveCallack;
property OnReceiveMessageUpdate: TMessageEvent read FOnReceiveMessageUpdate write FOnReceiveMessageUpdate;
property OnReceiveUpdate: TOnUpdateEvent read FOnReceiveUpdate write FOnReceiveUpdate;
property OnReceiveEditedMessage: TMessageEvent read FOnReceiveEditedMessage write FOnReceiveEditedMessage;
end;
implementation
uses
LazFileUtils, FileUtil, LazUTF8, ssockets
;
{ TThreadedBot }
procedure TThreadedBot.SynDoReceiveMessage;
begin
FThread.FOnReceiveMessageUpdate(Self, CurrentMessage);
end;
procedure TThreadedBot.SynDoReceiveCallback;
begin
FThread.FOnReceiveCallack(Self, FCurrentCallback)
end;
procedure TThreadedBot.SynDoReceiveUpdate;
begin
FThread.FOnReceiveUpdate(Self, CurrentUpdate);
end;
procedure TThreadedBot.SynDoReceiveEditedMessage;
begin
FThread.FOnReceiveEditedMessage(Self, CurrentMessage);
end;
procedure TThreadedBot.DoReceiveMessageUpdate(AMessage: TTelegramMessageObj);
begin
inherited DoReceiveMessageUpdate(AMessage);
if Assigned(FThread.FOnReceiveMessageUpdate) and not UpdateProcessed then
FThread.Synchronize(@SynDoReceiveMessage);
end;
procedure TThreadedBot.DoReceiveCallbackQuery(ACallback: TCallbackQueryObj);
begin
inherited DoReceiveCallbackQuery(ACallback);
if Assigned(FThread.FOnReceiveCallack) and not UpdateProcessed then
begin
FCurrentCallback:=ACallback;
FThread.Synchronize(@SynDoReceiveCallback);
end;
end;
procedure TThreadedBot.DoReceiveUpdate(AnUpdate: TTelegramUpdateObj);
begin
inherited DoReceiveUpdate(AnUpdate);
if Assigned(FThread.FOnReceiveUpdate) and not UpdateProcessed then
FThread.Synchronize(@SynDoReceiveUpdate);
end;
procedure TThreadedBot.DoReceiveEditedMessage(AMessage: TTelegramMessageObj);
begin
inherited DoReceiveEditedMessage(AMessage);
if Assigned(FThread.FOnReceiveEditedMessage) and not UpdateProcessed then
FThread.Synchronize(@SynDoReceiveEditedMessage);
end;
{ TLongPollingThread }
procedure TLongPollingThread.SetLogger(AValue: TEventLog);
begin
if FLogger=AValue then Exit;
FLogger.Free;
FLogger:=AValue;
end;
function TLongPollingThread.GetLogger: TEventLog;
begin
if not Assigned(FLogger) then
begin
FLogger:=TEventLog.Create(nil);
FLogger.Identification:='Receiver thread';
FLogger.LogType:=ltFile;
FLogger.Active:=True;
FLogger.AppendContent:=True;
end;
Result:=FLogger;
end;
constructor TLongPollingThread.Create;
begin
inherited Create(True);
FreeOnTerminate:=True;
FBot:=TThreadedBot.Create(EmptyStr);
FBot.FThread:=self;
FBot.Logger:=Logger;
FTerminated:=False;
FLPTimeout:=4;
Logger.Info('Log started');
end;
destructor TLongPollingThread.Destroy;
begin
FreeAndNil(FBot);
FreeAndNil(FLogger);
inherited Destroy;
end;
procedure TLongPollingThread.Execute;
begin
while not Terminated do
try
FBot.getUpdatesEx(0, FLPTimeout);
except
on E: ESocketError do
begin
end;
{ Yes, it is doubtful.
It is necessary that if the connection to the network fails, the stream continues to work
It is possible to add more specialized exception handling
}
end;
end;
end.