Telegram Bot

unit TeleBot;
 
interface
 
uses
  IdBaseComponent,
  IdComponent,
  IdTCPConnection,
  IdTCPClient,
  IdHTTP,
  IdIOHandler,
  IdIOHandlerSocket,
  IdIOHandlerStack,
  IdSSL,
  IdSSLOpenSSL,
  System.Classes,
  NetEncoding;
 
type
  TTeleBot = class
  private
    http: TIdHTTP;
    ssl: TIdSSLIOHandlerSocketOpenSSL;
    Token: string;
    ChatID: string;
  public
    constructor Create(AToken: string; AChatID: string);
    destructor Destroy;
    function SendString(AMsg: string): string;
    function SendStrings(AMsg: TStrings): string;
  end;
 
implementation
 
{ TTeleBot }
 
constructor TTeleBot.Create(AToken: string; AChatID: string);
begin
  inherited Create;
  http := TIdHTTP.Create(nil);
  ssl := TIdSSLIOHandlerSocketOpenSSL.Create(nil);
  ssl.SSLOptions.Method := sslvSSLv23;
  ssl.SSLOptions.Mode := sslmClient;
  ssl.SSLOptions.SSLVersions := [sslvSSLv2,sslvSSLv3,sslvTLSv1,sslvTLSv1_1,sslvTLSv1_2];
  http.IOHandler := ssl;
  Token := AToken;
  ChatID := AChatID;
end;
 
destructor TTeleBot.Destroy;
begin
  ssl.Free;
  http.Free;
  inherited;
end;
 
function TTeleBot.SendString(AMsg: string): string;
var
  URL: string;
begin
  URL := 'https://api.telegram.org/bot' + Token +
    '/sendMessage?chat_id=' + ChatID +
    '&text=' + TNetEncoding.URL.Encode(AMsg);
  try
    Result := http.Get(URL);
  except
    on E: EIdHTTPProtocolException do Result := E.ErrorMessage;
  end;
end;
 
function TTeleBot.SendStrings(AMsg: TStrings): string;
var
  URL: string;
  I: Byte;
begin
  URL := 'https://api.telegram.org/bot' + Token +
    '/sendMessage?chat_id=' + ChatID + '&text=';
  for I := 0 to AMsg.Count - 1 do begin
    URL := URL + TNetEncoding.URL.Encode(AMsg.Strings[I]);
    if I < AMsg.Count - 1 then URL := URL + '%0A';
  end;
  try
    Result := http.Get(URL);
  except
    on E: EIdHTTPProtocolException do Result := E.ErrorMessage;
  end;
end;
 
end.

unit TeleBot;
 
interface
 
uses
  System.Net.URLClient,
  System.Net.HttpClient,
  System.Net.HttpClientComponent,
  System.Classes,
  NetEncoding;
 
type
  TTeleBot = class
  private
    http: TNetHTTPClient;
    Token: string;
    ChatID: string;
    procedure httpRequestCompleted(const Sender: TObject;
      const AResponse: IHTTPResponse);
  public
    constructor Create(AToken: string; AChatID: string);
    destructor Destroy;
    function SendString(AMsg: string): string;
    function SendStrings(AMsg: TStrings): string;
  end;
 
implementation
 
{ TTeleBot }
 
constructor TTeleBot.Create(AToken: string; AChatID: string);
begin
  inherited Create;
  http := TNetHTTPClient.Create(nil);
  http.Asynchronous := True;
  Token := AToken;
  ChatID := AChatID;
end;
 
destructor TTeleBot.Destroy;
begin
  http.Free;
  inherited;
end;
 
procedure TTeleBot.httpRequestCompleted(const Sender: TObject;
  const AResponse: IHTTPResponse);
begin
 
end;
 
function TTeleBot.SendString(AMsg: string): string;
var
  URL: string;
begin
  URL := 'https://api.telegram.org/bot' + Token +
    '/sendMessage?chat_id=' + ChatID +
    '&text=' + TNetEncoding.URL.Encode(AMsg);
  Result := http.Get(URL).ContentAsString;
end;
 
function TTeleBot.SendStrings(AMsg: TStrings): string;
var
  URL: string;
  I: Byte;
begin
  URL := 'https://api.telegram.org/bot' + Token +
    '/sendMessage?chat_id=' + ChatID + '&text=';
  for I := 0 to AMsg.Count - 1 do begin
    URL := URL + TNetEncoding.URL.Encode(AMsg.Strings[I]);
    if I < AMsg.Count - 1 then URL := URL + '%0A';
  end;
  Result := http.Get(URL).ContentAsString;
end;
 
end.