WhatsappBotFlutter.connect(
  onQrCode: (String qr) {
    // there we will get QrCode string use any library to convert string to qrcode and scan
  },
  onError: (String er) {
    // listen for errors
  },
  onSuccess: () {
    // if we received this callback , it means we are connected to whatsapp
  },
  progress: (int prg) {
    // we can listen for progress update
  },
);

WhatsappBotFlutter.sendTextMessage(
    countryCode: "91",
    phone: "------",
    message: "Test Message",
);

await WhatsappBotFlutter.sendFileMessage(
    countryCode: "91",
    phone: "------",
    fileBytes: imageBytes, // Pass file bytes
    caption: "Test Message", // Optional
    fileType: fileType, // document, image, audio
  ;

WhatsappBotFlutter.messageEvents.listen((Message message) {
  // Got whatsapp messages ...
});

WhatsappBotFlutter.connectionEventStream.listen((event) {
  // Got Connection Events ...
});