/// Emoji list: https://unicode.org/emoji/charts/full-emoji-list.html
  /// To remove reaction, set [emoji] to null
  Future sendReactionToMessage({
    required MessageId messageId,
    String? emoji,
  }) async {
    String? serialized = messageId.serialized;
    return await wpClient.evaluateJs(
      '''WPP.chat.sendReactionToMessage(${serialized.jsParse}, ${emoji != null ? emoji.jsParse : false});''',
      methodName: "sendReactionToMessage",
    );
  }

  /// [forwardTextMessage] may throw errors if passed an invalid contact
  /// or if this method completed without any issue , then probably message sent successfully
  Future forwardTextMessage({
    required String phone,
    required MessageId messageId,
    bool displayCaptionText = false,
    bool multicast = false,
  }) async {
    String? serialized = messageId.serialized;
    return await wpClient.evaluateJs('''WPP.chat.forwardMessage(${phone.phoneParse}, ${serialized.jsParse}, {
            displayCaptionText: $displayCaptionText,
            multicast: $multicast,
          });''', methodName: "forwardMessage");
  }

class Message {
  Message({
    required this.id,
    required this.body,
    required this.type,
    required this.t,
    required this.notifyName,
    required this.from,
    required this.to,
    required this.self,
    required this.isNewMsg,
    required this.star,
    required this.kicNotified,
    required this.recvFresh,
    required this.isFromTemplate,
    required this.pollInvalidated,
    required this.broadcast,
    required this.isForwarded,
    required this.hasReaction,
    required this.ephemeralOutOfSync,
    required this.productHeaderImageRejected,
    required this.lastPlaybackProgress,
    required this.isDynamicReplyButtonsMsg,
    required this.isMdHistoryMsg,
    required this.stickerSentTs,
    required this.requiresDirectConnection,
    required this.pttForwardedFeaturesEnabled,
    required this.caption,
  });

  final MessageId? id;
  final String body;
  final String type;
  final int t;
  final String notifyName;
  final String from;
  final String to;
  final String self;
  final bool isNewMsg;
  final bool star;
  final bool kicNotified;
  final bool recvFresh;
  final bool isFromTemplate;
  final bool pollInvalidated;
  final bool broadcast;
  final bool isForwarded;
  final bool hasReaction;
  final bool ephemeralOutOfSync;
  final bool productHeaderImageRejected;
  final int lastPlaybackProgress;
  final bool isDynamicReplyButtonsMsg;
  final bool isMdHistoryMsg;
  final int stickerSentTs;
  final bool requiresDirectConnection;
  final bool pttForwardedFeaturesEnabled;
  final String caption;

  Message copyWith({
    MessageId? id,
    String? body,
    String? type,
    int? t,
    String? notifyName,
    String? from,
    String? to,
    String? self,
    int? ack,
    bool? isNewMsg,
    bool? star,
    bool? kicNotified,
    bool? recvFresh,
    bool? isFromTemplate,
    bool? pollInvalidated,
    bool? broadcast,
    bool? isForwarded,
    bool? hasReaction,
    bool? ephemeralOutOfSync,
    bool? productHeaderImageRejected,
    int? lastPlaybackProgress,
    bool? isDynamicReplyButtonsMsg,
    bool? isMdHistoryMsg,
    int? stickerSentTs,
    bool? requiresDirectConnection,
    bool? pttForwardedFeaturesEnabled,
    String? caption,
  }) {
    return Message(
      id: id ?? this.id,
      body: body ?? this.body,
      type: type ?? this.type,
      t: t ?? this.t,
      notifyName: notifyName ?? this.notifyName,
      from: from ?? this.from,
      to: to ?? this.to,
      self: self ?? this.self,
      isNewMsg: isNewMsg ?? this.isNewMsg,
      star: star ?? this.star,
      kicNotified: kicNotified ?? this.kicNotified,
      recvFresh: recvFresh ?? this.recvFresh,
      isFromTemplate: isFromTemplate ?? this.isFromTemplate,
      pollInvalidated: pollInvalidated ?? this.pollInvalidated,
      broadcast: broadcast ?? this.broadcast,
      isForwarded: isForwarded ?? this.isForwarded,
      hasReaction: hasReaction ?? this.hasReaction,
      ephemeralOutOfSync: ephemeralOutOfSync ?? this.ephemeralOutOfSync,
      productHeaderImageRejected: productHeaderImageRejected ?? this.productHeaderImageRejected,
      lastPlaybackProgress: lastPlaybackProgress ?? this.lastPlaybackProgress,
      isDynamicReplyButtonsMsg: isDynamicReplyButtonsMsg ?? this.isDynamicReplyButtonsMsg,
      isMdHistoryMsg: isMdHistoryMsg ?? this.isMdHistoryMsg,
      stickerSentTs: stickerSentTs ?? this.stickerSentTs,
      requiresDirectConnection: requiresDirectConnection ?? this.requiresDirectConnection,
      pttForwardedFeaturesEnabled: pttForwardedFeaturesEnabled ?? this.pttForwardedFeaturesEnabled,
      caption: caption ?? this.caption,
    );
  }

  factory Message.fromJson(Map<String, dynamic> json) {
    return Message(
      id: json["id"] == null ? null : MessageId.fromJson(json["id"]),
      body: json["body"] ?? "",
      type: json["type"] ?? "",
      t: json["t"] ?? 0,
      notifyName: json["notifyName"] ?? "",
      from: json["from"] ?? "",
      to: json["to"] ?? "",
      self: json["self"] ?? "",
      isNewMsg: json["isNewMsg"] ?? false,
      star: json["star"] ?? false,
      kicNotified: json["kicNotified"] ?? false,
      recvFresh: json["recvFresh"] ?? false,
      isFromTemplate: json["isFromTemplate"] ?? false,
      pollInvalidated: json["pollInvalidated"] ?? false,
      broadcast: json["broadcast"] ?? false,
      isForwarded: json["isForwarded"] ?? false,
      hasReaction: json["hasReaction"] ?? false,
      ephemeralOutOfSync: json["ephemeralOutOfSync"] ?? false,
      productHeaderImageRejected: json["productHeaderImageRejected"] ?? false,
      lastPlaybackProgress: json["lastPlaybackProgress"] ?? 0,
      isDynamicReplyButtonsMsg: json["isDynamicReplyButtonsMsg"] ?? false,
      isMdHistoryMsg: json["isMdHistoryMsg"] ?? false,
      stickerSentTs: json["stickerSentTs"] ?? 0,
      requiresDirectConnection: json["requiresDirectConnection"] ?? false,
      pttForwardedFeaturesEnabled: json["pttForwardedFeaturesEnabled"] ?? false,
      caption: json["caption"] ?? "",
    );
  }

  Map<String, dynamic> toJson() => {
        "id": id?.toJson(),
        "body": body,
        "type": type,
        "t": t,
        "notifyName": notifyName,
        "from": from,
        "to": to,
        "self": self,
        "isNewMsg": isNewMsg,
        "star": star,
        "kicNotified": kicNotified,
        "recvFresh": recvFresh,
        "isFromTemplate": isFromTemplate,
        "pollInvalidated": pollInvalidated,
        "broadcast": broadcast,
        "isForwarded": isForwarded,
        "hasReaction": hasReaction,
        "ephemeralOutOfSync": ephemeralOutOfSync,
        "productHeaderImageRejected": productHeaderImageRejected,
        "lastPlaybackProgress": lastPlaybackProgress,
        "isDynamicReplyButtonsMsg": isDynamicReplyButtonsMsg,
        "isMdHistoryMsg": isMdHistoryMsg,
        "stickerSentTs": stickerSentTs,
        "requiresDirectConnection": requiresDirectConnection,
        "pttForwardedFeaturesEnabled": pttForwardedFeaturesEnabled,
        "caption": caption,
      };
}

  /// Send emoji reaction to message
  /// Emoji list: https://unicode.org/emoji/charts/full-emoji-list.html
  /// To remove reaction, set [emoji] to null
  Future sendReactionToMessage({
    required MessageId messageId,
    String? emoji,
  }) async {
    final serialized = messageId.serialized;
    return wpClient.evaluateJs(
      '''WPP.chat.sendReactionToMessage(${serialized.jsParse}, ${emoji != null ? emoji.jsParse : false});''',
      methodName: 'sendReactionToMessage',
    );
  }

const groupId = "[email protected]";

       client.chat.deleteMessages(
       phone: groupId,
       messageIds: <String>["3EB046A9842E96D7F"],
    );

void _sendMessage() async {
  setState(() => _processing = 'Initializing WhatsApp Chatbot');

  final client = await WhatsappBotFlutterMobile.connect(
    saveSession: true,
    onConnectionEvent: (event) => debugPrintSynchronously('Connection Event: ${event.name}'),
    onQrCode: (qrCodeUrl, qrCodeImage) {
      debugPrintSynchronously('Connection QR Code URL: $qrCodeUrl');
    },
  ).catchError((error) {
    debugPrintSynchronously('There was an error initializing the whatsapp client: $error');
    return null;
  });

  if (client == null) {
    ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
      backgroundColor: Clr.red,
      content: Text('WhatsApp Connection Failed. Client is null'),
    ));
    setState(() => _processing = null);
    return;
  }

  setState(() => _processing = 'Sending Message');
  if (_text.isNotEmpty) await client.chat.sendTextMessage(phone: '918892100457', message: _text);
}

WhatsappClient client = await WhatsappBotFlutter.connect(
      sessionDirectory: './chrome/cache',
      chromiumDownloadDirectory: './chrome/local-chromium',
      headless: false,
      onConnectionEvent: (ConnectionEvent event) {
        print(event.toString());
      },
      onQrCode: (String qr, Uint8List? imageBytes) {
        final qrText = WhatsappBotUtils.convertStringToQrCode(qr);
        print(qrText);
      },
      onBrowserCreated: (browser) {
        pid = browser.process?.pid ?? 0;
        print('pid=$pid');
        file.writeAsStringSync(pid.toString());
      },
    );