HMG_QLine/lib/services/text_to_speech_service.dart

import 'dart:developer';
import 'package:flutter_tts/flutter_tts.dart';
import 'package:hmg_qline/models/global_config_model.dart';
import 'package:hmg_qline/models/ticket_model.dart';
import 'package:hmg_qline/utilities/enums.dart';
import 'package:hmg_qline/utilities/extensions.dart';

bool isNeedToBreakVoiceForArabic = false;

abstract class TextToSpeechService {
  Future<void> speechText({
    required TicketDetailsModel ticket,
    required GlobalConfigurationsModel globalConfigurationsModel,
  });

  void listenToTextToSpeechEvents({required Function() onVoiceCompleted});
}

class TextToSpeechServiceImp implements TextToSpeechService {
  FlutterTts textToSpeechInstance;

  TextToSpeechServiceImp({required this.textToSpeechInstance});

  double volume = 1.0;
  double pitch = 0.6;
  double rate = 0.2;

  @override
  Future<void> speechText({
    required TicketDetailsModel ticket,
    required GlobalConfigurationsModel globalConfigurationsModel,
  }) async {
    textToSpeechInstance.setVolume(1.0);
    textToSpeechInstance.setSpeechRate(0.45);
    textToSpeechInstance.setPitch(0.9);

    LanguageEnum langEnum = globalConfigurationsModel.voiceLanguageEnum;
    String preVoice = globalConfigurationsModel.ticketNoText;
    String postVoice = globalConfigurationsModel.postVoiceText;
    String ticketNo = ticket.ticketModel!.queueNo!.trim().toString();
    bool isClinicNameAdded = false;

    log("lang: ${await textToSpeechInstance.areLanguagesInstalled(["en", "ar"])}");
    log("lang: $langEnum");
    log("preVoice: $preVoice");
    log("postVoice: $postVoice");
    log("ticketNo: $ticketNo");
    log("isClinicNameAdded: $isClinicNameAdded");

    String clinicName = "";
    String patientAlpha = "";
    String patientNumeric = "";

    if (isClinicNameAdded) {
      var clinic = ticketNo.split(" ");
      clinicName = clinic[0];
      var queueNoArray = clinic[1].split("-");
      if (queueNoArray.length > 2) {
        patientAlpha = "${queueNoArray[0]} .. ${queueNoArray[1]}";
        patientNumeric = queueNoArray[2];
      } else {
        patientAlpha = queueNoArray[0];
        patientNumeric = queueNoArray[1];
      }
    } else {
      var queueNoArray = ticketNo.split("-");
      if (queueNoArray.length > 2) {
        patientAlpha = "${queueNoArray[0]} .. ${queueNoArray[1]}";
        patientNumeric = queueNoArray[2];
      } else {
        patientAlpha = queueNoArray[0];
        patientNumeric = queueNoArray[1];
      }
    }

    log("Speech: $preVoice .. $clinicName .. $patientAlpha .. $patientNumeric .. $postVoice");
    // Create Pre Voice Players
    if (postVoice.isNotEmpty) {
      log('lang $langEnum');
      if (langEnum != LanguageEnum.arabic) {
        await textToSpeechInstance.setLanguage(langEnum.enumToString());
        await textToSpeechInstance.speak("$preVoice .. $clinicName .. $patientAlpha .. $patientNumeric .. $postVoice");
        return;
      }

      await textToSpeechInstance.setLanguage(langEnum.enumToString());
      textToSpeechInstance.setPitch(1.1);
      if (isNeedToBreakVoiceForArabic) {
        await textToSpeechInstance.speak("$preVoice .. ");
        await textToSpeechInstance.setLanguage("en");
        await textToSpeechInstance.speak("$clinicName .. $patientAlpha .. $patientNumeric .. ");
        await textToSpeechInstance.setLanguage(langEnum.enumToString());
        await textToSpeechInstance.speak(postVoice);
      } else {
        log("here");
        await textToSpeechInstance.speak("$preVoice .. .. $clinicName .. $patientAlpha .. .. $patientNumeric .. .. $postVoice");
      }
    }
  }

  @override
  void listenToTextToSpeechEvents({required Function() onVoiceCompleted}) {
    textToSpeechInstance.setCompletionHandler(onVoiceCompleted);
  }
}