// import the plugin
import { SpeechRecognition } from "nativescript-speech-recognition";

class SomeClass {
  private speechRecognition = new SpeechRecognition();
  
  public checkAvailability(): void {
    this.speechRecognition.available().then(
      (available: boolean) => console.log(available ? "YES!" : "NO"),
      (err: string) => console.log(err)
    );
  }
}

this.speechRecognition.requestPermission().then((granted: boolean) => {
  console.log("Granted? " + granted);
});

// import the options
import { SpeechRecognitionTranscription } from "nativescript-speech-recognition";

this.speechRecognition.startListening(
  {
    // optional, uses the device locale by default
    locale: "en-US",
    // set to true to get results back continuously
    returnPartialResults: true,
    // this callback will be invoked repeatedly during recognition
    onResult: (transcription: SpeechRecognitionTranscription) => {
      console.log(`User said: ${transcription.text}`);
      console.log(`User finished?: ${transcription.finished}`);
    },
    onError: (error: string | number) => {
      // because of the way iOS and Android differ, this is either:
      // - iOS: A 'string', describing the issue. 
      // - Android: A 'number', referencing an 'ERROR_*' constant from https://developer.android.com/reference/android/speech/SpeechRecognizer.
      //            If that code is either 6 or 7 you may want to restart listening.
    }
  }
).then(
  (started: boolean) => { console.log(`started listening`) },
  (errorMessage: string) => { console.log(`Error: ${errorMessage}`); }
).catch((error: string | number) => {
  // same as the 'onError' handler, but this may not return if the error occurs after listening has successfully started (because that resolves the promise,
  // hence the' onError' handler was created.
});

this.speechRecognition.stopListening().then(
  () => { console.log(`stopped listening`) },
  (errorMessage: string) => { console.log(`Stop error: ${errorMessage}`); }
);