package org.recorder;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Spinner;


/**
 *
 * @author John
 * Speech To Text(Text) - To Speech
 */

public class TtS extends Activity implements OnInitListener, OnClickListener {

    private TextToSpeech mTts;
    String textToSpeak = "No text Entered";
    String language = "English";
    int MY_DATA_CHECK_CODE = 0;
    private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;
    private ListView mList;
    private EditText input;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        final Button button = (Button) findViewById(R.id.button01);
        final Button speakButton = (Button) findViewById(R.id.button02);
        mList = (ListView) findViewById(R.id.ListView01);
        mList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                input.setText((String) arg0.getItemAtPosition(arg2));
            }
          });
        input = (EditText) findViewById(R.id.input);
        Spinner lang = (Spinner) findViewById(R.id.language);
        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
        this, R.array.langs, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        lang.setAdapter(adapter);
        lang.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
                    public void onItemSelected(AdapterView<?> parent,
                            View view, int pos, long id) {
                            Object item = parent.getItemAtPosition(pos);
                            language = (String) item;
                    }

                    public void onNothingSelected(AdapterView<?> parent) {
                    }
                });
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                textToSpeak = input.getText().toString();
                if (textToSpeak.length() == 0)
                    textToSpeak = "No text Entered.";
                    speak();
            }
        });
        // Check to see if a recognition activity is present
        PackageManager pm = getPackageManager();
        List<ResolveInfo> activities = pm.queryIntentActivities(
                new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
        if (activities.size() != 0) {
            speakButton.setOnClickListener(this);
        } else {
            speakButton.setEnabled(false);
            speakButton.setText("Recognizer not present");
        }
        Intent checkIntent = new Intent();
        checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
        startActivityForResult(checkIntent, MY_DATA_CHECK_CODE);
        mTts = new TextToSpeech(this, this);
    }

    @Override
    public void onInit(int arg0) {
        // TODO Auto-generated method stub
    }

    public Locale assignLang() {
        if (language.equalsIgnoreCase("us english"))
            return Locale.US;
        if (language.equalsIgnoreCase("uk english"))
            return Locale.UK;
        if (language.equalsIgnoreCase("Italian"))
            return Locale.ITALIAN;
        if (language.equalsIgnoreCase("chinese"))
            return Locale.CHINESE;
        if (language.equalsIgnoreCase("german"))
            return Locale.GERMAN;
        if (language.equalsIgnoreCase("canadian"))
            return Locale.CANADA;
        if (language.equalsIgnoreCase("french-canadian"))
            return Locale.CANADA_FRENCH;
        if (language.equalsIgnoreCase("japenese"))
            return Locale.JAPANESE;
        if (language.equalsIgnoreCase("korean"))
            return Locale.KOREAN;
        if (language.equalsIgnoreCase("taiwanese"))
            return Locale.TAIWAN;
        return Locale.ENGLISH;
    }

    public void speak() {
        mTts.setLanguage(assignLang());
        mTts.speak(textToSpeak, TextToSpeech.QUEUE_FLUSH, null);
    }

    public void onClick(View v) {
        if (v.getId() == R.id.button02) {
            startVoiceRecognitionActivity();
        }
    }

    /**
     * Fire an intent to start the speech recognition activity.
     */
    private void startVoiceRecognitionActivity() {
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speech recognition demo");
        startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
    }

    /**
     * Handle the results from the recognition activity.
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) {
            // Fill the list view with the strings the recognizer thought it could have heard
            ArrayList<String> matches = data.getStringArrayListExtra(
                    RecognizerIntent.EXTRA_RESULTS);
            mList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
                    matches));
        }

        super.onActivityResult(requestCode, resultCode, data);
    }


}