package ca.jeandrepetzer.lab4;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.CompoundButton;
import android.widget.TextView;
import android.widget.ToggleButton;
//AlertDialog for showing error if flash is not available
import android.app.AlertDialog;

import java.util.HashMap;
import java.util.StringTokenizer;

public class MainActivity extends AppCompatActivity {

    private ToggleButton toggleButton;
    private CameraManager mCameraManager;
    private String mCameraId;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        boolean isFlashAvailable = getApplicationContext().getPackageManager()
                .hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);

        if (!isFlashAvailable) {
            showNoFlashError();
        }

        // Getting the camera manager and camera id of the phone
        mCameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
        try {
            mCameraId = mCameraManager.getCameraIdList()[0];
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }

        toggleButton = findViewById(R.id.toggleButton);
        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                //called when the button status is changed
                switchFlashLight(isChecked);
            }
        });

        // Results in 3 objects in memory - inefficient (Use StringBuffer instead)
        // Android garbage collector will remove the unused variables in memory periodically
        //String cat = "c";
        //cat = cat + "a";
        //cat = cat + "t";

        StringBuffer sb = new StringBuffer();
        sb.append("B");
        sb.append("u");
        sb.append("i");
        sb.append("l");
        sb.append("d");
        sb.append("e");
        sb.append("r");
        sb.append(".com");
        Log.d("itas123", sb.toString());

        //  To break a string into individual words by a delimeter
        String line = "The cat ate my hat";
        String words[] = line.split(" "); // split using space as the delimeter

        //  This while loop should go through the individual words (e.g. first word will be "this")
        //      for (int i=0; i<words.length; i++) {
        //          Log.d("itas123","Here is the next word: " + words[i]);
        //      }
        for (String word : words) {
            Log.d("itas123", "Here is the next word: " + word);
        }

        // Hash <ap
        //HashMap<String, String> wordMap;
        //wordMap = new HashMap<String, String>();

        // We put key/value pairs into this map (or maybe call it dictionary)
        //wordMap.put("evil","cat");
        //wordMap.put("war","party");
        //wordMap.put("good","dogs");

        // Retrieve a string from a hashMap - This is way more efficient than the OG way of
        // looping through the entire array to find evil's value
        // String myCat = wordMap.get("evil");

        String paragraph1 = "We're taking action against evil people. Because this great nation of many religions understands, our war is not against Islam, or against faith practiced by the Muslim people. Our war is a war against evil. This is clearly a case of good versus evil, and make no mistake about it - good will prevail.\n";
        //String paragraph1Words[] = paragraph1.split("[ ,]+");
        StringBuffer modifiedParagraph = new StringBuffer();

        HashMap<String, String> wordMap;
        wordMap = new HashMap<String, String>();

        wordMap.put("evil", "cat");
        wordMap.put("war", "party");
        wordMap.put("good", "dogs");
        wordMap.put("Islam", "animals");
        wordMap.put("Muslim", "furry");

        StringTokenizer tokens = new StringTokenizer(paragraph1," .,",true);
        while (tokens.hasMoreTokens()) {
            String wordKey = tokens.nextToken();
            String matchedWord = wordMap.get(wordKey);
            if (matchedWord != null) {
                modifiedParagraph.append(matchedWord);
            } else {
                modifiedParagraph.append(wordKey);
            }
        }

        //for (String paragraph1Word : paragraph1Words) {
        //    wordMap.put(paragraph1Word, paragraph1Word);
        //}



        //StringBuffer modifiedParagraph = new StringBuffer();

        //for (String paragraph1Word : paragraph1Words) {
        //    String newParagraphWord = wordMap.get(paragraph1Word) + " ";
        //    modifiedParagraph.append(newParagraphWord);
        //}

        Log.d("itas123", modifiedParagraph.toString());

        TextView fillBox = findViewById(R.id.fillBox);
        fillBox.setText(modifiedParagraph.toString());

    }

    public void showNoFlashError() {
        AlertDialog alert = new AlertDialog.Builder(this)
                .create();
        alert.setTitle("Oops!");
        alert.setMessage("Flash not available in this device...");
        alert.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                finish();
            }
        });
        alert.show();
    }

    public void switchFlashLight(boolean status) {
        try {
            mCameraManager.setTorchMode(mCameraId, status);
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }

}