deviceList

package com.repoai.myhome.Devices;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.Manifest;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.backendless.Backendless;
import com.backendless.async.callback.AsyncCallback;
import com.backendless.exceptions.BackendlessFault;
import com.backendless.files.BackendlessFile;
import com.backendless.persistence.DataQueryBuilder;
import com.repoai.myhome.R;
import com.repoai.myhome.Rooms.Rooms;
import com.sdsmdg.tastytoast.TastyToast;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

public class DeviceList extends AppCompatActivity {
    Context context;
    List<Devices> deviceList;
    List<DeviceTypes> deviceTypesList;
    ListView myDeviceList;
    String roomName;
    ImageButton imageButton;
    boolean hasCamera = false;
    String fileName;
    String roomUUID;
    Rooms myRoom;
    TextView numODevices;
    Bitmap b;
    ImageView myImage;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_device_list);
        this.roomName = getIntent().getStringExtra("roomName");
        this.roomUUID = getIntent().getStringExtra("roomUUID");
        setPointer();
        numODevices=findViewById(R.id.roomItemDevices);
        getPermissions();
    }

    private void getPermissions() {
        List<String> listPermissionNeeded = new ArrayList<>();
        //check if we have permission
        int camPerm = ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA);
        int writePerm = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
        int readPerm = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE);
        if (camPerm != PackageManager.PERMISSION_GRANTED) {
            listPermissionNeeded.add(Manifest.permission.CAMERA);
        }
        if (writePerm != PackageManager.PERMISSION_GRANTED) {
            listPermissionNeeded.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
        }
        if (readPerm != PackageManager.PERMISSION_GRANTED) {
            listPermissionNeeded.add(Manifest.permission.READ_EXTERNAL_STORAGE);
        }
        if (listPermissionNeeded.isEmpty()) {
            hasCamera = true;
        } else {
            ActivityCompat.requestPermissions(this, listPermissionNeeded.toArray(new String[listPermissionNeeded.size()]), 100);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            //fire the camera dispatch
            hasCamera = true;
        } else {
            Toast.makeText(context, "you need to grant all permissions", Toast.LENGTH_SHORT).show();
        }
    }

    private void getData() {
        String whereClause = "objectId = '" + this.roomUUID + "'";
        DataQueryBuilder queryBuilder = DataQueryBuilder.create();
        queryBuilder.setWhereClause(whereClause);
        queryBuilder.setPageSize(100);

        Backendless.Data.of(Rooms.class).find(queryBuilder, new AsyncCallback<List<Rooms>>() {
            @Override
            public void handleResponse(List<Rooms> response) {
                myRoom = response.get(0);
                deviceList = myRoom.getDevices();
                DeviceAdapter adapter = new DeviceAdapter(context, deviceList);
                myDeviceList.setAdapter(adapter);
            }

            @Override
            public void handleFault(BackendlessFault fault) {
                TastyToast.makeText(context, fault.getMessage(), TastyToast.LENGTH_LONG, TastyToast.ERROR).show();
            }
        });
    }

    private void setPointer() {

        this.context = this;
        setMyDevices();
        myDeviceList = findViewById(R.id.lstDevices);
        ((TextView) findViewById(R.id.devicesRoomName)).setText(this.roomName);
        findViewById(R.id.addDevice).setOnClickListener(view -> addNewDeviceDialog());
        findViewById(R.id.imageButton).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (hasCamera) {
                    takePhoto();
                } else {
                    TastyToast.makeText(context, "We dont have camera permissions", TastyToast.LENGTH_LONG, TastyToast.CONFUSING).show();
                    getPermissions();
                }
            }
        });
        getData();
    }

    public class information extends AsyncTask<String, String, String> {
        @Override
        protected String doInBackground(String... arg0) {

            try{
                URL url = new URL("https://backendlessappcontent.com/344AF76F-1202-003F-FF47-57AD623DE600/25FDFC2D-BDFA-80C0-FFDD-DEA6915E2200/files/rooms/"+roomName+".jpg");
                InputStream is = new BufferedInputStream(url.openStream());
                Bitmap b = BitmapFactory.decodeStream(is);

            } catch(Exception e){}
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            if(b==null){
                myImage.setImageResource(R.drawable.living_room);
            }else {
                myImage.setImageBitmap(b);
            }

        }
    }

    public void takePhoto() {
        //to avoid api26 policy restrictions.
        StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
        StrictMode.setVmPolicy(builder.build());
        //we call the android image capture
        Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
        //we creating a filename so we can use it later on and put the picture inside the imageView
        fileName = Environment.getExternalStorageDirectory() + File.separator + UUID.randomUUID().toString() + ".jpg";
        File file = new File(fileName);
        //we setting a global pointer to the file location
        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));
        //since it can create exception, we surroud it with try/catch block to avoid exception and application crash
        try {
            startActivityForResult(intent, 200);
        } catch (Exception e) {
            Log.e("camera", "dispatchTakeImageIntent: error in dispatch camera");
        }

    }

    private void setMyDevices() {
        deviceTypesList = new ArrayList<>();
        deviceTypesList.add(new DeviceTypes("TV", R.drawable.tv));
        deviceTypesList.add(new DeviceTypes("Curtain", R.drawable.curtain));
        deviceTypesList.add(new DeviceTypes("Light", R.drawable.light));
        deviceTypesList.add(new DeviceTypes("Boiler", R.drawable.boiler));
        deviceTypesList.add(new DeviceTypes("Air Condition", R.drawable.aircondition));

    }

    private void addNewDeviceDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        builder.setTitle("Add Device to the Room");
        //create the view for the alert dialog
        View myView = LayoutInflater.from(context).inflate(R.layout.new_device_list, null);
        //create the view
        ListView myDevicesTypeList = myView.findViewById(R.id.deviceTypeList);
        DeviceTypesAdapter myAdapter = new DeviceTypesAdapter(context, deviceTypesList);
        myDevicesTypeList.setAdapter(myAdapter);

        //create the builder
        builder.setView(myView);
        builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                dialogInterface.dismiss();
            }
        });
        final AlertDialog deviceDialog = builder.create();
        deviceDialog.show();

        //handle on item click
        myDevicesTypeList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int index, long l) {
                //deviceDialog.dismiss();
                //Log.e("item", "onItemClick: " + deviceList.get(index).getDeviceName());
                //add device by type:
                Devices newDevice = new Devices();
                switch (index) {
                    case 0:
                        newDevice.setDeviceName("Tv");
                        //newDevice.setDeviceIcon(R.drawable.tv);
                        break;
                    case 1:
                        newDevice.setDeviceName("Curtain");
                        //newDevice.setDeviceIcon(R.drawable.curtain);
                        break;

                    case 2:
                        newDevice.setDeviceName("Light");
                        //newDevice.setDeviceIcon(R.drawable.light);
                        break;

                    case 3:
                        newDevice.setDeviceName("Boiler");
                        //newDevice.setDeviceIcon(R.drawable.boiler);
                        break;

                    case 4:
                        newDevice.setDeviceName("Air Condition");
                        //newDevice.setDeviceIcon(R.drawable.aircondition);
                        break;

                }
                newDevice.saveAsync(new AsyncCallback<Devices>() {
                    @Override
                    public void handleResponse(Devices response) {
                        TastyToast.makeText(context, "Device list was updated", TastyToast.LENGTH_LONG, TastyToast.SUCCESS).show();
                        //parent
                        HashMap<String, Object> parentObject = new HashMap<String, Object>();
                        parentObject.put("objectId", getIntent().getStringExtra("roomUUID"));
                        //child
                        HashMap<String, Object> childObject = new HashMap<String, Object>();
                        childObject.put("objectId", response.getObjectId());
                        //set children list (in our case only one child)
                        ArrayList<Map> childrens = new ArrayList<>();
                        childrens.add(childObject);
                        //create a relation between father and child
                        Backendless.Data.of("Rooms").setRelation(parentObject, "devices", childrens,
                                new AsyncCallback<Integer>() {
                                    @Override
                                    public void handleResponse(Integer response) {
                                        Log.e("relation", "handleResponse: created");
                                    }

                                    @Override
                                    public void handleFault(BackendlessFault fault) {
                                        Log.e("MYAPP", "server reported an error - " + fault.getMessage());
                                    }
                                });

                    }

                    @Override
                    public void handleFault(BackendlessFault fault) {
                        TastyToast.makeText(context, fault.getMessage() , TastyToast.LENGTH_LONG, TastyToast.CONFUSING).show();

                    }
                });
                deviceDialog.dismiss();
                deviceList.add(newDevice);
                DeviceAdapter adapter = new DeviceAdapter(context, deviceList);
                myDeviceList.setAdapter(adapter);

            }
        });

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 200) {
            try {
                //get our saved file into a bitmap object
                Log.e("file", "onActivityResult: " + fileName);
                final File file = new File(fileName);

                //read the image from the file and convert it to bitmap
                Bitmap myBitmap = BitmapFactory.decodeFile(fileName);

                //get exif data (extra information) from the image so we will know the oriention of the image
                ExifInterface exif = null;
                try {
                    exif = new ExifInterface(fileName);
                } catch (IOException e) {
                    e.printStackTrace();
                }

                assert exif != null;
                //get the image orienation
                int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
                //we will rotate the image with method
                Bitmap bm = rotateImage(myBitmap, orientation);
                //myImage.setImageBitmap(bm);
                ((ImageView) findViewById(R.id.roomImage)).setImageBitmap(bm);
                //save new image to backendless
                Backendless.Files.Android.upload(bm, Bitmap.CompressFormat.JPEG, 50, roomName + ".jpg", "rooms",true, new AsyncCallback<BackendlessFile>() {
                    @Override
                    public void handleResponse(BackendlessFile response) {
                        ((ImageView) findViewById(R.id.roomImage)).setImageBitmap(bm);
                        Log.e("image", "handleResponse: " + response.getFileURL());
                    }

                    @Override
                    public void handleFault(BackendlessFault fault) {

                    }
                });

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    private Bitmap rotateImage(Bitmap myBitmap, int orientation) {
        //we create a matrix, so we can put the image on it and just rotate
        //it will be faster then copy pixel by pixel
        Matrix matrix = new Matrix();
        //depending on the orientation that we got from the exif we will rotate
        //in this sample we will deall with all kind of rotating from api 15 to api 29
        switch (orientation) {
            case ExifInterface.ORIENTATION_NORMAL:
                //all is o.k. no need to rotate just return the image
                break;
            case ExifInterface.ORIENTATION_FLIP_HORIZONTAL:
                //flip the matrix horzintal
                matrix.setScale(-1, 1);
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                //rotate the matrix 180 degress
                matrix.setRotate(180);
                break;
            case ExifInterface.ORIENTATION_FLIP_VERTICAL:
                //flip the matrix vertical
                matrix.setRotate(180);
                matrix.postScale(-1, 1);
                break;
            case ExifInterface.ORIENTATION_TRANSPOSE:
                //rotate 90 degress and flip
                matrix.setRotate(90);
                matrix.postScale(-1, 1);
                break;
            case ExifInterface.ORIENTATION_ROTATE_90:
                //rotate 90 degress and flip
                matrix.setRotate(90);
                break;
            case ExifInterface.ORIENTATION_TRANSVERSE:
                //rotate 90 degress to other side and flip
                matrix.setRotate(-90);
                matrix.postScale(-1, 1);
                break;
            case ExifInterface.ORIENTATION_ROTATE_270:
                //rotate 90 degres to other side
                matrix.setRotate(-90);
                break;
            default:
                return myBitmap;
        }
        try {
            //create an image from our rotated matrix
            Bitmap bmRotated = Bitmap.createBitmap(myBitmap, 0, 0, myBitmap.getWidth(), myBitmap.getHeight(), matrix, true);
            //recycke the data by calling a garbage collector
            //in this case, we free memory for big pictures
            myBitmap.recycle();
            //return the rotated image
            return bmRotated;
        } catch (OutOfMemoryError e) {
            //if we have a memory leak , we need to know about it
            e.printStackTrace();
            return myBitmap;
        }
    }
}