package com.example.greenwatch;

import androidx.appcompat.app.AppCompatActivity;
import androidx.camera.lifecycle.ProcessCameraProvider;
import androidx.core.content.ContextCompat;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.example.greenwatch.adapters.AlarmHistoryListAdapter;
import com.example.greenwatch.adapters.DeviceListAdapter;
import com.example.greenwatch.models.Device;
import com.example.greenwatch.viewmodels.AccelerometerViewModel;
import com.example.greenwatch.viewmodels.VideodetectionAndAccelerometerViewModel;
import com.example.greenwatch.viewmodels.VideodetectionViewModel;
import com.google.common.util.concurrent.ListenableFuture;

import java.util.List;
import java.util.concurrent.ExecutionException;

public class VideodetectionAndAccelerometerActivity extends AppCompatActivity implements SensorEventListener {
    private SensorManager accelerometerManager;
    private Sensor accelerometerSensor;
    private TextView videodetectionAndAccelerometerStatusMessage;
    private TextView videodetectionAndAccelerometerDataTV;
    private TextView tvVideodetectionAndAccelerometerDeviceListRecyclerView;
    private TextView tvVideodetectionAndAccelerometerAlarmHistoryListRecyclerView;
    private Button backToMainActivity;
    private VideodetectionAndAccelerometerViewModel mVideodetectionAndAccelerometerViewModel;
    private Permission permission = new Permission();

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

        videodetectionAndAccelerometerStatusMessage = (TextView) findViewById(R.id.tvvideodetectionAndAccelerometerStatusmessage);
        videodetectionAndAccelerometerDataTV = (TextView) findViewById(R.id.tvvideodetectionAndAccelerometerData);
        tvVideodetectionAndAccelerometerDeviceListRecyclerView = (TextView) findViewById(R.id.tvVideodetectionAndAccelerometerDeviceListRecyclerView);
        tvVideodetectionAndAccelerometerAlarmHistoryListRecyclerView = (TextView) findViewById(R.id.tvVideodetectionAndAccelerometerAlarmHistoryListRecyclerView);
        backToMainActivity = (Button) findViewById(R.id.videodetectionAndAccelerometerBackToMainActivity);

        RecyclerView recyclerView = findViewById(R.id.deviceListRecyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setHasFixedSize(true);

        final DeviceListAdapter deviceListAdapter = new DeviceListAdapter();
        recyclerView.setAdapter(deviceListAdapter);

        RecyclerView alarmHistoryListRecyclerView = findViewById(R.id.alarmHistoryListRecyclerView);
        alarmHistoryListRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        alarmHistoryListRecyclerView.setHasFixedSize(true);

        final AlarmHistoryListAdapter alarmHistoryListAdapter  = new AlarmHistoryListAdapter();
        alarmHistoryListRecyclerView.setAdapter(alarmHistoryListAdapter);

        backToMainActivity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });

        mVideodetectionAndAccelerometerViewModel = new ViewModelProvider(this).get(VideodetectionAndAccelerometerViewModel.class);
        mVideodetectionAndAccelerometerViewModel.init();
        mVideodetectionAndAccelerometerViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
            @Override
            public void onChanged(List<Device> devices) {
                deviceListAdapter.setDevices(devices);
            }
        });

        mVideodetectionAndAccelerometerViewModel.getAlarmHistoryList().observe(this, new Observer<List<Device>>() {
            @Override
            public void onChanged(List<Device> devices) {
                alarmHistoryListAdapter.setAlarmHistoryList(devices);
            }
        });

        mVideodetectionAndAccelerometerViewModel.getStartAlarmRecording().observe(this, new Observer<Boolean>() {
            @Override
            public void onChanged(Boolean aBoolean) {
                if (aBoolean) {
                    if(permission.alarmRechtePruefen(VideodetectionAndAccelerometerActivity.this, VideodetectionAndAccelerometerActivity.this)){
                        Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
                        //todo AlarmHandling einfügen
                    } else {
                        permission.alarmRechteAnfordern(VideodetectionAndAccelerometerActivity.this);
                        if(permission.alarmRechtePruefen(VideodetectionAndAccelerometerActivity.this, VideodetectionAndAccelerometerActivity.this)){
                            Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
                            //todo Alarmhandling einfügen
                        } else {
                            Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
                        }
                    }
                }
                else {
                    Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
                }
            }
        });

        mVideodetectionAndAccelerometerViewModel.getVideodetectionAndAccelerometerAlarmDetected().observe(this, new Observer<Boolean>() {
            @Override
            public void onChanged(Boolean aBoolean) {
                if (aBoolean) {
                    if (mVideodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected() && !mVideodetectionAndAccelerometerViewModel.getVideoAlarmDetected()) {
                        mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "Accelerometer", mVideodetectionAndAccelerometerViewModel.getAccelerometerSensorMeanValue());
                    }
                    else if (mVideodetectionAndAccelerometerViewModel.getVideoAlarmDetected() && !mVideodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected()) {
                        mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "Video", 1.0f);
                    }
                    else if (mVideodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected() && mVideodetectionAndAccelerometerViewModel.getVideoAlarmDetected()) {
                        mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "VideoAndAccelerometer", mVideodetectionAndAccelerometerViewModel.getAccelerometerSensorMeanValue());
                    }
                }
                else {
                    mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), false, "VideoAndAccelerometer", 0.0f);
                }
            }
        });

        final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(this);
        cameraProviderFuture.addListener(() -> {
            try {
                mVideodetectionAndAccelerometerViewModel.bindImageAnalysis(cameraProviderFuture.get(), this, this);
            } catch (ExecutionException | InterruptedException e) {
                e.printStackTrace();
            }
        }, ContextCompat.getMainExecutor(this));

        accelerometerManager = (SensorManager) getSystemService(SENSOR_SERVICE);
        if (accelerometerManager.getSensorList(Sensor.TYPE_GYROSCOPE).size() == 0) {
            accelerometerSensor = null;
            Toast.makeText(VideodetectionAndAccelerometerActivity.this, "No accelerometer sensor available", Toast.LENGTH_LONG).show();
        }
        else {
            accelerometerSensor = accelerometerManager.getSensorList(Sensor.TYPE_GYROSCOPE).get(0);
        }
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        StringBuilder sb = new StringBuilder();
        sb.append("x=")
                .append(event.values[0])
                .append("\ny=")
                .append(event.values[1])
                .append("\nz=")
                .append(event.values[2]);
        videodetectionAndAccelerometerDataTV.setText(sb.toString());
        mVideodetectionAndAccelerometerViewModel.addValueToGesamtBE(event.values[0] + event.values[1] + event.values[2]);
        mVideodetectionAndAccelerometerViewModel.meanValueCalculation();
        mVideodetectionAndAccelerometerViewModel.calibrateAccelerometerSensor();
        mVideodetectionAndAccelerometerViewModel.checkAlarmCondition();
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {

    }
    @Override
    protected void onResume() {
        super.onResume();
        if (accelerometerSensor != null) {
            if (accelerometerManager.registerListener(this, accelerometerSensor, SensorManager.SENSOR_DELAY_GAME)) {
                Toast.makeText(VideodetectionAndAccelerometerActivity.this, "We registered to the sensor", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Registration did not work", Toast.LENGTH_LONG).show();
            }
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (accelerometerSensor != null) {
            accelerometerManager.unregisterListener(this, accelerometerSensor);
        }
    }
}