/*************************************************************************/
/*  Godot.java                                                           */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

package org.godotengine.godot;

import static android.content.Context.MODE_PRIVATE;
import static android.content.Context.WINDOW_SERVICE;

import org.godotengine.godot.input.GodotEditText;
import org.godotengine.godot.plugin.GodotPlugin;
import org.godotengine.godot.plugin.GodotPluginRegistry;
import org.godotengine.godot.utils.GodotNetUtils;
import org.godotengine.godot.utils.PermissionsUtil;
import org.godotengine.godot.xr.XRMode;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.pm.ConfigurationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.Point;
import android.graphics.Rect;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Messenger;
import android.os.VibrationEffect;
import android.os.Vibrator;
import android.provider.Settings.Secure;
import android.view.Display;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.Surface;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewTreeObserver;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ProgressBar;
import android.widget.TextView;

import androidx.annotation.CallSuper;
import androidx.annotation.Keep;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;

import com.google.android.vending.expansion.downloader.DownloadProgressInfo;
import com.google.android.vending.expansion.downloader.DownloaderClientMarshaller;
import com.google.android.vending.expansion.downloader.DownloaderServiceMarshaller;
import com.google.android.vending.expansion.downloader.Helpers;
import com.google.android.vending.expansion.downloader.IDownloaderClient;
import com.google.android.vending.expansion.downloader.IDownloaderService;
import com.google.android.vending.expansion.downloader.IStub;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.security.MessageDigest;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;

public class Godot extends Fragment implements SensorEventListener, IDownloaderClient {
	private IStub mDownloaderClientStub;
	private TextView mStatusText;
	private TextView mProgressFraction;
	private TextView mProgressPercent;
	private TextView mAverageSpeed;
	private TextView mTimeRemaining;
	private ProgressBar mPB;
	private ClipboardManager mClipboard;

	private View mDashboard;
	private View mCellMessage;

	private Button mPauseButton;
	private Button mWiFiSettingsButton;

	private XRMode xrMode = XRMode.REGULAR;
	private boolean use_32_bits = false;
	private boolean use_immersive = false;
	private boolean use_debug_opengl = false;
	private boolean mStatePaused;
	private boolean activityResumed;
	private int mState;

	private GodotPluginRegistry pluginRegistry;

	static private Intent mCurrentIntent;

	public void onNewIntent(Intent intent) {
		mCurrentIntent = intent;
	}

	static public Intent getCurrentIntent() {
		return mCurrentIntent;
	}

	private void setState(int newState) {
		if (mState != newState) {
			mState = newState;
			mStatusText.setText(Helpers.getDownloaderStringResourceIDFromState(newState));
		}
	}

	private void setButtonPausedState(boolean paused) {
		mStatePaused = paused;
		int stringResourceID = paused ? R.string.text_button_resume :
										R.string.text_button_pause;
		mPauseButton.setText(stringResourceID);
	}

	private String[] command_line;
	private boolean use_apk_expansion;

	private ViewGroup containerLayout;
	public GodotRenderView mRenderView;
	private boolean godot_initialized = false;

	private SensorManager mSensorManager;
	private Sensor mAccelerometer;
	private Sensor mGravity;
	private Sensor mMagnetometer;
	private Sensor mGyroscope;

	public static GodotIO io;
	public static GodotNetUtils netUtils;

	public interface ResultCallback {
		public void callback(int requestCode, int resultCode, Intent data);
	}
	public ResultCallback result_callback;

	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent data) {
		if (result_callback != null) {
			result_callback.callback(requestCode, resultCode, data);
			result_callback = null;
		}

		for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onMainActivityResult(requestCode, resultCode, data);
		}
	}

	@Override
	public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
		for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onMainRequestPermissionsResult(requestCode, permissions, grantResults);
		}

		for (int i = 0; i < permissions.length; i++) {
			GodotLib.requestPermissionResult(permissions[i], grantResults[i] == PackageManager.PERMISSION_GRANTED);
		}
	};

	/**
	 * Invoked on the render thread when the Godot main loop has started.
	 */
	@CallSuper
	protected void onGodotMainLoopStarted() {
		for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onGodotMainLoopStarted();
		}
	}

	/**
	 * Used by the native code (java_godot_lib_jni.cpp) to complete initialization of the GLSurfaceView view and renderer.
	 */
	@Keep
	private void onVideoInit() {
		final Activity activity = getActivity();
		containerLayout = new FrameLayout(activity);
		containerLayout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

		// GodotEditText layout
		GodotEditText editText = new GodotEditText(activity);
		editText.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
		// ...add to FrameLayout
		containerLayout.addView(editText);

		GodotLib.setup(command_line);

		final String videoDriver = GodotLib.getGlobal("rendering/quality/driver/driver_name");
		if (videoDriver.equals("Vulkan")) {
			mRenderView = new GodotVulkanRenderView(activity, this);
		} else {
			mRenderView = new GodotGLRenderView(activity, this, xrMode, use_32_bits,
					use_debug_opengl);
		}

		View view = mRenderView.getView();
		containerLayout.addView(view, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
		editText.setView(mRenderView);
		io.setEdit(editText);

		view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
			@Override
			public void onGlobalLayout() {
				Point fullSize = new Point();
				activity.getWindowManager().getDefaultDisplay().getSize(fullSize);
				Rect gameSize = new Rect();
				mRenderView.getView().getWindowVisibleDisplayFrame(gameSize);

				final int keyboardHeight = fullSize.y - gameSize.bottom;
				GodotLib.setVirtualKeyboardHeight(keyboardHeight);
			}
		});

		mRenderView.queueOnRenderThread(new Runnable() {
			@Override
			public void run() {
				// Must occur after GodotLib.setup has completed.
				for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
					plugin.onRegisterPluginWithGodotNative();
				}

				setKeepScreenOn("True".equals(GodotLib.getGlobal("display/window/energy_saving/keep_screen_on")));
			}
		});

		// Include the returned non-null views in the Godot view hierarchy.
		for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
			View pluginView = plugin.onMainCreate(activity);
			if (pluginView != null) {
				containerLayout.addView(pluginView);
			}
		}
	}

	public void setKeepScreenOn(final boolean p_enabled) {
		runOnUiThread(new Runnable() {
			@Override
			public void run() {
				if (p_enabled) {
					getActivity().getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
				} else {
					getActivity().getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
				}
			}
		});
	}

	/**
	 * Used by the native code (java_godot_wrapper.h) to vibrate the device.
	 * @param durationMs
	 */
	@SuppressLint("MissingPermission")
	@Keep
	private void vibrate(int durationMs) {
		if (requestPermission("VIBRATE")) {
			Vibrator v = (Vibrator)getContext().getSystemService(Context.VIBRATOR_SERVICE);
			if (v != null) {
				if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
					v.vibrate(VibrationEffect.createOneShot(durationMs, VibrationEffect.DEFAULT_AMPLITUDE));
				} else {
					//deprecated in API 26
					v.vibrate(durationMs);
				}
			}
		}
	}

	public void restart() {
		// HACK:
		//
		// Currently it's very hard to properly deinitialize Godot on Android to restart the game
		// from scratch. Therefore, we need to kill the whole app process and relaunch it.
		//
		// Restarting only the activity, wouldn't be enough unless it did proper cleanup (including
		// releasing and reloading native libs or resetting their state somehow and clearing statics).
		//
		// Using instrumentation is a way of making the whole app process restart, because Android
		// will kill any process of the same package which was already running.
		//
		final Activity activity = getActivity();
		if (activity != null) {
			Bundle args = new Bundle();
			args.putParcelable("intent", mCurrentIntent);
			activity.startInstrumentation(new ComponentName(activity, GodotInstrumentation.class), null, args);
		}
	}

	public void alert(final String message, final String title) {
		final Activity activity = getActivity();
		runOnUiThread(new Runnable() {
			@Override
			public void run() {
				AlertDialog.Builder builder = new AlertDialog.Builder(activity);
				builder.setMessage(message).setTitle(title);
				builder.setPositiveButton(
						"OK",
						new DialogInterface.OnClickListener() {
							public void onClick(DialogInterface dialog, int id) {
								dialog.cancel();
							}
						});
				AlertDialog dialog = builder.create();
				dialog.show();
			}
		});
	}

	public int getGLESVersionCode() {
		ActivityManager am = (ActivityManager)getContext().getSystemService(Context.ACTIVITY_SERVICE);
		ConfigurationInfo deviceInfo = am.getDeviceConfigurationInfo();
		return deviceInfo.reqGlEsVersion;
	}

	@CallSuper
	protected String[] getCommandLine() {
		InputStream is;
		try {
			is = getActivity().getAssets().open("_cl_");
			byte[] len = new byte[4];
			int r = is.read(len);
			if (r < 4) {
				return new String[0];
			}
			int argc = ((int)(len[3] & 0xFF) << 24) | ((int)(len[2] & 0xFF) << 16) | ((int)(len[1] & 0xFF) << 8) | ((int)(len[0] & 0xFF));
			String[] cmdline = new String[argc];

			for (int i = 0; i < argc; i++) {
				r = is.read(len);
				if (r < 4) {
					return new String[0];
				}
				int strlen = ((int)(len[3] & 0xFF) << 24) | ((int)(len[2] & 0xFF) << 16) | ((int)(len[1] & 0xFF) << 8) | ((int)(len[0] & 0xFF));
				if (strlen > 65535) {
					return new String[0];
				}
				byte[] arg = new byte[strlen];
				r = is.read(arg);
				if (r == strlen) {
					cmdline[i] = new String(arg, "UTF-8");
				}
			}
			return cmdline;
		} catch (Exception e) {
			e.printStackTrace();
			return new String[0];
		}
	}

	/**
	 * Used by the native code (java_godot_wrapper.h) to check whether the activity is resumed or paused.
	 */
	@Keep
	private boolean isActivityResumed() {
		return activityResumed;
	}

	/**
	 * Used by the native code (java_godot_wrapper.h) to access the Android surface.
	 */
	@Keep
	private Surface getSurface() {
		return mRenderView.getView().getHolder().getSurface();
	}

	/**
	 * Used by the native code (java_godot_wrapper.h) to access the input fallback mapping.
	 * @return The input fallback mapping for the current XR mode.
	 */
	@Keep
	private String getInputFallbackMapping() {
		return xrMode.inputFallbackMapping;
	}

	String expansion_pack_path;

	private void initializeGodot() {
		if (expansion_pack_path != null) {
			String[] new_cmdline;
			int cll = 0;
			if (command_line != null) {
				new_cmdline = new String[command_line.length + 2];
				cll = command_line.length;
				for (int i = 0; i < command_line.length; i++) {
					new_cmdline[i] = command_line[i];
				}
			} else {
				new_cmdline = new String[2];
			}

			new_cmdline[cll] = "--main-pack";
			new_cmdline[cll + 1] = expansion_pack_path;
			command_line = new_cmdline;
		}

		final Activity activity = getActivity();
		io = new GodotIO(activity);
		io.unique_id = Secure.getString(activity.getContentResolver(), Secure.ANDROID_ID);
		GodotLib.io = io;
		netUtils = new GodotNetUtils(activity);
		mSensorManager = (SensorManager)activity.getSystemService(Context.SENSOR_SERVICE);
		mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
		mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_GAME);
		mGravity = mSensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY);
		mSensorManager.registerListener(this, mGravity, SensorManager.SENSOR_DELAY_GAME);
		mMagnetometer = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
		mSensorManager.registerListener(this, mMagnetometer, SensorManager.SENSOR_DELAY_GAME);
		mGyroscope = mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
		mSensorManager.registerListener(this, mGyroscope, SensorManager.SENSOR_DELAY_GAME);

		GodotLib.initialize(activity, this, activity.getAssets(), use_apk_expansion);

		result_callback = null;

		godot_initialized = true;
	}

	@Override
	public void onServiceConnected(Messenger m) {
		IDownloaderService remoteService = DownloaderServiceMarshaller.CreateProxy(m);
		remoteService.onClientUpdated(mDownloaderClientStub.getMessenger());
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle icicle) {
		final Activity activity = getActivity();
		Window window = activity.getWindow();
		window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
		mClipboard = (ClipboardManager)activity.getSystemService(Context.CLIPBOARD_SERVICE);
		pluginRegistry = GodotPluginRegistry.initializePluginRegistry(this);

		//check for apk expansion API
		boolean md5mismatch = false;
		command_line = getCommandLine();
		String main_pack_md5 = null;
		String main_pack_key = null;

		List<String> new_args = new LinkedList<String>();

		for (int i = 0; i < command_line.length; i++) {
			boolean has_extra = i < command_line.length - 1;
			if (command_line[i].equals(XRMode.REGULAR.cmdLineArg)) {
				xrMode = XRMode.REGULAR;
			} else if (command_line[i].equals(XRMode.OVR.cmdLineArg)) {
				xrMode = XRMode.OVR;
			} else if (command_line[i].equals("--use_depth_32")) {
				use_32_bits = true;
			} else if (command_line[i].equals("--debug_opengl")) {
				use_debug_opengl = true;
			} else if (command_line[i].equals("--use_immersive")) {
				use_immersive = true;
				if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { // check if the application runs on an android 4.4+
					window.getDecorView().setSystemUiVisibility(
							View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
							View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
							View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
							View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | // hide nav bar
							View.SYSTEM_UI_FLAG_FULLSCREEN | // hide status bar
							View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);

					UiChangeListener();
				}
			} else if (command_line[i].equals("--use_apk_expansion")) {
				use_apk_expansion = true;
			} else if (has_extra && command_line[i].equals("--apk_expansion_md5")) {
				main_pack_md5 = command_line[i + 1];
				i++;
			} else if (has_extra && command_line[i].equals("--apk_expansion_key")) {
				main_pack_key = command_line[i + 1];
				SharedPreferences prefs = activity.getSharedPreferences("app_data_keys",
						MODE_PRIVATE);
				Editor editor = prefs.edit();
				editor.putString("store_public_key", main_pack_key);

				editor.apply();
				i++;
			} else if (command_line[i].trim().length() != 0) {
				new_args.add(command_line[i]);
			}
		}

		if (new_args.isEmpty()) {
			command_line = null;
		} else {
			command_line = new_args.toArray(new String[new_args.size()]);
		}
		if (use_apk_expansion && main_pack_md5 != null && main_pack_key != null) {
			//check that environment is ok!
			if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
				//show popup and die
			}

			// Build the full path to the app's expansion files
			try {
				expansion_pack_path = Helpers.getSaveFilePath(getContext());
				expansion_pack_path += "/main." + activity.getPackageManager().getPackageInfo(activity.getPackageName(), 0).versionCode + "." + activity.getPackageName() + ".obb";
			} catch (Exception e) {
				e.printStackTrace();
			}

			File f = new File(expansion_pack_path);

			boolean pack_valid = true;

			if (!f.exists()) {
				pack_valid = false;

			} else if (obbIsCorrupted(expansion_pack_path, main_pack_md5)) {
				pack_valid = false;
				try {
					f.delete();
				} catch (Exception e) {
				}
			}

			if (!pack_valid) {
				Intent notifierIntent = new Intent(activity, activity.getClass());
				notifierIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
										Intent.FLAG_ACTIVITY_CLEAR_TOP);

				PendingIntent pendingIntent = PendingIntent.getActivity(activity, 0,
						notifierIntent, PendingIntent.FLAG_UPDATE_CURRENT);

				int startResult;
				try {
					startResult = DownloaderClientMarshaller.startDownloadServiceIfRequired(
							getContext(),
							pendingIntent,
							GodotDownloaderService.class);

					if (startResult != DownloaderClientMarshaller.NO_DOWNLOAD_REQUIRED) {
						// This is where you do set up to display the download
						// progress (next step)
						mDownloaderClientStub = DownloaderClientMarshaller.CreateStub(this,
								GodotDownloaderService.class);

						View downloadingExpansionView =
								inflater.inflate(R.layout.downloading_expansion, container, false);
						mPB = (ProgressBar)downloadingExpansionView.findViewById(R.id.progressBar);
						mStatusText = (TextView)downloadingExpansionView.findViewById(R.id.statusText);
						mProgressFraction = (TextView)downloadingExpansionView.findViewById(R.id.progressAsFraction);
						mProgressPercent = (TextView)downloadingExpansionView.findViewById(R.id.progressAsPercentage);
						mAverageSpeed = (TextView)downloadingExpansionView.findViewById(R.id.progressAverageSpeed);
						mTimeRemaining = (TextView)downloadingExpansionView.findViewById(R.id.progressTimeRemaining);
						mDashboard = downloadingExpansionView.findViewById(R.id.downloaderDashboard);
						mCellMessage = downloadingExpansionView.findViewById(R.id.approveCellular);
						mPauseButton = (Button)downloadingExpansionView.findViewById(R.id.pauseButton);
						mWiFiSettingsButton = (Button)downloadingExpansionView.findViewById(R.id.wifiSettingsButton);

						return downloadingExpansionView;
					}
				} catch (NameNotFoundException e) {
					// TODO Auto-generated catch block
				}
			}
		}

		mCurrentIntent = activity.getIntent();

		initializeGodot();
		return containerLayout;
	}

	@Override
	public void onDestroy() {
		for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onMainDestroy();
		}

		GodotLib.ondestroy();

		super.onDestroy();

		// TODO: This is a temp solution. The proper fix will involve tracking down and properly shutting down each
		// native Godot components that is started in Godot#onVideoInit.
		forceQuit();
	}

	@Override
	public void onPause() {
		super.onPause();
		activityResumed = false;

		if (!godot_initialized) {
			if (null != mDownloaderClientStub) {
				mDownloaderClientStub.disconnect(getActivity());
			}
			return;
		}
		mRenderView.onActivityPaused();

		mSensorManager.unregisterListener(this);

		for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onMainPause();
		}
	}

	public String getClipboard() {
		String copiedText = "";

		if (mClipboard.getPrimaryClip() != null) {
			ClipData.Item item = mClipboard.getPrimaryClip().getItemAt(0);
			copiedText = item.getText().toString();
		}

		return copiedText;
	}

	public void setClipboard(String p_text) {
		ClipData clip = ClipData.newPlainText("myLabel", p_text);
		mClipboard.setPrimaryClip(clip);
	}

	@Override
	public void onResume() {
		super.onResume();
		activityResumed = true;
		if (!godot_initialized) {
			if (null != mDownloaderClientStub) {
				mDownloaderClientStub.connect(getActivity());
			}
			return;
		}

		mRenderView.onActivityResumed();

		mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_GAME);
		mSensorManager.registerListener(this, mGravity, SensorManager.SENSOR_DELAY_GAME);
		mSensorManager.registerListener(this, mMagnetometer, SensorManager.SENSOR_DELAY_GAME);
		mSensorManager.registerListener(this, mGyroscope, SensorManager.SENSOR_DELAY_GAME);

		if (use_immersive && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { // check if the application runs on an android 4.4+
			Window window = getActivity().getWindow();
			window.getDecorView().setSystemUiVisibility(
					View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
					View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
					View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
					View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | // hide nav bar
					View.SYSTEM_UI_FLAG_FULLSCREEN | // hide status bar
					View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
		}

		for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
			plugin.onMainResume();
		}
	}

	public void UiChangeListener() {
		final View decorView = getActivity().getWindow().getDecorView();
		decorView.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
			@Override
			public void onSystemUiVisibilityChange(int visibility) {
				if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
					if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
						decorView.setSystemUiVisibility(
								View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
								View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
								View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
								View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
								View.SYSTEM_UI_FLAG_FULLSCREEN |
								View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
					}
				}
			}
		});
	}

	@Override
	public void onSensorChanged(SensorEvent event) {
		Display display =
				((WindowManager)getActivity().getSystemService(WINDOW_SERVICE)).getDefaultDisplay();
		int displayRotation = display.getRotation();

		float[] adjustedValues = new float[3];
		final int axisSwap[][] = {
			{ 1, -1, 0, 1 }, // ROTATION_0
			{ -1, -1, 1, 0 }, // ROTATION_90
			{ -1, 1, 0, 1 }, // ROTATION_180
			{ 1, 1, 1, 0 }
		}; // ROTATION_270

		final int[] as = axisSwap[displayRotation];
		adjustedValues[0] = (float)as[0] * event.values[as[2]];
		adjustedValues[1] = (float)as[1] * event.values[as[3]];
		adjustedValues[2] = event.values[2];

		final float x = adjustedValues[0];
		final float y = adjustedValues[1];
		final float z = adjustedValues[2];

		final int typeOfSensor = event.sensor.getType();
		if (mRenderView != null) {
			mRenderView.queueOnRenderThread(new Runnable() {
				@Override
				public void run() {
					if (typeOfSensor == Sensor.TYPE_ACCELEROMETER) {
						GodotLib.accelerometer(-x, y, -z);
					}
					if (typeOfSensor == Sensor.TYPE_GRAVITY) {
						GodotLib.gravity(-x, y, -z);
					}
					if (typeOfSensor == Sensor.TYPE_MAGNETIC_FIELD) {
						GodotLib.magnetometer(-x, y, -z);
					}
					if (typeOfSensor == Sensor.TYPE_GYROSCOPE) {
						GodotLib.gyroscope(x, -y, z);
					}
				}
			});
		}
	}

	@Override
	public final void onAccuracyChanged(Sensor sensor, int accuracy) {
		// Do something here if sensor accuracy changes.
	}

	/*
	@Override public boolean dispatchKeyEvent(KeyEvent event) {

		if (event.getKeyCode()==KeyEvent.KEYCODE_BACK) {

			System.out.printf("** BACK REQUEST!\n");

			GodotLib.quit();
			return true;
		}
		System.out.printf("** OTHER KEY!\n");

		return false;
	}
	*/

	public void onBackPressed() {
		boolean shouldQuit = true;

		for (GodotPlugin plugin : pluginRegistry.getAllPlugins()) {
			if (plugin.onMainBackPressed()) {
				shouldQuit = false;
			}
		}

		if (shouldQuit && mRenderView != null) {
			mRenderView.queueOnRenderThread(new Runnable() {
				@Override
				public void run() {
					GodotLib.back();
				}
			});
		}
	}

	/**
	 * Queue a runnable to be run on the render thread.
	 * <p>
	 * This must be called after the render thread has started.
	 */
	public final void runOnRenderThread(@NonNull Runnable action) {
		if (mRenderView != null) {
			mRenderView.queueOnRenderThread(action);
		}
	}

	public final void runOnUiThread(@NonNull Runnable action) {
		if (getActivity() != null) {
			getActivity().runOnUiThread(action);
		}
	}

	private void forceQuit() {
		System.exit(0);
	}

	private boolean obbIsCorrupted(String f, String main_pack_md5) {
		try {
			InputStream fis = new FileInputStream(f);

			// Create MD5 Hash
			byte[] buffer = new byte[16384];

			MessageDigest complete = MessageDigest.getInstance("MD5");
			int numRead;
			do {
				numRead = fis.read(buffer);
				if (numRead > 0) {
					complete.update(buffer, 0, numRead);
				}
			} while (numRead != -1);

			fis.close();
			byte[] messageDigest = complete.digest();

			// Create Hex String
			StringBuffer hexString = new StringBuffer();
			for (int i = 0; i < messageDigest.length; i++) {
				String s = Integer.toHexString(0xFF & messageDigest[i]);

				if (s.length() == 1) {
					s = "0" + s;
				}
				hexString.append(s);
			}
			String md5str = hexString.toString();

			if (!md5str.equals(main_pack_md5)) {
				return true;
			}
			return false;
		} catch (Exception e) {
			e.printStackTrace();
			return true;
		}
	}

	public boolean gotTouchEvent(final MotionEvent event) {
		final int evcount = event.getPointerCount();
		if (evcount == 0)
			return true;

		if (mRenderView != null) {
			final int[] arr = new int[event.getPointerCount() * 3];

			for (int i = 0; i < event.getPointerCount(); i++) {
				arr[i * 3 + 0] = (int)event.getPointerId(i);
				arr[i * 3 + 1] = (int)event.getX(i);
				arr[i * 3 + 2] = (int)event.getY(i);
			}
			final int pointer_idx = event.getPointerId(event.getActionIndex());

			//System.out.printf("gaction: %d\n",event.getAction());
			final int action = event.getAction() & MotionEvent.ACTION_MASK;
			mRenderView.queueOnRenderThread(new Runnable() {
				@Override
				public void run() {
					switch (action) {
						case MotionEvent.ACTION_DOWN: {
							GodotLib.touch(0, 0, evcount, arr);
							//System.out.printf("action down at: %f,%f\n", event.getX(),event.getY());
						} break;
						case MotionEvent.ACTION_MOVE: {
							GodotLib.touch(1, 0, evcount, arr);
							/*
							for(int i=0;i<event.getPointerCount();i++) {
								System.out.printf("%d - moved to: %f,%f\n",i, event.getX(i),event.getY(i));
							}
							*/
						} break;
						case MotionEvent.ACTION_POINTER_UP: {
							GodotLib.touch(4, pointer_idx, evcount, arr);
							//System.out.printf("%d - s.up at: %f,%f\n",pointer_idx, event.getX(pointer_idx),event.getY(pointer_idx));
						} break;
						case MotionEvent.ACTION_POINTER_DOWN: {
							GodotLib.touch(3, pointer_idx, evcount, arr);
							//System.out.printf("%d - s.down at: %f,%f\n",pointer_idx, event.getX(pointer_idx),event.getY(pointer_idx));
						} break;
						case MotionEvent.ACTION_CANCEL:
						case MotionEvent.ACTION_UP: {
							GodotLib.touch(2, 0, evcount, arr);
							/*
							for(int i=0;i<event.getPointerCount();i++) {
								System.out.printf("%d - up! %f,%f\n",i, event.getX(i),event.getY(i));
							}
							*/
						} break;
					}
				}
			});
		}
		return true;
	}

	public boolean onKeyMultiple(final int inKeyCode, int repeatCount, KeyEvent event) {
		String s = event.getCharacters();
		if (s == null || s.length() == 0)
			return false;

		final char[] cc = s.toCharArray();
		int cnt = 0;
		for (int i = cc.length; --i >= 0; cnt += cc[i] != 0 ? 1 : 0)
			;
		if (cnt == 0)
			return false;
		mRenderView.queueOnRenderThread(new Runnable() {
			// This method will be called on the rendering thread:
			public void run() {
				for (int i = 0, n = cc.length; i < n; i++) {
					int keyCode;
					if ((keyCode = cc[i]) != 0) {
						// Simulate key down and up...
						GodotLib.key(0, 0, keyCode, true);
						GodotLib.key(0, 0, keyCode, false);
					}
				}
			}
		});
		return true;
	}

	public boolean requestPermission(String p_name) {
		return PermissionsUtil.requestPermission(p_name, getActivity());
	}

	public boolean requestPermissions() {
		return PermissionsUtil.requestManifestPermissions(getActivity());
	}

	public String[] getGrantedPermissions() {
		return PermissionsUtil.getGrantedPermissions(getActivity());
	}

	/**
	 * The download state should trigger changes in the UI --- it may be useful
	 * to show the state as being indeterminate at times. This sample can be
	 * considered a guideline.
	 */
	@Override
	public void onDownloadStateChanged(int newState) {
		setState(newState);
		boolean showDashboard = true;
		boolean showCellMessage = false;
		boolean paused;
		boolean indeterminate;
		switch (newState) {
			case IDownloaderClient.STATE_IDLE:
				// STATE_IDLE means the service is listening, so it's
				// safe to start making remote service calls.
				paused = false;
				indeterminate = true;
				break;
			case IDownloaderClient.STATE_CONNECTING:
			case IDownloaderClient.STATE_FETCHING_URL:
				showDashboard = true;
				paused = false;
				indeterminate = true;
				break;
			case IDownloaderClient.STATE_DOWNLOADING:
				paused = false;
				showDashboard = true;
				indeterminate = false;
				break;

			case IDownloaderClient.STATE_FAILED_CANCELED:
			case IDownloaderClient.STATE_FAILED:
			case IDownloaderClient.STATE_FAILED_FETCHING_URL:
			case IDownloaderClient.STATE_FAILED_UNLICENSED:
				paused = true;
				showDashboard = false;
				indeterminate = false;
				break;
			case IDownloaderClient.STATE_PAUSED_NEED_CELLULAR_PERMISSION:
			case IDownloaderClient.STATE_PAUSED_WIFI_DISABLED_NEED_CELLULAR_PERMISSION:
				showDashboard = false;
				paused = true;
				indeterminate = false;
				showCellMessage = true;
				break;

			case IDownloaderClient.STATE_PAUSED_BY_REQUEST:
				paused = true;
				indeterminate = false;
				break;
			case IDownloaderClient.STATE_PAUSED_ROAMING:
			case IDownloaderClient.STATE_PAUSED_SDCARD_UNAVAILABLE:
				paused = true;
				indeterminate = false;
				break;
			case IDownloaderClient.STATE_COMPLETED:
				showDashboard = false;
				paused = false;
				indeterminate = false;
				initializeGodot();
				return;
			default:
				paused = true;
				indeterminate = true;
				showDashboard = true;
		}
		int newDashboardVisibility = showDashboard ? View.VISIBLE : View.GONE;
		if (mDashboard.getVisibility() != newDashboardVisibility) {
			mDashboard.setVisibility(newDashboardVisibility);
		}
		int cellMessageVisibility = showCellMessage ? View.VISIBLE : View.GONE;
		if (mCellMessage.getVisibility() != cellMessageVisibility) {
			mCellMessage.setVisibility(cellMessageVisibility);
		}

		mPB.setIndeterminate(indeterminate);
		setButtonPausedState(paused);
	}

	@Override
	public void onDownloadProgress(DownloadProgressInfo progress) {
		mAverageSpeed.setText(getString(R.string.kilobytes_per_second,
				Helpers.getSpeedString(progress.mCurrentSpeed)));
		mTimeRemaining.setText(getString(R.string.time_remaining,
				Helpers.getTimeRemaining(progress.mTimeRemaining)));

		mPB.setMax((int)(progress.mOverallTotal >> 8));
		mPB.setProgress((int)(progress.mOverallProgress >> 8));
		mProgressPercent.setText(String.format(Locale.ENGLISH, "%d %%", progress.mOverallProgress * 100 / progress.mOverallTotal));
		mProgressFraction.setText(Helpers.getDownloadProgressString(progress.mOverallProgress,
				progress.mOverallTotal));
	}
	public void initInputDevices() {
		mRenderView.initInputDevices();
	}
}
