/*
 * This is the source code of Telegram for Android v. 3.x.x.
 * It is licensed under GNU GPL v. 2 or later.
 * You should have received a copy of the license in this archive (see LICENSE).
 *
 * Copyright Nikolai Kudashov, 2013-2016.
 */

package org.telegram.messenger;

import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentUris;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.Typeface;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.style.ForegroundColorSpan;
import android.util.DisplayMetrics;
import android.util.StateSet;
import android.view.Display;
import android.view.Surface;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.webkit.MimeTypeMap;
import android.widget.AbsListView;
import android.widget.EdgeEffect;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;

import net.hockeyapp.android.CrashManager;
import net.hockeyapp.android.CrashManagerListener;
import net.hockeyapp.android.UpdateManager;

import org.telegram.tgnet.ConnectionsManager;
import org.telegram.tgnet.TLRPC;
import org.telegram.ui.ActionBar.BaseFragment;
import org.telegram.ui.Components.ForegroundDetector;
import org.telegram.ui.Components.NumberPicker;
import org.telegram.ui.Components.TypefaceSpan;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Hashtable;
import java.util.Locale;
import java.util.regex.Pattern;

public class AndroidUtilities {

    private static final Hashtable<String, Typeface> typefaceCache = new Hashtable<>();
    private static int prevOrientation = -10;
    private static boolean waitingForSms = false;
    private static boolean waitingForCall = false;
    private static final Object smsLock = new Object();
    private static final Object callLock = new Object();

    public static int statusBarHeight = 0;
    public static float density = 1;
    public static Point displaySize = new Point();
    public static Integer photoSize = null;
    public static DisplayMetrics displayMetrics = new DisplayMetrics();
    public static int leftBaseline;
    public static boolean usingHardwareInput;
    private static Boolean isTablet = null;
    private static int adjustOwnerClassGuid = 0;

    private static Paint roundPaint;
    private static RectF bitmapRect;

    public static Pattern WEB_URL = null;
    static {
        try {
            final String GOOD_IRI_CHAR = "a-zA-Z0-9\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF";
            final Pattern IP_ADDRESS = Pattern.compile(
                    "((25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9])\\.(25[0-5]|2[0-4]"
                            + "[0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1]"
                            + "[0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}"
                            + "|[1-9][0-9]|[0-9]))");
            final String IRI = "[" + GOOD_IRI_CHAR + "]([" + GOOD_IRI_CHAR + "\\-]{0,61}[" + GOOD_IRI_CHAR + "]){0,1}";
            final String GOOD_GTLD_CHAR = "a-zA-Z\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF";
            final String GTLD = "[" + GOOD_GTLD_CHAR + "]{2,63}";
            final String HOST_NAME = "(" + IRI + "\\.)+" + GTLD;
            final Pattern DOMAIN_NAME = Pattern.compile("(" + HOST_NAME + "|" + IP_ADDRESS + ")");
            WEB_URL = Pattern.compile(
                    "((?:(http|https|Http|Https):\\/\\/(?:(?:[a-zA-Z0-9\\$\\-\\_\\.\\+\\!\\*\\'\\(\\)"
                            + "\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,64}(?:\\:(?:[a-zA-Z0-9\\$\\-\\_"
                            + "\\.\\+\\!\\*\\'\\(\\)\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,25})?\\@)?)?"
                            + "(?:" + DOMAIN_NAME + ")"
                            + "(?:\\:\\d{1,5})?)" // plus option port number
                            + "(\\/(?:(?:[" + GOOD_IRI_CHAR + "\\;\\/\\?\\:\\@\\&\\=\\#\\~"  // plus option query params
                            + "\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])|(?:\\%[a-fA-F0-9]{2}))*)?"
                            + "(?:\\b|$)");
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    static {
        density = ApplicationLoader.applicationContext.getResources().getDisplayMetrics().density;
        leftBaseline = isTablet() ? 80 : 72;
        checkDisplaySize();
    }

    public static int[] calcDrawableColor(Drawable drawable) {
        int bitmapColor = 0xff000000;
        int result[] = new int[2];
        try {
            if (drawable instanceof BitmapDrawable) {
                Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
                if (bitmap != null) {
                    Bitmap b = Bitmaps.createScaledBitmap(bitmap, 1, 1, true);
                    if (b != null) {
                        bitmapColor = b.getPixel(0, 0);
                        b.recycle();
                    }
                }
            } else if (drawable instanceof ColorDrawable) {
                bitmapColor = ((ColorDrawable) drawable).getColor();
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }

        double[] hsv = rgbToHsv((bitmapColor >> 16) & 0xff, (bitmapColor >> 8) & 0xff, bitmapColor & 0xff);
        hsv[1] = Math.min(1.0, hsv[1] + 0.05 + 0.1 * (1.0 - hsv[1]));
        hsv[2] = Math.max(0, hsv[2] * 0.65);
        int rgb[] = hsvToRgb(hsv[0], hsv[1], hsv[2]);
        result[0] = Color.argb(0x66, rgb[0], rgb[1], rgb[2]);
        result[1] = Color.argb(0x88, rgb[0], rgb[1], rgb[2]);
        return result;
    }

    private static double[] rgbToHsv(int r, int g, int b) {
        double rf = r / 255.0;
        double gf = g / 255.0;
        double bf = b / 255.0;
        double max = (rf > gf && rf > bf) ? rf : (gf > bf) ? gf : bf;
        double min = (rf < gf && rf < bf) ? rf : (gf < bf) ? gf : bf;
        double h, s;
        double d = max - min;
        s = max == 0 ? 0 : d / max;
        if (max == min) {
            h = 0;
        } else {
            if (rf > gf && rf > bf) {
                h = (gf - bf) / d + (gf < bf ? 6 : 0);
            } else if (gf > bf) {
                h = (bf - rf) / d + 2;
            } else {
                h = (rf - gf) / d + 4;
            }
            h /= 6;
        }
        return new double[]{h, s, max};
    }

    private static int[] hsvToRgb(double h, double s, double v) {
        double r = 0, g = 0, b = 0;
        double i = (int) Math.floor(h * 6);
        double f = h * 6 - i;
        double p = v * (1 - s);
        double q = v * (1 - f * s);
        double t = v * (1 - (1 - f) * s);
        switch ((int) i % 6) {
            case 0:
                r = v;
                g = t;
                b = p;
                break;
            case 1:
                r = q;
                g = v;
                b = p;
                break;
            case 2:
                r = p;
                g = v;
                b = t;
                break;
            case 3:
                r = p;
                g = q;
                b = v;
                break;
            case 4:
                r = t;
                g = p;
                b = v;
                break;
            case 5:
                r = v;
                g = p;
                b = q;
                break;
        }
        return new int[]{(int) (r * 255), (int) (g * 255), (int) (b * 255)};
    }

    public static void requestAdjustResize(Activity activity, int classGuid) {
        if (activity == null || isTablet()) {
            return;
        }
        activity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
        adjustOwnerClassGuid = classGuid;
    }

    public static void removeAdjustResize(Activity activity, int classGuid) {
        if (activity == null || isTablet()) {
            return;
        }
        if (adjustOwnerClassGuid == classGuid) {
            activity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
        }
    }

    public static boolean isGoogleMapsInstalled(final BaseFragment fragment) {
        try {
            ApplicationLoader.applicationContext.getPackageManager().getApplicationInfo("com.google.android.apps.maps", 0);
            return true;
        } catch (PackageManager.NameNotFoundException e) {
            if (fragment.getParentActivity() == null) {
                return false;
            }
            AlertDialog.Builder builder = new AlertDialog.Builder(fragment.getParentActivity());
            builder.setMessage("Install Google Maps?");
            builder.setCancelable(true);
            builder.setPositiveButton(LocaleController.getString("OK", R.string.OK), new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    try {
                        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=com.google.android.apps.maps"));
                        fragment.getParentActivity().startActivityForResult(intent, 500);
                    } catch (Exception e) {
                        FileLog.e("tmessages", e);
                    }
                }
            });
            builder.setNegativeButton(LocaleController.getString("Cancel", R.string.Cancel), null);
            fragment.showDialog(builder.create());
            return false;
        }
    }

    public static boolean isInternalUri(Uri uri) {
        String pathString = uri.getPath();
        if (pathString == null) {
            return false;
        }
        while (true) {
            String newPath = Utilities.readlink(pathString);
            if (newPath == null || newPath.equals(pathString)) {
                break;
            }
            pathString = newPath;
        }
        return pathString != null && pathString.toLowerCase().contains("/data/data/" + ApplicationLoader.applicationContext.getPackageName() + "/files");
    }

    public static void lockOrientation(Activity activity) {
        if (activity == null || prevOrientation != -10) {
            return;
        }
        try {
            prevOrientation = activity.getRequestedOrientation();
            WindowManager manager = (WindowManager)activity.getSystemService(Activity.WINDOW_SERVICE);
            if (manager != null && manager.getDefaultDisplay() != null) {
                int rotation = manager.getDefaultDisplay().getRotation();
                int orientation = activity.getResources().getConfiguration().orientation;

                if (rotation == Surface.ROTATION_270) {
                    if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                    } else {
                        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
                    }
                } else if (rotation == Surface.ROTATION_90) {
                    if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
                    } else {
                        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                    }
                } else if (rotation == Surface.ROTATION_0) {
                    if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
                        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                    } else {
                        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                    }
                } else {
                    if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
                        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
                    } else {
                        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
                    }
                }
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static void unlockOrientation(Activity activity) {
        if (activity == null) {
            return;
        }
        try {
            if (prevOrientation != -10) {
                activity.setRequestedOrientation(prevOrientation);
                prevOrientation = -10;
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static Typeface getTypeface(String assetPath) {
        synchronized (typefaceCache) {
            if (!typefaceCache.containsKey(assetPath)) {
                try {
                    Typeface t = Typeface.createFromAsset(ApplicationLoader.applicationContext.getAssets(), assetPath);
                    typefaceCache.put(assetPath, t);
                } catch (Exception e) {
                    FileLog.e("Typefaces", "Could not get typeface '" + assetPath + "' because " + e.getMessage());
                    return null;
                }
            }
            return typefaceCache.get(assetPath);
        }
    }

    public static boolean isWaitingForSms() {
        boolean value;
        synchronized (smsLock) {
            value = waitingForSms;
        }
        return value;
    }

    public static void setWaitingForSms(boolean value) {
        synchronized (smsLock) {
            waitingForSms = value;
        }
    }

    public static boolean isWaitingForCall() {
        boolean value;
        synchronized (callLock) {
            value = waitingForCall;
        }
        return value;
    }

    public static void setWaitingForCall(boolean value) {
        synchronized (callLock) {
            waitingForCall = value;
        }
    }

    public static void showKeyboard(View view) {
        if (view == null) {
            return;
        }
        try {
            InputMethodManager inputManager = (InputMethodManager)view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
            inputManager.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static boolean isKeyboardShowed(View view) {
        if (view == null) {
            return false;
        }
        try {
            InputMethodManager inputManager = (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
            return inputManager.isActive(view);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return false;
    }

    public static void hideKeyboard(View view) {
        if (view == null) {
            return;
        }
        try {
            InputMethodManager imm = (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
            if (!imm.isActive()) {
                return;
            }
            imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static File getCacheDir() {
        String state = null;
        try {
            state = Environment.getExternalStorageState();
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        if (state == null || state.startsWith(Environment.MEDIA_MOUNTED)) {
            try {
                File file = ApplicationLoader.applicationContext.getExternalCacheDir();
                if (file != null) {
                    return file;
                }
            } catch (Exception e) {
                FileLog.e("tmessages", e);
            }
        }
        try {
            File file = ApplicationLoader.applicationContext.getCacheDir();
            if (file != null) {
                return file;
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return new File("");
    }

    public static int dp(float value) {
        if (value == 0) {
            return 0;
        }
        return (int) Math.ceil(density * value);
    }

    public static int compare(int lhs, int rhs) {
        if (lhs == rhs) {
            return 0;
        } else if (lhs > rhs) {
            return 1;
        }
        return -1;
    }

    public static float dpf2(float value) {
        if (value == 0) {
            return 0;
        }
        return density * value;
    }

    public static void checkDisplaySize() {
        try {
            Configuration configuration = ApplicationLoader.applicationContext.getResources().getConfiguration();
            usingHardwareInput = configuration.keyboard != Configuration.KEYBOARD_NOKEYS && configuration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_NO;
            WindowManager manager = (WindowManager) ApplicationLoader.applicationContext.getSystemService(Context.WINDOW_SERVICE);
            if (manager != null) {
                Display display = manager.getDefaultDisplay();
                if (display != null) {
                    display.getMetrics(displayMetrics);
                    display.getSize(displaySize);
                    FileLog.e("tmessages", "display size = " + displaySize.x + " " + displaySize.y + " " + displayMetrics.xdpi + "x" + displayMetrics.ydpi);
                }
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static float getPixelsInCM(float cm, boolean isX) {
        return (cm / 2.54f) * (isX ? displayMetrics.xdpi : displayMetrics.ydpi);
    }

    public static long makeBroadcastId(int id) {
        return 0x0000000100000000L | ((long)id & 0x00000000FFFFFFFFL);
    }

    public static int getMyLayerVersion(int layer) {
        return layer & 0xffff;
    }

    public static int getPeerLayerVersion(int layer) {
        return (layer >> 16) & 0xffff;
    }

    public static int setMyLayerVersion(int layer, int version) {
        return layer & 0xffff0000 | version;
    }

    public static int setPeerLayerVersion(int layer, int version) {
        return layer & 0x0000ffff | (version << 16);
    }

    public static void runOnUIThread(Runnable runnable) {
        runOnUIThread(runnable, 0);
    }

    public static void runOnUIThread(Runnable runnable, long delay) {
        if (delay == 0) {
            ApplicationLoader.applicationHandler.post(runnable);
        } else {
            ApplicationLoader.applicationHandler.postDelayed(runnable, delay);
        }
    }

    public static void cancelRunOnUIThread(Runnable runnable) {
        ApplicationLoader.applicationHandler.removeCallbacks(runnable);
    }

    public static boolean isTablet() {
        if (isTablet == null) {
            isTablet = ApplicationLoader.applicationContext.getResources().getBoolean(R.bool.isTablet);
        }
        return isTablet;
    }

    public static boolean isSmallTablet() {
        float minSide = Math.min(displaySize.x, displaySize.y) / density;
        return minSide <= 700;
    }

    public static int getMinTabletSide() {
        if (!isSmallTablet()) {
            int smallSide = Math.min(displaySize.x, displaySize.y);
            int leftSide = smallSide * 35 / 100;
            if (leftSide < dp(320)) {
                leftSide = dp(320);
            }
            return smallSide - leftSide;
        } else {
            int smallSide = Math.min(displaySize.x, displaySize.y);
            int maxSide = Math.max(displaySize.x, displaySize.y);
            int leftSide = maxSide * 35 / 100;
            if (leftSide < dp(320)) {
                leftSide = dp(320);
            }
            return Math.min(smallSide, maxSide - leftSide);
        }
    }

    public static int getPhotoSize() {
        if (photoSize == null) {
            if (Build.VERSION.SDK_INT >= 16) {
                photoSize = 1280;
            } else {
                photoSize = 800;
            }
        }
        return photoSize;
    }

    public static String formatTTLString(int ttl) {
        if (ttl < 60) {
            return LocaleController.formatPluralString("Seconds", ttl);
        } else if (ttl < 60 * 60) {
            return LocaleController.formatPluralString("Minutes", ttl / 60);
        } else if (ttl < 60 * 60 * 24) {
            return LocaleController.formatPluralString("Hours", ttl / 60 / 60);
        } else if (ttl < 60 * 60 * 24 * 7) {
            return LocaleController.formatPluralString("Days", ttl / 60 / 60 / 24);
        } else {
            int days = ttl / 60 / 60 / 24;
            if (ttl % 7 == 0) {
                return LocaleController.formatPluralString("Weeks", days / 7);
            } else {
                return String.format("%s %s", LocaleController.formatPluralString("Weeks", days / 7), LocaleController.formatPluralString("Days", days % 7));
            }
        }
    }

    public static AlertDialog.Builder buildTTLAlert(final Context context, final TLRPC.EncryptedChat encryptedChat) {
        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        builder.setTitle(LocaleController.getString("MessageLifetime", R.string.MessageLifetime));
        final NumberPicker numberPicker = new NumberPicker(context);
        numberPicker.setMinValue(0);
        numberPicker.setMaxValue(20);
        if (encryptedChat.ttl > 0 && encryptedChat.ttl < 16) {
            numberPicker.setValue(encryptedChat.ttl);
        } else if (encryptedChat.ttl == 30) {
            numberPicker.setValue(16);
        } else if (encryptedChat.ttl == 60) {
            numberPicker.setValue(17);
        } else if (encryptedChat.ttl == 60 * 60) {
            numberPicker.setValue(18);
        } else if (encryptedChat.ttl == 60 * 60 * 24) {
            numberPicker.setValue(19);
        } else if (encryptedChat.ttl == 60 * 60 * 24 * 7) {
            numberPicker.setValue(20);
        } else if (encryptedChat.ttl == 0) {
            numberPicker.setValue(0);
        }
        numberPicker.setFormatter(new NumberPicker.Formatter() {
            @Override
            public String format(int value) {
                if (value == 0) {
                    return LocaleController.getString("ShortMessageLifetimeForever", R.string.ShortMessageLifetimeForever);
                } else if (value >= 1 && value < 16) {
                    return AndroidUtilities.formatTTLString(value);
                } else if (value == 16) {
                    return AndroidUtilities.formatTTLString(30);
                } else if (value == 17) {
                    return AndroidUtilities.formatTTLString(60);
                } else if (value == 18) {
                    return AndroidUtilities.formatTTLString(60 * 60);
                } else if (value == 19) {
                    return AndroidUtilities.formatTTLString(60 * 60 * 24);
                } else if (value == 20) {
                    return AndroidUtilities.formatTTLString(60 * 60 * 24 * 7);
                }
                return "";
            }
        });
        builder.setView(numberPicker);
        builder.setNegativeButton(LocaleController.getString("Done", R.string.Done), new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                int oldValue = encryptedChat.ttl;
                which = numberPicker.getValue();
                if (which >= 0 && which < 16) {
                    encryptedChat.ttl = which;
                } else if (which == 16) {
                    encryptedChat.ttl = 30;
                } else if (which == 17) {
                    encryptedChat.ttl = 60;
                } else if (which == 18) {
                    encryptedChat.ttl = 60 * 60;
                } else if (which == 19) {
                    encryptedChat.ttl = 60 * 60 * 24;
                } else if (which == 20) {
                    encryptedChat.ttl = 60 * 60 * 24 * 7;
                }
                if (oldValue != encryptedChat.ttl) {
                    SecretChatHelper.getInstance().sendTTLMessage(encryptedChat, null);
                    MessagesStorage.getInstance().updateEncryptedChatTTL(encryptedChat);
                }
            }
        });
        return builder;
    }

    public static void clearCursorDrawable(EditText editText) {
        if (editText == null) {
            return;
        }
        try {
            Field mCursorDrawableRes = TextView.class.getDeclaredField("mCursorDrawableRes");
            mCursorDrawableRes.setAccessible(true);
            mCursorDrawableRes.setInt(editText, 0);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static void setProgressBarAnimationDuration(ProgressBar progressBar, int duration) {
        if (progressBar == null) {
            return;
        }
        try {
            Field mCursorDrawableRes = ProgressBar.class.getDeclaredField("mDuration");
            mCursorDrawableRes.setAccessible(true);
            mCursorDrawableRes.setInt(progressBar, duration);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    private static Intent createShortcutIntent(long did, boolean forDelete) {
        Intent shortcutIntent = new Intent(ApplicationLoader.applicationContext, OpenChatReceiver.class);

        int lower_id = (int) did;
        int high_id = (int) (did >> 32);

        TLRPC.User user = null;
        TLRPC.Chat chat = null;
        if (lower_id == 0) {
            shortcutIntent.putExtra("encId", high_id);
            TLRPC.EncryptedChat encryptedChat = MessagesController.getInstance().getEncryptedChat(high_id);
            if (encryptedChat == null) {
                return null;
            }
            user = MessagesController.getInstance().getUser(encryptedChat.user_id);
        } else if (lower_id > 0) {
            shortcutIntent.putExtra("userId", lower_id);
            user = MessagesController.getInstance().getUser(lower_id);
        } else if (lower_id < 0) {
            chat = MessagesController.getInstance().getChat(-lower_id);
            shortcutIntent.putExtra("chatId", -lower_id);
        } else {
            return null;
        }
        if (user == null && chat == null) {
            return null;
        }

        String name;
        TLRPC.FileLocation photo = null;

        if (user != null) {
            name = ContactsController.formatName(user.first_name, user.last_name);
            if (user.photo != null) {
                photo = user.photo.photo_small;
            }
        } else {
            name = chat.title;
            if (chat.photo != null) {
                photo = chat.photo.photo_small;
            }
        }

        shortcutIntent.setAction("com.tmessages.openchat" + did);
        shortcutIntent.addFlags(0x4000000);

        Intent addIntent = new Intent();
        addIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
        addIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, name);
        addIntent.putExtra("duplicate", false);
        if (!forDelete) {
            Bitmap bitmap = null;
            if (photo != null) {
                try {
                    File path = FileLoader.getPathToAttach(photo, true);
                    bitmap = BitmapFactory.decodeFile(path.toString());
                    if (bitmap != null) {
                        int size = AndroidUtilities.dp(58);
                        Bitmap result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
                        result.eraseColor(Color.TRANSPARENT);
                        Canvas canvas = new Canvas(result);
                        BitmapShader shader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
                        if (roundPaint == null) {
                            roundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
                            bitmapRect = new RectF();
                        }
                        float scale = size / (float) bitmap.getWidth();
                        canvas.save();
                        canvas.scale(scale, scale);
                        roundPaint.setShader(shader);
                        bitmapRect.set(0, 0, bitmap.getWidth(), bitmap.getHeight());
                        canvas.drawRoundRect(bitmapRect, bitmap.getWidth(), bitmap.getHeight(), roundPaint);
                        canvas.restore();
                        Drawable drawable = ApplicationLoader.applicationContext.getResources().getDrawable(R.drawable.book_logo);
                        int w = AndroidUtilities.dp(15);
                        int left = size - w - AndroidUtilities.dp(2);
                        int top = size - w - AndroidUtilities.dp(2);
                        drawable.setBounds(left, top, left + w, top + w);
                        drawable.draw(canvas);
                        try {
                            canvas.setBitmap(null);
                        } catch (Exception e) {
                            //don't promt, this will crash on 2.x
                        }
                        bitmap = result;
                    }
                } catch (Throwable e) {
                    FileLog.e("tmessages", e);
                }
            }
            if (bitmap != null) {
                addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, bitmap);
            } else {
                if (user != null) {
                    if (user.bot) {
                        addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(ApplicationLoader.applicationContext, R.drawable.book_bot));
                    } else {
                        addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(ApplicationLoader.applicationContext, R.drawable.book_user));
                    }
                } else if (chat != null) {
                    if (ChatObject.isChannel(chat) && !chat.megagroup) {
                        addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(ApplicationLoader.applicationContext, R.drawable.book_channel));
                    } else {
                        addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(ApplicationLoader.applicationContext, R.drawable.book_group));
                    }
                }
            }
        }
        return addIntent;
    }

    public static void installShortcut(long did) {
        try {
            Intent addIntent = createShortcutIntent(did, false);
            addIntent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
            ApplicationLoader.applicationContext.sendBroadcast(addIntent);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static void uninstallShortcut(long did) {
        try {
            Intent addIntent = createShortcutIntent(did, true);
            addIntent.setAction("com.android.launcher.action.UNINSTALL_SHORTCUT");
            ApplicationLoader.applicationContext.sendBroadcast(addIntent);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static int getViewInset(View view) {
        if (view == null || Build.VERSION.SDK_INT < 21 || view.getHeight() == AndroidUtilities.displaySize.y || view.getHeight() == AndroidUtilities.displaySize.y - statusBarHeight) {
            return 0;
        }
        try {
            Field mAttachInfoField = View.class.getDeclaredField("mAttachInfo");
            mAttachInfoField.setAccessible(true);
            Object mAttachInfo = mAttachInfoField.get(view);
            if (mAttachInfo != null) {
                Field mStableInsetsField = mAttachInfo.getClass().getDeclaredField("mStableInsets");
                mStableInsetsField.setAccessible(true);
                Rect insets = (Rect)mStableInsetsField.get(mAttachInfo);
                return insets.bottom;
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return 0;
    }

    public static Point getRealScreenSize() {
        Point size = new Point();
        try {
            WindowManager windowManager = (WindowManager) ApplicationLoader.applicationContext.getSystemService(Context.WINDOW_SERVICE);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                windowManager.getDefaultDisplay().getRealSize(size);
            } else {
                try {
                    Method mGetRawW = Display.class.getMethod("getRawWidth");
                    Method mGetRawH = Display.class.getMethod("getRawHeight");
                    size.set((Integer) mGetRawW.invoke(windowManager.getDefaultDisplay()), (Integer) mGetRawH.invoke(windowManager.getDefaultDisplay()));
                } catch (Exception e) {
                    size.set(windowManager.getDefaultDisplay().getWidth(), windowManager.getDefaultDisplay().getHeight());
                    FileLog.e("tmessages", e);
                }
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return size;
    }

    public static CharSequence getTrimmedString(CharSequence src) {
        if (src == null || src.length() == 0) {
            return src;
        }
        while (src.length() > 0 && (src.charAt(0) == '\n' || src.charAt(0) == ' ')) {
            src = src.subSequence(1, src.length());
        }
        while (src.length() > 0 && (src.charAt(src.length() - 1) == '\n' || src.charAt(src.length() - 1) == ' ')) {
            src = src.subSequence(0, src.length() - 1);
        }
        return src;
    }

    public static void setListViewEdgeEffectColor(AbsListView listView, int color) {
        if (Build.VERSION.SDK_INT >= 21) {
            try {
                Field field = AbsListView.class.getDeclaredField("mEdgeGlowTop");
                field.setAccessible(true);
                EdgeEffect mEdgeGlowTop = (EdgeEffect) field.get(listView);
                if (mEdgeGlowTop != null) {
                    mEdgeGlowTop.setColor(color);
                }

                field = AbsListView.class.getDeclaredField("mEdgeGlowBottom");
                field.setAccessible(true);
                EdgeEffect mEdgeGlowBottom = (EdgeEffect) field.get(listView);
                if (mEdgeGlowBottom != null) {
                    mEdgeGlowBottom.setColor(color);
                }
            } catch (Exception e) {
                FileLog.e("tmessages", e);
            }
        }
    }

    @SuppressLint("NewApi")
    public static void clearDrawableAnimation(View view) {
        if (Build.VERSION.SDK_INT < 21 || view == null) {
            return;
        }
        Drawable drawable;
        if (view instanceof ListView) {
            drawable = ((ListView) view).getSelector();
            if (drawable != null) {
                drawable.setState(StateSet.NOTHING);
            }
        } else {
            drawable = view.getBackground();
            if (drawable != null) {
                drawable.setState(StateSet.NOTHING);
                drawable.jumpToCurrentState();
            }
        }
    }

    public static final int FLAG_TAG_BR = 1;
    public static final int FLAG_TAG_BOLD = 2;
    public static final int FLAG_TAG_COLOR = 4;
    public static final int FLAG_TAG_ALL = FLAG_TAG_BR | FLAG_TAG_BOLD | FLAG_TAG_COLOR;

    public static SpannableStringBuilder replaceTags(String str) {
        return replaceTags(str, FLAG_TAG_ALL);
    }

    public static SpannableStringBuilder replaceTags(String str, int flag) {
        try {
            int start;
            int end;
            StringBuilder stringBuilder = new StringBuilder(str);
            if ((flag & FLAG_TAG_BR) != 0) {
                while ((start = stringBuilder.indexOf("<br>")) != -1) {
                    stringBuilder.replace(start, start + 4, "\n");
                }
                while ((start = stringBuilder.indexOf("<br/>")) != -1) {
                    stringBuilder.replace(start, start + 5, "\n");
                }
            }
            ArrayList<Integer> bolds = new ArrayList<>();
            if ((flag & FLAG_TAG_BOLD) != 0) {
                while ((start = stringBuilder.indexOf("<b>")) != -1) {
                    stringBuilder.replace(start, start + 3, "");
                    end = stringBuilder.indexOf("</b>");
                    if (end == -1) {
                        end = stringBuilder.indexOf("<b>");
                    }
                    stringBuilder.replace(end, end + 4, "");
                    bolds.add(start);
                    bolds.add(end);
                }
            }
            ArrayList<Integer> colors = new ArrayList<>();
            if ((flag & FLAG_TAG_COLOR) != 0) {
                while ((start = stringBuilder.indexOf("<c#")) != -1) {
                    stringBuilder.replace(start, start + 2, "");
                    end = stringBuilder.indexOf(">", start);
                    int color = Color.parseColor(stringBuilder.substring(start, end));
                    stringBuilder.replace(start, end + 1, "");
                    end = stringBuilder.indexOf("</c>");
                    stringBuilder.replace(end, end + 4, "");
                    colors.add(start);
                    colors.add(end);
                    colors.add(color);
                }
            }
            SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(stringBuilder);
            for (int a = 0; a < bolds.size() / 2; a++) {
                spannableStringBuilder.setSpan(new TypefaceSpan(AndroidUtilities.getTypeface("fonts/rmedium.ttf")), bolds.get(a * 2), bolds.get(a * 2 + 1), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
            }
            for (int a = 0; a < colors.size() / 3; a++) {
                spannableStringBuilder.setSpan(new ForegroundColorSpan(colors.get(a * 3 + 2)), colors.get(a * 3), colors.get(a * 3 + 1), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
            }
            return spannableStringBuilder;
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return new SpannableStringBuilder(str);
    }

    public static boolean needShowPasscode(boolean reset) {
        boolean wasInBackground = ForegroundDetector.getInstance().isWasInBackground(reset);
        if (reset) {
            ForegroundDetector.getInstance().resetBackgroundVar();
        }
        return UserConfig.passcodeHash.length() > 0 && wasInBackground &&
                (UserConfig.appLocked || UserConfig.autoLockIn != 0 && UserConfig.lastPauseTime != 0 && !UserConfig.appLocked && (UserConfig.lastPauseTime + UserConfig.autoLockIn) <= ConnectionsManager.getInstance().getCurrentTime());
    }

    public static void shakeView(final View view, final float x, final int num) {
        if (num == 6) {
            view.setTranslationX(0);
            return;
        }
        AnimatorSet animatorSet = new AnimatorSet();
        animatorSet.playTogether(ObjectAnimator.ofFloat(view, "translationX", AndroidUtilities.dp(x)));
        animatorSet.setDuration(50);
        animatorSet.addListener(new AnimatorListenerAdapterProxy() {
            @Override
            public void onAnimationEnd(Animator animation) {
                shakeView(view, num == 5 ? 0 : -x, num + 1);
            }
        });
        animatorSet.start();
    }

    /*public static String ellipsize(String text, int maxLines, int maxWidth, TextPaint paint) {
        if (text == null || paint == null) {
            return null;
        }
        int count;
        int offset = 0;
        StringBuilder result = null;
        TextView
        for (int a = 0; a < maxLines; a++) {
            count = paint.breakText(text, true, maxWidth, null);
            if (a != maxLines - 1) {
                if (result == null) {
                    result = new StringBuilder(count * maxLines + 1);
                }
                boolean foundSpace = false;
                for (int c = count - 1; c >= offset; c--) {
                    if (text.charAt(c) == ' ') {
                        foundSpace = true;
                        result.append(text.substring(offset, c - 1));
                        offset = c - 1;
                    }
                }
                if (!foundSpace) {
                    offset = count;
                }
                text = text.substring(0, offset);
            } else if (maxLines == 1) {
                return text.substring(0, count);
            } else {
                result.append(text.substring(0, count));
            }
        }
        return result.toString();
    }*/

    /*public static void turnOffHardwareAcceleration(Window window) {
        if (window == null || Build.MODEL == null) {
            return;
        }
        if (Build.MODEL.contains("GT-S5301") ||
                Build.MODEL.contains("GT-S5303") ||
                Build.MODEL.contains("GT-B5330") ||
                Build.MODEL.contains("GT-S5302") ||
                Build.MODEL.contains("GT-S6012B") ||
                Build.MODEL.contains("MegaFon_SP-AI")) {
            window.clearFlags(WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED);
        }
    }*/

    public static void checkForCrashes(Activity context) {
        CrashManager.register(context, BuildVars.DEBUG_VERSION ? BuildVars.HOCKEY_APP_HASH_DEBUG : BuildVars.HOCKEY_APP_HASH, new CrashManagerListener() {
            @Override
            public boolean includeDeviceData() {
                return true;
            }
        });
    }

    public static void checkForUpdates(Activity context) {
        if (BuildVars.DEBUG_VERSION) {
            UpdateManager.register(context, BuildVars.DEBUG_VERSION ? BuildVars.HOCKEY_APP_HASH_DEBUG : BuildVars.HOCKEY_APP_HASH);
        }
    }

    public static void unregisterUpdates() {
        if (BuildVars.DEBUG_VERSION) {
            UpdateManager.unregister();
        }
    }

    public static void addToClipboard(CharSequence str) {
        try {
            android.content.ClipboardManager clipboard = (android.content.ClipboardManager) ApplicationLoader.applicationContext.getSystemService(Context.CLIPBOARD_SERVICE);
            android.content.ClipData clip = android.content.ClipData.newPlainText("label", str);
            clipboard.setPrimaryClip(clip);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    public static void addMediaToGallery(String fromPath) {
        if (fromPath == null) {
            return;
        }
        File f = new File(fromPath);
        Uri contentUri = Uri.fromFile(f);
        addMediaToGallery(contentUri);
    }

    public static void addMediaToGallery(Uri uri) {
        if (uri == null) {
            return;
        }
        try {
            Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
            mediaScanIntent.setData(uri);
            ApplicationLoader.applicationContext.sendBroadcast(mediaScanIntent);
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    }

    private static File getAlbumDir() {
        if (Build.VERSION.SDK_INT >= 23 && ApplicationLoader.applicationContext.checkSelfPermission(android.Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            return FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_CACHE);
        }
        File storageDir = null;
        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
            storageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "Telegram");
            if (!storageDir.mkdirs()) {
                if (!storageDir.exists()){
                    FileLog.d("tmessages", "failed to create directory");
                    return null;
                }
            }
        } else {
            FileLog.d("tmessages", "External storage is not mounted READ/WRITE.");
        }

        return storageDir;
    }

    @SuppressLint("NewApi")
    public static String getPath(final Uri uri) {
        try {
            final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
            if (isKitKat && DocumentsContract.isDocumentUri(ApplicationLoader.applicationContext, uri)) {
                if (isExternalStorageDocument(uri)) {
                    final String docId = DocumentsContract.getDocumentId(uri);
                    final String[] split = docId.split(":");
                    final String type = split[0];
                    if ("primary".equalsIgnoreCase(type)) {
                        return Environment.getExternalStorageDirectory() + "/" + split[1];
                    }
                } else if (isDownloadsDocument(uri)) {
                    final String id = DocumentsContract.getDocumentId(uri);
                    final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
                    return getDataColumn(ApplicationLoader.applicationContext, contentUri, null, null);
                } else if (isMediaDocument(uri)) {
                    final String docId = DocumentsContract.getDocumentId(uri);
                    final String[] split = docId.split(":");
                    final String type = split[0];

                    Uri contentUri = null;
                    switch (type) {
                        case "image":
                            contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                            break;
                        case "video":
                            contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                            break;
                        case "audio":
                            contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                            break;
                    }

                    final String selection = "_id=?";
                    final String[] selectionArgs = new String[] {
                            split[1]
                    };

                    return getDataColumn(ApplicationLoader.applicationContext, contentUri, selection, selectionArgs);
                }
            } else if ("content".equalsIgnoreCase(uri.getScheme())) {
                return getDataColumn(ApplicationLoader.applicationContext, uri, null, null);
            } else if ("file".equalsIgnoreCase(uri.getScheme())) {
                return uri.getPath();
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return null;
    }

    public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {

        Cursor cursor = null;
        final String column = "_data";
        final String[] projection = {
                column
        };

        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
            if (cursor != null && cursor.moveToFirst()) {
                final int column_index = cursor.getColumnIndexOrThrow(column);
                String value = cursor.getString(column_index);
                if (value.startsWith("content://") || !value.startsWith("/") && !value.startsWith("file://")) {
                    return null;
                }
                return value;
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
        return null;
    }

    public static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    }

    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    }

    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());
    }

    public static File generatePicturePath() {
        try {
            File storageDir = getAlbumDir();
            String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date());
            return new File(storageDir, "IMG_" + timeStamp + ".jpg");
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return null;
    }

    public static CharSequence generateSearchName(String name, String name2, String q) {
        if (name == null && name2 == null) {
            return "";
        }
        SpannableStringBuilder builder = new SpannableStringBuilder();
        String wholeString = name;
        if (wholeString == null || wholeString.length() == 0) {
            wholeString = name2;
        } else if (name2 != null && name2.length() != 0) {
            wholeString += " " + name2;
        }
        wholeString = wholeString.trim();
        String lower = " " + wholeString.toLowerCase();

        int index;
        int lastIndex = 0;
        while ((index = lower.indexOf(" " + q, lastIndex)) != -1) {
            int idx = index - (index == 0 ? 0 : 1);
            int end = q.length() + (index == 0 ? 0 : 1) + idx;

            if (lastIndex != 0 && lastIndex != idx + 1) {
                builder.append(wholeString.substring(lastIndex, idx));
            } else if (lastIndex == 0 && idx != 0) {
                builder.append(wholeString.substring(0, idx));
            }

            String query = wholeString.substring(idx, end);
            if (query.startsWith(" ")) {
                builder.append(" ");
            }
            query = query.trim();
            builder.append(AndroidUtilities.replaceTags("<c#ff4d83b3>" + query + "</c>"));

            lastIndex = end;
        }

        if (lastIndex != -1 && lastIndex != wholeString.length()) {
            builder.append(wholeString.substring(lastIndex, wholeString.length()));
        }

        return builder;
    }

    public static File generateVideoPath() {
        try {
            File storageDir = getAlbumDir();
            String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date());
            return new File(storageDir, "VID_" + timeStamp + ".mp4");
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return null;
    }

    public static String formatFileSize(long size) {
        if (size < 1024) {
            return String.format("%d B", size);
        } else if (size < 1024 * 1024) {
            return String.format("%.1f KB", size / 1024.0f);
        } else if (size < 1024 * 1024 * 1024) {
            return String.format("%.1f MB", size / 1024.0f / 1024.0f);
        } else {
            return String.format("%.1f GB", size / 1024.0f / 1024.0f / 1024.0f);
        }
    }

    public static byte[] decodeQuotedPrintable(final byte[] bytes) {
        if (bytes == null) {
            return null;
        }
        final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
        for (int i = 0; i < bytes.length; i++) {
            final int b = bytes[i];
            if (b == '=') {
                try {
                    final int u = Character.digit((char) bytes[++i], 16);
                    final int l = Character.digit((char) bytes[++i], 16);
                    buffer.write((char) ((u << 4) + l));
                } catch (Exception e) {
                    FileLog.e("tmessages", e);
                    return null;
                }
            } else {
                buffer.write(b);
            }
        }
        byte[] array = buffer.toByteArray();
        try {
            buffer.close();
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        return array;
    }

    public static boolean copyFile(InputStream sourceFile, File destFile) throws IOException {
        OutputStream out = new FileOutputStream(destFile);
        byte[] buf = new byte[4096];
        int len;
        while ((len = sourceFile.read(buf)) > 0) {
            Thread.yield();
            out.write(buf, 0, len);
        }
        out.close();
        return true;
    }

    public static boolean copyFile(File sourceFile, File destFile) throws IOException {
        if (!destFile.exists()) {
            destFile.createNewFile();
        }
        FileInputStream source = null;
        FileOutputStream destination = null;
        try {
            source = new FileInputStream(sourceFile);
            destination = new FileOutputStream(destFile);
            destination.getChannel().transferFrom(source.getChannel(), 0, source.getChannel().size());
        } catch (Exception e) {
            FileLog.e("tmessages", e);
            return false;
        } finally {
            if (source != null) {
                source.close();
            }
            if (destination != null) {
                destination.close();
            }
        }
        return true;
    }

    public static byte[] calcAuthKeyHash(byte[] auth_key) {
        byte[] sha1 = Utilities.computeSHA1(auth_key);
        byte[] key_hash = new byte[16];
        System.arraycopy(sha1, 0, key_hash, 0, 16);
        return key_hash;
    }

    public static void openForView(MessageObject message, Activity activity) throws Exception {
        File f = null;
        String fileName = message.getFileName();
        if (message.messageOwner.attachPath != null && message.messageOwner.attachPath.length() != 0) {
            f = new File(message.messageOwner.attachPath);
        }
        if (f == null || !f.exists()) {
            f = FileLoader.getPathToMessage(message.messageOwner);
        }
        if (f != null && f.exists()) {
            String realMimeType = null;
            Intent intent = new Intent(Intent.ACTION_VIEW);
            MimeTypeMap myMime = MimeTypeMap.getSingleton();
            int idx = fileName.lastIndexOf('.');
            if (idx != -1) {
                String ext = fileName.substring(idx + 1);
                realMimeType = myMime.getMimeTypeFromExtension(ext.toLowerCase());
                if (realMimeType == null) {
                    if (message.type == 9 || message.type == 0) {
                        realMimeType = message.getDocument().mime_type;
                    }
                    if (realMimeType == null || realMimeType.length() == 0) {
                        realMimeType = null;
                    }
                }
                if (realMimeType != null) {
                    intent.setDataAndType(Uri.fromFile(f), realMimeType);
                } else {
                    intent.setDataAndType(Uri.fromFile(f), "text/plain");
                }
            } else {
                intent.setDataAndType(Uri.fromFile(f), "text/plain");
            }
            if (realMimeType != null) {
                try {
                    activity.startActivityForResult(intent, 500);
                } catch (Exception e) {
                    intent.setDataAndType(Uri.fromFile(f), "text/plain");
                    activity.startActivityForResult(intent, 500);
                }
            } else {
                activity.startActivityForResult(intent, 500);
            }
        }
    }
}