/*
 * This is the source code of Telegram for Android v. 1.7.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, 2013-2014.
 */

package org.telegram.android;

import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.media.ExifInterface;
import android.media.ThumbnailUtils;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Environment;
import android.os.ParcelFileDescriptor;
import android.provider.MediaStore;

import org.telegram.messenger.DispatchQueue;
import org.telegram.messenger.FileLoader;
import org.telegram.messenger.FileLog;
import org.telegram.messenger.TLObject;
import org.telegram.messenger.TLRPC;
import org.telegram.messenger.UserConfig;
import org.telegram.messenger.Utilities;
import org.telegram.messenger.ApplicationLoader;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.lang.reflect.Method;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.concurrent.ConcurrentHashMap;

public class ImageLoader {

    private HashMap<String, Integer> bitmapUseCounts = new HashMap<>();
    private LruCache memCache;
    private HashMap<String, CacheImage> imageLoadingByUrl = new HashMap<>();
    private HashMap<String, CacheImage> imageLoadingByKeys = new HashMap<>();
    private HashMap<Integer, CacheImage> imageLoadingByTag = new HashMap<>();
    private HashMap<String, ThumbGenerateInfo> waitingForQualityThumb = new HashMap<>();
    private HashMap<Integer, String> waitingForQualityThumbByTag = new HashMap<>();
    private LinkedList<HttpImageTask> httpTasks = new LinkedList<>();
    private DispatchQueue cacheOutQueue = new DispatchQueue("cacheOutQueue");
    private DispatchQueue cacheThumbOutQueue = new DispatchQueue("cacheThumbOutQueue");
    private DispatchQueue thumbGeneratingQueue = new DispatchQueue("thumbGeneratingQueue");
    private DispatchQueue imageLoadQueue = new DispatchQueue("imageLoadQueue");
    private ConcurrentHashMap<String, Float> fileProgresses = new ConcurrentHashMap<>();
    private HashMap<String, ThumbGenerateTask> thumbGenerateTasks = new HashMap<>();
    private static byte[] bytes;
    private static byte[] bytesThumb;
    private static byte[] header = new byte[12];
    private static byte[] headerThumb = new byte[12];
    private int currentHttpTasksCount = 0;

    private LinkedList<HttpFileTask> httpFileLoadTasks = new LinkedList<>();
    private HashMap<String, HttpFileTask> httpFileLoadTasksByKeys = new HashMap<>();
    private HashMap<String, Runnable> retryHttpsTasks = new HashMap<>();
    private int currentHttpFileLoadTasksCount = 0;

    protected VMRuntimeHack runtimeHack = null;
    private String ignoreRemoval = null;

    private volatile long lastCacheOutTime = 0;
    private int lastImageNum = 0;
    private long lastProgressUpdateTime = 0;

    private File telegramPath = null;

    private class ThumbGenerateInfo {
        private int count;
        private TLRPC.FileLocation fileLocation;
        private String filter;
    }

    private class HttpFileTask extends AsyncTask<Void, Void, Boolean> {

        private String url;
        private File tempFile;
        private String ext;
        private RandomAccessFile fileOutputStream = null;
        private boolean canRetry = true;

        public HttpFileTask(String url, File tempFile, String ext) {
            this.url = url;
            this.tempFile = tempFile;
            this.ext = ext;
        }

        protected Boolean doInBackground(Void... voids) {
            InputStream httpConnectionStream = null;
            boolean done = false;

            URLConnection httpConnection = null;
            try {
                URL downloadUrl = new URL(url);
                httpConnection = downloadUrl.openConnection();
                httpConnection.addRequestProperty("User-Agent", "Mozilla/5.0 (Linux; Android 4.4; Nexus 5 Build/_BuildID_) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36");
                httpConnection.addRequestProperty("Referer", "google.com");
                httpConnection.setConnectTimeout(5000);
                httpConnection.setReadTimeout(5000);
                if (httpConnection instanceof HttpURLConnection) {
                    HttpURLConnection httpURLConnection = (HttpURLConnection) httpConnection;
                    httpURLConnection.setInstanceFollowRedirects(true);
                    int status = httpURLConnection.getResponseCode();
                    if (status == HttpURLConnection.HTTP_MOVED_TEMP || status == HttpURLConnection.HTTP_MOVED_PERM || status == HttpURLConnection.HTTP_SEE_OTHER) {
                        String newUrl = httpURLConnection.getHeaderField("Location");
                        String cookies = httpURLConnection.getHeaderField("Set-Cookie");
                        downloadUrl = new URL(newUrl);
                        httpConnection = downloadUrl.openConnection();
                        httpConnection.setRequestProperty("Cookie", cookies);
                        httpConnection.addRequestProperty("User-Agent", "Mozilla/5.0 (Linux; Android 4.4; Nexus 5 Build/_BuildID_) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36");
                        httpConnection.addRequestProperty("Referer", "google.com");
                    }
                }
                httpConnection.connect();
                httpConnectionStream = httpConnection.getInputStream();

                fileOutputStream = new RandomAccessFile(tempFile, "rws");
            } catch (Throwable e) {
                if (e instanceof UnknownHostException) {
                    canRetry = false;
                }
                FileLog.e("tmessages", e);
            }

            if (canRetry) {
                try {
                    if (httpConnection != null && httpConnection instanceof HttpURLConnection) {
                        int code = ((HttpURLConnection) httpConnection).getResponseCode();
                        if (code != HttpURLConnection.HTTP_OK && code != HttpURLConnection.HTTP_ACCEPTED && code != HttpURLConnection.HTTP_NOT_MODIFIED) {
                            canRetry = false;
                        }
                    }
                } catch (Exception e) {
                    FileLog.e("tmessages", e);
                }

                if (httpConnectionStream != null) {
                    try {
                        byte[] data = new byte[1024 * 4];
                        while (true) {
                            if (isCancelled()) {
                                break;
                            }
                            try {
                                int read = httpConnectionStream.read(data);
                                if (read > 0) {
                                    fileOutputStream.write(data, 0, read);
                                } else if (read == -1) {
                                    done = true;
                                    break;
                                } else {
                                    break;
                                }
                            } catch (Exception e) {
                                FileLog.e("tmessages", e);
                                break;
                            }
                        }
                    } catch (Throwable e) {
                        FileLog.e("tmessages", e);
                    }
                }

                try {
                    if (fileOutputStream != null) {
                        fileOutputStream.close();
                        fileOutputStream = null;
                    }
                } catch (Throwable e) {
                    FileLog.e("tmessages", e);
                }

                try {
                    if (httpConnectionStream != null) {
                        httpConnectionStream.close();
                    }
                } catch (Throwable e) {
                    FileLog.e("tmessages", e);
                }
            }

            return done;
        }

        @Override
        protected void onPostExecute(Boolean result) {
            runHttpFileLoadTasks(this, result ? 2 : 1);
        }

        @Override
        protected void onCancelled() {
            runHttpFileLoadTasks(this, 2);
        }
    }

    private class HttpImageTask extends AsyncTask<Void, Void, Boolean> {

        private CacheImage cacheImage = null;
        private RandomAccessFile fileOutputStream = null;
        private int imageSize;
        private long lastProgressTime;
        private boolean canRetry = true;
        private URLConnection httpConnection = null;

        public HttpImageTask(CacheImage cacheImage, int size) {
            this.cacheImage = cacheImage;
            imageSize = size;
        }

        private void reportProgress(final float progress) {
            long currentTime = System.currentTimeMillis();
            if (progress == 1 || lastProgressTime == 0 || lastProgressTime < currentTime - 500) {
                lastProgressTime = currentTime;
                Utilities.stageQueue.postRunnable(new Runnable() {
                    @Override
                    public void run() {
                        fileProgresses.put(cacheImage.url, progress);
                        AndroidUtilities.runOnUIThread(new Runnable() {
                            @Override
                            public void run() {
                                NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileLoadProgressChanged, cacheImage.url, progress);
                            }
                        });
                    }
                });
            }
        }

        protected Boolean doInBackground(Void... voids) {
            InputStream httpConnectionStream = null;
            boolean done = false;

            if (!isCancelled()) {
                try {
                    URL downloadUrl = new URL(cacheImage.httpUrl);
                    httpConnection = downloadUrl.openConnection();
                    httpConnection.addRequestProperty("User-Agent", "Mozilla/5.0 (Linux; Android 4.4; Nexus 5 Build/_BuildID_) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36");
                    httpConnection.addRequestProperty("Referer", "google.com");
                    httpConnection.setConnectTimeout(5000);
                    httpConnection.setReadTimeout(5000);
                    if (httpConnection instanceof HttpURLConnection) {
                        ((HttpURLConnection) httpConnection).setInstanceFollowRedirects(true);
                    }
                    if (!isCancelled()) {
                        httpConnection.connect();
                        httpConnectionStream = httpConnection.getInputStream();
                        fileOutputStream = new RandomAccessFile(cacheImage.tempFilePath, "rws");
                    }
                } catch (Throwable e) {
                    FileLog.e("tmessages", e);
                }
            }

            if (!isCancelled()) {
                try {
                    if (httpConnection != null && httpConnection instanceof HttpURLConnection) {
                        int code = ((HttpURLConnection) httpConnection).getResponseCode();
                        if (code != HttpURLConnection.HTTP_OK && code != HttpURLConnection.HTTP_ACCEPTED && code != HttpURLConnection.HTTP_NOT_MODIFIED) {
                            canRetry = false;
                        }
                    }
                } catch (Exception e) {
                    FileLog.e("tmessages", e);
                }

                if (httpConnectionStream != null) {
                    try {
                        byte[] data = new byte[1024 * 2];
                        int totalLoaded = 0;
                        while (true) {
                            if (isCancelled()) {
                                break;
                            }
                            try {
                                int read = httpConnectionStream.read(data);
                                if (read > 0) {
                                    totalLoaded += read;
                                    fileOutputStream.write(data, 0, read);
                                    if (imageSize != 0) {
                                        reportProgress(totalLoaded / (float) imageSize);
                                    }
                                } else if (read == -1) {
                                    done = true;
                                    if (imageSize != 0) {
                                        reportProgress(1.0f);
                                    }
                                    break;
                                } else {
                                    break;
                                }
                            } catch (Exception e) {
                                FileLog.e("tmessages", e);
                                break;
                            }
                        }
                    } catch (Throwable e) {
                        FileLog.e("tmessages", e);
                    }
                }
            }

            try {
                if (fileOutputStream != null) {
                    fileOutputStream.close();
                    fileOutputStream = null;
                }
            } catch (Throwable e) {
                FileLog.e("tmessages", e);
            }

            try {
                if (httpConnectionStream != null) {
                    httpConnectionStream.close();
                }
            } catch (Throwable e) {
                FileLog.e("tmessages", e);
            }

            if (done) {
                if (cacheImage.tempFilePath != null) {
                    if (!cacheImage.tempFilePath.renameTo(cacheImage.finalFilePath)) {
                        cacheImage.finalFilePath = cacheImage.tempFilePath;
                    }
                }
            }

            return done;
        }

        @Override
        protected void onPostExecute(final Boolean result) {
            if (result || !canRetry) {
                fileDidLoaded(cacheImage.url, cacheImage.finalFilePath, FileLoader.MEDIA_DIR_IMAGE);
            } else {
                httpFileLoadError(cacheImage.url);
            }
            Utilities.stageQueue.postRunnable(new Runnable() {
                @Override
                public void run() {
                    fileProgresses.remove(cacheImage.url);
                    AndroidUtilities.runOnUIThread(new Runnable() {
                        @Override
                        public void run() {
                            if (result) {
                                NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileDidLoaded, cacheImage.url);
                            } else {
                                NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileDidFailedLoad, cacheImage.url, 2);
                            }
                        }
                    });
                }
            });
            imageLoadQueue.postRunnable(new Runnable() {
                @Override
                public void run() {
                    runHttpTasks(true);
                }
            });
        }

        @Override
        protected void onCancelled() {
            imageLoadQueue.postRunnable(new Runnable() {
                @Override
                public void run() {
                    runHttpTasks(true);
                }
            });
            Utilities.stageQueue.postRunnable(new Runnable() {
                @Override
                public void run() {
                    fileProgresses.remove(cacheImage.url);
                    AndroidUtilities.runOnUIThread(new Runnable() {
                        @Override
                        public void run() {
                            NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileDidFailedLoad, cacheImage.url, 1);
                        }
                    });
                }
            });
        }
    }

    private class ThumbGenerateTask implements Runnable {

        private File originalPath;
        private int mediaType;
        private TLRPC.FileLocation thumbLocation;
        private String filter;

        public ThumbGenerateTask(int type, File path, TLRPC.FileLocation location, String f) {
            mediaType = type;
            originalPath = path;
            thumbLocation = location;
            filter = f;
        }

        private void removeTask() {
            if (thumbLocation == null) {
                return;
            }
            final String name = FileLoader.getAttachFileName(thumbLocation);
            imageLoadQueue.postRunnable(new Runnable() {
                @Override
                public void run() {
                    thumbGenerateTasks.remove(name);
                }
            });
        }

        @Override
        public void run() {
            try {
                if (thumbLocation == null) {
                    removeTask();
                    return;
                }
                final String key = thumbLocation.volume_id + "_" + thumbLocation.local_id;
                File thumbFile = new File(FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_CACHE), "q_" + key + ".jpg");
                if (thumbFile.exists() || !originalPath.exists()) {
                    removeTask();
                    return;
                }
                int size = Math.min(180, Math.min(AndroidUtilities.displaySize.x, AndroidUtilities.displaySize.y) / 4);
                Bitmap originalBitmap = null;
                if (mediaType == FileLoader.MEDIA_DIR_IMAGE) {
                    originalBitmap = ImageLoader.loadBitmap(originalPath.toString(), null, size, size, false);
                } else if (mediaType == FileLoader.MEDIA_DIR_VIDEO) {
                    originalBitmap = ThumbnailUtils.createVideoThumbnail(originalPath.toString(), MediaStore.Video.Thumbnails.MINI_KIND);
                } else if (mediaType == FileLoader.MEDIA_DIR_DOCUMENT) {
                    String path = originalPath.toString().toLowerCase();
                    if (!path.endsWith(".jpg") && !path.endsWith(".jpeg") && !path.endsWith(".png") && !path.endsWith(".gif")) {
                        removeTask();
                        return;
                    }
                    originalBitmap = ImageLoader.loadBitmap(path, null, size, size, false);
                }
                if (originalBitmap == null) {
                    removeTask();
                    return;
                }

                int w = originalBitmap.getWidth();
                int h = originalBitmap.getHeight();
                if (w == 0 || h == 0) {
                    removeTask();
                    return;
                }
                float scaleFactor = Math.min((float) w / size, (float) h / size);
                Bitmap scaledBitmap = Bitmap.createScaledBitmap(originalBitmap, (int) (w / scaleFactor), (int) (h / scaleFactor), true);
                if (scaledBitmap != originalBitmap) {
                    originalBitmap.recycle();
                }
                originalBitmap = scaledBitmap;
                FileOutputStream stream = new FileOutputStream(thumbFile);
                originalBitmap.compress(Bitmap.CompressFormat.JPEG, 60, stream);
                try {
                    stream.close();
                } catch (Exception e) {
                    FileLog.e("tmessages", e);
                }
                final BitmapDrawable bitmapDrawable = new BitmapDrawable(originalBitmap);
                AndroidUtilities.runOnUIThread(new Runnable() {
                    @Override
                    public void run() {
                        removeTask();

                        String kf = key;
                        if (filter != null) {
                            kf += "@" + filter;
                        }
                        NotificationCenter.getInstance().postNotificationName(NotificationCenter.messageThumbGenerated, bitmapDrawable, kf);
                        /*BitmapDrawable old = memCache.get(kf);
                        if (old != null) {
                            Bitmap image = old.getBitmap();
                            if (runtimeHack != null) {
                                runtimeHack.trackAlloc(image.getRowBytes() * image.getHeight());
                            }
                            if (!image.isRecycled()) {
                                image.recycle();
                            }
                        }*/
                        memCache.put(kf, bitmapDrawable);
                    }
                });
            } catch (Throwable e) {
                FileLog.e("tmessages", e);
                removeTask();
            }
        }
    }

    private class CacheOutTask implements Runnable {
        private Thread runningThread;
        private final Object sync = new Object();

        private CacheImage cacheImage;
        private boolean isCancelled;

        public CacheOutTask(CacheImage image) {
            cacheImage = image;
        }

        @Override
        public void run() {
            synchronized (sync) {
                runningThread = Thread.currentThread();
                Thread.interrupted();
                if (isCancelled) {
                    return;
                }
            }

            Long mediaId = null;
            boolean mediaIsVideo = false;
            Bitmap image = null;
            File cacheFileFinal = cacheImage.finalFilePath;
            boolean canDeleteFile = true;
            boolean useNativeWebpLoaded = false;

            if (Build.VERSION.SDK_INT < 19) {
                RandomAccessFile randomAccessFile = null;
                try {
                    randomAccessFile = new RandomAccessFile(cacheFileFinal, "r");
                    byte[] bytes;
                    if (cacheImage.thumb) {
                        bytes = headerThumb;
                    } else {
                        bytes = header;
                    }
                    randomAccessFile.readFully(bytes, 0, bytes.length);
                    String str = new String(bytes);
                    if (str != null) {
                        str = str.toLowerCase();
                        if (str.startsWith("riff") && str.endsWith("webp")) {
                            useNativeWebpLoaded = true;
                        }
                    }
                    randomAccessFile.close();
                } catch (Exception e) {
                    FileLog.e("tmessages", e);
                } finally {
                    if (randomAccessFile != null) {
                        try {
                            randomAccessFile.close();
                        } catch (Exception e) {
                            FileLog.e("tmessages", e);
                        }
                    }
                }
            }

            if (cacheImage.thumb) {
                int blurType = 0;
                if (cacheImage.filter != null) {
                    if (cacheImage.filter.contains("b2")) {
                        blurType = 3;
                    } else if (cacheImage.filter.contains("b1")) {
                        blurType = 2;
                    } else if (cacheImage.filter.contains("b")) {
                        blurType = 1;
                    }
                }

                try {
                    lastCacheOutTime = System.currentTimeMillis();
                    synchronized (sync) {
                        if (isCancelled) {
                            return;
                        }
                    }

                    BitmapFactory.Options opts = new BitmapFactory.Options();
                    opts.inSampleSize = 1;

                    if (!useNativeWebpLoaded && Build.VERSION.SDK_INT > 10 && Build.VERSION.SDK_INT < 21) {
                        opts.inPurgeable = true;
                    }

                    if (useNativeWebpLoaded) {
                        RandomAccessFile file = new RandomAccessFile(cacheFileFinal, "r");
                        ByteBuffer buffer = file.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, cacheFileFinal.length());
                        image = Utilities.loadWebpImage(buffer, buffer.limit(), null);
                        file.close();
                    } else {
                        if (opts.inPurgeable) {
                            RandomAccessFile f = new RandomAccessFile(cacheFileFinal, "r");
                            int len = (int) f.length();
                            byte[] data = bytesThumb != null && bytesThumb.length >= len ? bytesThumb : null;
                            if (data == null) {
                                bytesThumb = data = new byte[len];
                            }
                            f.readFully(data, 0, len);
                            image = BitmapFactory.decodeByteArray(data, 0, len, opts);
                        } else {
                            FileInputStream is = new FileInputStream(cacheFileFinal);
                            image = BitmapFactory.decodeStream(is, null, opts);
                            is.close();
                        }
                    }

                    if (image == null) {
                        if (cacheFileFinal.length() == 0 || cacheImage.filter == null) {
                            cacheFileFinal.delete();
                        }
                    } else {
                        if (blurType == 1) {
                            Utilities.blurBitmap(image, 3, opts.inPurgeable ? 0 : 1);
                        } else if (blurType == 2) {
                            Utilities.blurBitmap(image, 1, opts.inPurgeable ? 0 : 1);
                        } else if (blurType == 3) {
                            Utilities.blurBitmap(image, 7, opts.inPurgeable ? 0 : 1);
                            Utilities.blurBitmap(image, 7, opts.inPurgeable ? 0 : 1);
                            Utilities.blurBitmap(image, 7, opts.inPurgeable ? 0 : 1);
                        }
                        if (blurType == 0 && opts.inPurgeable) {
                            Utilities.pinBitmap(image);
                        }
                        if (runtimeHack != null) {
                            runtimeHack.trackFree(image.getRowBytes() * image.getHeight());
                        }
                    }
                } catch (Throwable e) {
                    FileLog.e("tmessages", e);
                }
            } else {
                try {
                    if (cacheImage.httpUrl != null) {
                        if (cacheImage.httpUrl.startsWith("thumb://")) {
                            int idx = cacheImage.httpUrl.indexOf(":", 8);
                            if (idx >= 0) {
                                mediaId = Long.parseLong(cacheImage.httpUrl.substring(8, idx));
                                mediaIsVideo = false;
                            }
                            canDeleteFile = false;
                        } else if (cacheImage.httpUrl.startsWith("vthumb://")) {
                            int idx = cacheImage.httpUrl.indexOf(":", 9);
                            if (idx >= 0) {
                                mediaId = Long.parseLong(cacheImage.httpUrl.substring(9, idx));
                                mediaIsVideo = true;
                            }
                            canDeleteFile = false;
                        } else if (!cacheImage.httpUrl.startsWith("http")) {
                            canDeleteFile = false;
                        }
                    }

                    int delay = 20;
                    if (runtimeHack != null) {
                        delay = 60;
                    }
                    if (mediaId != null) {
                        delay = 0;
                    }
                    if (delay != 0 && lastCacheOutTime != 0 && lastCacheOutTime > System.currentTimeMillis() - delay && Build.VERSION.SDK_INT < 21) {
                        Thread.sleep(delay);
                    }
                    lastCacheOutTime = System.currentTimeMillis();
                    synchronized (sync) {
                        if (isCancelled) {
                            return;
                        }
                    }

                    BitmapFactory.Options opts = new BitmapFactory.Options();
                    opts.inSampleSize = 1;

                    float w_filter = 0;
                    float h_filter = 0;
                    boolean blur = false;
                    if (cacheImage.filter != null) {
                        String args[] = cacheImage.filter.split("_");
                        if (args.length >= 2) {
                            w_filter = Float.parseFloat(args[0]) * AndroidUtilities.density;
                            h_filter = Float.parseFloat(args[1]) * AndroidUtilities.density;
                        }
                        if (cacheImage.filter.contains("b")) {
                            blur = true;
                        }
                        if (w_filter != 0 && h_filter != 0) {
                            opts.inJustDecodeBounds = true;

                            if (mediaId != null) {
                                if (mediaIsVideo) {
                                    MediaStore.Video.Thumbnails.getThumbnail(ApplicationLoader.applicationContext.getContentResolver(), mediaId, MediaStore.Video.Thumbnails.MINI_KIND, opts);
                                } else {
                                    MediaStore.Images.Thumbnails.getThumbnail(ApplicationLoader.applicationContext.getContentResolver(), mediaId, MediaStore.Images.Thumbnails.MINI_KIND, opts);
                                }
                            } else {
                                FileInputStream is = new FileInputStream(cacheFileFinal);
                                image = BitmapFactory.decodeStream(is, null, opts);
                                is.close();
                            }

                            float photoW = opts.outWidth;
                            float photoH = opts.outHeight;
                            float scaleFactor = Math.max(photoW / w_filter, photoH / h_filter);
                            if (scaleFactor < 1) {
                                scaleFactor = 1;
                            }
                            opts.inJustDecodeBounds = false;
                            opts.inSampleSize = (int) scaleFactor;
                        }
                    }
                    synchronized (sync) {
                        if (isCancelled) {
                            return;
                        }
                    }

                    if (cacheImage.filter == null || blur || cacheImage.httpUrl != null) {
                        opts.inPreferredConfig = Bitmap.Config.ARGB_8888;
                    } else {
                        opts.inPreferredConfig = Bitmap.Config.RGB_565;
                    }
                    if (!useNativeWebpLoaded && Build.VERSION.SDK_INT > 10 && Build.VERSION.SDK_INT < 21) {
                        opts.inPurgeable = true;
                    }

                    opts.inDither = false;
                    if (mediaId != null) {
                        if (mediaIsVideo) {
                            image = MediaStore.Video.Thumbnails.getThumbnail(ApplicationLoader.applicationContext.getContentResolver(), mediaId, MediaStore.Video.Thumbnails.MINI_KIND, opts);
                        } else {
                            image = MediaStore.Images.Thumbnails.getThumbnail(ApplicationLoader.applicationContext.getContentResolver(), mediaId, MediaStore.Images.Thumbnails.MINI_KIND, opts);
                        }
                    }
                    if (image == null) {
                        if (useNativeWebpLoaded) {
                            RandomAccessFile file = new RandomAccessFile(cacheFileFinal, "r");
                            ByteBuffer buffer = file.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, cacheFileFinal.length());
                            image = Utilities.loadWebpImage(buffer, buffer.limit(), null);
                            file.close();
                        } else {
                            if (opts.inPurgeable) {
                                RandomAccessFile f = new RandomAccessFile(cacheFileFinal, "r");
                                int len = (int) f.length();
                                byte[] data = bytes != null && bytes.length >= len ? bytes : null;
                                if (data == null) {
                                    bytes = data = new byte[len];
                                }
                                f.readFully(data, 0, len);
                                image = BitmapFactory.decodeByteArray(data, 0, len, opts);
                            } else {
                                FileInputStream is = new FileInputStream(cacheFileFinal);
                                image = BitmapFactory.decodeStream(is, null, opts);
                                is.close();
                            }
                        }
                    }
                    if (image == null) {
                        if (canDeleteFile && (cacheFileFinal.length() == 0 || cacheImage.filter == null)) {
                            cacheFileFinal.delete();
                        }
                    } else {
                        boolean blured = false;
                        if (cacheImage.filter != null) {
                            float bitmapW = image.getWidth();
                            float bitmapH = image.getHeight();
                            if (!opts.inPurgeable && w_filter != 0 && bitmapW != w_filter && bitmapW > w_filter + 20) {
                                float scaleFactor = bitmapW / w_filter;
                                Bitmap scaledBitmap = Bitmap.createScaledBitmap(image, (int) w_filter, (int) (bitmapH / scaleFactor), true);
                                if (image != scaledBitmap) {
                                    image.recycle();
                                    image = scaledBitmap;
                                }
                            }
                            if (image != null && blur && bitmapH < 100 && bitmapW < 100) {
                                Utilities.blurBitmap(image, 3, opts.inPurgeable ? 0 : 1);
                                blured = true;
                            }
                        }
                        if (!blured && opts.inPurgeable) {
                            Utilities.pinBitmap(image);
                        }
                        if (runtimeHack != null && image != null) {
                            runtimeHack.trackFree(image.getRowBytes() * image.getHeight());
                        }
                    }
                } catch (Throwable e) {
                    //don't promt
                }
            }
            Thread.interrupted();
            onPostExecute(image != null ? new BitmapDrawable(image) : null);
        }

        private void onPostExecute(final BitmapDrawable bitmapDrawable) {
            AndroidUtilities.runOnUIThread(new Runnable() {
                @Override
                public void run() {
                    BitmapDrawable toSet = null;
                    if (bitmapDrawable != null) {
                        toSet = memCache.get(cacheImage.key);
                        if (toSet == null) {
                            memCache.put(cacheImage.key, bitmapDrawable);
                            toSet = bitmapDrawable;
                        } else {
                            Bitmap image = bitmapDrawable.getBitmap();
                            if (runtimeHack != null) {
                                runtimeHack.trackAlloc(image.getRowBytes() * image.getHeight());
                            }
                            image.recycle();
                        }
                    }
                    final BitmapDrawable toSetFinal = toSet;
                    imageLoadQueue.postRunnable(new Runnable() {
                        @Override
                        public void run() {
                            cacheImage.setImageAndClear(toSetFinal);
                        }
                    });
                }
            });
        }

        public void cancel() {
            synchronized (sync) {
                try {
                    isCancelled = true;
                    if (runningThread != null) {
                        runningThread.interrupt();
                    }
                } catch (Exception e) {
                    //don't promt
                }
            }
        }
    }

    public class VMRuntimeHack {
        private Object runtime = null;
        private Method trackAllocation = null;
        private Method trackFree = null;

        public boolean trackAlloc(long size) {
            if (runtime == null) {
                return false;
            }
            try {
                Object res = trackAllocation.invoke(runtime, size);
                return (res instanceof Boolean) ? (Boolean) res : true;
            } catch (Exception e) {
                return false;
            }
        }

        public boolean trackFree(long size) {
            if (runtime == null) {
                return false;
            }
            try {
                Object res = trackFree.invoke(runtime, size);
                return (res instanceof Boolean) ? (Boolean) res : true;
            } catch (Exception e) {
                return false;
            }
        }

        @SuppressWarnings("unchecked")
        public VMRuntimeHack() {
            try {
                Class cl = Class.forName("dalvik.system.VMRuntime");
                Method getRt = cl.getMethod("getRuntime", new Class[0]);
                Object[] objects = new Object[0];
                runtime = getRt.invoke(null, objects);
                trackAllocation = cl.getMethod("trackExternalAllocation", new Class[]{long.class});
                trackFree = cl.getMethod("trackExternalFree", new Class[]{long.class});
            } catch (Exception e) {
                FileLog.e("tmessages", e);
                runtime = null;
                trackAllocation = null;
                trackFree = null;
            }
        }
    }

    private class CacheImage {
        protected String key;
        protected String url;
        protected String filter;
        protected String ext;
        protected TLObject location;

        protected File finalFilePath;
        protected File tempFilePath;
        protected boolean thumb;

        protected String httpUrl;
        protected HttpImageTask httpTask;
        protected CacheOutTask cacheTask;

        protected ArrayList<ImageReceiver> imageReceiverArray = new ArrayList<>();

        public void addImageReceiver(ImageReceiver imageReceiver) {
            boolean exist = false;
            for (ImageReceiver v : imageReceiverArray) {
                if (v == imageReceiver) {
                    exist = true;
                    break;
                }
            }
            if (!exist) {
                imageReceiverArray.add(imageReceiver);
                imageLoadingByTag.put(imageReceiver.getTag(thumb), this);
            }
        }

        public void removeImageReceiver(ImageReceiver imageReceiver) {
            for (int a = 0; a < imageReceiverArray.size(); a++) {
                ImageReceiver obj = imageReceiverArray.get(a);
                if (obj == null || obj == imageReceiver) {
                    imageReceiverArray.remove(a);
                    if (obj != null) {
                        imageLoadingByTag.remove(obj.getTag(thumb));
                    }
                    a--;
                }
            }
            if (imageReceiverArray.size() == 0) {
                for (ImageReceiver receiver : imageReceiverArray) {
                    imageLoadingByTag.remove(receiver.getTag(thumb));
                }
                imageReceiverArray.clear();
                if (location != null) {
                    if (location instanceof TLRPC.FileLocation) {
                        FileLoader.getInstance().cancelLoadFile((TLRPC.FileLocation) location, ext);
                    } else if (location instanceof TLRPC.Document) {
                        FileLoader.getInstance().cancelLoadFile((TLRPC.Document) location);
                    }
                }
                if (cacheTask != null) {
                    if (thumb) {
                        cacheThumbOutQueue.cancelRunnable(cacheTask);
                    } else {
                        cacheOutQueue.cancelRunnable(cacheTask);
                    }
                    cacheTask.cancel();
                    cacheTask = null;
                }
                if (httpTask != null) {
                    httpTasks.remove(httpTask);
                    httpTask.cancel(true);
                    httpTask = null;
                }
                if (url != null) {
                    imageLoadingByUrl.remove(url);
                }
                if (key != null) {
                    imageLoadingByKeys.remove(key);
                }
            }
        }

        public void setImageAndClear(final BitmapDrawable image) {
            if (image != null) {
                final ArrayList<ImageReceiver> finalImageReceiverArray = new ArrayList<>(imageReceiverArray);
                AndroidUtilities.runOnUIThread(new Runnable() {
                    @Override
                    public void run() {
                        for (ImageReceiver imgView : finalImageReceiverArray) {
                            imgView.setImageBitmapByKey(image, key, thumb, false);
                        }
                    }
                });
            }
            for (ImageReceiver imageReceiver : imageReceiverArray) {
                imageLoadingByTag.remove(imageReceiver.getTag(thumb));
            }
            imageReceiverArray.clear();
            if (url != null) {
                imageLoadingByUrl.remove(url);
            }
            if (key != null) {
                imageLoadingByKeys.remove(key);
            }
        }
    }

    private static volatile ImageLoader Instance = null;

    public static ImageLoader getInstance() {
        ImageLoader localInstance = Instance;
        if (localInstance == null) {
            synchronized (ImageLoader.class) {
                localInstance = Instance;
                if (localInstance == null) {
                    Instance = localInstance = new ImageLoader();
                }
            }
        }
        return localInstance;
    }

    public ImageLoader() {
        int cacheSize = Math.min(15, ((ActivityManager) ApplicationLoader.applicationContext.getSystemService(Context.ACTIVITY_SERVICE)).getMemoryClass() / 7) * 1024 * 1024;

        if (Build.VERSION.SDK_INT < 11) {
            runtimeHack = new VMRuntimeHack();
            cacheSize = 1024 * 1024 * 3;
        }
        memCache = new LruCache(cacheSize) {
            @Override
            protected int sizeOf(String key, BitmapDrawable bitmap) {
                Bitmap b = bitmap.getBitmap();
                if (Build.VERSION.SDK_INT < 12) {
                    return b.getRowBytes() * b.getHeight();
                } else {
                    return b.getByteCount();
                }
            }

            @Override
            protected void entryRemoved(boolean evicted, String key, final BitmapDrawable oldBitmap, BitmapDrawable newBitmap) {
                if (ignoreRemoval != null && key != null && ignoreRemoval.equals(key)) {
                    return;
                }
                final Integer count = bitmapUseCounts.get(key);
                if (count == null || count == 0) {
                    Bitmap b = oldBitmap.getBitmap();
                    if (runtimeHack != null) {
                        runtimeHack.trackAlloc(b.getRowBytes() * b.getHeight());
                    }
                    if (!b.isRecycled()) {
                        b.recycle();
                    }
                }
            }
        };

        FileLoader.getInstance().setDelegate(new FileLoader.FileLoaderDelegate() {
            @Override
            public void fileUploadProgressChanged(final String location, final float progress, final boolean isEncrypted) {
                fileProgresses.put(location, progress);
                long currentTime = System.currentTimeMillis();
                if (lastProgressUpdateTime == 0 || lastProgressUpdateTime < currentTime - 500) {
                    lastProgressUpdateTime = currentTime;

                    AndroidUtilities.runOnUIThread(new Runnable() {
                        @Override
                        public void run() {
                            NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileUploadProgressChanged, location, progress, isEncrypted);
                        }
                    });
                }
            }

            @Override
            public void fileDidUploaded(final String location, final TLRPC.InputFile inputFile, final TLRPC.InputEncryptedFile inputEncryptedFile, final byte[] key, final byte[] iv) {
                Utilities.stageQueue.postRunnable(new Runnable() {
                    @Override
                    public void run() {
                        AndroidUtilities.runOnUIThread(new Runnable() {
                            @Override
                            public void run() {
                                NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileDidUpload, location, inputFile, inputEncryptedFile, key, iv);
                            }
                        });
                        fileProgresses.remove(location);
                    }
                });
            }

            @Override
            public void fileDidFailedUpload(final String location, final boolean isEncrypted) {
                Utilities.stageQueue.postRunnable(new Runnable() {
                    @Override
                    public void run() {
                        AndroidUtilities.runOnUIThread(new Runnable() {
                            @Override
                            public void run() {
                                NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileDidFailUpload, location, isEncrypted);
                            }
                        });
                        fileProgresses.remove(location);
                    }
                });
            }

            @Override
            public void fileDidLoaded(final String location, final File finalFile, final int type) {
                fileProgresses.remove(location);
                AndroidUtilities.runOnUIThread(new Runnable() {
                    @Override
                    public void run() {
                        if (location != null) {
                            if (MediaController.getInstance().canSaveToGallery() && telegramPath != null && finalFile != null && finalFile.exists() && (location.endsWith(".mp4") || location.endsWith(".jpg"))) {
                                if (finalFile.toString().startsWith(telegramPath.toString())) {
                                    AndroidUtilities.addMediaToGallery(finalFile.toString());
                                }
                            }
                        }
                        ImageLoader.this.fileDidLoaded(location, finalFile, type);
                        NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileDidLoaded, location);
                    }
                });
            }

            @Override
            public void fileDidFailedLoad(final String location, final int canceled) {
                fileProgresses.remove(location);
                AndroidUtilities.runOnUIThread(new Runnable() {
                    @Override
                    public void run() {
                        ImageLoader.this.fileDidFailedLoad(location, canceled);
                        NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileDidFailedLoad, location, canceled);
                    }
                });
            }

            @Override
            public void fileLoadProgressChanged(final String location, final float progress) {
                fileProgresses.put(location, progress);
                long currentTime = System.currentTimeMillis();
                if (lastProgressUpdateTime == 0 || lastProgressUpdateTime < currentTime - 500) {
                    lastProgressUpdateTime = currentTime;
                    AndroidUtilities.runOnUIThread(new Runnable() {
                        @Override
                        public void run() {
                            NotificationCenter.getInstance().postNotificationName(NotificationCenter.FileLoadProgressChanged, location, progress);
                        }
                    });
                }
            }
        });

        BroadcastReceiver receiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context arg0, Intent intent) {
                FileLog.e("tmessages", "file system changed");
                Runnable r = new Runnable() {
                    public void run() {
                        FileLoader.getInstance().setMediaDirs(createMediaPaths());
                    }
                };
                if (Intent.ACTION_MEDIA_UNMOUNTED.equals(intent.getAction())) {
                    AndroidUtilities.runOnUIThread(r, 1000);
                } else {
                    r.run();
                }
            }
        };

        IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
        filter.addAction(Intent.ACTION_MEDIA_CHECKING);
        filter.addAction(Intent.ACTION_MEDIA_EJECT);
        filter.addAction(Intent.ACTION_MEDIA_MOUNTED);
        filter.addAction(Intent.ACTION_MEDIA_NOFS);
        filter.addAction(Intent.ACTION_MEDIA_REMOVED);
        filter.addAction(Intent.ACTION_MEDIA_SHARED);
        filter.addAction(Intent.ACTION_MEDIA_UNMOUNTABLE);
        filter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
        filter.addDataScheme("file");
        ApplicationLoader.applicationContext.registerReceiver(receiver, filter);

        FileLoader.getInstance().setMediaDirs(createMediaPaths());
    }

    private HashMap<Integer, File> createMediaPaths() {
        HashMap<Integer, File> mediaDirs = new HashMap<>();
        File cachePath = AndroidUtilities.getCacheDir();
        if (!cachePath.isDirectory()) {
            try {
                cachePath.mkdirs();
            } catch (Exception e) {
                FileLog.e("tmessages", e);
            }
        }
        try {
            new File(cachePath, ".nomedia").createNewFile();
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }

        mediaDirs.put(FileLoader.MEDIA_DIR_CACHE, cachePath);
        FileLog.e("tmessages", "cache path = " + cachePath);

        try {
            if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
                telegramPath = new File(Environment.getExternalStorageDirectory(), "Telegram");
                telegramPath.mkdirs();

                boolean canRename = false;

                try {
                    for (int a = 0; a < 5; a++) {
                        File srcFile = new File(cachePath, "temp.file");
                        srcFile.createNewFile();
                        File dstFile = new File(telegramPath, "temp.file");
                        canRename = srcFile.renameTo(dstFile);
                        srcFile.delete();
                        dstFile.delete();
                        if (canRename) {
                            break;
                        }
                    }
                } catch (Exception e) {
                    FileLog.e("tmessages", e);
                }

                if (canRename) {
                    if (telegramPath.isDirectory()) {
                        try {
                            File imagePath = new File(telegramPath, "Telegram Images");
                            imagePath.mkdir();
                            if (imagePath.isDirectory()) {
                                mediaDirs.put(FileLoader.MEDIA_DIR_IMAGE, imagePath);
                                FileLog.e("tmessages", "image path = " + imagePath);
                            }
                        } catch (Exception e) {
                            FileLog.e("tmessages", e);
                        }

                        try {
                            File videoPath = new File(telegramPath, "Telegram Video");
                            videoPath.mkdir();
                            if (videoPath.isDirectory()) {
                                mediaDirs.put(FileLoader.MEDIA_DIR_VIDEO, videoPath);
                                FileLog.e("tmessages", "video path = " + videoPath);
                            }
                        } catch (Exception e) {
                            FileLog.e("tmessages", e);
                        }

                        try {
                            File audioPath = new File(telegramPath, "Telegram Audio");
                            audioPath.mkdir();
                            if (audioPath.isDirectory()) {
                                new File(audioPath, ".nomedia").createNewFile();
                                mediaDirs.put(FileLoader.MEDIA_DIR_AUDIO, audioPath);
                                FileLog.e("tmessages", "audio path = " + audioPath);
                            }
                        } catch (Exception e) {
                            FileLog.e("tmessages", e);
                        }

                        try {
                            File documentPath = new File(telegramPath, "Telegram Documents");
                            documentPath.mkdir();
                            if (documentPath.isDirectory()) {
                                new File(documentPath, ".nomedia").createNewFile();
                                mediaDirs.put(FileLoader.MEDIA_DIR_DOCUMENT, documentPath);
                                FileLog.e("tmessages", "documents path = " + documentPath);
                            }
                        } catch (Exception e) {
                            FileLog.e("tmessages", e);
                        }
                    }
                } else {
                    FileLog.e("tmessages", "this Android can't rename files");
                }
            }
            MediaController.getInstance().checkSaveToGalleryFiles();
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }

        return mediaDirs;
    }

    public Float getFileProgress(String location) {
        return fileProgresses.get(location);
    }

    private void performReplace(String oldKey, String newKey) {
        BitmapDrawable b = memCache.get(oldKey);
        if (b != null) {
            ignoreRemoval = oldKey;
            memCache.remove(oldKey);
            memCache.put(newKey, b);
            ignoreRemoval = null;
        }
        Integer val = bitmapUseCounts.get(oldKey);
        if (val != null) {
            bitmapUseCounts.put(newKey, val);
            bitmapUseCounts.remove(oldKey);
        }
    }

    public void incrementUseCount(String key) {
        Integer count = bitmapUseCounts.get(key);
        if (count == null) {
            bitmapUseCounts.put(key, 1);
        } else {
            bitmapUseCounts.put(key, count + 1);
        }
    }

    public boolean decrementUseCount(String key) {
        Integer count = bitmapUseCounts.get(key);
        if (count == null) {
            return true;
        }
        if (count == 1) {
            bitmapUseCounts.remove(key);
            return true;
        } else {
            bitmapUseCounts.put(key, count - 1);
        }
        return false;
    }

    public void removeImage(String key) {
        bitmapUseCounts.remove(key);
        memCache.remove(key);
    }

    public boolean isInCache(String key) {
        return memCache.get(key) != null;
    }

    public void clearMemory() {
        memCache.evictAll();
    }

    private void removeFromWaitingForThumb(Integer TAG) {
        String location = waitingForQualityThumbByTag.get(TAG);
        if (location != null) {
            ThumbGenerateInfo info = waitingForQualityThumb.get(location);
            if (info != null) {
                info.count--;
                if (info.count == 0) {
                    waitingForQualityThumb.remove(location);
                }
            }
            waitingForQualityThumbByTag.remove(TAG);
        }
    }

    public void cancelLoadingForImageReceiver(final ImageReceiver imageReceiver, final int type) {
        if (imageReceiver == null) {
            return;
        }
        imageLoadQueue.postRunnable(new Runnable() {
            @Override
            public void run() {
                int start = 0;
                int count = 2;
                if (type == 1) {
                    count = 1;
                } else if (type == 2) {
                    start = 1;
                }
                for (int a = start; a < count; a++) {
                    Integer TAG = imageReceiver.getTag(a == 0);
                    if (a == 0) {
                        removeFromWaitingForThumb(TAG);
                    }
                    if (TAG != null) {
                        CacheImage ei = imageLoadingByTag.get(TAG);
                        if (ei != null) {
                            ei.removeImageReceiver(imageReceiver);
                        }
                    }
                }
            }
        });
    }

    public BitmapDrawable getImageFromMemory(String key) {
        return memCache.get(key);
    }

    public BitmapDrawable getImageFromMemory(TLObject fileLocation, String httpUrl, String filter) {
        if (fileLocation == null && httpUrl == null) {
            return null;
        }
        String key = null;
        if (httpUrl != null) {
            key = Utilities.MD5(httpUrl);
        } else {
            if (fileLocation instanceof TLRPC.FileLocation) {
                TLRPC.FileLocation location = (TLRPC.FileLocation) fileLocation;
                key = location.volume_id + "_" + location.local_id;
            } else if (fileLocation instanceof TLRPC.Document) {
                TLRPC.Document location = (TLRPC.Document) fileLocation;
                key = location.dc_id + "_" + location.id;
            }
        }
        if (filter != null) {
            key += "@" + filter;
        }
        return memCache.get(key);
    }

    public void replaceImageInCache(final String oldKey, final String newKey, final TLRPC.FileLocation newLocation) {
        AndroidUtilities.runOnUIThread(new Runnable() {
            @Override
            public void run() {
                ArrayList<String> arr = memCache.getFilterKeys(oldKey);
                if (arr != null) {
                    for (String filter : arr) {
                        String oldK = oldKey + "@" + filter;
                        String newK = newKey + "@" + filter;
                        performReplace(oldK, newK);
                        NotificationCenter.getInstance().postNotificationName(NotificationCenter.didReplacedPhotoInMemCache, oldK, newK, newLocation);
                    }
                } else {
                    performReplace(oldKey, newKey);
                    NotificationCenter.getInstance().postNotificationName(NotificationCenter.didReplacedPhotoInMemCache, oldKey, newKey, newLocation);
                }
            }
        });
    }

    public void putImageToCache(BitmapDrawable bitmap, String key) {
        memCache.put(key, bitmap);
    }

    private void generateThumb(int mediaType, File originalPath, TLRPC.FileLocation thumbLocation, String filter) {
        if (mediaType != FileLoader.MEDIA_DIR_IMAGE && mediaType != FileLoader.MEDIA_DIR_VIDEO && mediaType != FileLoader.MEDIA_DIR_DOCUMENT || originalPath == null || thumbLocation == null) {
            return;
        }
        String name = FileLoader.getAttachFileName(thumbLocation);
        ThumbGenerateTask task = thumbGenerateTasks.get(name);
        if (task == null) {
            task = new ThumbGenerateTask(mediaType, originalPath, thumbLocation, filter);
            thumbGeneratingQueue.postRunnable(task);
        }
    }

    private void createLoadOperationForImageReceiver(final ImageReceiver imageReceiver, final String key, final String url, final String ext, final TLObject imageLocation, final String httpLocation, final String filter, final int size, final boolean cacheOnly, final int thumb) {
        if (imageReceiver == null || url == null || key == null) {
            return;
        }
        Integer TAG = imageReceiver.getTag(thumb != 0);
        if (TAG == null) {
            imageReceiver.setTag(TAG = lastImageNum, thumb != 0);
            lastImageNum++;
            if (lastImageNum == Integer.MAX_VALUE) {
                lastImageNum = 0;
            }
        }

        final Integer finalTag = TAG;
        final boolean finalIsNeedsQualityThumb = imageReceiver.isNeedsQualityThumb();
        final MessageObject parentMessageObject = imageReceiver.getParentMessageObject();
        final boolean shouldGenerateQualityThumb = imageReceiver.isShouldGenerateQualityThumb();
        imageLoadQueue.postRunnable(new Runnable() {
            @Override
            public void run() {
                boolean added = false;
                if (thumb != 2) {
                    CacheImage alreadyLoadingUrl = imageLoadingByUrl.get(url);
                    CacheImage alreadyLoadingCache = imageLoadingByKeys.get(key);
                    CacheImage alreadyLoadingImage = imageLoadingByTag.get(finalTag);
                    if (alreadyLoadingImage != null) {
                        if (alreadyLoadingImage == alreadyLoadingUrl || alreadyLoadingImage == alreadyLoadingCache) {
                            added = true;
                        } else {
                            alreadyLoadingImage.removeImageReceiver(imageReceiver);
                        }
                    }

                    if (!added && alreadyLoadingCache != null) {
                        alreadyLoadingCache.addImageReceiver(imageReceiver);
                        added = true;
                    }
                    if (!added && alreadyLoadingUrl != null) {
                        alreadyLoadingUrl.addImageReceiver(imageReceiver);
                        added = true;
                    }
                }

                if (!added) {
                    boolean onlyCache = false;
                    boolean isQuality = false;
                    File cacheFile = null;

                    if (httpLocation != null) {
                        if (!httpLocation.startsWith("http")) {
                            onlyCache = true;
                            if (httpLocation.startsWith("thumb://")) {
                                int idx = httpLocation.indexOf(":", 8);
                                if (idx >= 0) {
                                    cacheFile = new File(httpLocation.substring(idx + 1));
                                }
                            } else if (httpLocation.startsWith("vthumb://")) {
                                int idx = httpLocation.indexOf(":", 9);
                                if (idx >= 0) {
                                    cacheFile = new File(httpLocation.substring(idx + 1));
                                }
                            } else {
                                cacheFile = new File(httpLocation);
                            }
                        }
                    } else if (thumb != 0) {
                        if (finalIsNeedsQualityThumb) {
                            cacheFile = new File(FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_CACHE), "q_" + url);
                            if (!cacheFile.exists()) {
                                cacheFile = null;
                            }
                        }

                        if (parentMessageObject != null) {
                            File attachPath = null;
                            if (parentMessageObject.messageOwner.attachPath != null && parentMessageObject.messageOwner.attachPath.length() > 0) {
                                attachPath = new File(parentMessageObject.messageOwner.attachPath);
                                if (!attachPath.exists()) {
                                    attachPath = null;
                                }
                            }
                            if (attachPath == null) {
                                attachPath = FileLoader.getPathToMessage(parentMessageObject.messageOwner);
                            }
                            if (finalIsNeedsQualityThumb && cacheFile == null) {
                                String location = parentMessageObject.getFileName();
                                ThumbGenerateInfo info = waitingForQualityThumb.get(location);
                                if (info == null) {
                                    info = new ThumbGenerateInfo();
                                    info.fileLocation = (TLRPC.TL_fileLocation) imageLocation;
                                    info.filter = filter;
                                    waitingForQualityThumb.put(location, info);
                                }
                                info.count++;
                                waitingForQualityThumbByTag.put(finalTag, location);
                            }
                            if (attachPath.exists() && shouldGenerateQualityThumb) {
                                generateThumb(parentMessageObject.getFileType(), attachPath, (TLRPC.TL_fileLocation) imageLocation, filter);
                            }
                        }
                    }

                    if (thumb != 2) {
                        if (cacheFile == null) {
                            if (cacheOnly || size == 0 || httpLocation != null) {
                                cacheFile = new File(FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_CACHE), url);
                            } else {
                                cacheFile = new File(FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_IMAGE), url);
                            }
                        }

                        CacheImage img = new CacheImage();
                        img.thumb = thumb != 0;
                        img.key = key;
                        img.filter = filter;
                        img.httpUrl = httpLocation;
                        img.ext = ext;
                        img.addImageReceiver(imageReceiver);
                        if (onlyCache || cacheFile.exists()) {
                            img.finalFilePath = cacheFile;
                            img.cacheTask = new CacheOutTask(img);
                            imageLoadingByKeys.put(key, img);
                            if (thumb != 0) {
                                cacheThumbOutQueue.postRunnable(img.cacheTask);
                            } else {
                                cacheOutQueue.postRunnable(img.cacheTask);
                            }
                        } else {
                            img.url = url;
                            img.location = imageLocation;
                            imageLoadingByUrl.put(url, img);
                            if (httpLocation == null) {
                                if (imageLocation instanceof TLRPC.FileLocation) {
                                    TLRPC.FileLocation location = (TLRPC.FileLocation) imageLocation;
                                    FileLoader.getInstance().loadFile(location, ext, size, size == 0 || location.key != null || cacheOnly);
                                } else if (imageLocation instanceof TLRPC.Document) {
                                    FileLoader.getInstance().loadFile((TLRPC.Document) imageLocation, true, true);
                                }
                            } else {
                                String file = Utilities.MD5(httpLocation);
                                File cacheDir = FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_CACHE);
                                img.tempFilePath = new File(cacheDir, file + "_temp.jpg");
                                img.finalFilePath = cacheFile;
                                img.httpTask = new HttpImageTask(img, size);
                                httpTasks.add(img.httpTask);
                                runHttpTasks(false);
                            }
                        }
                    }
                }
            }
        });
    }

    public void loadImageForImageReceiver(ImageReceiver imageReceiver) {
        if (imageReceiver == null) {
            return;
        }

        String key = imageReceiver.getKey();
        if (key != null) {
            BitmapDrawable bitmapDrawable = memCache.get(key);
            if (bitmapDrawable != null) {
                cancelLoadingForImageReceiver(imageReceiver, 0);
                if (!imageReceiver.isForcePreview()) {
                    imageReceiver.setImageBitmapByKey(bitmapDrawable, key, false, true);
                    return;
                }
            }
        }
        boolean thumbSet = false;
        String thumbKey = imageReceiver.getThumbKey();
        if (thumbKey != null) {
            BitmapDrawable bitmapDrawable = memCache.get(thumbKey);
            if (bitmapDrawable != null) {
                imageReceiver.setImageBitmapByKey(bitmapDrawable, thumbKey, true, true);
                cancelLoadingForImageReceiver(imageReceiver, 1);
                thumbSet = true;
            }
        }

        TLRPC.FileLocation thumbLocation = imageReceiver.getThumbLocation();
        TLObject imageLocation = imageReceiver.getImageLocation();
        String httpLocation = imageReceiver.getHttpImageLocation();

        boolean saveImageToCache = false;

        String url = null;
        String thumbUrl = null;
        key = null;
        thumbKey = null;
        String ext = imageReceiver.getExt();
        if (ext == null) {
            ext = "jpg";
        }
        if (httpLocation != null) {
            key = Utilities.MD5(httpLocation);
            url = key + "." + getHttpUrlExtension(httpLocation);
        } else if (imageLocation != null) {
            if (imageLocation instanceof TLRPC.FileLocation) {
                TLRPC.FileLocation location = (TLRPC.FileLocation) imageLocation;
                key = location.volume_id + "_" + location.local_id;
                url = key + "." + ext;
                if (imageReceiver.getExt() != null || location.key != null || location.volume_id == Integer.MIN_VALUE && location.local_id < 0) {
                    saveImageToCache = true;
                }
            } else if (imageLocation instanceof TLRPC.Document) {
                TLRPC.Document location = (TLRPC.Document) imageLocation;
                if (location.id == 0 || location.dc_id == 0) {
                    return;
                }
                key = location.dc_id + "_" + location.id;
                String docExt = FileLoader.getDocumentFileName(location);
                int idx;
                if (docExt == null || (idx = docExt.lastIndexOf(".")) == -1) {
                    docExt = "";
                } else {
                    docExt = docExt.substring(idx);
                    if (docExt.length() <= 1) {
                        docExt = "";
                    }
                }
                url = key + docExt;
                if (thumbKey != null) {
                    thumbUrl = thumbKey + "." + ext;
                }
                saveImageToCache = true;
            }
            if (imageLocation == thumbLocation) {
                imageLocation = null;
                key = null;
                url = null;
            }
        }

        if (thumbLocation != null) {
            thumbKey = thumbLocation.volume_id + "_" + thumbLocation.local_id;
            thumbUrl = thumbKey + "." + ext;
        }

        String filter = imageReceiver.getFilter();
        String thumbFilter = imageReceiver.getThumbFilter();
        if (key != null && filter != null) {
            key += "@" + filter;
        }
        if (thumbKey != null && thumbFilter != null) {
            thumbKey += "@" + thumbFilter;
        }

        if (httpLocation != null) {
            createLoadOperationForImageReceiver(imageReceiver, key, url, ext, null, httpLocation, filter, 0, true, 0);
        } else {
            createLoadOperationForImageReceiver(imageReceiver, thumbKey, thumbUrl, ext, thumbLocation, null, thumbFilter, 0, true, thumbSet ? 2 : 1);
            createLoadOperationForImageReceiver(imageReceiver, key, url, ext, imageLocation, null, filter, imageReceiver.getSize(), saveImageToCache || imageReceiver.getCacheOnly(), 0);
        }
    }

    private void httpFileLoadError(final String location) {
        imageLoadQueue.postRunnable(new Runnable() {
            @Override
            public void run() {
                CacheImage img = imageLoadingByUrl.get(location);
                if (img == null) {
                    return;
                }
                HttpImageTask oldTask = img.httpTask;
                img.httpTask = new HttpImageTask(oldTask.cacheImage, oldTask.imageSize);
                httpTasks.add(img.httpTask);
                runHttpTasks(false);
            }
        });
    }

    private void fileDidLoaded(final String location, final File finalFile, final int type) {
        imageLoadQueue.postRunnable(new Runnable() {
            @Override
            public void run() {
                ThumbGenerateInfo info = waitingForQualityThumb.get(location);
                if (info != null) {
                    generateThumb(type, finalFile, info.fileLocation, info.filter);
                    waitingForQualityThumb.remove(location);
                }
                CacheImage img = imageLoadingByUrl.get(location);
                if (img == null) {
                    return;
                }
                imageLoadingByUrl.remove(location);
                CacheOutTask task = null;
                for (ImageReceiver imageReceiver : img.imageReceiverArray) {
                    CacheImage cacheImage = imageLoadingByKeys.get(img.key);
                    if (cacheImage == null) {
                        cacheImage = new CacheImage();
                        cacheImage.finalFilePath = finalFile;
                        cacheImage.key = img.key;
                        cacheImage.httpUrl = img.httpUrl;
                        cacheImage.thumb = img.thumb;
                        cacheImage.ext = img.ext;
                        cacheImage.cacheTask = task = new CacheOutTask(cacheImage);
                        cacheImage.filter = img.filter;
                        imageLoadingByKeys.put(cacheImage.key, cacheImage);
                    }
                    cacheImage.addImageReceiver(imageReceiver);
                }
                if (task != null) {
                    if (img.thumb) {
                        cacheThumbOutQueue.postRunnable(task);
                    } else {
                        cacheOutQueue.postRunnable(task);
                    }
                }
            }
        });
    }

    private void fileDidFailedLoad(final String location, int canceled) {
        if (canceled == 1) {
            return;
        }
        imageLoadQueue.postRunnable(new Runnable() {
            @Override
            public void run() {
                CacheImage img = imageLoadingByUrl.get(location);
                if (img != null) {
                    img.setImageAndClear(null);
                }
            }
        });
    }

    private void runHttpTasks(boolean complete) {
        if (complete) {
            currentHttpTasksCount--;
        }
        while (currentHttpTasksCount < 1 && !httpTasks.isEmpty()) {
            HttpImageTask task = httpTasks.poll();
            if (android.os.Build.VERSION.SDK_INT >= 11) {
                task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, null, null, null);
            } else {
                task.execute(null, null, null);
            }
            currentHttpTasksCount++;
        }
    }

    public void loadHttpFile(String url, String extension) {
        if (url == null || url.length() == 0 || httpFileLoadTasksByKeys.containsKey(url)) {
            return;
        }
        String ext = extension;
        if (ext == null) {
            int idx = url.lastIndexOf(".");
            if (idx != -1) {
                ext = url.substring(idx + 1);
            }
            if (ext == null || ext.length() == 0 || ext.length() > 4) {
                ext = "jpg";
            }
        }
        File file = new File(FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_CACHE), Utilities.MD5(url) + "_temp." + ext);
        file.delete();

        HttpFileTask task = new HttpFileTask(url, file, ext);
        httpFileLoadTasks.add(task);
        httpFileLoadTasksByKeys.put(url, task);
        runHttpFileLoadTasks(null, 0);
    }

    public void cancelLoadHttpFile(String url) {
        HttpFileTask task = httpFileLoadTasksByKeys.get(url);
        if (task != null) {
            task.cancel(true);
            httpFileLoadTasksByKeys.remove(url);
            httpFileLoadTasks.remove(task);
        }
        Runnable runnable = retryHttpsTasks.get(url);
        if (runnable != null) {
            AndroidUtilities.cancelRunOnUIThread(runnable);
        }
        runHttpFileLoadTasks(null, 0);
    }

    private void runHttpFileLoadTasks(final HttpFileTask oldTask, final int reason) {
        AndroidUtilities.runOnUIThread(new Runnable() {
            @Override
            public void run() {
                if (oldTask != null) {
                    currentHttpFileLoadTasksCount--;
                }
                if (oldTask != null) {
                    if (reason == 1) {
                        if (oldTask.canRetry) {
                            final HttpFileTask newTask = new HttpFileTask(oldTask.url, oldTask.tempFile, oldTask.ext);
                            Runnable runnable = new Runnable() {
                                @Override
                                public void run() {
                                    httpFileLoadTasks.add(newTask);
                                    runHttpFileLoadTasks(null, 0);
                                }
                            };
                            retryHttpsTasks.put(oldTask.url, runnable);
                            AndroidUtilities.runOnUIThread(runnable, 1000);
                        } else {
                            NotificationCenter.getInstance().postNotificationName(NotificationCenter.httpFileDidFailedLoad, oldTask.url);
                        }
                    } else if (reason == 2) {
                        httpFileLoadTasksByKeys.remove(oldTask.url);
                        File file = new File(FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_CACHE), Utilities.MD5(oldTask.url) + "." + oldTask.ext);
                        String result = oldTask.tempFile.renameTo(file) ? file.toString() : oldTask.tempFile.toString();
                        NotificationCenter.getInstance().postNotificationName(NotificationCenter.httpFileDidLoaded, oldTask.url, result);
                    }
                }
                while (currentHttpFileLoadTasksCount < 2 && !httpFileLoadTasks.isEmpty()) {
                    HttpFileTask task = httpFileLoadTasks.poll();
                    if (android.os.Build.VERSION.SDK_INT >= 11) {
                        task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, null, null, null);
                    } else {
                        task.execute(null, null, null);
                    }
                    currentHttpFileLoadTasksCount++;
                }
            }
        });
    }

    public static Bitmap loadBitmap(String path, Uri uri, float maxWidth, float maxHeight, boolean useMaxScale) {
        BitmapFactory.Options bmOptions = new BitmapFactory.Options();
        bmOptions.inJustDecodeBounds = true;
        FileDescriptor fileDescriptor = null;
        ParcelFileDescriptor parcelFD = null;

        if (path == null && uri != null && uri.getScheme() != null) {
            String imageFilePath = null;
            if (uri.getScheme().contains("file")) {
                path = uri.getPath();
            } else {
                try {
                    path = AndroidUtilities.getPath(uri);
                } catch (Throwable e) {
                    FileLog.e("tmessages", e);
                }
            }
        }

        if (path != null) {
            BitmapFactory.decodeFile(path, bmOptions);
        } else if (uri != null) {
            boolean error = false;
            try {
                parcelFD = ApplicationLoader.applicationContext.getContentResolver().openFileDescriptor(uri, "r");
                fileDescriptor = parcelFD.getFileDescriptor();
                BitmapFactory.decodeFileDescriptor(fileDescriptor, null, bmOptions);
            } catch (Throwable e) {
                FileLog.e("tmessages", e);
                return null;
            }
        }
        float photoW = bmOptions.outWidth;
        float photoH = bmOptions.outHeight;
        float scaleFactor = useMaxScale ? Math.max(photoW / maxWidth, photoH / maxHeight) : Math.min(photoW / maxWidth, photoH / maxHeight);
        if (scaleFactor < 1) {
            scaleFactor = 1;
        }
        bmOptions.inJustDecodeBounds = false;
        bmOptions.inSampleSize = (int) scaleFactor;

        String exifPath = null;
        if (path != null) {
            exifPath = path;
        } else if (uri != null) {
            exifPath = AndroidUtilities.getPath(uri);
        }

        Matrix matrix = null;

        if (exifPath != null) {
            ExifInterface exif;
            try {
                exif = new ExifInterface(exifPath);
                int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
                matrix = new Matrix();
                switch (orientation) {
                    case ExifInterface.ORIENTATION_ROTATE_90:
                        matrix.postRotate(90);
                        break;
                    case ExifInterface.ORIENTATION_ROTATE_180:
                        matrix.postRotate(180);
                        break;
                    case ExifInterface.ORIENTATION_ROTATE_270:
                        matrix.postRotate(270);
                        break;
                }
            } catch (Throwable e) {
                FileLog.e("tmessages", e);
            }
        }

        Bitmap b = null;
        if (path != null) {
            try {
                b = BitmapFactory.decodeFile(path, bmOptions);
                if (b != null) {
                    b = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(), matrix, true);
                }
            } catch (Throwable e) {
                FileLog.e("tmessages", e);
                ImageLoader.getInstance().clearMemory();
                try {
                    if (b == null) {
                        b = BitmapFactory.decodeFile(path, bmOptions);
                    }
                    if (b != null) {
                        b = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(), matrix, true);
                    }
                } catch (Throwable e2) {
                    FileLog.e("tmessages", e2);
                }
            }
        } else if (uri != null) {
            try {
                b = BitmapFactory.decodeFileDescriptor(fileDescriptor, null, bmOptions);
                if (b != null) {
                    b = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(), matrix, true);
                }
            } catch (Throwable e) {
                FileLog.e("tmessages", e);
            } finally {
                try {
                    parcelFD.close();
                } catch (Throwable e) {
                    FileLog.e("tmessages", e);
                }
            }
        }

        return b;
    }

    public static void fillPhotoSizeWithBytes(TLRPC.PhotoSize photoSize) {
        if (photoSize == null || photoSize.bytes != null) {
            return;
        }
        File file = FileLoader.getPathToAttach(photoSize, true);
        try {
            RandomAccessFile f = new RandomAccessFile(file, "r");
            int len = (int) f.length();
            if (len < 20000) {
                photoSize.bytes = new byte[(int) f.length()];
                f.readFully(photoSize.bytes, 0, photoSize.bytes.length);
            }
        } catch (Throwable e) {
            FileLog.e("tmessages", e);
        }
    }

    private static TLRPC.PhotoSize scaleAndSaveImageInternal(Bitmap bitmap, int w, int h, float photoW, float photoH, float scaleFactor, int quality, boolean cache, boolean scaleAnyway) throws Exception {
        Bitmap scaledBitmap;
        if (scaleFactor > 1 || scaleAnyway) {
            scaledBitmap = Bitmap.createScaledBitmap(bitmap, w, h, true);
        } else {
            scaledBitmap = bitmap;
        }

        TLRPC.TL_fileLocation location = new TLRPC.TL_fileLocation();
        location.volume_id = Integer.MIN_VALUE;
        location.dc_id = Integer.MIN_VALUE;
        location.local_id = UserConfig.lastLocalId;
        UserConfig.lastLocalId--;
        TLRPC.PhotoSize size = new TLRPC.TL_photoSize();
        size.location = location;
        size.w = scaledBitmap.getWidth();
        size.h = scaledBitmap.getHeight();
        if (size.w <= 100 && size.h <= 100) {
            size.type = "s";
        } else if (size.w <= 320 && size.h <= 320) {
            size.type = "m";
        } else if (size.w <= 800 && size.h <= 800) {
            size.type = "x";
        } else if (size.w <= 1280 && size.h <= 1280) {
            size.type = "y";
        } else {
            size.type = "w";
        }

        String fileName = location.volume_id + "_" + location.local_id + ".jpg";
        final File cacheFile = new File(FileLoader.getInstance().getDirectory(FileLoader.MEDIA_DIR_CACHE), fileName);
        FileOutputStream stream = new FileOutputStream(cacheFile);
        scaledBitmap.compress(Bitmap.CompressFormat.JPEG, quality, stream);
        if (cache) {
            ByteArrayOutputStream stream2 = new ByteArrayOutputStream();
            scaledBitmap.compress(Bitmap.CompressFormat.JPEG, quality, stream2);
            size.bytes = stream2.toByteArray();
            size.size = size.bytes.length;
            stream2.close();
        } else {
            size.size = (int) stream.getChannel().size();
        }
        stream.close();
        if (scaledBitmap != bitmap) {
            scaledBitmap.recycle();
        }

        return size;
    }

    public static TLRPC.PhotoSize scaleAndSaveImage(Bitmap bitmap, float maxWidth, float maxHeight, int quality, boolean cache) {
        return scaleAndSaveImage(bitmap, maxWidth, maxHeight, quality, cache, 0, 0);
    }

    public static TLRPC.PhotoSize scaleAndSaveImage(Bitmap bitmap, float maxWidth, float maxHeight, int quality, boolean cache, int minWidth, int minHeight) {
        if (bitmap == null) {
            return null;
        }
        float photoW = bitmap.getWidth();
        float photoH = bitmap.getHeight();
        if (photoW == 0 || photoH == 0) {
            return null;
        }
        boolean scaleAnyway = false;
        float scaleFactor = Math.max(photoW / maxWidth, photoH / maxHeight);
        if (minWidth != 0 && minHeight != 0 && (photoW < minWidth || photoH < minHeight)) {
            if (photoW < minWidth && photoH > minHeight) {
                scaleFactor = photoW / minWidth;
            } else if (photoW > minWidth && photoH < minHeight) {
                scaleFactor = photoH / minHeight;
            } else {
                scaleFactor = Math.max(photoW / minWidth, photoH / minHeight);
            }
            scaleAnyway = true;
        }
        int w = (int) (photoW / scaleFactor);
        int h = (int) (photoH / scaleFactor);
        if (h == 0 || w == 0) {
            return null;
        }

        try {
            return scaleAndSaveImageInternal(bitmap, w, h, photoW, photoH, scaleFactor, quality, cache, scaleAnyway);
        } catch (Throwable e) {
            FileLog.e("tmessages", e);
            ImageLoader.getInstance().clearMemory();
            System.gc();
            try {
                return scaleAndSaveImageInternal(bitmap, w, h, photoW, photoH, scaleFactor, quality, cache, scaleAnyway);
            } catch (Throwable e2) {
                FileLog.e("tmessages", e2);
                return null;
            }
        }
    }

    public static String getHttpUrlExtension(String url) {
        String ext = null;
        int idx = url.lastIndexOf(".");
        if (idx != -1) {
            ext = url.substring(idx + 1);
        }
        if (ext == null || ext.length() == 0 || ext.length() > 4) {
            ext = "jpg";
        }
        return ext;
    }

    public static void saveMessageThumbs(TLRPC.Message message) {
        TLRPC.PhotoSize photoSize = null;
        if (message.media instanceof TLRPC.TL_messageMediaPhoto) {
            for (TLRPC.PhotoSize size : message.media.photo.sizes) {
                if (size instanceof TLRPC.TL_photoCachedSize) {
                    photoSize = size;
                    break;
                }
            }
        } else if (message.media instanceof TLRPC.TL_messageMediaVideo) {
            if (message.media.video.thumb instanceof TLRPC.TL_photoCachedSize) {
                photoSize = message.media.video.thumb;
            }
        } else if (message.media instanceof TLRPC.TL_messageMediaDocument) {
            if (message.media.document.thumb instanceof TLRPC.TL_photoCachedSize) {
                photoSize = message.media.document.thumb;
            }
        } else if (message.media instanceof TLRPC.TL_messageMediaWebPage) {
            if (message.media.webpage.photo != null) {
                for (TLRPC.PhotoSize size : message.media.webpage.photo.sizes) {
                    if (size instanceof TLRPC.TL_photoCachedSize) {
                        photoSize = size;
                        break;
                    }
                }
            }
        }
        if (photoSize != null && photoSize.bytes != null && photoSize.bytes.length != 0) {
            if (photoSize.location instanceof TLRPC.TL_fileLocationUnavailable) {
                photoSize.location = new TLRPC.TL_fileLocation();
                photoSize.location.volume_id = Integer.MIN_VALUE;
                photoSize.location.dc_id = Integer.MIN_VALUE;
                photoSize.location.local_id = UserConfig.lastLocalId;
                UserConfig.lastLocalId--;
            }
            File file = FileLoader.getPathToAttach(photoSize, true);
            if (!file.exists()) {
                try {
                    RandomAccessFile writeFile = new RandomAccessFile(file, "rws");
                    writeFile.write(photoSize.bytes);
                    writeFile.close();
                } catch (Exception e) {
                    FileLog.e("tmessages", e);
                }
            }
            TLRPC.TL_photoSize newPhotoSize = new TLRPC.TL_photoSize();
            newPhotoSize.w = photoSize.w;
            newPhotoSize.h = photoSize.h;
            newPhotoSize.location = photoSize.location;
            newPhotoSize.size = photoSize.size;
            newPhotoSize.type = photoSize.type;

            if (message.media instanceof TLRPC.TL_messageMediaPhoto) {
                for (int a = 0; a < message.media.photo.sizes.size(); a++) {
                    if (message.media.photo.sizes.get(a) instanceof TLRPC.TL_photoCachedSize) {
                        message.media.photo.sizes.set(a, newPhotoSize);
                        break;
                    }
                }
            } else if (message.media instanceof TLRPC.TL_messageMediaVideo) {
                message.media.video.thumb = newPhotoSize;
            } else if (message.media instanceof TLRPC.TL_messageMediaDocument) {
                message.media.document.thumb = newPhotoSize;
            } else if (message.media instanceof TLRPC.TL_messageMediaWebPage) {
                for (int a = 0; a < message.media.webpage.photo.sizes.size(); a++) {
                    if (message.media.webpage.photo.sizes.get(a) instanceof TLRPC.TL_photoCachedSize) {
                        message.media.webpage.photo.sizes.set(a, newPhotoSize);
                        break;
                    }
                }
            }
        }
    }

    public static void saveMessagesThumbs(ArrayList<TLRPC.Message> messages) {
        if (messages == null || messages.isEmpty()) {
            return;
        }
        for (TLRPC.Message message : messages) {
            saveMessageThumbs(message);
        }
    }
}
