/*
* This is the source code of iGap for Android
* It is licensed under GNU AGPL v3.0
* You should have received a copy of the license in this archive (see LICENSE).
* Copyright © 2017 , iGap - www.iGap.net
* iGap Messenger | Free, Fast and Secure instant messaging application
* The idea of the RooyeKhat Media Company - www.RooyeKhat.co
* All rights reserved.
*/

package net.iGap.module;

import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.util.Log;
import android.webkit.MimeTypeMap;

import net.iGap.G;
import net.iGap.R;
import net.iGap.helper.HelperCalander;
import net.iGap.helper.HelperLog;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileReader;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.StringTokenizer;


public class FileUtils {
    public static final String MIME_TYPE_AUDIO = "audio/*";
    public static final String MIME_TYPE_TEXT = "text/*";
    public static final String MIME_TYPE_IMAGE = "image/*";
    public static final String MIME_TYPE_VIDEO = "video/*";
    public static final String MIME_TYPE_APP = "application/*";
    public static final String HIDDEN_PREFIX = ".";
    /**
     * TAG for log messages.
     */
    static final String TAG = "FileUtils";
    private static final boolean DEBUG = false; // Set to true to enable logging
    /**
     * File and folder comparator.
     *
     * @author paulburke
     */
    public static Comparator<File> sComparator = new Comparator<File>() {
        @Override
        public int compare(File f1, File f2) {
            // Sort alphabetically by lower case, which is much cleaner
            return f1.getName().toLowerCase().compareTo(f2.getName().toLowerCase());
        }
    };
    /**
     * File (not directories) filter.
     *
     * @author paulburke
     */
    public static FileFilter sFileFilter = new FileFilter() {
        @Override
        public boolean accept(File file) {
            final String fileName = file.getName();
            // Return files only (not directories) and skip hidden files
            return file.isFile() && !fileName.startsWith(HIDDEN_PREFIX);
        }
    };
    /**
     * Folder (directories) filter.
     *
     * @author paulburke
     */
    public static FileFilter sDirFilter = new FileFilter() {
        @Override
        public boolean accept(File file) {
            final String fileName = file.getName();
            // Return directories only and skip hidden directories
            return file.isDirectory() && !fileName.startsWith(HIDDEN_PREFIX);
        }
    };

    private FileUtils() {
    } //private constructor to enforce Singleton pattern

    /**
     * Gets the extension of a file name, like ".png" or ".jpg".
     *
     * @return Extension including the dot("."); "" if there is no extension;
     * null if uri was null.
     */
    public static String getExtension(String uri) {
        if (uri == null) {
            return null;
        }

        int dot = uri.lastIndexOf(".");
        if (dot >= 0) {
            return uri.substring(dot);
        } else {
            // No extension.
            return "";
        }
    }

    public static byte[] toByteArray(Bitmap bitmap) {
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
        return stream.toByteArray();
    }

    /**
     * decrease iamge size of file to request size
     *
     * @param f image file
     */
    public static Bitmap decodeFile(byte[] f) {
        //decode image size
        return BitmapFactory.decodeByteArray(f, 0, f.length);
    }

    public static Bitmap toBitmap(String photoPath) {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inPreferredConfig = Bitmap.Config.ARGB_8888;
        return BitmapFactory.decodeFile(photoPath, options);
    }

    /**
     * @return Whether the URI is a local one.
     */
    public static boolean isLocal(String url) {
        if (url != null && !url.startsWith("http://") && !url.startsWith("https://")) {
            return true;
        }
        return false;
    }

    /**
     * @return True if Uri is a MediaStore Uri.
     * @author paulburke
     */
    public static boolean isMediaUri(Uri uri) {
        return "media".equalsIgnoreCase(uri.getAuthority());
    }

    /**
     * Convert File into Uri.
     *
     * @return uri
     */
    public static Uri getUri(File file) {
        if (file != null) {
            return Uri.fromFile(file);
        }
        return null;
    }

    /**
     * Returns the path only (without file name).
     */
    public static File getPathWithoutFilename(File file) {
        if (file != null) {
            if (file.isDirectory()) {
                // no file to be split off. Return everything
                return file;
            } else {
                String filename = file.getName();
                String filepath = file.getAbsolutePath();

                // Construct path without file name.
                String pathwithoutname = filepath.substring(0, filepath.length() - filename.length());
                if (pathwithoutname.endsWith("/")) {
                    pathwithoutname = pathwithoutname.substring(0, pathwithoutname.length() - 1);
                }
                return new File(pathwithoutname);
            }
        }
        return null;
    }

    /**
     * @return The MIME type for the given file.
     */
    public static String getMimeType(File file) {

        String extension = getExtension(file.getName());

        if (extension.length() > 0) {
            return MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension.substring(1));
        }

        return "application/octet-stream";
    }

    /**
     * @return The MIME type for the give Uri.
     */
    public static String getMimeType(Context context, Uri uri) {
        File file = new File(getPath(context, uri));
        return getMimeType(file);
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is ExternalStorageProvider.
     * @author paulburke
     */
    public static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is DownloadsProvider.
     * @author paulburke
     */
    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is MediaProvider.
     * @author paulburke
     */
    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is Google Photos.
     */
    public static boolean isGooglePhotosUri(Uri uri) {
        return "com.google.android.apps.photos.content".equals(uri.getAuthority());
    }

    /**
     * Get the value of the data column for this Uri. This is useful for
     * MediaStore Uris, and other file-based ContentProviders.
     *
     * @param context       The context.
     * @param uri           The Uri to query.
     * @param selection     (Optional) Filter used in the query.
     * @param selectionArgs (Optional) Selection arguments used in the query.
     * @return The value of the _data column, which is typically a file path.
     * @author paulburke
     */
    public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {

        Cursor cursor = null;
        final String column = MediaStore.Images.Media.DATA;
        final String[] projection = {
                column
        };

        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
            if (cursor != null && cursor.moveToFirst()) {
                if (DEBUG) DatabaseUtils.dumpCursor(cursor);

                final int column_index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(column_index);
            }
        } catch (IllegalArgumentException e) {

        } finally {
            if (cursor != null) cursor.close();
        }
        return null;
    }

    /**
     * Get a file path from a Uri. This will get the the path for Storage Access
     * Framework Documents, as well as the _data field for the MediaStore and
     * other file-based ContentProviders.<br>
     * <br>
     * Callers should check whether the path is local before assuming it
     * represents a local file.
     *
     * @param context The context.
     * @param uri     The Uri to query.
     * @author paulburke
     * @see #isLocal(String)
     * @see #getFile(Context, Uri)
     */
    public static String getPath(final Context context, final Uri uri) {

        if (DEBUG) {
            Log.d(TAG + " File -", "Authority: " + uri.getAuthority() + ", Fragment: " + uri.getFragment() + ", Port: " + uri.getPort() + ", Query: " + uri.getQuery() + ", Scheme: " + uri.getScheme() + ", Host: " + uri.getHost() + ", Segments: " + uri.getPathSegments().toString());
        }

        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

        // DocumentProvider
        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
            if (isExternalStorageDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                if ("primary".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/" + split[1];
                } else {
                    String strPath;
                    if (Environment.isExternalStorageRemovable()) {
                        strPath = System.getenv("EXTERNAL_STORAGE");
                    } else {
                        strPath = System.getenv("SECONDARY_STORAGE");
                        if (strPath == null || strPath.length() == 0) {
                            strPath = System.getenv("EXTERNAL_SDCARD_STORAGE");
                        }
                    }
                    if (strPath != null && strPath.length() > 0) {
                        return strPath + "/" + split[1];
                    }
                    HelperLog.setErrorLog("FileUtils   getPath   :  " + uri);
                }

            }
            // DownloadsProvider
            else if (isDownloadsDocument(uri)) {

                final String id = DocumentsContract.getDocumentId(uri);
                final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

                return getDataColumn(context, contentUri, null, null);
            }
            // MediaProvider
            else if (isMediaDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                Uri contentUri = null;
                if ("image".equals(type)) {
                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }

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

                return getDataColumn(context, contentUri, selection, selectionArgs);
            }
        }
        // MediaStore (and general)
        else if ("content".equalsIgnoreCase(uri.getScheme())) {

            // Return the remote address
            if (isGooglePhotosUri(uri)) return uri.getLastPathSegment();

            return getDataColumn(context, uri, null, null);
        }
        // File
        else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }

        return null;
    }

    /**
     * Convert Uri into File, if possible.
     *
     * @return file A local file that the Uri was pointing to, or null if the
     * Uri is unsupported or pointed to a remote resource.
     * @author paulburke
     * @see #getPath(Context, Uri)
     */
    public static File getFile(Context context, Uri uri) {
        if (uri != null) {
            String path = getPath(context, uri);
            if (path != null && isLocal(path)) {
                return new File(path);
            }
        }
        return null;
    }

    /**
     * Get the file size in a human-readable string.
     *
     * @author paulburke
     */
    public static String getReadableFileSize(int size) {
        final int BYTES_IN_KILOBYTES = 1024;
        final DecimalFormat dec = new DecimalFormat("###.#");
        final String KILOBYTES = " KB";
        final String MEGABYTES = " MB";
        final String GIGABYTES = " GB";
        float fileSize = 0;
        String suffix = KILOBYTES;

        if (size > BYTES_IN_KILOBYTES) {
            fileSize = size / BYTES_IN_KILOBYTES;
            if (fileSize > BYTES_IN_KILOBYTES) {
                fileSize = fileSize / BYTES_IN_KILOBYTES;
                if (fileSize > BYTES_IN_KILOBYTES) {
                    fileSize = fileSize / BYTES_IN_KILOBYTES;
                    suffix = GIGABYTES;
                } else {
                    suffix = MEGABYTES;
                }
            }
        }
        return String.valueOf(dec.format(fileSize) + suffix);
    }

    /**
     * Attempt to retrieve the thumbnail of given File from the MediaStore. This
     * should not be called on the UI thread.
     *
     * @author paulburke
     */
    public static Bitmap getThumbnail(Context context, File file) {
        return getThumbnail(context, getUri(file), getMimeType(file));
    }

    /**
     * Attempt to retrieve the thumbnail of given Uri from the MediaStore. This
     * should not be called on the UI thread.
     *
     * @author paulburke
     */
    public static Bitmap getThumbnail(Context context, Uri uri) {
        return getThumbnail(context, uri, getMimeType(context, uri));
    }

    /**
     * Attempt to retrieve the thumbnail of given Uri from the MediaStore. This
     * should not be called on the UI thread.
     *
     * @author paulburke
     */
    public static Bitmap getThumbnail(Context context, Uri uri, String mimeType) {
        if (DEBUG) Log.d(TAG, "Attempting to get thumbnail");

        if (!isMediaUri(uri)) {
            Log.e(TAG, "You can only retrieve thumbnails for images and videos.");
            return null;
        }

        Bitmap bm = null;
        if (uri != null) {
            final ContentResolver resolver = context.getContentResolver();
            Cursor cursor = null;
            try {
                cursor = resolver.query(uri, null, null, null, null);
                if (cursor.moveToFirst()) {
                    final int id = cursor.getInt(0);
                    if (DEBUG) Log.d(TAG, "Got thumb ID: " + id);

                    if (mimeType.contains("video")) {
                        bm = MediaStore.Video.Thumbnails.getThumbnail(resolver, id, MediaStore.Video.Thumbnails.MINI_KIND, null);
                    } else if (mimeType.contains(FileUtils.MIME_TYPE_IMAGE)) {
                        bm = MediaStore.Images.Thumbnails.getThumbnail(resolver, id, MediaStore.Images.Thumbnails.MINI_KIND, null);
                    }
                }
            } catch (Exception e) {
                if (DEBUG) Log.e(TAG, "getThumbnail", e);
            } finally {
                if (cursor != null) cursor.close();
            }
        }
        return bm;
    }

    /**
     * Get the Intent for selecting content to be used in an Intent Chooser.
     *
     * @return The intent for opening a file with Intent.createChooser()
     * @author paulburke
     */
    public static Intent createGetContentIntent() {
        // Implicitly allow the user to select a particular kind of data
        final Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        // The MIME data type filter
        intent.setType("*/*");
        // Only return URIs that can be opened with ContentResolver
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        return intent;
    }

    /**
     * delete all files that exist in iGap Folders
     *
     * @param fileOrDirectory main iGap directory
     */
    public static void deleteRecursive(File fileOrDirectory) {
        if (fileOrDirectory.isDirectory()) {
            for (File child : fileOrDirectory.listFiles()) {
                deleteRecursive(child);
            }
        }
        fileOrDirectory.delete();
    }

    /**
     * convert Decimal Format
     */
    public static String formatFileSize(long size) {
        String hrSize = null;

        double b = size;
        double k = size / 1024.0;
        double m = ((size / 1024.0) / 1024.0);
        double g = (((size / 1024.0) / 1024.0) / 1024.0);
        double t = ((((size / 1024.0) / 1024.0) / 1024.0) / 1024.0);

        DecimalFormat dec = new DecimalFormat("0.0");

        if (t > 1) {
            hrSize = dec.format(t).concat(" " + G.context.getResources().getString(R.string.c_TB));
        } else if (g > 1) {
            hrSize = dec.format(g).concat(" " + G.context.getResources().getString(R.string.c_GB));
        } else if (m > 1) {
            hrSize = dec.format(m).concat(" " + G.context.getResources().getString(R.string.c_MB));
        } else if (k > 1) {
            hrSize = dec.format(k).concat(" " + G.context.getResources().getString(R.string.c_KB));
        } else {
            hrSize = dec.format(b).concat(" " + G.context.getResources().getString(R.string.c_byte));
        }

        return HelperCalander.isPersianUnicode ? HelperCalander.convertToUnicodeFarsiNumber(hrSize) : hrSize;
    }

    public static long getFolderSize(File dir) throws RuntimeException {
        long size = 0;
        if (dir == null) return size;

        if (dir.listFiles() != null) {

            for (File file : dir.listFiles()) {
                if (file != null) {
                    if (file.isFile()) {
                        size += file.length();
                    } else {
                        size += getFolderSize(file);
                    }
                } else {
                    return size;
                }
            }
        }
        return size;
    }

    public static List<String> getSdCardPathList() {
        List<String> storageList = new ArrayList<String>();
        String externalPath = Environment.getExternalStorageDirectory().getAbsolutePath();

        BufferedReader bufferedReader = null;
        try {
            bufferedReader = new BufferedReader(new FileReader("/proc/mounts"));
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                if (line.contains("vfat") || line.contains("/mnt")) {
                    StringTokenizer tokens = new StringTokenizer(line, " ");
                    String unused = tokens.nextToken();
                    String path = tokens.nextToken();
                    if (storageList.contains(path)) {
                        continue;
                    }
                    if (line.contains("/dev/block/vold")) {
                        if (!line.contains("/mnt/secure") && !line.contains("/mnt/asec") && !line.contains("/mnt/obb") && !line.contains("/dev/mapper") && !line.contains("tmpfs")) {
                            if (!new File(path).isDirectory()) {
                                int index = path.lastIndexOf('/');
                                if (index != -1) {
                                    String newPath = "/storage/" + path.substring(index + 1);
                                    if (new File(newPath).isDirectory()) {
                                        path = newPath;
                                    }
                                }
                            }
                            if (!path.equals(externalPath)) {
                                storageList.add(path);
                            }

                        }
                    }
                }
            }
        } catch (Exception e) {

        } finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                } catch (Exception e) {

                }
            }
        }
        return storageList;
    }
}