Gadgetbridge/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/AndroidUtils.java

/*  Copyright (C) 2016-2021 Andreas Shimokawa, Carsten Pfeiffer, Daniele
    Gobbetti, Felix Konstantin Maurer, Marc Nause, Petr Vaněk, Taavi Eomäe

    This file is part of Gadgetbridge.

    Gadgetbridge is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Gadgetbridge is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
package nodomain.freeyourgadget.gadgetbridge.util;

import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.database.Cursor;
import android.graphics.Color;
import android.net.Uri;
import android.os.Environment;
import android.os.ParcelUuid;
import android.os.Parcelable;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.content.FileProvider;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;

import com.google.android.material.color.DynamicColors;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Locale;

import nodomain.freeyourgadget.gadgetbridge.GBApplication;
import nodomain.freeyourgadget.gadgetbridge.R;

public class AndroidUtils {
    private static final Logger LOG = LoggerFactory.getLogger(AndroidUtils.class);

    /**
     * Creates a new {@link ParcelUuid} array with the contents of the given uuids.
     * The given array is expected to contain only {@link ParcelUuid} elements.
     * @param uuids an array of {@link ParcelUuid} elements
     * @return a {@link ParcelUuid} array instance with the same contents
     */
    public static ParcelUuid[] toParcelUuids(Parcelable[] uuids) {
        if (uuids == null) {
            return null;
        }
        ParcelUuid[] uuids2 = new ParcelUuid[uuids.length];
        System.arraycopy(uuids, 0, uuids2, 0, uuids.length);
        return uuids2;
    }

    /**
     * Unregisters the given receiver from the given context.
     * @param context the context from which to unregister
     * @param receiver the receiver to unregister
     * @return true if it was successfully unregistered, or false if the receiver was not registered
     */
    public static boolean safeUnregisterBroadcastReceiver(Context context, BroadcastReceiver receiver) {
        try {
            context.unregisterReceiver(receiver);
            return true;
        } catch (IllegalArgumentException ex) {
            return false;
        }
    }

    /**
     * Unregisters the given receiver from the given {@link LocalBroadcastManager}.
     * @param manager the manager  from which to unregister
     * @param receiver the receiver to unregister
     * @return true if it was successfully unregistered, or false if the receiver was not registered
     */
    public static boolean safeUnregisterBroadcastReceiver(LocalBroadcastManager manager, BroadcastReceiver receiver) {
        try {
            manager.unregisterReceiver(receiver);
            return true;
        } catch (IllegalArgumentException ex) {
            return false;
        }
    }

    public static void setLanguage(Context context, Locale language) {
        Configuration config = new Configuration();
        config.setLocale(language);

        // FIXME: I have no idea what I am doing
        context.getResources().updateConfiguration(config, context.getResources().getDisplayMetrics());
    }

    /**
     * Returns the theme dependent text color as a css-style hex string.
     * @param context the context to access the colour
     */
    public static String getTextColorHex(Context context) {
        int color;
        if (DynamicColors.isDynamicColorAvailable() && GBApplication.areDynamicColorsEnabled()) {
            Context dynamicColorContext;
            if (GBApplication.isDarkThemeEnabled()) {
                dynamicColorContext = DynamicColors.wrapContextIfAvailable(context, R.style.GadgetbridgeThemeDynamicDark);
            } else {
                dynamicColorContext = DynamicColors.wrapContextIfAvailable(context, R.style.GadgetbridgeThemeDynamicLight);
            }
            int[] attrsToResolve = {R.attr.colorOnSurface};
            TypedArray ta = dynamicColorContext.obtainStyledAttributes(attrsToResolve);
            color = ta.getColor(0, 0);
            ta.recycle();
        } else if (GBApplication.isDarkThemeEnabled()) {
            color = context.getResources().getColor(R.color.primarytext_dark);
        } else {
            color = context.getResources().getColor(R.color.primarytext_light);
        }
        return colorToHex(color);
    }

    /**
     * Returns the theme dependent background color as a css-style hex string.
     * @param context the context to access the colour
     */
    public static String getBackgroundColorHex(Context context) {
        int color;
        if (DynamicColors.isDynamicColorAvailable() && GBApplication.areDynamicColorsEnabled()) {
            Context dynamicColorContext;
            if (GBApplication.isDarkThemeEnabled()) {
                dynamicColorContext = DynamicColors.wrapContextIfAvailable(context, R.style.GadgetbridgeThemeDynamicDark);
            } else {
                dynamicColorContext = DynamicColors.wrapContextIfAvailable(context, R.style.GadgetbridgeThemeDynamicLight);
            }
            int[] attrsToResolve = {R.attr.colorSurface};
            TypedArray ta = dynamicColorContext.obtainStyledAttributes(attrsToResolve);
            color = ta.getColor(0, 0);
            ta.recycle();
        } else if (GBApplication.isDarkThemeEnabled()) {
            color = context.getResources().getColor(R.color.cardview_dark_background);
        } else {
            color = context.getResources().getColor(R.color.cardview_light_background);
        }
        return colorToHex(color);
    }

    public static int getBackgroundColor(Context context) {
        int color;
        if (GBApplication.isDarkThemeEnabled()) {
            color = context.getResources().getColor(R.color.cardview_dark_background);
        } else {
            color = context.getResources().getColor(R.color.cardview_light_background);
        }
        return color;
    }


    private static String colorToHex(int color) {
        return "#"
                + Integer.toHexString(Color.red(color))
                + Integer.toHexString(Color.green(color))
                + Integer.toHexString(Color.blue(color));
    }

    /**
     * As seen on StackOverflow https://stackoverflow.com/a/36714242/1207186
     * Try to find the file path of a document uri
     *
     * @param context the application context
     * @param uri     the Uri for which the path should be resolved
     * @return the path corresponding to the Uri as a String
     * @throws IllegalArgumentException on any problem decoding the uri to a path
     */
    public static @NonNull String getFilePath(@NonNull Context context, @NonNull Uri uri) throws IllegalArgumentException {
        try {
            String path = internalGetFilePath(context, uri);
            if (TextUtils.isEmpty(path)) {
                throw new IllegalArgumentException("Unable to decode the given uri to a file path: " + uri);
            }
            return path;
        } catch (IllegalArgumentException ex) {
            throw ex;
        } catch (Exception ex) {
            throw new IllegalArgumentException("Unable to decode the given uri to a file path: " + uri, ex);
        }
    }

    /**
     * As seen on StackOverflow https://stackoverflow.com/a/36714242/1207186
     * Try to find the file path of a document uri
     * @param context the application context
     * @param uri the Uri for which the path should be resolved
     * @return the path corresponding to the Uri as a String
     * @throws URISyntaxException
    */
    private static @Nullable String internalGetFilePath(@NonNull Context context, @NonNull Uri uri) throws URISyntaxException {
        String selection = null;
        String[] selectionArgs = null;

        if (DocumentsContract.isDocumentUri(context.getApplicationContext(), uri)) {
            if ("com.android.externalstorage.documents".equals(uri.getAuthority())) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                return Environment.getExternalStorageDirectory() + "/" + split[1];
            } else if ("com.android.providers.downloads.documents".equals(uri.getAuthority())) {
                final String id = DocumentsContract.getDocumentId(uri);
                if (!TextUtils.isEmpty(id)) {
                    if (id.startsWith("raw:")) {
                        return id.replaceFirst("raw:", "");
                    }
                    uri = ContentUris.withAppendedId(
                            Uri.parse("content://downloads/public_downloads"), Long.parseLong(id));
                }
            } else if ("com.android.providers.media.documents".equals(uri.getAuthority())) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];
                if ("image".equals(type)) {
                    uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }
                selection = "_id=?";
                selectionArgs = new String[]{
                        split[1]
                };
            }
        }
        if ("content".equalsIgnoreCase(uri.getScheme())) {
            String[] projection = {
                    MediaStore.Images.Media.DATA
            };
            Cursor cursor = context.getContentResolver()
                    .query(uri, projection, selection, selectionArgs, null);
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            if (cursor.moveToFirst()) {
                return cursor.getString(column_index);
            }
        } else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }
        throw new IllegalArgumentException("Unable to decode the given uri to a file path: " + uri);
    }

    public static void viewFile(String path, String action, Context context) throws IOException {
        Intent intent = new Intent(action);
        File file = new File(path);

        Uri contentUri = FileProvider.getUriForFile(context,
                context.getApplicationContext().getPackageName() + ".screenshot_provider", file);
        intent.setFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
        intent.setDataAndType(contentUri,"application/gpx+xml");
        try {
            context.startActivity(intent);
        } catch (ActivityNotFoundException e) {
            Toast.makeText(context, R.string.activity_error_no_app_for_gpx, Toast.LENGTH_LONG).show();
        }
    }

    public static void shareBytesAsFile(final Context context, final String name, final byte[] bytes) throws IOException {
        final File cacheDir = context.getCacheDir();
        final File rawCacheDir = new File(cacheDir, "raw");
        rawCacheDir.mkdir();
        final File file = new File(rawCacheDir, name);

        try (FileOutputStream outputStream = new FileOutputStream(file)) {
            outputStream.write(bytes);
        } catch (final IOException e) {
            LOG.error("Failed to write bytes to temporary file", e);
            return;
        }

        shareFile(context, file);
    }

    public static void shareFile(final Context context, final File file) throws IOException {
        if (!file.exists()) {
            LOG.warn("File {} does not exist", file.getPath());
            return;
        }

        shareFile(context, file, "*/*");
    }

    public static void shareFile(final Context context, final File file, final String type) throws IOException {
        final Uri contentUri = FileProvider.getUriForFile(
                context,
                context.getApplicationContext().getPackageName() + ".screenshot_provider",
                file
        );

        final Intent intent = new Intent(Intent.ACTION_SEND);
        intent.setType(type);
        intent.putExtra(Intent.EXTRA_STREAM, contentUri);
        intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        try {
            context.startActivity(Intent.createChooser(intent, "Share file"));
        } catch (ActivityNotFoundException e) {
            Toast.makeText(context, R.string.activity_error_share_failed, Toast.LENGTH_LONG).show();
        }
    }

    public static void openWebsite(String url){
        Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
        i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
        GBApplication.getContext().startActivity(i);
    }

    public static void openApp(String packageName) throws ClassNotFoundException {
        Context context = GBApplication.getContext();

        Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage(packageName);
        if(launchIntent == null){
            throw new ClassNotFoundException("App " + packageName + " cannot be found");
        }
        GBApplication.getContext().startActivity(launchIntent);
    }
}