/*
 *
 *  *    Copyright (C) 2016 Amit Shekhar
 *  *    Copyright (C) 2011 Android Open Source Project
 *  *
 *  *    Licensed under the Apache License, Version 2.0 (the "License");
 *  *    you may not use this file except in compliance with the License.
 *  *    You may obtain a copy of the License at
 *  *
 *  *        http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  *    Unless required by applicable law or agreed to in writing, software
 *  *    distributed under the License is distributed on an "AS IS" BASIS,
 *  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  *    See the License for the specific language governing permissions and
 *  *    limitations under the License.
 *
 */

package com.amitshekhar.utils;

import android.content.Context;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Created by amitshekhar on 16/11/16.
 */

public final class PrefUtils {

    private static final String PREFS_SUFFIX = ".xml";

    private PrefUtils() {
        // This class in not publicly instantiable
    }

    public static List<String> getSharedPreferenceTags(Context context) {

        ArrayList<String> tags = new ArrayList<>();

        String rootPath = context.getApplicationInfo().dataDir + "/shared_prefs";
        File root = new File(rootPath);
        if (root.exists()) {
            for (File file : root.listFiles()) {
                String fileName = file.getName();
                if (fileName.endsWith(PREFS_SUFFIX)) {
                    tags.add(fileName.substring(0, fileName.length() - PREFS_SUFFIX.length()));
                }
            }
        }

        Collections.sort(tags);

        return tags;
    }
}