/*
 * Copyright 2014 Google Inc. All rights reserved.
 *
 * 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.
 */

// THIS IS MODIFIED COPY OF THE "L" PLATFORM CLASS. BE CAREFUL ABOUT EDITS.
// THIS CODE SHOULD FOLLOW ANDROID STYLE.
//
// Changes:
//   Removed the last two equals() methods.

package org.physical_web.physicalweb.ble;

import android.util.SparseArray;

import java.util.Arrays;
import java.util.Iterator;
import java.util.Map;

/**
 * Helper class for Bluetooth LE utils.
 *
 * @hide
 */
public class Utils {

    /**
     * Returns a string composed from a {@link SparseArray}.
     */
    static String toString(SparseArray<byte[]> array) {
        if (array == null) {
            return "null";
        }
        if (array.size() == 0) {
            return "{}";
        }
        StringBuilder buffer = new StringBuilder();
        buffer.append('{');
        for (int i = 0; i < array.size(); ++i) {
            buffer.append(array.keyAt(i)).append('=').append(array.valueAt(i));
        }
        buffer.append('}');
        return buffer.toString();
    }

    /**
     * Returns a string composed from a {@link Map}.
     */
    static <T> String toString(Map<T, byte[]> map) {
        if (map == null) {
            return "null";
        }
        if (map.isEmpty()) {
            return "{}";
        }
        StringBuilder buffer = new StringBuilder();
        buffer.append('{');
        Iterator<Map.Entry<T, byte[]>> it = map.entrySet().iterator();
        while (it.hasNext()) {
            Map.Entry<T, byte[]> entry = it.next();
            Object key = entry.getKey();
            buffer.append(key).append('=').append(Arrays.toString(map.get(key)));
            if (it.hasNext()) {
                buffer.append(", ");
            }
        }
        buffer.append('}');
        return buffer.toString();
    }
}
