/**
 * Copyright 2015 ArcBees Inc.
 *
 * 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.arcbees.gaestudio.server.util;

import java.util.Map;

import com.google.common.collect.ImmutableMap;

import static com.google.common.base.Preconditions.checkNotNull;

public final class BoxedDefaults {
    private static final Map<Class, Object> DEFAULTS;

    private BoxedDefaults() {
    }

    @SuppressWarnings("unchecked")
    public static <T> T defaultValue(Class<T> type) {
        return (T) DEFAULTS.get(checkNotNull(type));
    }

    static {
        DEFAULTS = ImmutableMap.<Class, Object>builder()
                .put(Boolean.class, false)
                .put(Character.class, '\0')
                .put(Byte.class, (byte) 0)
                .put(Short.class, (short) 0)
                .put(Integer.class, 0)
                .put(Long.class, 0L)
                .put(Float.class, 0f)
                .put(Double.class, 0d)
                .put(String.class, "")
                .build();
    }
}