/*
 * Copyright (C) 2022 The 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 android.car.builtin;

import android.annotation.SystemApi;
import android.os.SystemProperties;

/**
 * Class to hold car builtin library's common stuffs.
 *
 * @hide
 */
@SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
public final class CarBuiltin {
    /**
     * System property to define platform minor version.
     *
     * <p>Value is int string. Check {@link #PROPERTY_PLATFORM_MINOR_VERSION} for further details.
     * If not set, default value of {@code 0} is assumed.
     */
    private static final String PROPERTY_PLATFORM_MINOR_VERSION =
            "ro.android.car.version.platform_minor";

    /**
     * Represents a minor version change of car platform for the same
     * {@link android.os.Build.VERSION#SDK_INT}.
     *
     * <p>It will reset to {@code 0} whenever {@link android.os.Build.VERSION#SDK_INT} is updated
     * and will increase by {@code 1} if car builtin or or other car platform part is changed with
     * the same {@link android.os.Build.VERSION#SDK_INT}. Client should check this version to use
     * APIs which were added in a minor only version update.
     */
    public static final int PLATFORM_VERSION_MINOR_INT = SystemProperties.getInt(
            PROPERTY_PLATFORM_MINOR_VERSION, /* def= */ 0);

    private CarBuiltin() {
        throw new UnsupportedOperationException();
    }
}