/*
 * Copyright (C) 2016 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.os;

import android.annotation.NonNull;
import android.annotation.Nullable;
import android.content.pm.UserInfo;
import android.graphics.Bitmap;

/**
 * @hide Only for use within the system server.
 */
public abstract class UserManagerInternal {
    public interface UserRestrictionsListener {
        /**
         * Called when a user restriction changes.
         *
         * @param userId target user id
         * @param newRestrictions new user restrictions
         * @param prevRestrictions user restrictions that were previously set
         */
        void onUserRestrictionsChanged(int userId, Bundle newRestrictions, Bundle prevRestrictions);
    }

    /**
     * Called by {@link com.android.server.devicepolicy.DevicePolicyManagerService}
     * to set per-user as well as global user restrictions.
     *
     * @param userId target user id for the local restrictions.
     * @param localRestrictions per-user restrictions.
     *     Caller must not change it once passed to this method.
     * @param globalRestrictions global restrictions set by DO.  Must be null when PO changed user
     *     restrictions, in which case global restrictions won't change.
     *     Caller must not change it once passed to this method.
     */
    public abstract void setDevicePolicyUserRestrictions(int userId,
            @NonNull Bundle localRestrictions, @Nullable Bundle globalRestrictions);
    /**
     * Returns the "base" user restrictions.
     *
     * Used by {@link com.android.server.devicepolicy.DevicePolicyManagerService} for upgrading
     * from MNC.
     */
    public abstract Bundle getBaseUserRestrictions(int userId);

    /**
     * Called by {@link com.android.server.devicepolicy.DevicePolicyManagerService} for upgrading
     * from MNC.
     */
    public abstract void setBaseUserRestrictionsByDpmsForMigration(int userId,
            Bundle baseRestrictions);

    /** Return a user restriction. */
    public abstract boolean getUserRestriction(int userId, String key);

    /** Adds a listener to user restriction changes. */
    public abstract void addUserRestrictionsListener(UserRestrictionsListener listener);

    /** Remove a {@link UserRestrictionsListener}. */
    public abstract void removeUserRestrictionsListener(UserRestrictionsListener listener);

    /**
     * Called by {@link com.android.server.devicepolicy.DevicePolicyManagerService} to update
     * whether the device is managed by device owner.
     */
    public abstract void setDeviceManaged(boolean isManaged);

    /**
     * Called by {@link com.android.server.devicepolicy.DevicePolicyManagerService} to update
     * whether the user is managed by profile owner.
     */
    public abstract void setUserManaged(int userId, boolean isManaged);

    /**
     * Called by {@link com.android.server.devicepolicy.DevicePolicyManagerService} to omit
     * restriction check, because DevicePolicyManager must always be able to set user icon
     * regardless of any restriction.
     * Also called by {@link com.android.server.pm.UserManagerService} because the logic of setting
     * the icon is in this method.
     */
    public abstract void setUserIcon(int userId, Bitmap bitmap);

    /**
     * Called by {@link com.android.server.devicepolicy.DevicePolicyManagerService} to inform the
     * user manager whether all users should be created ephemeral.
     */
    public abstract void setForceEphemeralUsers(boolean forceEphemeralUsers);

    /**
     * Switches to the system user and deletes all other users.
     *
     * <p>Called by the {@link com.android.server.devicepolicy.DevicePolicyManagerService} when
     * the force-ephemeral-users policy is toggled on to make sure there are no pre-existing
     * non-ephemeral users left.
     */
    public abstract void removeAllUsers();

    /**
     * Called by the activity manager when the ephemeral user goes to background and its removal
     * starts as a result.
     *
     * <p>It marks the ephemeral user as disabled in order to prevent it from being re-entered
     * before its removal finishes.
     *
     * @param userId the ID of the ephemeral user.
     */
    public abstract void onEphemeralUserStop(int userId);

    /**
     * Same as UserManager.createUser(), but bypasses the check for DISALLOW_ADD_USER.
     *
     * <p>Called by the {@link com.android.server.devicepolicy.DevicePolicyManagerService} when
     * createAndManageUser is called by the device owner.
     */
    public abstract UserInfo createUserEvenWhenDisallowed(String name, int flags);

    /**
     * Return whether the given user is running in an
     * {@code UserState.STATE_RUNNING_UNLOCKING} or
     * {@code UserState.STATE_RUNNING_UNLOCKED} state.
     */
    public abstract boolean isUserUnlockingOrUnlocked(int userId);

    /**
     * Return whether the given user is running
     */
    public abstract boolean isUserRunning(int userId);

    /**
     * Set user's running state
     */
    public abstract void setUserState(int userId, int userState);

    /**
     * Remove user's running state
     */
    public abstract void removeUserState(int userId);
}