/*
 * 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 com.android.settings.display;

import android.content.Context;
import android.os.UserManager;

import androidx.preference.Preference;

import com.android.settings.R;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settings.dream.DreamSettings;
import com.android.settingslib.core.AbstractPreferenceController;

public class ScreenSaverPreferenceController extends AbstractPreferenceController implements
        PreferenceControllerMixin {

    private static final String KEY_SCREEN_SAVER = "screensaver";
    private final boolean mDreamsDisabledByAmbientModeSuppression;

    public ScreenSaverPreferenceController(Context context) {
        super(context);
        mDreamsDisabledByAmbientModeSuppression = context.getResources().getBoolean(
                com.android.internal.R.bool.config_dreamsDisabledByAmbientModeSuppressionConfig);
    }

    @Override
    public boolean isAvailable() {
        final boolean dreamsSupported = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_dreamsSupported);
        final boolean dreamsOnlyEnabledForDockUser = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_dreamsOnlyEnabledForDockUser);
        // TODO(b/257333623): Allow the Dock User to be non-SystemUser user in HSUM.
        return dreamsSupported && (!dreamsOnlyEnabledForDockUser || isSystemUser());
    }

    @Override
    public String getPreferenceKey() {
        return KEY_SCREEN_SAVER;
    }

    @Override
    public void updateState(Preference preference) {
        if (mDreamsDisabledByAmbientModeSuppression
                && AmbientDisplayAlwaysOnPreferenceController.isAodSuppressedByBedtime(mContext)) {
            preference.setSummary(R.string.screensaver_settings_when_to_dream_bedtime);
        } else {
            preference.setSummary(DreamSettings.getSummaryTextWithDreamName(mContext));
        }
    }

    private boolean isSystemUser() {
        final UserManager userManager = mContext.getSystemService(UserManager.class);
        return userManager.isSystemUser();
    }
}