/*
 * 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 static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE;
import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC;
import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL;

import android.content.Context;
import android.os.Process;
import android.os.UserManager;
import android.provider.Settings;

import androidx.annotation.NonNull;
import androidx.preference.Preference;

import com.android.settings.R;
import com.android.settings.core.TogglePreferenceController;
import com.android.settingslib.PrimarySwitchPreference;

/**
 * The top-level preference controller that updates the adaptive brightness.
 */
// LINT.IfChange
public class AutoBrightnessPreferenceController extends TogglePreferenceController {

    private final String SYSTEM_KEY = SCREEN_BRIGHTNESS_MODE;
    private final int DEFAULT_VALUE = SCREEN_BRIGHTNESS_MODE_MANUAL;

    public AutoBrightnessPreferenceController(@NonNull Context context, @NonNull String key) {
        super(context, key);
    }

    @Override
    public boolean isChecked() {
        return Settings.System.getInt(mContext.getContentResolver(),
                SYSTEM_KEY, DEFAULT_VALUE) != DEFAULT_VALUE;
    }

    @Override
    public boolean setChecked(boolean isChecked) {
        Settings.System.putInt(mContext.getContentResolver(), SYSTEM_KEY,
                isChecked ? SCREEN_BRIGHTNESS_MODE_AUTOMATIC : DEFAULT_VALUE);
        return true;
    }

    @Override
    @AvailabilityStatus
    public int getAvailabilityStatus() {
        return mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_automatic_brightness_available)
                ? AVAILABLE_UNSEARCHABLE
                : UNSUPPORTED_ON_DEVICE;
    }

    @Override
    public void updateState(Preference preference) {
        super.updateState(preference);
        if (!(preference instanceof PrimarySwitchPreference)) {
            return;
        }

        PrimarySwitchPreference pref = (PrimarySwitchPreference) preference;
        if (pref.isEnabled() && UserManager.get(mContext).hasBaseUserRestriction(
                UserManager.DISALLOW_CONFIG_BRIGHTNESS, Process.myUserHandle())) {
            pref.setEnabled(false);
            pref.setSwitchEnabled(false);
        }
    }

    @Override
    public CharSequence getSummary() {
        return mContext.getText(isChecked()
                ? R.string.auto_brightness_summary_on
                : R.string.auto_brightness_summary_off);
    }

    @Override
    public int getSliceHighlightMenuRes() {
        return R.string.menu_key_display;
    }
}
// LINT.ThenChange(AutoBrightnessScreen.kt)