/*
 * Copyright (C) 2014 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.systemui.statusbar.policy;

import android.content.Context;
import android.content.Intent;
import android.telephony.SubscriptionInfo;

import com.android.settingslib.net.DataUsageController;
import com.android.settingslib.wifi.AccessPoint;
import com.android.systemui.DemoMode;
import com.android.systemui.statusbar.policy.NetworkController.SignalCallback;

import java.util.List;

public interface NetworkController extends CallbackController<SignalCallback>, DemoMode {

    boolean hasMobileDataFeature();
    void addCallback(SignalCallback cb);
    void removeCallback(SignalCallback cb);
    void setWifiEnabled(boolean enabled);
    AccessPointController getAccessPointController();
    DataUsageController getMobileDataController();
    DataSaverController getDataSaverController();
    String getMobileDataNetworkName();
    int getNumberSubscriptions();

    boolean hasVoiceCallingFeature();

    void addEmergencyListener(EmergencyListener listener);
    void removeEmergencyListener(EmergencyListener listener);
    boolean hasEmergencyCryptKeeperText();

    boolean isRadioOn();

    public interface SignalCallback {
        default void setWifiIndicators(boolean enabled, IconState statusIcon, IconState qsIcon,
                boolean activityIn, boolean activityOut, String description, boolean isTransient,
                String statusLabel) {}

        /**
         * Callback for listeners to be able to update the state of any UI tracking connectivity
         *  @param statusIcon the icon that should be shown in the status bar
         * @param qsIcon the icon to show in Quick Settings
         * @param statusType the resId of the data type icon (e.g. LTE) to show in the status bar
         * @param qsType similar to above, the resId of the data type icon to show in Quick Settings
         * @param activityIn indicates whether there is inbound activity
         * @param activityOut indicates outbound activity
         * @param typeContentDescription the contentDescription of the data type
         * @param typeContentDescriptionHtml the (possibly HTML-styled) contentDescription of the
         *                                   data type. Suitable for display
         * @param description description of the network (usually just the network name)
         * @param isWide //TODO: unused?
         * @param subId subscription ID for which to update the UI
         * @param roaming indicates roaming
         */
        default void setMobileDataIndicators(IconState statusIcon, IconState qsIcon, int statusType,
                int qsType, boolean activityIn, boolean activityOut,
                CharSequence typeContentDescription,
                CharSequence typeContentDescriptionHtml, CharSequence description,
                boolean isWide, int subId, boolean roaming) {
        }

        default void setSubs(List<SubscriptionInfo> subs) {}

        default void setNoSims(boolean show, boolean simDetected) {}

        default void setEthernetIndicators(IconState icon) {}

        default void setIsAirplaneMode(IconState icon) {}

        default void setMobileDataEnabled(boolean enabled) {}
    }

    public interface EmergencyListener {
        void setEmergencyCallsOnly(boolean emergencyOnly);
    }

    public static class IconState {
        public final boolean visible;
        public final int icon;
        public final String contentDescription;

        public IconState(boolean visible, int icon, String contentDescription) {
            this.visible = visible;
            this.icon = icon;
            this.contentDescription = contentDescription;
        }

        public IconState(boolean visible, int icon, int contentDescription,
                Context context) {
            this(visible, icon, context.getString(contentDescription));
        }
    }

    /**
     * Tracks changes in access points.  Allows listening for changes, scanning for new APs,
     * and connecting to new ones.
     */
    public interface AccessPointController {
        void addAccessPointCallback(AccessPointCallback callback);
        void removeAccessPointCallback(AccessPointCallback callback);
        void scanForAccessPoints();
        int getIcon(AccessPoint ap);
        boolean connect(AccessPoint ap);
        boolean canConfigWifi();

        public interface AccessPointCallback {
            void onAccessPointsChanged(List<AccessPoint> accessPoints);
            void onSettingsActivityTriggered(Intent settingsIntent);
        }
    }
}