path: root/src/com/android/settings/development/SmartDdsSwitchPreferenceController.java

/*
Copyright (c) 2021 The Linux Foundation. All rights reserved.

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 modification, are permitted provided that the following conditions are
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 * Redistributions of source code must retain the above copyright
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 * Redistributions in binary form must reproduce the above
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 * Neither the name of The Linux Foundation nor the names of its
 contributors may be used to endorse or promote products derived
 from this software without specific prior written permission.

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 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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package com.android.settings.development;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.RemoteException;
import android.provider.Settings;
import android.telephony.SubscriptionManager;
import android.telephony.TelephonyManager;
import android.util.Log;
import androidx.preference.Preference;
import androidx.preference.SwitchPreference;

import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.development.DeveloperOptionsPreferenceController;
import com.android.settings.R;

import com.qti.extphone.Client;
import com.qti.extphone.ExtPhoneCallbackBase;
import com.qti.extphone.ExtTelephonyManager;
import com.qti.extphone.ServiceCallback;
import com.qti.extphone.Token;

public class SmartDdsSwitchPreferenceController extends DeveloperOptionsPreferenceController
        implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {

    private final String TAG = "SmartDdsSwitchPreferenceController";

    private final int EVENT_SET_DEFAULT_TOGGLE_STATE_RESPONSE = 1;

    private final int SETTING_VALUE_ON = 1;
    private final int SETTING_VALUE_OFF = 0;

    private static SmartDdsSwitchPreferenceController mInstance;
    private Client mClient;
    private Context mContext;
    private String mPackageName;
    private final TelephonyManager mTelephonyManager;
    private ExtTelephonyManager mExtTelephonyManager;
    private boolean mFeatureAvailable = false;
    private boolean mServiceConnected = false;
    private boolean mSwitchEnabled = false;
    private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            updateState(mPreference);
        }
    };

    private SmartDdsSwitchPreferenceController(Context context) {
        super(context);
        Log.d(TAG, "Constructor");
        mContext = context.getApplicationContext();
        mPackageName = mContext.getPackageName();
        mTelephonyManager = mContext.getSystemService(TelephonyManager.class);
        mExtTelephonyManager = ExtTelephonyManager.getInstance(mContext);
        mExtTelephonyManager.connectService(mExtTelManagerServiceCallback);
        IntentFilter filter = new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED);
        filter.addAction(TelephonyManager.ACTION_SIM_APPLICATION_STATE_CHANGED);
        mContext.registerReceiver(mBroadcastReceiver, filter);
    }

    public static SmartDdsSwitchPreferenceController getInstance(Context context) {
        if (mInstance == null) {
            mInstance = new SmartDdsSwitchPreferenceController(context);
        }
        return mInstance;
    }

    public void cleanUp() {
        Log.d(TAG, "Disconnecting ExtTelephonyService");
        mExtTelephonyManager.disconnectService();
        mInstance = null;
    }

    private ServiceCallback mExtTelManagerServiceCallback = new ServiceCallback() {
        @Override
        public void onConnected() {
            Log.d(TAG, "ExtTelephonyService connected");
            mServiceConnected = true;
            mClient = mExtTelephonyManager.registerCallback(mPackageName, mCallback);
            Log.d(TAG, "Client = " + mClient);
        }

        @Override
        public void onDisconnected() {
            Log.d(TAG, "ExtTelephonyService disconnected");
            mContext.unregisterReceiver(mBroadcastReceiver);
            mServiceConnected = false;
            mClient = null;
        }
    };

    private ExtPhoneCallbackBase mCallback = new ExtPhoneCallbackBase() {
        @Override
        public void setSmartDdsSwitchToggleResponse(Token token, boolean result) throws
                RemoteException {
            Log.d(TAG, "setSmartDdsSwitchToggleResponse: token = " + token + " result = " + result);
            if (result) {
                mHandler.sendMessage(mHandler.obtainMessage(
                        EVENT_SET_DEFAULT_TOGGLE_STATE_RESPONSE));
            }
        }
    };

    private Handler mHandler = new Handler(Looper.getMainLooper()) {
        @Override
        public void handleMessage(Message msg) {
            switch(msg.what) {
                case EVENT_SET_DEFAULT_TOGGLE_STATE_RESPONSE: {
                    Log.d(TAG, "EVENT_SET_DEFAULT_TOGGLE_STATE_RESPONSE");
                    String defaultSummary = mContext.getResources().getString(
                            R.string.smart_dds_switch_summary);
                    updateUi(defaultSummary, true);
                    putSwitchValue(mSwitchEnabled ? SETTING_VALUE_ON : SETTING_VALUE_OFF);
                    break;
                }
                default:
                    Log.e(TAG, "Unsupported action");
            }
        }
    };

    @Override
    public String getPreferenceKey() {
        return Settings.Global.SMART_DDS_SWITCH;
    }

    @Override
    public boolean onPreferenceChange(Preference preference, Object newValue) {
        mSwitchEnabled = (Boolean) newValue;
        Log.d(TAG, "onPreferenceChange: isEnabled = " + mSwitchEnabled);
        // Temporarily update the text and disable the button until the response is received
        String waitSummary = mContext.getResources().getString(
                R.string.smart_dds_switch_wait_summary);
        updateUi(waitSummary, false);
        if (mServiceConnected && mClient != null) {
            try {
                mExtTelephonyManager.setSmartDdsSwitchToggle(mSwitchEnabled, mClient);
                return true;
            } catch (Exception e) {
                Log.e(TAG, "Exception " + e);
                return false;
            }
        } else {
            Log.e(TAG, "ExtTelephonyManager service not connected");
            return false;
        }
    }

    @Override
    public void updateState(Preference preference) {
        if (mPreference != null) {
            final int smartDdsSwitch = getSwitchValue();
            ((SwitchPreference) mPreference).setChecked(smartDdsSwitch != SETTING_VALUE_OFF);
        }
        if (mServiceConnected) {
            try {
                mFeatureAvailable = mExtTelephonyManager.isSmartDdsSwitchFeatureAvailable();
            } catch (Exception e) {
                Log.e(TAG, "Exception " + e);
            }
            Log.d(TAG, "mFeatureAvailable: " + mFeatureAvailable);
            if (mFeatureAvailable) {
                String defaultSummary = mContext.getResources().getString(
                        R.string.smart_dds_switch_summary);
                updateUi(defaultSummary, isAvailable());
            } else {
                Log.d(TAG, "Feature unavailable");
                preference.setVisible(false);
            }
        } else {
            Log.d(TAG, "Service not connected");
        }
    }

    private void updateUi(String summary, boolean enable) {
        Log.d(TAG, "updateUi enable: " + enable);
        if (mPreference != null) {
            ((SwitchPreference) mPreference).setVisible(true);
            ((SwitchPreference) mPreference).setSummary(summary);
            ((SwitchPreference) mPreference).setEnabled(enable);
        }
    }

    @Override
    public boolean isAvailable() {
        // Only show the toggle if 1) APM is off and 2) more than one subscription is active
        SubscriptionManager subscriptionManager = mContext.getSystemService(
                SubscriptionManager.class);
        int numActiveSubscriptionInfoCount = subscriptionManager.getActiveSubscriptionInfoCount();
        Log.d(TAG, "numActiveSubscriptionInfoCount: " + numActiveSubscriptionInfoCount);
        return !isAirplaneModeOn() && (numActiveSubscriptionInfoCount > 1);
    }

    private boolean isAirplaneModeOn() {
        return Settings.Global.getInt(mContext.getContentResolver(),
                Settings.Global.AIRPLANE_MODE_ON, 0) != 0;
    }

    private void putSwitchValue(int state) {
        Settings.Global.putInt(mContext.getContentResolver(), getPreferenceKey(), state);
    }

    private int getSwitchValue() {
        return Settings.Global.getInt(mContext.getContentResolver(), getPreferenceKey(),
                SETTING_VALUE_OFF);
    }
}