/*
 * Copyright (C) 2018 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.network.telephony.cdma;

import static com.android.settings.network.telephony.TelephonyConstants.TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA;
import static com.android.settings.network.telephony.TelephonyConstants.TelephonyManagerConstants.NETWORK_MODE_NR_LTE_GSM_WCDMA;
import static com.android.settings.network.telephony.TelephonyConstants.TelephonyManagerConstants.NETWORK_MODE_UNKNOWN;

import android.content.Context;
import android.provider.Settings;
import android.telephony.TelephonyManager;
import android.util.Log;

import androidx.preference.ListPreference;
import androidx.preference.Preference;

import com.android.settings.network.telephony.MobileNetworkUtils;

/**
 * Preference controller for "System Select"
 */
public class CdmaSystemSelectPreferenceController extends CdmaBasePreferenceController
        implements ListPreference.OnPreferenceChangeListener {
    private static final String TAG = "CdmaSystemSelectPreferenceController";

    public CdmaSystemSelectPreferenceController(Context context, String key) {
        super(context, key);
    }

    @Override
    public void updateState(Preference preference) {
        super.updateState(preference);
        final ListPreference listPreference = (ListPreference) preference;
        boolean isVisible = (getAvailabilityStatus() == AVAILABLE);
        listPreference.setVisible(isVisible);
        if (!isVisible) {
            return;
        }
        boolean hasTelephonyMgr = mTelephonyManager != null;
        try {
            final int mode =
                    hasTelephonyMgr ? mTelephonyManager.getCdmaRoamingMode()
                            : TelephonyManager.CDMA_ROAMING_MODE_RADIO_DEFAULT;
            if (mode != TelephonyManager.CDMA_ROAMING_MODE_RADIO_DEFAULT) {
                if (mode == TelephonyManager.CDMA_ROAMING_MODE_HOME
                        || mode == TelephonyManager.CDMA_ROAMING_MODE_ANY) {
                    listPreference.setValue(Integer.toString(mode));
                } else {
                    resetCdmaRoamingModeToDefault();
                }
            }

            final int settingsNetworkMode =
                    hasTelephonyMgr ? MobileNetworkUtils.getNetworkTypeFromRaf(
                            (int) mTelephonyManager.getAllowedNetworkTypesForReason(
                                    TelephonyManager.ALLOWED_NETWORK_TYPES_REASON_USER))
                            : NETWORK_MODE_UNKNOWN;
            final boolean enableList = settingsNetworkMode != NETWORK_MODE_LTE_GSM_WCDMA
                    && settingsNetworkMode != NETWORK_MODE_NR_LTE_GSM_WCDMA;
            listPreference.setEnabled(enableList);
        } catch (Exception exception) {
            Log.e(TAG, "Fail to access framework API", exception);
        }
    }

    @Override
    public boolean onPreferenceChange(Preference preference, Object object) {
        int newMode = Integer.parseInt((String) object);
        //TODO(b/117611981): only set it in one place
        try {
            mTelephonyManager.setCdmaRoamingMode(newMode);
            Settings.Global.putInt(mContext.getContentResolver(),
                    Settings.Global.CDMA_ROAMING_MODE, newMode);
            return true;
        } catch (IllegalStateException e) {
            return false;
        }
    }

    private void resetCdmaRoamingModeToDefault() {
        final ListPreference listPreference = (ListPreference) mPreference;
        //set the mButtonCdmaRoam
        listPreference.setValue(Integer.toString(TelephonyManager.CDMA_ROAMING_MODE_ANY));
        //set the Settings.System
        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.CDMA_ROAMING_MODE,
                TelephonyManager.CDMA_ROAMING_MODE_ANY);
        //Set the Status
        mTelephonyManager.setCdmaRoamingMode(TelephonyManager.CDMA_ROAMING_MODE_ANY);
    }
}