/*
 * Copyright (C) 2022 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.internal.telephony;

import static android.telephony.TelephonyManager.HAL_SERVICE_IMS;

import static com.android.internal.telephony.RILConstants.RIL_UNSOL_CONNECTION_SETUP_FAILURE;
import static com.android.internal.telephony.RILConstants.RIL_UNSOL_NOTIFY_ANBR;
import static com.android.internal.telephony.RILConstants.RIL_UNSOL_TRIGGER_IMS_DEREGISTRATION;

import android.hardware.radio.ims.IRadioImsIndication;
import android.os.AsyncResult;
import android.telephony.ims.feature.ConnectionFailureInfo;

/**
 * Interface declaring unsolicited radio indications for IMS APIs.
 */
public class ImsIndication extends IRadioImsIndication.Stub {
    private final RIL mRil;

    public ImsIndication(RIL ril) {
        mRil = ril;
    }

    @Override
    public String getInterfaceHash() {
        return IRadioImsIndication.HASH;
    }

    @Override
    public int getInterfaceVersion() {
        return IRadioImsIndication.VERSION;
    }

    /**
     * Fired by radio when any IMS traffic is not sent to network due to any failure
     * on cellular networks.
     *
     * @param indicationType Type of radio indication.
     * @param token The token provided by {@link #startImsTraffic}.
     * @param failureInfo Connection failure information.
     */
    public void onConnectionSetupFailure(int indicationType, int token,
            android.hardware.radio.ims.ConnectionFailureInfo failureInfo) {
        mRil.processIndication(HAL_SERVICE_IMS, indicationType);

        Object[] response = new Object[2];
        response[0] = token;
        response[1] = new ConnectionFailureInfo(
                RILUtils.convertHalConnectionFailureReason(failureInfo.failureReason),
                failureInfo.causeCode, failureInfo.waitTimeMillis);

        if (RIL.RILJ_LOGD) mRil.unsljLogRet(RIL_UNSOL_CONNECTION_SETUP_FAILURE, response);

        mRil.mConnectionSetupFailureRegistrants.notifyRegistrants(
                new AsyncResult(null, response, null));
    }

    /**
     * Fired by radio when ANBR is received form the network.
     *
     * @param indicationType Type of radio indication.
     * @param qosSessionId QoS session ID is used to identify media stream such as audio or video.
     * @param imsdirection Direction of this packet stream (e.g. uplink or downlink).
     * @param bitsPerSecond The recommended bit rate for the UE
     *        for a specific logical channel and a specific direction by the network.
     */
    public void notifyAnbr(int indicationType, int qosSessionId, int imsdirection,
            int bitsPerSecond) {
        mRil.processIndication(HAL_SERVICE_IMS, indicationType);

        int[] response = new int[3];
        response[0] = qosSessionId;
        response[1] = imsdirection;
        response[2] = bitsPerSecond;

        if (RIL.RILJ_LOGD) mRil.unsljLogRet(RIL_UNSOL_NOTIFY_ANBR, response);

        mRil.mNotifyAnbrRegistrants.notifyRegistrants(new AsyncResult(null, response, null));
    }

    /**
     * Requests IMS stack to perform graceful IMS deregistration before radio performing
     * network detach in the events of SIM remove, refresh or and so on. The radio waits for
     * the IMS deregistration, which will be notified by telephony via
     * {@link IRadioIms#updateImsRegistrationInfo()}, or a certain timeout interval to start
     * the network detach procedure.
     *
     * @param indicationType Type of radio indication.
     * @param reason the reason why the deregistration is triggered.
     */
    public void triggerImsDeregistration(int indicationType, int reason) {
        mRil.processIndication(HAL_SERVICE_IMS, indicationType);

        if (RIL.RILJ_LOGD) mRil.unsljLogRet(RIL_UNSOL_TRIGGER_IMS_DEREGISTRATION, reason);

        int[] response = new int[1];
        response[0] = RILUtils.convertHalDeregistrationReason(reason);

        mRil.mTriggerImsDeregistrationRegistrants.notifyRegistrants(
                new AsyncResult(null, response, null));
    }
}