/**
 * 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.telephony.imsmedia;

import android.os.Parcel;
import android.telephony.imsmedia.MediaQualityThreshold;
import android.telephony.imsmedia.TextConfig;

import com.android.telephony.imsmedia.util.Log;

/**
 * Text session implementation for internal AP based RTP stack. This handles all API calls from
 * applications and passes it to native library.
 */
public class TextLocalSession {
    private static final String TAG = "TextLocalSession";
    private int mSessionId;
    private long mNativeObject = 0;

    /**
     * Instantiates a new text session
     *
     * @param sessionId    : session identifier
     * @param nativeObject : jni object modifier for calling jni methods
     */
    TextLocalSession(final int sessionId, final long nativeObject) {
        mSessionId = sessionId;
        mNativeObject = nativeObject;
    }

    /** Returns the unique session identifier */
    public int getSessionId() {
        Log.dc(TAG, "getSessionId");
        return mSessionId;
    }

    /**
     * Send request message with the corresponding arguments to libimsmediajni
     * library to operate
     *
     * @param sessionId : session identifier
     * @param parcel    : parcel argument to send to jni
     */
    public void sendRequest(final int sessionId, final Parcel parcel) {
        if (mNativeObject != 0) {
            if (parcel == null) {
                return;
            }
            byte[] data = parcel.marshall();
            JNIImsMediaService.sendMessage(mNativeObject, sessionId, data);
            parcel.recycle();
        }
    }

    /**
     * Modifies the configuration of the RTP session after the session is opened. It can be used
     * modify the direction, access network, codec parameters RTCP configuration, remote address and
     * remote port number. The service will apply if anything changed in this invocation compared to
     * previous and respond the updated the config in ImsMediaSession#onModifySessionResponse() API
     *
     * @param config provides remote end point info and codec details
     */
    public void modifySession(final TextConfig config) {
        Parcel parcel = Parcel.obtain();
        parcel.writeInt(TextSession.CMD_MODIFY_SESSION);
        if (config != null) {
            config.writeToParcel(parcel, 0);
        }
        sendRequest(mSessionId, parcel);
    }

    /**
     * Sets the media quality threshold parameters of the session to get media quality
     * notifications.
     *
     * @param threshold media quality thresholds for various quality parameters
     */
    public void setMediaQualityThreshold(final MediaQualityThreshold threshold) {
        Parcel parcel = Parcel.obtain();
        parcel.writeInt(TextSession.CMD_SET_MEDIA_QUALITY_THRESHOLD);
        if (threshold != null) {
            threshold.writeToParcel(parcel, 0);
        }
        sendRequest(mSessionId, parcel);
    }

    /**
     * Send Rtt text string to the network
     *
     * @param text The text string
     */
    public void sendRtt(String text) {
        Parcel parcel = Parcel.obtain();
        parcel.writeInt(TextSession.CMD_SEND_RTT);
        parcel.writeString(text);
        sendRequest(mSessionId, parcel);
    }
}