/*
 * Copyright 2018 Anton Tananaev (anton@traccar.org)
 *
 * 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 org.traccar;

import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelOutboundHandlerAdapter;
import io.netty.channel.ChannelPromise;

import java.nio.CharBuffer;
import java.nio.charset.StandardCharsets;

public class AdvancedStringEncoder extends ChannelOutboundHandlerAdapter {

    @Override
    public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
        NetworkMessage networkMessage = (NetworkMessage) msg;
        String string = (String) networkMessage.getMessage();
        ctx.write(new NetworkMessage(
                ByteBufUtil.encodeString(ctx.alloc(), CharBuffer.wrap(string), StandardCharsets.US_ASCII),
                networkMessage.getRemoteAddress()), promise);
    }

}