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/*
 * Copyright 2014 Netflix, Inc.
 *
 * 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 io.reactivex.netty.protocol.text.sse;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageEncoder;

import java.util.List;
import java.util.regex.Pattern;

/**
 * An encoder to convert {@link ServerSentEvent} to a {@link ByteBuf}
 *
 * @author Nitesh Kant
 *
 * @deprecated Use {@link io.reactivex.netty.protocol.http.sse.ServerSentEventEncoder} instead.
 */
@Deprecated
@ChannelHandler.Sharable
public class ServerSentEventEncoder extends MessageToMessageEncoder {

    private static final Pattern PATTERN_NEW_LINE = Pattern.compile("\n");
    private static final byte[] EVENT_PREFIX_BYTES = "event: ".getBytes();
    private static final byte[] NEW_LINE_AS_BYTES = "\n".getBytes();
    private static final byte[] ID_PREFIX_AS_BYTES = "id: ".getBytes();
    private static final byte[] DATA_PREFIX_AS_BYTES = "data: ".getBytes();

    @Override
    protected void encode(ChannelHandlerContext ctx, ServerSentEvent serverSentEvent, List