package com.rongan.cloud.netty.server;

import com.alibaba.fastjson.JSON;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.DelimiterBasedFrameDecoder;
import io.netty.handler.codec.Delimiters;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import io.netty.util.CharsetUtil;

import java.net.InetSocketAddress;

/**
 * @PACKAGE_NAME: com.rongan.cloud.netty.server
 * @NAME: NettyServer
 * @AUTHOR: wxs
 * @DATE: 2023/5/31 13:31
 * @PROJECT_NAME: weChatHook
 **/
public class WeChatHookNettyServer {

    /**
     * netty 依赖
     *      <dependency>
     *         <groupId>io.netty</groupId>
     *         <artifactId>netty-all</artifactId>
     *         <version>4.1.51.Final</version>
     *     </dependency>
     */
    private static final int PORT = 19099;

    public static void main(String[] args) {
        NioEventLoopGroup bossGroup = new NioEventLoopGroup();
        NioEventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap serverBootstrap = new ServerBootstrap();
            serverBootstrap.group(bossGroup, workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .localAddress(new InetSocketAddress(PORT))
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) {
                            ch.pipeline().addLast(new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()));
                            ch.pipeline().addLast(new StringDecoder(CharsetUtil.UTF_8));
                            ch.pipeline().addLast(new StringEncoder(CharsetUtil.UTF_8));
                            ch.pipeline().addLast(new ReceiveMsgHandler());
                        }
                    })
                    .option(ChannelOption.SO_BACKLOG, 128)
                    .childOption(ChannelOption.SO_KEEPALIVE, true);

            Channel channel = serverBootstrap.bind().sync().channel();
            System.out.println("Server started on port " + PORT);
            channel.closeFuture().sync();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    private static class ReceiveMsgHandler extends SimpleChannelInboundHandler<String> {
        @Override
        protected void channelRead0(ChannelHandlerContext ctx, String msg) {
            JSON.parseObject(msg).forEach((k,v)->{
                System.out.println(k+" = " + v);
            });
            System.out.println("----------end----------");
        }

        @Override
        public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
            cause.printStackTrace();
            ctx.close();
        }
    }


}