package com.ard.tianyu.netty;

import com.ard.tianyu.netty.handler.ClientHandler;
import com.ard.tianyu.netty.handler.MessageProtocolDecoder;
import com.ard.tianyu.netty.handler.MessageProtocolEncoder;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.timeout.IdleStateHandler;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Component
@Slf4j
public class TyNettyTcpClient {

    public static Map<String, TyBoxSession> channels = new HashMap<>();

    EventLoopGroup eventLoopGroup = new NioEventLoopGroup();

    @Resource
    ClientHandler clientHandler;

    /**
     * 初始化Bootstrap
     */
    public Bootstrap getBootstrap(EventLoopGroup group) {
        if (null == group) {
            group = eventLoopGroup;
        }
        Bootstrap bootstrap = new Bootstrap();
        bootstrap.group(group)
                .channel(NioSocketChannel.class)
                .option(ChannelOption.TCP_NODELAY, true)
                .option(ChannelOption.SO_KEEPALIVE, true)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel socketChannel) throws Exception {
                        ChannelPipeline pipeline = socketChannel.pipeline();
                        pipeline.addLast("heart", new IdleStateHandler(0, 3, 0, TimeUnit.SECONDS));
                        pipeline.addLast("encoder", new MessageProtocolEncoder());
                        pipeline.addLast("decoder", new MessageProtocolDecoder());
                        pipeline.addLast("handler", clientHandler);
                    }
                });
        return bootstrap;
    }

    //   获取所有连接
    public void initAllChannel(List<Map<String, Object>> portHosts) {
        for (Map<String, Object> map : portHosts) {
            String host = (String) map.get("IP");
            Integer port = (Integer) map.get("PORT");
            initOneConnection(host, port);
        }
    }

    public void initOneConnection(String host, Integer port) {

        log.info("初始化连接天宇tcp服务器【{}:{}】", host, port);
        //判断该账号下，是否有盒子被控制
        //当前正在被控制的盒子
        String currentBoxSn = "";
        if (channels.containsKey(host + ":" + port)) {
            currentBoxSn = channels.get(host + ":" + port).getSubBoxSn();
            channels.get(host + ":" + port).getFuture().channel().close();
        }

        //异步连接tcp服务端
        Bootstrap bootstrap = getBootstrap(null);
        ChannelFuture future = bootstrap.connect(host, port).addListener((ChannelFuture futureListener) -> {
            if (futureListener.isSuccess()) {
                log.info("连接天宇TCP服务器成功【{}:{}】", host, port);
            } else {
                final EventLoop eventLoop = futureListener.channel().eventLoop();
                eventLoop.schedule(() -> {
                    log.info("连接天宇TCP服务器失败【{}:{}】,正尝试重连...", host, port);
                    try {
                        initOneConnection(host, port);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }, 5, TimeUnit.SECONDS);
            }
        });

        //判断是否有盒子被订阅
        channels.put(host + ":" + port, TyBoxSession.builder().subBoxSn(currentBoxSn).future(future)
                .isReConnect(!currentBoxSn.equals("")).build());
    }
}