package com.example.agvcontroller.socket;



import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import android.util.Log;

import com.example.agvcontroller.Item;
import com.example.agvcontroller.MainActivity;
import com.example.agvcontroller.action.AGV_11_UP;
import com.example.agvcontroller.action.AckMsgBuilder;
import com.example.agvcontroller.met.AbstractInboundHandler;
import com.example.agvcontroller.protocol.AGV_12_UP;
import com.example.agvcontroller.protocol.AGV_13_UP;
import com.example.agvcontroller.protocol.AGV_A1_DOWN;
import com.example.agvcontroller.protocol.AGV_F0_DOWN;
import com.example.agvcontroller.protocol.AGV_F0_UP;
import com.example.agvcontroller.protocol.AGV_F0_UP8;
import com.example.agvcontroller.protocol.AgvAction;
import com.example.agvcontroller.protocol.AgvPackage;
import com.example.agvcontroller.protocol.ProtocolType;


import org.greenrobot.eventbus.EventBus;

import java.util.concurrent.ConcurrentHashMap;

public class NettyServerHandler  extends AbstractInboundHandler<AgvPackage> {

    private static final String TAG = "NettyServerHandler";
    private static ConcurrentHashMap<String, Channel> channelMap = new ConcurrentHashMap<>();


    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
//        String clientId = ctx.channel().remoteAddress().toString();
//        channelMap.put(clientId, ctx.channel());
//        EventBus.getDefault().post(new Item("",clientId,"3"));
//        Log.d(TAG, "Client connected: " + clientId);
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        String clientId = ctx.channel().remoteAddress().toString();
        channelMap.remove(clientId);
        EventBus.getDefault().post(clientId);
        Log.d(TAG, "Client disconnected: " + clientId);
    }

//    @Override
//    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
//        // 处理接收到的消息
//        ByteBuf byteBuf = (ByteBuf) msg;
//        try {
//            while (byteBuf.isReadable()) {
//                byte[] bytes = new byte[byteBuf.readableBytes()];
//                byteBuf.readBytes(bytes);
//                String hexString = bytesToHex(bytes);
//                // 获取agv信息 添加到list中
//                Log.d(TAG, "ctx: " + ctx.channel().remoteAddress().toString() );
//                Log.d(TAG, "Received: " + hexString);
//            }
//        } finally {
//            byteBuf.release();
//        }
//    }

    @Override
    protected boolean channelRead0(ChannelHandlerContext ctx, AgvPackage pac) throws Exception {
        String clientId = ctx.channel().remoteAddress().toString();
        Log.i("clientId--->",clientId);
        Log.i("substring",pac.toString());
        String serialNum = pac.getBody().getMessageBody().getSerialNo();
        Log.i("substring",serialNum);
        MainActivity.map.put(serialNum, Boolean.TRUE);
        // ack
        ProtocolType ackType = isNeedAck(pac);
        final String uniqueNo = pac.getHeader().getUniqueNo();
        String agvNo;
        label : switch (pac.getHeader().getProtocolType()){
            case ACTION_COMPLETE:   // 动作完成数据包
                AGV_11_UP agv_11_up = (AGV_11_UP) pac.getBody().getMessageBody();
//                redis.push(RedisConstant.AGV_COMPLETE_FLAG, AgvProtocol.build(uniqueNo).setMessageBody(agv_11_up));
                // 动作完成应答
                if (null != ackType) {
                    AgvPackage ackPac = AckMsgBuilder.ofSuccess(pac, ackType);
                    AGV_A1_DOWN agv_a1_down = (AGV_A1_DOWN) ackPac.getBody().getMessageBody();
                    agv_a1_down.setAckSign((byte) agv_11_up.getCompleteCode());
                    ctx.writeAndFlush(ackPac);
                }
                break label;
            case DATA_CODE_REPORT:
                AGV_12_UP agv_12_up = (AGV_12_UP) pac.getBody().getMessageBody();
                agvNo = pac.getHeader().getUniqueNo();
                channelMap.put(clientId, ctx.channel());
                EventBus.getDefault().post(new Item("",clientId,agvNo));
                break label;
            case DATA_WITHOUT_CODE_REPORT:
                AGV_13_UP agv_13_up = (AGV_13_UP) pac.getBody().getMessageBody();
                agvNo = pac.getHeader().getUniqueNo();
                channelMap.put(clientId, ctx.channel());
                EventBus.getDefault().post(new Item("",clientId,agvNo));
                break label;
            case LOGIN_REPORT:
                AGV_F0_UP agv_f0_up = (AGV_F0_UP) pac.getBody().getMessageBody();
                if (null != ackType) {
                    AgvPackage ackPac = AckMsgBuilder.ofSuccess(pac, ackType);
                    AGV_F0_DOWN agv_f0_down = (AGV_F0_DOWN) ackPac.getBody().getMessageBody();
                    ctx.writeAndFlush(ackPac);
                }
                agvNo = pac.getHeader().getUniqueNo();
                channelMap.put(clientId, ctx.channel());
                EventBus.getDefault().post(new Item("",clientId,agvNo));
                break label;

        }
        return false;
    }

    private String bytesToHex(byte[] bytes) {
        StringBuilder sb = new StringBuilder();
        for (byte b : bytes) {
            sb.append(String.format("%02x", b));
        }
        return sb.toString();
    }
    // 将十六进制字符串转换为字节数组
    private byte[] hexStringToByteArray(String s) {
        int len = s.length();
        byte[] data = new byte[len / 2];
        for (int i = 0; i < len; i += 2) {
            data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
                    + Character.digit(s.charAt(i+1), 16));
        }
        return data;
    }

    public static void sendMessageToClient(String clientId, byte[] message) {
        Channel channel = channelMap.get(clientId);
        if (channel != null && channel.isActive()) {
            ByteBuf buf = Unpooled.wrappedBuffer(message);
            String upperCase = ByteBufUtil.hexDump(buf).toUpperCase();
            Log.d(TAG, "upperCase " + upperCase);
            channel.writeAndFlush(buf);
        } else {
            Log.d(TAG, "Client " + clientId + " is not connected");
        }
    }

    public static void sendMessageToClient(String clientId, AgvAction<?> action) {



        Channel channel = channelMap.get(clientId);
        if (channel != null && channel.isActive()) {

            channel.writeAndFlush(action);
        } else {
            Log.d(TAG, "Client " + clientId + " is not connected");
        }
    }

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

    /**
     * 服务器是否需要应答
     */
    public static ProtocolType isNeedAck(AgvPackage pac) {
        switch (pac.getHeader().getProtocolType()) {
            case ACTION_COMPLETE:
                return ProtocolType.ACTION_SUCCESS_ACK;
            case LOGIN_REPORT:
                return ProtocolType.LOGIN_ACK;
            default:
                return null;
        }
    }

}