package com.xcong.excoin.netty.common;

import com.alibaba.fastjson.JSONObject;
import com.xcong.excoin.netty.bean.ResponseBean;
import io.netty.channel.Channel;
import io.netty.channel.ChannelId;
import io.netty.channel.group.ChannelGroup;
import io.netty.channel.group.DefaultChannelGroup;
import io.netty.util.concurrent.GlobalEventExecutor;

import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

/**
 * @author wzy
 * @email wangdoubleone@gmail.com
 * @date 2019-05-06
 */
public class ChannelManager {

    private static final ChannelGroup WEBSOCKET_GROUP = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);

    private static final ChannelGroup TCP_GROUP = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);

    private static final ConcurrentMap<String, ChannelGroup> DEPTH_MAP = new ConcurrentHashMap<>();

    private static final ConcurrentMap<String, ChannelGroup> TRADE_MAP = new ConcurrentHashMap<>();

    private static final ConcurrentMap<String, ChannelGroup> KLINE_MAP = new ConcurrentHashMap<>();

    // 当前连接到服务器的通道(tcp和websocket)
    private static final ConcurrentMap<String, ChannelId> CHANNEL_MAP = new ConcurrentHashMap<>();


    public static void addTcpChannel(Channel channel) {
        TCP_GROUP.add(channel);
    }

    public static void removeTcpChannel(Channel channel) {
        TCP_GROUP.remove(channel);
    }

    public static void addWebSocketChannel(Channel channel) {
        WEBSOCKET_GROUP.add(channel);
        CHANNEL_MAP.put(channel.id().asShortText(), channel.id());
    }

    public static ChannelGroup getTcpGroup() {
        return TCP_GROUP;
    }

    public static void removeWebSocketChannel(Channel channel) {
        WEBSOCKET_GROUP.remove(channel);
        CHANNEL_MAP.remove(channel.id().asShortText());
    }

    public static Channel findWebSocketChannel(String id){
        ChannelId channelId = CHANNEL_MAP.get(id);
        return WEBSOCKET_GROUP.find(channelId);
    }

    public static ChannelGroup getWebSocketGroup() {
        return WEBSOCKET_GROUP;
    }

    public static void send2All(Object object, String type) {
        if (WEBSOCKET_GROUP.size() == 0) {
            return;
        }
        ResponseBean responseBean = ResponseBean.ok(type, null);
        responseBean.putInfo("data", object);
        String msg = JSONObject.toJSONString(responseBean);
        WEBSOCKET_GROUP.writeAndFlush(NettyTools.webSocketBytes(msg));
    }

    public static void putSymbolSubChannel(@NotBlank String symbol, @NotNull Channel channel, @NotBlank String type) {
        String t = "";
        if (type.contains("depth")) {
            String[] s = type.split("_");
            type = s[0];
            t = s[1];
        }
        switch (type) {
            case "kline" :
                ChannelGroup kline = KLINE_MAP.get(symbol);
                if (kline == null) {
                    kline = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
                }
                kline.add(channel);
                KLINE_MAP.put(symbol, kline);
                break;
            case "depth" :
                String key = symbol + "_" + t;
                ChannelGroup depth = DEPTH_MAP.get(key);
                if (depth == null) {
                    depth = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
                }
                depth.add(channel);
                DEPTH_MAP.put(key, depth);
                break;
            case "trade" :
                ChannelGroup trade = TRADE_MAP.get(symbol);
                if (trade == null) {
                    trade = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
                }
                trade.add(channel);
                TRADE_MAP.put(symbol, trade);
                break;
            default:
                break;
        }
    }

    public static void removeSymbolUnSubChannel(@NotBlank String symbol, @NotNull Channel channel, @NotBlank String type) {
        String t = "";
        if (type.contains("depth")) {
            String[] s = type.split("_");
            type = s[0];
            t = s[1];
        }
        switch (type) {
            case "kline" :
                ChannelGroup kline = KLINE_MAP.get(symbol);
                if (kline == null) {
                    return;
                }
                kline.remove(channel);
                KLINE_MAP.put(symbol, kline);
                break;
            case "depth" :
                String key = symbol + "_" + t;
                ChannelGroup depth = DEPTH_MAP.get(key);
                if (depth == null) {
                    return;
                }
                depth.remove(channel);
                DEPTH_MAP.put(key, depth);
                break;
            case "trade" :
                ChannelGroup trade = TRADE_MAP.get(symbol);
                if (trade == null) {
                    return;
                }
                trade.remove(channel);
                TRADE_MAP.put(symbol, trade);
                break;
            default:
                break;
        }
    }

    public static ChannelGroup getChannelGroup(@NotBlank String symbol, @NotBlank String type) {
        switch (type) {
            case "kline" :
                return KLINE_MAP.get(symbol);
            case "depth" :
                return DEPTH_MAP.get(symbol);
            case "trade" :
                return TRADE_MAP.get(symbol);
            default:
                return new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
        }
    }

}