package com.zy.core.network;

import com.zy.asrs.entity.DeviceConfig;
import com.zy.common.utils.RedisUtil;
import com.zy.core.ThreadHandler;
import com.zy.core.enums.RedisKeyType;
import com.zy.core.model.CommandResponse;
import com.zy.core.model.command.StationCommand;
import com.zy.core.network.api.ZyStationConnectApi;
import com.zy.core.network.entity.ZyStationStatusEntity;
import java.util.List;
import com.zy.core.network.fake.ZyStationFakeConnect;
import com.zy.core.network.fake.ZyStationFakeSegConnect;
import com.zy.core.network.fake.ZyStationV4FakeSegConnect;
import com.zy.core.network.real.ZyStationRealConnect;
import com.zy.core.network.real.ZyStationV3RealConnect;
import com.zy.core.network.real.ZyStationV4RealConnect;
import lombok.extern.slf4j.Slf4j;
import java.util.Collections;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;

/**
 * 输送站连接驱动
 */
@Slf4j
public class ZyStationConnectDriver implements ThreadHandler {

    private static final ZyStationFakeConnect zyStationFakeConnect = new ZyStationFakeConnect();
    private static final ZyStationFakeSegConnect zyStationFakeSegConnect = new ZyStationFakeSegConnect();
    private static final ZyStationV4FakeSegConnect zyStationV4FakeSegConnect = new ZyStationV4FakeSegConnect();

    private volatile boolean connected = false;
    private volatile boolean connecting = false;
    private DeviceConfig deviceConfig;
    private RedisUtil redisUtil;
    private volatile ZyStationConnectApi zyStationConnectApi;
    private volatile boolean closed = false;
    private ScheduledExecutorService executor;
    private final Object connectLock = new Object();

    public ZyStationConnectDriver(DeviceConfig deviceConfig, RedisUtil redisUtil) {
        this.deviceConfig = deviceConfig;
        this.redisUtil = redisUtil;
    }

    @Override
    public void run() {
        
    }

    @Override
    public boolean connect() {
        synchronized (connectLock) {
            if (closed) {
                return false;
            }
            if (connected && zyStationConnectApi != null) {
                return true;
            }

            connecting = true;
            try {
                ZyStationConnectApi connectApi;
                if (deviceConfig.getFake() == 0) {
                    if ("ZyStationV3Thread".equals(deviceConfig.getThreadImpl())) {
                        connectApi = new ZyStationV3RealConnect(deviceConfig, redisUtil);
                    } else if ("ZyStationV4Thread".equals(deviceConfig.getThreadImpl())) {
                        connectApi = new ZyStationV4RealConnect(deviceConfig, redisUtil);
                    } else {
                        connectApi = new ZyStationRealConnect(deviceConfig, redisUtil);
                    }
                } else {
                    if ("ZyStationV3Thread".equals(deviceConfig.getThreadImpl())) {
                        zyStationFakeSegConnect.addFakeConnect(deviceConfig, redisUtil);
                        connectApi = zyStationFakeSegConnect;
                    } else if ("ZyStationV4Thread".equals(deviceConfig.getThreadImpl())) {
                        zyStationV4FakeSegConnect.addFakeConnect(deviceConfig, redisUtil);
                        connectApi = zyStationV4FakeSegConnect;
                    } else {
                        zyStationFakeConnect.addFakeConnect(deviceConfig, redisUtil);
                        connectApi = zyStationFakeConnect;
                    }
                }

                boolean connect = connectApi.connect();
                connected = connect;
                if (connect) {
                    zyStationConnectApi = connectApi;
                } else {
                    zyStationConnectApi = null;
                }
                return connect;
            } finally {
                connecting = false;
            }
        }
    }

    @Override
    public void close() {
        closed = true;
        ScheduledExecutorService ex = executor;
        if (ex != null) {
            try { ex.shutdownNow(); } catch (Exception ignore) {}
        }
        ZyStationConnectApi connectApi = zyStationConnectApi;
        if (connectApi != null) {
            connectApi.disconnect();
            zyStationConnectApi = null;
        }
        connected = false;
        connecting = false;
    }

    public void start() {
        executor = Executors.newSingleThreadScheduledExecutor(new ThreadFactory() {
            @Override
            public Thread newThread(Runnable r) {
                Thread t = new Thread(r);
                t.setName("DevpConnect-" + deviceConfig.getDeviceNo());
                t.setDaemon(true);
                return t;
            }
        });
        
        executor.scheduleAtFixedRate(() -> {
            if (closed || Thread.currentThread().isInterrupted()) {
                return;
            }
            try {
                if (!connected) {
                    connect();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }, 0, 1000, TimeUnit.MILLISECONDS);
    }

    public List<ZyStationStatusEntity> getStatus() {
        ZyStationConnectApi connectApi = zyStationConnectApi;
        if (!connected || connecting || connectApi == null) {
            return Collections.emptyList();
        }
        return connectApi.getStatus(deviceConfig.getDeviceNo());
    }

    public CommandResponse sendCommand(StationCommand command) {
        ZyStationConnectApi connectApi = zyStationConnectApi;
        if (!connected || connecting || connectApi == null) {
            return new CommandResponse(false, "设备未连接，命令下发失败");
        }
        while (true) {
            Object lock = redisUtil.get(RedisKeyType.STATION_EXECUTE_COMMAND_LOCK.key);
            if(lock != null) {
                try {
                    Thread.sleep(500);
                }catch (Exception e) {
                    e.printStackTrace();
                }
            }else {
                redisUtil.set(RedisKeyType.STATION_EXECUTE_COMMAND_LOCK.key, "lock", 60 * 5);
                break;
            }
        }
        CommandResponse commandResponse = connectApi.sendCommand(deviceConfig.getDeviceNo(), command);
        redisUtil.del(RedisKeyType.STATION_EXECUTE_COMMAND_LOCK.key);
        return commandResponse;
    }

    public CommandResponse sendOriginCommand(String address, short[] data) {
        ZyStationConnectApi connectApi = zyStationConnectApi;
        if (!connected || connecting || connectApi == null) {
            return new CommandResponse(false, "设备未连接，原始命令下发失败");
        }
        return connectApi.sendOriginCommand(address, data);
    }

    public byte[] readOriginCommand(String address, int length) {
        ZyStationConnectApi connectApi = zyStationConnectApi;
        if (!connected || connecting || connectApi == null) {
            return new byte[0];
        }
        return connectApi.readOriginCommand(address, length);
    }
}