package com.maibu.service;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.maibu.core.business.Device;
import com.maibu.core.business.device.NettyDevice;
import com.maibu.core.domain.AjaxResult;
import com.maibu.core.domain.entity.UserClient;
import com.maibu.core.domain.model.LoginUser;
import com.maibu.core.enums.ConnectorStatus;
import com.maibu.exception.ServiceException;
import com.maibu.mapper.DeviceMapper;
import com.maibu.mapper.SysUserClientMapper;
import com.maibu.memory.DeviceSessionManager;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import com.maibu.dto.*;

import java.time.LocalDateTime;
import java.util.Date;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

@Service
@Slf4j
public class TransferDeviceService {

    @Autowired
    private IDeviceService iDeviceService;

    @Autowired
    private ISysUserClientService sysUserClientService;

    @Autowired
    private DeviceSessionManager sessionManager;

    @Autowired
    private SysUserClientMapper userClientMapper;

    @Autowired
    private DeviceMapper deviceMapper;


    public AjaxResult bind(DeviceBindDTO bindDTO, LoginUser user) {
        try {
            String deviceId = bindDTO.getDeviceId();
            String deviceAlias = bindDTO.getDeviceAlias();
            //判断当前设备是否存
            Device device = iDeviceService.selectDeviceBySerialNumber(deviceId);
            if (device == null) {
                return AjaxResult.error("设备不存在");
            } else {
                Long tenantId = device.getTenantId();
                if (tenantId != -1) {
                    if (!tenantId.equals(user.getUserId())) {
                        return AjaxResult.error("设备有其他用户绑定");
                    }
                }
                device.setTenantId(user.getUserId());
                device.setTenantName(user.getUsername());
                device.setUpdateTime(LocalDateTime.now());
                device.setDeviceAlias(deviceAlias);
                device.setActiveTime(new Date());
                iDeviceService.updateDeviceBySelf(device);
//                deviceMapper.updateById(device);
                return AjaxResult.success(true);
            }
        } catch (Exception e) {
            log.error("设备绑定失败: {}", e.getMessage(), e);
            return AjaxResult.error("设备绑定失败：" + e.getMessage());
        }
    }

    public AjaxResult unbind(DeviceBindDTO bindDTO, LoginUser user) {
        try {
            String deviceId = bindDTO.getDeviceId();
            //判断当前设备是否存
            Device device = iDeviceService.selectDeviceBySerialNumber(deviceId);
            if (device == null) {
                return AjaxResult.error("设备不存在");
            } else {
                Long tenantId = device.getTenantId();
                if (tenantId == -1) {
                    return AjaxResult.error("设备未绑定");
                }
                if (!tenantId.equals(user.getUserId())) {
                    return AjaxResult.error("无解绑权限");
                }
                device.setTenantId(-1L);
                device.setTenantName("");
                device.setUpdateTime(LocalDateTime.now());
                device.setDeviceAlias("");
//                deviceMapper.updateById(device);
                iDeviceService.updateDeviceBySelf(device);
                //判断是否正在控制 如果正在控制，删除控制状态
                LambdaQueryWrapper<UserClient> lambdaWrapper = new LambdaQueryWrapper<>();
                lambdaWrapper.eq(UserClient::getDeviceName, deviceId);
                List<UserClient> users = userClientMapper.selectList(lambdaWrapper);
                log.info("users:{}", users);
                if (!CollectionUtils.isEmpty(users)) {
                    users.forEach(userClient -> {
                        log.info("userClient:{}", userClient);
                        if (userClient != null) {
                            String masterId = userClient.getClientName();
                            NettyDevice deviceMaster = sessionManager.getDevice(masterId);
                            if (deviceMaster != null) {
                                String oldSlave = userClient.getDeviceName();
                                //删除主的连接关系
                                deviceMaster.getConnectedConnectors().removeIf(x -> x.getConnectorId().equals(oldSlave));
                                //删除从的连接关系
                                NettyDevice oldSlaveDevice = sessionManager.getDevice(oldSlave);
                                if (oldSlaveDevice != null && !CollectionUtils.isEmpty(oldSlaveDevice.getConnectedConnectors())) {
                                    Set<com.maibu.core.business.device.Connector> connectedDevices = oldSlaveDevice.getConnectedConnectors();
                                    connectedDevices.removeIf(x -> x.getConnectorId().equals(masterId));
                                }
                            }
                            sysUserClientService.updateAliveStatus(masterId, "", 0);
                            log.info("updateById:{}", userClient.getClientName());
                        }
                    });
                }
                return AjaxResult.success(true);
            }
        } catch (Exception e) {
            log.error("设备解绑失败: {}", e.getMessage(), e);
            return AjaxResult.error("设备解绑失败：" + e.getMessage());
        }
    }


    public AjaxResult updateDeviceAlias(DeviceBindDTO bindDTO, LoginUser user) {
        try {
            String deviceId = bindDTO.getDeviceId();
            //判断当前设备是否存
            Device device = iDeviceService.selectDeviceBySerialNumber(deviceId);
            if (device == null) {
                return AjaxResult.error("设备不存在");
            } else {
                // Long tenantId = device.getTenantId();
                // if (tenantId == -1) {
                //     return AjaxResult.error("设备未绑定");
                // }
                // if (!tenantId.equals(user.getUserId())) {
                //     return AjaxResult.error("无操作权限");
                // }
                device.setDeviceAlias(bindDTO.getDeviceAlias());
                device.setUpdateTime(LocalDateTime.now());
                device.setCreateBy(user.getUsername());
                iDeviceService.updateDeviceBySelf(device);
                return AjaxResult.success(true);
            }
        } catch (Exception e) {
            log.error("设备更新失败: {}", e.getMessage(), e);
            return AjaxResult.error("设备更新失败：" + e.getMessage());
        }
    }

//    public synchronized boolean switchDevice(DeviceBindDTO bindDTO, LoginUser user) {
//        try {
//            String slaveId = bindDTO.getDeviceId();
//            String platform = bindDTO.getPlatform();
//            String userName = user.getUsername();
//            String masterId = userName + ":" + platform;
//            //todo 判断是否有权限 正在控制才能切
//            //todo 离线没有控制权的怎么切
//            log.info("switchDevice:{}", masterId);
//            NettyDevice deviceMaster = sessionManager.getDevice(masterId);
//            log.info("deviceMaster:{}", deviceMaster);
//            if (deviceMaster != null) {
//                log.info("ConnectorStatus:{}", deviceMaster.getConnectorStatus());
//                if (ConnectorStatus.RECEIVER.equals(deviceMaster.getConnectorStatus())) {
//                    //当前账号没有控制则可以切换为控制？
//                    NettyDevice activeDevice = sessionManager.getUserControl(userName);
//                    deviceMaster.getConnectedConnectors().clear();
//                    if (activeDevice == null) {
//                        log.info("bindConnector ACTIVE :{}", masterId);
//                        sessionManager.bindConnector(masterId, slaveId);
//                        deviceMaster.setConnectorStatus(ConnectorStatus.ACTIVE);
//                        deviceMaster.setCurrentSlaveId(slaveId);
//                        sysUserClientService.updateAliveStatus(masterId, slaveId, 1);
//                    } else {
//                        log.info("bindConnector RECEIVER :{}", masterId);
//                        sessionManager.bindConnector(masterId, slaveId);
//                        deviceMaster.setConnectorStatus(ConnectorStatus.RECEIVER);
//                        deviceMaster.setCurrentSlaveId(slaveId);
//                        sysUserClientService.updateAliveStatus(masterId, slaveId, 2);
//                    }
//                } else {
//                    //从关联其他设备切换到  当前禁言 假如有控制且不是当前更新为2
//                    List<NettyDevice> controls = sessionManager.getSlaveControl(slaveId);
//                    if (CollectionUtils.isEmpty(controls)) {
//                        deviceMaster.getConnectedConnectors().clear();
//                        log.info("bindConnector 1:{}", masterId);
//                        sessionManager.bindConnector(masterId, slaveId);
//                        deviceMaster.setConnectorStatus(ConnectorStatus.ACTIVE);
//                        deviceMaster.setCurrentSlaveId(slaveId);
//                        sysUserClientService.updateAliveStatus(masterId, slaveId, 1);
//                    } else {
//                        NettyDevice controlDevice = controls.get(0);
//                        if (!masterId.equals(controlDevice.getConnectorId())) {
//                            //当前的设备有控制 的主机
//                            deviceMaster.getConnectedConnectors().clear();
//                            log.info("bindConnector RECEIVER 2:{}", masterId);
//                            sessionManager.bindConnector(masterId, slaveId);
//                            deviceMaster.setConnectorStatus(ConnectorStatus.RECEIVER);
//                            deviceMaster.setCurrentSlaveId(slaveId);
//                            sysUserClientService.updateAliveStatus(masterId, slaveId, 2);
//                        }
//                        //当前 切当前不做操作
//                    }
//                }
//                return true;
//            }
//        } catch (Exception e) {
//            log.error("切换设备失败: {}", e.getMessage(), e);
//        }
//        return false;
//    }

    public synchronized boolean switchDevice(DeviceBindDTO bindDTO) {
        try {
            String slaveId = bindDTO.getDeviceId();
//            String platform = bindDTO.getPlatform();
//            String userName = user.getUsername();

//            String masterId = userName + ":" + platform;


            String token = bindDTO.getToken();

            log.info("switchDevice slaveId:{},token:{}", slaveId, token);
            NettyDevice deviceMaster = sessionManager.getDevice(token);
            log.info("switchDevice deviceMaster:{}", deviceMaster);
            if (deviceMaster == null) {
                throw new ServiceException("功能码当前账号未发送登录请求，不在线");
            }

            List<NettyDevice> controls = sessionManager.getAllSlaveControl(slaveId);
            if (CollectionUtils.isEmpty(controls)) {
                deviceMaster.getConnectedConnectors().clear();
                sessionManager.bindConnector(token, slaveId);
                deviceMaster.setConnectorStatus(ConnectorStatus.ACTIVE);
                deviceMaster.setCurrentSlaveId(slaveId);
                sessionManager.lock(slaveId, token);
                log.info("switchDevice bindConnector slaveId:{},token:{}", slaveId, token);
            } else {
                List<String> connectorIds = controls.stream().map(NettyDevice::getConnectorId).collect(Collectors.toList());
                if (!connectorIds.contains(token)) {
                    //当前的设备有控制 的主机
                    deviceMaster.getConnectedConnectors().clear();
                    sessionManager.bindConnector(token, slaveId);
                    deviceMaster.setConnectorStatus(ConnectorStatus.RECEIVER);
                    deviceMaster.setCurrentSlaveId(slaveId);
                    log.info("switchDevice bindConnector RECEIVER :{}", token);
                } else {
                    deviceMaster.setConnectorStatus(ConnectorStatus.ACTIVE);
                    deviceMaster.setCurrentSlaveId(slaveId);
                    sessionManager.lock(slaveId, token);
                }
                //当前 切当前不做操作
            }
            return true;
        } catch (Exception e) {
            log.error("切换设备失败: {}", e.getMessage(), e);
        }
        return false;
    }


    public DeviceControlDTO remoteControl(DeviceBindDTO bindDTO) {
        try {
            String token = bindDTO.getToken();
            String masterToken = sessionManager.getMaster(bindDTO.getDeviceId());
            DeviceControlDTO dto = new DeviceControlDTO();
            if (!StringUtils.isEmpty(token) && token.equals(masterToken)) {
                dto.setRemoteControl(true);
                dto.setOwner("you");
            } else {
                dto.setRemoteControl(false);
                dto.setReason("occupied");
                dto.setOwner(masterToken);
            }
            return dto;
        } catch (Exception e) {
            log.error("获取设备权限失败", e);
        }
        return null;
    }


    public DeviceSwitchControlDTO switchControl(DeviceBindDTO bindDTO, LoginUser user) {
        try {
            String slaveId = bindDTO.getDeviceId();
            String platform = bindDTO.getPlatform();
            String userName = user.getUsername();
            String masterId = userName + ":" + platform;

            DeviceSwitchControlDTO dto = new DeviceSwitchControlDTO();
            //收到明确的切换设备请求了 从哪边切换到另一边
            //判断当前是否有控制的设备
            NettyDevice masterDevice = sessionManager.getDevice(masterId);
            if (masterDevice == null || !masterDevice.getChannel().isActive()) {
                //主机已离线
                dto.setSwitchControl(false);
                dto.setReason("主机已离线");
                return dto;
            }

            NettyDevice slaveDevice = sessionManager.getDevice(slaveId);
            if (slaveDevice == null || !masterDevice.getChannel().isActive()) {
                //从机已离线
                //主机已离线
                dto.setSwitchControl(false);
                dto.setReason("从机已离线");
                return dto;
            }

            List<NettyDevice> controlList = sessionManager.getSlaveControl(slaveId);

            if (!CollectionUtils.isEmpty(controlList)) {
                //如果当前设备有控制
                controlList.forEach(c -> {
                    if (!c.getConnectorId().equals(masterId)) {
                        c.setCurrentSlaveId(null);
                        c.removeConnectedDevice(slaveDevice);
                        c.setConnectorStatus(ConnectorStatus.RECEIVER);
                        sysUserClientService.updateAliveStatus(c.getConnectorId(), slaveId, 2);
                    }
                });
            }
            masterDevice.setCurrentSlaveId(slaveId);
            masterDevice.setConnectorStatus(ConnectorStatus.ACTIVE);
            sysUserClientService.updateAliveStatus(masterDevice.getConnectorId(), slaveId, 1);

            dto.setSwitchControl(true);
            dto.setHolder(platform);
            return dto;
        } catch (Exception e) {
            log.error(e.getMessage());
            return new DeviceSwitchControlDTO(false);
        }
    }

    public void releaseControl(DeviceBindDTO bindDTO, LoginUser user) {
        try {
            String platform = bindDTO.getPlatform();
            String userName = user.getUsername();
            String masterId = userName + ":" + platform;
            Integer type = bindDTO.getType();
            NettyDevice deviceMaster = sessionManager.getDevice(masterId);
            if (type != null && deviceMaster != null) {
                if (type == 1) {
                    deviceMaster.setCurrentSlaveId(null);
                    deviceMaster.getConnectedConnectors().clear();
                } else if (type == 2) {
                    deviceMaster.setConnectorStatus(ConnectorStatus.RECEIVER);
                }
            }
            sessionManager.unLock(bindDTO.getDeviceId(), bindDTO.getToken(), false);
        } catch (Exception e) {
            log.error(e.getMessage());
        }
    }

}