package com.muyu.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.muyu.domain.Vehicle;
import com.muyu.mapper.VehicleMapper;
import com.muyu.service.VehicleInstanceService;
import com.muyu.service.VehicleService;
import com.muyu.vehicle.VehicleInstance;
import com.muyu.vehicle.core.LocalContainer;
import lombok.extern.log4j.Log4j2;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Stream;

/**
 * <p>
 * 车辆 服务实现类
 * </p>
 *
 * @author DongZeLiang
 * @since 2022-07-05
 */
@Log4j2
@Service
public class VechileServiceImpl extends ServiceImpl<VehicleMapper, Vehicle> implements VehicleService {


    @Autowired
    private VehicleInstanceService vehicleInstanceService;

    /**
     * 根据数量生成测试车辆
     *
     * @param sum 数量
     */
    @Override
    @Transactional
    public void generate (Integer sum) {
        List<Vehicle> vehicleList = Stream.generate(Vehicle::gen).limit(sum).toList();
        this.saveBatch(vehicleList);
        vehicleList.forEach(vehicleInstanceService::init);
    }

    /**
     * 创建IVN
     *
     * @param vinStr VIN
     */
    @Override
    @Transactional
    public void create (String vinStr) {
        String[] vinList = vinStr.split("\n");
        StringBuilder errorMsg = new StringBuilder();
        for (String vin : vinList) {
            if (vin.length() != 17) {
                errorMsg.append("vin[").append(vin).append("]").append("不为17位\n");
            } else {
                LambdaQueryWrapper<Vehicle> queryWrapper = new LambdaQueryWrapper<>();
                queryWrapper.eq(Vehicle::getVin, vin);
                long count = this.count(queryWrapper);
                if (count == 1) {
                    errorMsg.append("vin[").append(vin).append("]").append("已经存在\n");
                }
            }
        }
        if (!errorMsg.isEmpty()) {
            throw new RuntimeException(errorMsg.toString());
        }
        List<Vehicle> vehicleList = Arrays.stream(vinList).map(Vehicle::create).toList();
        this.saveBatch(vehicleList);
        vehicleList.forEach(vehicleInstanceService::init);
    }

    /**
     * 同步数据库
     */
    @Override
    public void syncDb () {
        try {
//            vehicleInstanceService.isTaskStatus();
            log.info("同步数据库开始");
            long startTime = System.currentTimeMillis();
            Collection<VehicleInstance> vehicleInstanceList = LocalContainer.getOnlineVehicleInstance();
            // 成功数量
            AtomicInteger syncSuccessSum = new AtomicInteger();
            List<Vehicle> vehicleList = vehicleInstanceList.stream()
                    .filter(VehicleInstance::isOnline)
                    .map(Vehicle::instanceBuild)
                    .toList();
            vehicleList.forEach(vehicle -> {
                LambdaUpdateWrapper<Vehicle> updateWrapper = new LambdaUpdateWrapper<>();
                updateWrapper.set(Vehicle::getRemainingBattery, vehicle.getRemainingBattery());
                updateWrapper.set(Vehicle::getTotalMileage, vehicle.getTotalMileage());
                updateWrapper.eq(Vehicle::getVin, vehicle.getVin());
                try {
                    this.update(updateWrapper);
                    syncSuccessSum.incrementAndGet();
                    log.debug("车辆：[{}] - 数据同步成功 - 电池容量：[{}毫安] 总公里数量：[{}KM]", vehicle.getVin(), vehicle.getRemainingBattery(), vehicle.getTotalMileage());
                }catch (Exception exception){
                    log.error("车辆：[{}] - 数据同步失败 - 电池容量：[{}毫安] 总公里数量：[{}KM]", vehicle.getVin(), vehicle.getRemainingBattery(), vehicle.getTotalMileage());
                }
            });
            log.info("同步数据库结束 - 耗时：[{}MS]，同步量：[{}辆]，成功：[{}辆]，失败：[{}辆]",
                    System.currentTimeMillis() - startTime, vehicleList.size(),syncSuccessSum.get(), vehicleList.size() - syncSuccessSum.get());
        }catch (Exception exception){
            log.error("数据同步异常：{}", exception.getMessage(), exception);
        }
    }

    /**
     * 通过VIN删除车辆
     *
     * @param vin vin
     */
    @Override
    public void delete(String vin) {
        VehicleInstance vehicleInstance = LocalContainer.getVehicleInstance(vin);
        // 先判断车辆是否在上报数据，上报则停止
        if (vehicleInstance.isSend()){
            vehicleInstance.stopSend();
        }
        // 判断车辆是否在线，若在线则让车辆下线
        if (vehicleInstance.isOnline()){
            vehicleInstance.closeClient();
        }
        // 进行缓存删除
        LocalContainer.removeByVin(vin);
        // 删除数据库
        this.removeById(vin);
    }



}