package com.zy.acs.manager.core.scheduler;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.zy.acs.manager.core.domain.AgvTaskDto;
import com.zy.acs.manager.core.service.MainLockWrapService;
import com.zy.acs.manager.core.service.MainService;
import com.zy.acs.manager.core.service.TrafficService;
import com.zy.acs.manager.manager.entity.Bus;
import com.zy.acs.manager.manager.entity.Segment;
import com.zy.acs.manager.manager.entity.Task;
import com.zy.acs.manager.manager.enums.ActionStsType;
import com.zy.acs.manager.manager.enums.BusStsType;
import com.zy.acs.manager.manager.enums.SegmentStateType;
import com.zy.acs.manager.manager.enums.TaskStsType;
import com.zy.acs.manager.manager.service.*;
import com.zy.acs.manager.system.service.ConfigService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.context.event.EventListener;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import javax.annotation.PreDestroy;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantLock;

/**
 * to judgement agv idle status when generate action !!!
 * Created by vincent on 2023/6/18
 */
@Slf4j
@Component
public class KernelScheduler {

    public static int CORE_SCAN_FREQUENCY_MILLISECOND = 15;

    private static final int LOCK_TIMEOUT = 5;

    private final ReentrantLock lock = new ReentrantLock(Boolean.TRUE);

    private Thread trafficCalcThread;

    private Thread actionPublicThread;

    @Autowired
    private AgvService agvService;
    @Autowired
    private BusService busService;
    @Autowired
    private TaskService taskService;
    @Autowired
    private MainService mainService;
    @Autowired
    private MainLockWrapService mainLockWrapService;
    @Autowired
    private ActionService actionService;
    @Autowired
    private SegmentService segmentService;
    @Autowired
    private TrafficService trafficService;
    @Autowired
    private ConfigService configService;
    @Autowired
    private LocService locService;
    @Autowired
    private AgvModelService agvModelService;

    @Scheduled(cron = "0/1 * * * * ? ")
    private void startupBus() throws InterruptedException {
//        if (!configService.getVal("TaskAssignMode", Boolean.class)) { return; }
        if (!this.lock.tryLock(LOCK_TIMEOUT, TimeUnit.SECONDS)) { return; }
        List<Bus> busList = busService.selectInSts(BusStsType.RECEIVE, BusStsType.PROGRESS);
        for (Bus bus : busList) {
            mainService.allocateTask(bus);
        }
        this.lock.unlock();
    }

    @Scheduled(cron = "0/1 * * * * ? ")
    private void calculateSeg() throws InterruptedException {
        if (!this.lock.tryLock(LOCK_TIMEOUT, TimeUnit.SECONDS)) { return; }
        List<Task> taskList = taskService.selectBySts(TaskStsType.WAITING);

        List<AgvTaskDto> taskDtoList = new ArrayList<>();
        for (Task task : taskList) {
            AgvTaskDto taskDto = new AgvTaskDto(task.getAgvId(), task);
            if (AgvTaskDto.has(taskDtoList, taskDto)) {
                AgvTaskDto dto = AgvTaskDto.find(taskDtoList, taskDto);
                assert dto != null;
                dto.getTaskList().add(task);
            } else {
                taskDtoList.add(taskDto);
            }
        }

        for (AgvTaskDto dto : taskDtoList) {
            mainLockWrapService.buildMajorTask(dto.getAgvId(), dto.getTaskList());
        }
        this.lock.unlock();
    }

    @EventListener(ApplicationReadyEvent.class)
    public void init() {
        try { Thread.sleep(1200); } catch (InterruptedException ignore) {}
        // traffic calculate
        this.trafficCalcThread = new Thread(() -> {
            while (!Thread.currentThread().isInterrupted()) {
                try {
                    Thread.sleep(CORE_SCAN_FREQUENCY_MILLISECOND);

                    List<Segment> segments = segmentService.list(new LambdaQueryWrapper<Segment>()
                            .eq(Segment::getState, SegmentStateType.WAITING.toString())
                    );
                    for (Segment segment : segments) {
                        long startTime = System.currentTimeMillis();
                        trafficService.trigger(segment);
//                        log.info("traffic calculation spend {} ms", System.currentTimeMillis() - startTime);
                    }

                } catch (Exception e) {
                    log.error("KernelScheduler.trafficCalcThread fail", e);
                }
            }
        });
        this.trafficCalcThread.start();
        // public action
        this.actionPublicThread = new Thread(() -> {
            while (!Thread.currentThread().isInterrupted()) {
                try {
                    Thread.sleep(CORE_SCAN_FREQUENCY_MILLISECOND);

                    List<String> actionGroupIds = actionService.selectGroupNo(ActionStsType.PREPARE);
                    for (String actionGroupId : actionGroupIds) {
                        mainService.publishAction(actionGroupId);
                    }

                } catch (Exception e) {
                    log.error("KernelScheduler.actionPublicThread fail", e);
                }
            }
        });
        this.actionPublicThread.start();
    }


    // patch ----------------------------------------------------------------------------------------------

    @Scheduled(cron = "0/3 * * * * ? ")
    private void busFinishPatch(){
        List<Bus> busList = busService.selectBySts(BusStsType.PROGRESS);
        for (Bus bus : busList) {
            boolean finish = true;
            List<Task> taskList = taskService.list(new LambdaQueryWrapper<Task>().eq(Task::getBusId, bus.getId()));
            for (Task task : taskList) {
                if (!task.getTaskSts().equals(TaskStsType.COMPLETE.val())) {
                    finish = false;
                    break;
                }
            }
            if (finish) {
                bus.setBusSts(BusStsType.FINISH.val());
                bus.setEndTime(new Date());
                bus.setUpdateTime(new Date());
                if (!busService.updateById(bus)) {
                    log.error("Bus [{}] 更新失败 ！！！", bus.getUuid());
                }
            }
            long cancelNum = taskList.stream().filter(task -> TaskStsType.CANCEL.val() == task.getTaskSts()).count();
            if (cancelNum == taskList.size()) {
                bus.setBusSts(BusStsType.CANCEL.val());
                bus.setUpdateTime(new Date());
                if (!busService.updateById(bus)) {
                    log.error("Bus [{}] 更新失败 ！！！", bus.getUuid());
                }
            }
        }
    }


    @PreDestroy
    public void shutDown(){
        if (this.trafficCalcThread != null) {
            this.trafficCalcThread .interrupt();
        }
        if (this.actionPublicThread != null) {
            this.actionPublicThread .interrupt();
        }
    }

}