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package com.ruoyi.safe.service.impl;
 
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.safe.mapper.SafeFacilityInspectionMapper;
import com.ruoyi.safe.mapper.SafeFacilityInspectionTaskMapper;
import com.ruoyi.safe.pojo.SafeFacilityInspection;
import com.ruoyi.safe.pojo.SafeFacilityInspectionTask;
import org.quartz.DisallowConcurrentExecution;
import org.quartz.Job;
import org.quartz.JobDataMap;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
 
import java.io.Serializable;
import java.time.DayOfWeek;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.YearMonth;
import java.time.format.DateTimeFormatter;
import java.util.HashSet;
import java.util.Set;
 
@Component
@DisallowConcurrentExecution
public class SafeFacilityInspectionTaskJob implements Job, Serializable {
 
    private static final long serialVersionUID = 1L;
    private static final DateTimeFormatter CODE_FORMATTER = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
 
    @Autowired
    private SafeFacilityInspectionTaskMapper safeFacilityInspectionTaskMapper;
    @Autowired
    private SafeFacilityInspectionMapper safeFacilityInspectionMapper;
 
    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        JobDataMap jobDataMap = context.getJobDetail().getJobDataMap();
        Long taskId = jobDataMap.getLong("taskId");
 
        try {
            SafeFacilityInspectionTask task = safeFacilityInspectionTaskMapper.selectById(taskId);
            if (task == null || Integer.valueOf(0).equals(task.getIsEnabled())) {
                return;
            }
 
            LocalDateTime executionTime = LocalDateTime.now();
            SafeFacilityInspection inspection = createFacilityInspection(task, executionTime);
            safeFacilityInspectionMapper.insert(inspection);
 
            task.setLastExecutionTime(executionTime);
            task.setNextExecutionTime(calculateNextExecutionTime(
                    task.getFrequencyType(),
                    task.getFrequencyDetail(),
                    executionTime
            ));
            safeFacilityInspectionTaskMapper.updateById(task);
        } catch (Exception e) {
            throw new JobExecutionException(e);
        }
    }
 
    private SafeFacilityInspection createFacilityInspection(SafeFacilityInspectionTask task, LocalDateTime executionTime) {
        SafeFacilityInspection inspection = new SafeFacilityInspection();
        inspection.setScheduleTaskId(task.getId());
        inspection.setInspectionCode("SSXJ-" + executionTime.format(CODE_FORMATTER) + "-" + task.getId());
        inspection.setFacilityId(task.getFacilityId());
        inspection.setInspectionType("定期巡检");
        inspection.setInspectionProject(task.getInspectionProject());
        inspection.setPlanTime(task.getNextExecutionTime() != null ? task.getNextExecutionTime() : executionTime);
        inspection.setInspectorId(task.getInspectorId());
        inspection.setCheckDesc(buildCheckDesc(task));
        inspection.setStatus("待巡检");
        inspection.setCreateUser(task.getCreateUser());
        inspection.setUpdateUser(task.getCreateUser());
        inspection.setCreateTime(executionTime);
        inspection.setUpdateTime(executionTime);
        inspection.setTenantId(task.getTenantId());
        inspection.setDeptId(task.getDeptId());
        return inspection;
    }
 
    private String buildCheckDesc(SafeFacilityInspectionTask task) {
        String desc = "自动生成自定时任务ID: " + task.getId();
        if (StringUtils.isNotBlank(task.getRemark())) {
            desc = desc + ";" + task.getRemark();
        }
        return desc;
    }
 
    private LocalDateTime calculateNextExecutionTime(String frequencyType,
                                                     String frequencyDetail,
                                                     LocalDateTime currentTime) {
        return switch (frequencyType) {
            case "DAILY" -> calculateDailyNextTime(frequencyDetail, currentTime);
            case "WEEKLY" -> calculateWeeklyNextTime(frequencyDetail, currentTime);
            case "MONTHLY" -> calculateMonthlyNextTime(frequencyDetail, currentTime);
            default -> throw new IllegalArgumentException("不支持的频率类型: " + frequencyType);
        };
    }
 
    private LocalDateTime calculateDailyNextTime(String timeStr, LocalDateTime current) {
        LocalTime executionTime = LocalTime.parse(timeStr);
        LocalDateTime nextTime = LocalDateTime.of(current.toLocalDate(), executionTime);
        return current.isBefore(nextTime) ? nextTime : nextTime.plusDays(1);
    }
 
    private LocalDateTime calculateWeeklyNextTime(String detail, LocalDateTime current) {
        String[] parts = detail.split(",");
        LocalTime time = LocalTime.parse(parts[1].trim());
        Set<DayOfWeek> targetDays = parseDayOfWeeks(parts[0]);
 
        LocalDateTime nextTime = current;
        while (true) {
            nextTime = nextTime.plusDays(1);
            if (targetDays.contains(nextTime.getDayOfWeek())) {
                return LocalDateTime.of(nextTime.toLocalDate(), time);
            }
            if (nextTime.isAfter(current.plusYears(1))) {
                throw new RuntimeException("无法找到下次执行时间");
            }
        }
    }
 
    private LocalDateTime calculateMonthlyNextTime(String detail, LocalDateTime current) {
        String[] parts = detail.split(",");
        int dayOfMonth = Integer.parseInt(parts[0].trim());
        LocalTime time = LocalTime.parse(parts[1].trim());
        YearMonth currentMonth = YearMonth.from(current);
        for (int i = 0; i < 24; i++) {
            YearMonth targetMonth = currentMonth.plusMonths(i);
            if (dayOfMonth > targetMonth.lengthOfMonth()) {
                continue;
            }
            LocalDateTime candidate = LocalDateTime.of(
                    targetMonth.getYear(),
                    targetMonth.getMonthValue(),
                    dayOfMonth,
                    time.getHour(),
                    time.getMinute()
            );
            if (current.isBefore(candidate)) {
                return candidate;
            }
        }
        throw new IllegalArgumentException("无法计算下次执行时间");
    }
 
    private Set<DayOfWeek> parseDayOfWeeks(String dayOfWeekStr) {
        Set<DayOfWeek> days = new HashSet<>();
        String[] dayStrs = dayOfWeekStr.split("\\|");
 
        for (String dayStr : dayStrs) {
            switch (dayStr.trim()) {
                case "MON" -> days.add(DayOfWeek.MONDAY);
                case "TUE" -> days.add(DayOfWeek.TUESDAY);
                case "WED" -> days.add(DayOfWeek.WEDNESDAY);
                case "THU" -> days.add(DayOfWeek.THURSDAY);
                case "FRI" -> days.add(DayOfWeek.FRIDAY);
                case "SAT" -> days.add(DayOfWeek.SATURDAY);
                case "SUN" -> days.add(DayOfWeek.SUNDAY);
                default -> throw new IllegalArgumentException("无效的星期几: " + dayStr);
            }
        }
 
        return days;
    }
}