package com.ruoyi.inspectiontask.service.impl;

import com.ruoyi.inspectiontask.mapper.InspectionTaskMapper;
import com.ruoyi.inspectiontask.mapper.TimingTaskMapper;
import com.ruoyi.inspectiontask.pojo.InspectionTask;
import com.ruoyi.inspectiontask.pojo.TimingTask;
import com.ruoyi.inspectiontask.service.TimingTaskService;
import org.quartz.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import javax.sql.DataSource;
import java.time.DayOfWeek;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.YearMonth;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

@Component
@DisallowConcurrentExecution // 禁止并发执行同一个Job
public class TimingTaskJob implements Job {

    @Autowired
    private TimingTaskMapper timingTaskMapper;

    @Autowired
    private TimingTaskService timingTaskService;

    @Autowired
    private InspectionTaskMapper inspectionTaskMapper;

    @Autowired
    private JdbcTemplate jdbcTemplate;

    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        JobDataMap jobDataMap = context.getJobDetail().getJobDataMap();
        // 修复类型转换错误，正确获取taskId
        Long taskId = jobDataMap.getLong("taskId");

        try {
            // 3. 尝试查询你的业务数据
            // 通过JDBC模板查询定时任务信息，使用参数化查询防止SQL注入
            String yourSql = "SELECT * FROM timing_task where id = ?";
            List<TimingTask> tasks = jdbcTemplate.query(
                    yourSql,
                    new BeanPropertyRowMapper<>(TimingTask.class),
                    taskId
            );
            TimingTask timingTask = tasks.isEmpty() ? null : tasks.get(0);
            if (timingTask == null) {
                throw new JobExecutionException("找不到定时任务: " + taskId);
            }
            
//            if (!timingTask.isActive()) {
//                throw new JobExecutionException("定时任务已禁用: " + taskId);
//            }

            // 2. 创建并保存巡检任务记录 - 这就是您提供的代码应该放的位置
            InspectionTask inspectionTask = createInspectionTask(timingTask);
            inspectionTaskMapper.insert(inspectionTask);

            // 3. 更新定时任务的执行时间
            if (!tasks.isEmpty()) {
                TimingTask task = tasks.get(0);

                // 更新最后执行时间为当前时间
                LocalDateTime lastExecutionTime = LocalDateTime.now();

                // 计算下次执行时间
                LocalDateTime nextExecutionTime = calculateNextExecutionTime(
                        task.getFrequencyType(),
                        task.getFrequencyDetail(),
                        lastExecutionTime
                );

                // 执行更新操作
                String updateSql = "UPDATE timing_task " +
                        "SET last_execution_time = ?, next_execution_time = ? " +
                        "WHERE id = ?";

                jdbcTemplate.update(
                        updateSql,
                        lastExecutionTime,
                        nextExecutionTime,
                        taskId
                );
            }
//            timingTaskService.updateTaskExecutionTime(taskId);

            // 4. 记录执行日志
//            timingTaskService.recordExecutionLog(taskId, true, "任务执行成功，生成巡检任务ID: " + inspectionTask.getId());

        } catch (Exception e) {
//            timingTaskService.recordExecutionLog(taskId, false, "任务执行失败: " + e.getMessage());
            throw new JobExecutionException(e);
        }
    }

    // 这就是您提供的代码封装成的方法
    private InspectionTask createInspectionTask(TimingTask timingTask) {
        InspectionTask inspectionTask = new InspectionTask();

        // 复制基本属性
        inspectionTask.setTaskName(timingTask.getTaskName());
        inspectionTask.setTaskId(timingTask.getTaskId());
        inspectionTask.setInspectorId(timingTask.getInspectorIds());
        inspectionTask.setInspectionLocation(timingTask.getInspectionLocation());
        inspectionTask.setRemarks("自动生成自定时任务ID: " + timingTask.getId());
        inspectionTask.setRegistrantId(timingTask.getRegistrantId());
        inspectionTask.setFrequencyType(timingTask.getFrequencyType());
        inspectionTask.setFrequencyDetail(timingTask.getFrequencyDetail());
        inspectionTask.setTenantId(timingTask.getTenantId());

        return inspectionTask;
    }


    /**
     * 计算下次执行时间
     */
    private LocalDateTime calculateNextExecutionTime(String frequencyType,
                                                     String frequencyDetail,
                                                     LocalDateTime currentTime) {
        try {
            switch (frequencyType) {
                case "DAILY":
                    return calculateDailyNextTime(frequencyDetail, currentTime);
                case "WEEKLY":
                    return calculateWeeklyNextTime(frequencyDetail, currentTime);
                case "MONTHLY":
                    return calculateMonthlyNextTime(frequencyDetail, currentTime);
                case "QUARTERLY":
                    return calculateQuarterlyNextTime(frequencyDetail, currentTime);
                default:
                    throw new IllegalArgumentException("不支持的频率类型: " + frequencyType);
            }
        } catch (Exception e) {
            throw new RuntimeException("计算下次执行时间失败: " + e.getMessage(), e);
        }
    }

    /**
     * 计算每日任务的下次执行时间
     */
    private LocalDateTime calculateDailyNextTime(String timeStr, LocalDateTime current) {
        LocalTime executionTime = LocalTime.parse(timeStr); // 解析格式 "HH:mm"
        LocalDateTime nextTime = LocalDateTime.of(current.toLocalDate(), executionTime);

        // 如果今天的时间已过，则安排明天
        return current.isBefore(nextTime) ? nextTime : nextTime.plusDays(1);
    }

    /**
     * 计算每周任务的下次执行时间
     */
    private LocalDateTime calculateWeeklyNextTime(String detail, LocalDateTime current) {
        String[] parts = detail.split(",");
        String dayOfWeekStr = parts[0];  // 如 "MON" 或 "MON|WED|FRI"
        LocalTime time = LocalTime.parse(parts[1]); // 时间部分

        // 解析星期几(支持多个星期)
        Set<DayOfWeek> targetDays = parseDayOfWeeks(dayOfWeekStr);

        // 从当前时间开始找下一个符合条件的星期几
        LocalDateTime nextTime = current;
        while (true) {
            nextTime = nextTime.plusDays(1);
            if (targetDays.contains(nextTime.getDayOfWeek())) {
                return LocalDateTime.of(nextTime.toLocalDate(), time);
            }

            // 防止无限循环(理论上不会发生)
            if (nextTime.isAfter(current.plusYears(1))) {
                throw new RuntimeException("无法找到下次执行时间");
            }
        }
    }

    /**
     * 计算每月任务的下次执行时间
     */
    private LocalDateTime calculateMonthlyNextTime(String detail, LocalDateTime current) {
        String[] parts = detail.split(",");
        int dayOfMonth = Integer.parseInt(parts[0]);
        LocalTime time = LocalTime.parse(parts[1]);

        // 从下个月开始计算
        LocalDateTime nextTime = current.plusMonths(1)
                .withDayOfMonth(Math.min(dayOfMonth, current.plusMonths(1).toLocalDate().lengthOfMonth()))
                .with(time);

        return nextTime;
    }

    /**
     * 计算每季度任务的下次执行时间
     */
    private LocalDateTime calculateQuarterlyNextTime(String detail, LocalDateTime current) {
        String[] parts = detail.split(",");
        int quarterMonth = Integer.parseInt(parts[0]); // 1=第1个月，2=第2个月，3=第3个月
        int dayOfMonth = Integer.parseInt(parts[1]);
        LocalTime time = LocalTime.parse(parts[2]);

        // 计算当前季度
        int currentQuarter = (current.getMonthValue() - 1) / 3 + 1;
        int currentMonthInQuarter = (current.getMonthValue() - 1) % 3 + 1;

        YearMonth targetYearMonth;
        if (currentMonthInQuarter < quarterMonth) {
            // 本季度内还有执行机会
            targetYearMonth = YearMonth.from(current)
                    .plusMonths(quarterMonth - currentMonthInQuarter);
        } else {
            // 需要到下个季度
            targetYearMonth = YearMonth.from(current)
                    .plusMonths(3 - currentMonthInQuarter + quarterMonth);
        }

        // 处理月末日期
        int adjustedDay = Math.min(dayOfMonth, targetYearMonth.lengthOfMonth());

        return LocalDateTime.of(
                targetYearMonth.getYear(),
                targetYearMonth.getMonthValue(),
                adjustedDay,
                time.getHour(),
                time.getMinute()
        );
    }

    /**
     * 解析星期几字符串
     */
    private Set<DayOfWeek> parseDayOfWeeks(String dayOfWeekStr) {
        Set<DayOfWeek> days = new HashSet<>();
        String[] dayStrs = dayOfWeekStr.split("\\|");

        for (String dayStr : dayStrs) {
            switch (dayStr) {
                case "MON": days.add(DayOfWeek.MONDAY); break;
                case "TUE": days.add(DayOfWeek.TUESDAY); break;
                case "WED": days.add(DayOfWeek.WEDNESDAY); break;
                case "THU": days.add(DayOfWeek.THURSDAY); break;
                case "FRI": days.add(DayOfWeek.FRIDAY); break;
                case "SAT": days.add(DayOfWeek.SATURDAY); break;
                case "SUN": days.add(DayOfWeek.SUNDAY); break;
                default: throw new IllegalArgumentException("无效的星期几: " + dayStr);
            }
        }

        return days;
    }
}