import java.util.Calendar;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
public class Main {
    public static void main(String[] args) {
        // 創(chuàng)建一個(gè)ScheduledExecutorService對象
        ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
        // 獲取當(dāng)前時(shí)間
        Calendar now = Calendar.getInstance();
        // 計(jì)算下一個(gè)周二晚上6點(diǎn)的時(shí)間
        Calendar nextExecutionTime = getNextExecutionTime(now);
        // 計(jì)算當(dāng)前時(shí)間到下一個(gè)執(zhí)行時(shí)間的時(shí)間間隔
        long initialDelay = nextExecutionTime.getTimeInMillis() - now.getTimeInMillis();
        // 創(chuàng)建定時(shí)任務(wù)
        ScheduledFuture<?> future = executor.scheduleAtFixedRate(new Runnable() {
            @Override
            public void run() {
                // 自動生成devops流水線的代碼
                System.out.println("Generating devops pipeline...");
            }
        }, initialDelay, 7 * 24 * 60 * 60 * 1000, TimeUnit.MILLISECONDS);
        // 在需要時(shí)取消定時(shí)任務(wù)
        // future.cancel(true);
        // 關(guān)閉ScheduledExecutorService
        // executor.shutdown();
    }
    private static Calendar getNextExecutionTime(Calendar now) {
        Calendar nextExecutionTime = (Calendar) now.clone();
        nextExecutionTime.set(Calendar.DAY_OF_WEEK, Calendar.TUESDAY);
        nextExecutionTime.set(Calendar.HOUR_OF_DAY, 18);
        nextExecutionTime.set(Calendar.MINUTE, 0);
        nextExecutionTime.set(Calendar.SECOND, 0);
        nextExecutionTime.set(Calendar.MILLISECOND, 0);
        if (nextExecutionTime.before(now)) {
            nextExecutionTime.add(Calendar.WEEK_OF_YEAR, 1);
        }
        return nextExecutionTime;
    }
}