问题描述
我希望我的程序在新班次开始时重置统计信息。 我的轮班时间预定义为：
- 白班4:00-周一至周四（4:00-15:55周五至周日）
- 周一至周四凌晨16:25-4:00（周五至周日15:55-4:00）
这是我目前正在做的事情，它可以工作，但是我无法弄清楚在班次结束时在AM中如何进行时间比较，因此现在当设置班次结束时它可以工作到23:59:59，但是当我将其更改为凌晨4点时，它掉在了屁股上...
DateTime d1 = new DateTime(2020,01,16,25,00); //Mon-Thur shift change
DateTime d2 = new DateTime(2020,15,55,00); //Fri-Sun shift change
DateTime d3 = new DateTime(2020,23,59,59); //Evening shift end
DateTime d4 = new DateTime(2020,04,00,00); //Morning shift start
DateTime d5 = DateTime.Now;
if (d5.DayOfWeek == DayOfWeek.Monday || d5.DayOfWeek == DayOfWeek.Tuesday || d5.DayOfWeek == DayOfWeek.Wednesday || d5.DayOfWeek == DayOfWeek.Thursday)
{
if (d5.TimeOfDay >= d4.TimeOfDay && d5.TimeOfDay < d1.TimeOfDay)
{
dayShift = true;
eveShift = false;
}
}
if (d5.DayOfWeek == DayOfWeek.Friday || d5.DayOfWeek == DayOfWeek.Saturday || d5.DayOfWeek == DayOfWeek.Sunday)
{
if (d5.TimeOfDay >= d4.TimeOfDay && d5.TimeOfDay < d2.TimeOfDay)
{
dayShift = true;
eveShift = false;
}
}
if (d5.DayOfWeek == DayOfWeek.Monday || d5.DayOfWeek == DayOfWeek.Tuesday || d5.DayOfWeek == DayOfWeek.Wednesday || d5.DayOfWeek == DayOfWeek.Thursday)
{
if (d5.TimeOfDay >= d1.TimeOfDay && d5.TimeOfDay < d3.TimeOfDay)
{
dayShift = false;
eveShift = true;
}
}
if (d5.DayOfWeek == DayOfWeek.Friday || d5.DayOfWeek == DayOfWeek.Saturday || d5.DayOfWeek == DayOfWeek.Sunday)
{
if (d5.TimeOfDay >= d2.TimeOfDay && d5.TimeOfDay < d3.TimeOfDay)
{
dayShift = false;
eveShift = true;
}
}
我该怎么做才能将TimeOfDay与AM小时进行比较？
我想检查时间是否在d1和d4之间。有什么想法吗？
解决方法
我将在这里更改方法。而不是一组时间，我将定义一个对象中构成“移位”定义的内容，并列出这些对象，然后对其进行遍历并针对它们测试当前日期/时间...
最终结果比我乍看之下要复杂得多，因为实际上星期二2:33 AM会实际上到达星期一的夜间班次I猜...
但是我会这样做：
public enum ShiftType
{
Unknown,//default..
Day,Night
}
public class DailyShiftDetail
{
public IEnumerable<DayOfWeek> DaysOfWeek {get;set;}
public DateTime Start { get; set; }
public DateTime End { get; set; }
public ShiftType Type { get; set; }
}
public class ShiftCheck
{
//define shifts on each day. This data could come from a database or something
private static IEnumerable<DailyShiftDetail> shifts = new List<DailyShiftDetail>
{
new DailyShiftDetail
{
//Mon-Thu daytime shift
DaysOfWeek=new[]
{
DayOfWeek.Monday,DayOfWeek.Tuesday,DayOfWeek.Wednesday,DayOfWeek.Thursday
},Start = new DateTime(2000,1,4,0),//4AM
End = new DateTime(2000,16,25,//4:25PM
Type=ShiftType.Day
},new DailyShiftDetail
{
//Fri-Sun daytime shift
DaysOfWeek=new[]
{
DayOfWeek.Friday,DayOfWeek.Saturday,DayOfWeek.Sunday
},04,15,55,//3:55PM
Type=ShiftType.Day
},new DailyShiftDetail
{
//Mon-Thu Evening shift
DaysOfWeek=new[]
{
DayOfWeek.Monday,End = new DateTime(2000,Type=ShiftType.Night
},new DailyShiftDetail
{
//Fri-Sun Evening shift
DaysOfWeek=new[]
{
DayOfWeek.Friday,Type=ShiftType.Night
}
};
public static ShiftType GetShiftTypeForDate(DateTime testDate)
{
//you could probably do this all with a .Where() or
//.FirstOrDefault,but the logic in the LINQ stuff
//would end up being a bit painful. This is probably
//a little less efficient but will perform fine,//and the logic is easier to follow.
DailyShiftDetail matchingShift = null;
foreach(var testShift in shifts)
{
var shiftStart = testShift.Start.TimeOfDay;
var shiftEnd = testShift.End.TimeOfDay;
//check logic differently for evening shifts,//as not only are the times going over midnight,//but in fact 2AM on a tuesday is a *Monday EVENING* shift...
//So we need to check the following days too..
if (shiftStart > shiftEnd)
{
//if the testing time is earlier than the end of shift,then it's between
//midnight and the shift time.
if (testDate.TimeOfDay < shiftEnd)
{
//we need to work out what day this 'shift' would have started on...
//this will not be the DayOfWeek of the passed-in time,but the day before...
//just cast to int,subtract one,account for rollover and cast back to DayOfWeek...
int dayBefore = (int)testDate.DayOfWeek - 1;
if (dayBefore < 0)
{
dayBefore = 6;
}
var dayOfWeekBefore = (DayOfWeek)dayBefore;
//now we've worked out the theoretical day the shift starts,we can test that.
if (testShift.DaysOfWeek.Contains(dayOfWeekBefore))
{
matchingShift = testShift;
}
}
//otherwise,if the test time of day is after the start of the shift then we can check the
//current day and if that matches the shift we can return it too
else if (
testDate.TimeOfDay > shiftStart
&& testShift.DaysOfWeek.Contains(testDate.DayOfWeek))
{
matchingShift = testShift;
}
}
else
{
//daytime shift.
//simple logic. Day matches and test time between start and end.
//Assume end time is EXCLUSIVE as otherwise 4:00AM EXACTLY is in two different shifts..
if (
testShift.DaysOfWeek.Contains(testDate.DayOfWeek)
&& testShift.Start.TimeOfDay <= testDate.TimeOfDay
&& testShift.End.TimeOfDay > testDate.TimeOfDay
)
{
matchingShift = testShift;
}
}
//if we found a match,stop looping through shifts.
if (matchingShift != null)
{
break;
}
}
if (matchingShift == null)
{
//couldn't work it out,so return this...
return ShiftType.Unknown;
}
//found a shift record,return its type.
return matchingShift.Type;
}
}
要使用，您可以测试任何日期/时间并返回“日”或“夜”
//Today,tuesday 22nd @ 5:55pm.. would be an evening shift?
var nightShift = ShiftCheck.GetShiftTypeForDate(
new DateTime(2020,9,22,17,0));
//is ShiftType.Night
//today,tuesday 22nd @ 6AM... would be a day shift?
var dayShift = ShiftCheck.GetShiftTypeForDate(
new DateTime(2020,6,0));
//is ShiftType.Day
//a friday at 15:57 would be a night shift
var friNightShift = ShiftCheck.GetShiftTypeForDate(
new DateTime(2020,18,57,0));
//is ShiftType.Night
//a Wednesday at 15:57 would be a DAY shift though
var wedDayShift = ShiftCheck.GetShiftTypeForDate(
new DateTime(2020,0));
//is ShiftType.Day.
我只是简短地测试过，所以可能在某处有一些逻辑错误，但应该相当容易调试...。