public void GeneratesValidSchedulesToCoverAllWorkingDaysInMonth()
{
var monthlyScheduleGenerator = new NaiveMonthlyScheduleGenerator(People);
var schedules = monthlyScheduleGenerator.Generate();
Assert.Equal(WorkdaysInMonth.Count() * 2, schedules.Count());
}
public IEnumerable <Schedule> Generate()
{
var selectedWorkPatterns = _validWorkPatternsToChooseFrom
.Where(workPattern => workPattern.Count(flag => flag == 1) == 1)
.Select(workPattern => new WorkPatternRepresentation(workPattern))
.ToList();
var monthlyPatterns = CombineWeeklyPatternsIntoMonthlyOnes(selectedWorkPatterns);
var schedulePatternGenerator = new SchedulePatternGenerator(monthlyPatterns, _shifts);
var schedulePatterns = schedulePatternGenerator.GenerateAll();
var schedules = new List <Schedule>();
for (var personIndex = 0; personIndex < _people.Count(); personIndex += 1)
{
for (var workdayIndex = 0; workdayIndex < WorkdaysInMonth.Count(); workdayIndex += 1)
{
var currentDaySchedule = schedulePatterns.ElementAt(personIndex).ElementAt(workdayIndex);
if (currentDaySchedule.StartsWith("1"))
{
var workday = WorkdaysInMonth.ElementAt(workdayIndex);
var shift = (WorkShift)Enum.Parse(typeof(WorkShift), currentDaySchedule.Split(",").Skip(1).First());
var schedule = new Schedule
{
Employee = _people.ElementAt(personIndex),
StartTime = new DateTime(workday.Year, workday.Month, workday.Day),
EndTime = new DateTime(workday.Year, workday.Month, workday.Day)
};
if (WorkShift.Morning == shift)
{
schedule.StartTime = schedule.StartTime.AddHours(9);
}
else
{
schedule.StartTime = schedule.StartTime.AddHours(13);
}
schedule.EndTime = schedule.StartTime.AddHours(4);
schedules.Add(schedule);
}
}
}
// NOT GOOD: I'm not making sure the resulting schedules don't include duplicates
// (e.g. more than 2 schedules on one and the same day)
return(schedules);
}
private IEnumerable <WorkPatternRepresentation> CombineWeeklyPatternsIntoMonthlyOnes(
List <WorkPatternRepresentation> weeklyPatterns)
{
DaysInMonth.ToString();
WorkdaysInMonth.ToString();
var patternValidator = new WorkPatternValidator(new List <BusinessRule>());
var monthlyPatterns = new List <WorkPatternRepresentation>();
var random = new Random();
foreach (var weeklyPattern in weeklyPatterns)
{
var monthlyPattern = weeklyPattern;
// just consider 5 weekly patterns will cover the month
// (normally, we should find the first multiple of 5 larger than WorkDaysInMonth)
// TODO the Times() extension method would be useful here
for (var count = 0; count < 5; count += 1)
{
var randomIndex = random.Next(0, weeklyPatterns.Count);
var randomNextPattern = weeklyPatterns.ElementAt(randomIndex);
var candidateForExtendedPattern = new WorkPatternRepresentation(
monthlyPattern.Concat(randomNextPattern));
while (!patternValidator.Validate(candidateForExtendedPattern))
{
randomIndex = random.Next(0, weeklyPatterns.Count);
randomNextPattern = weeklyPatterns.ElementAt(randomIndex);
candidateForExtendedPattern = new WorkPatternRepresentation(
monthlyPattern.Concat(randomNextPattern));
}
// TODO as a safety measure, the above loop should be forcefully
// exited if it has been looping for a large number of times
monthlyPattern = candidateForExtendedPattern;
}
monthlyPatterns.Add(monthlyPattern);
}
return(monthlyPatterns);
}
