Zero Hour Contract Scheduling

https://www.aidengourley.com/static/mainPage/other/CasualContractSchedulingDevelopmentProcessDocumentation.pdf

A very common time-consuming exercise for management, particularly within corporations that operate shift-based working hours, is the scheduling that takes place, usually by hand. The purpose of this web application is to reduce the time management spend on this task, while ensuring reference and changes can be accommodated for each stakeholder. The manager will build the timetable they require and publish the shifts they require to be filled. Each employee will have an individual account with which they are able to choose shifts they would like to be selected for. The manager has an option to choose when to run the scheduler and commit the changes to the following month's schedule.

(This project was based on a real case study; however the organisation has not implemented the software. All rights to the contents of this repository remain with Aiden Gourley. No content can be copied, changed, or redistributed.)

					||!!|| The Scheduling Algorithm ||!!||

The objective of the algorithm is to ensure a full schedule, and where there are conflicts between two employees regarding shifts, provide a fair solution based on the number of shifts assigned to each employee that month. The pseudocode is as follows:

[ASSUME pop(), append(), get(), (Database items are accessed as objects)]

PROCEDURE GetSchedule()
	EmployeeAvailability ← CALL GetEmployeeAvailability
	CALL AssignShifts(EmployeeAvailability) 
END PROCEDURE 

FUNCTION GetEmployeeAvailability()
	EmployeeAvailability ← [ ]
	FOR Employee IN Employees DO
		EmployeeUsername ← Employee.user.username
		Availability ← [ ]
		NumberOfShifts ← 0
		FOR Shift IN Employee.Availability.all() DO
				Availability.Append(Shift.pk)
				NumberOfShifts ← NumberOfShifts + 1
		END FOR
		AvailabiityList ← [EmployeeUsername, Availability, NumberOfShifts]
		EmployeeAvailability.append(AvailabilityList)
	END FOR
	EmployeeAvailability ← ResverseSort(EmployeeAvailability[2])
	RETURN EmployeeAvailability
END FUNCTION

PROCEDURE AssignShifts(EmployeeAvailability)
	WHILE EmployeeAvailability NOT Null DO
		Employee ← EmployeeAvailability.pop(0)
		NumberOfShifts ← Employee[2]
		IF NumberOfShifts > 0 THEN
			Shift ← Shifts.get(pk=Employee[1][0])
			EmployeeObject ← Employees.objects.get(username=Employee[0])
			IF Shift.Employees = None THEN
				Shift(Employees=EmployeeObject)
			END IF
			IF NumOfShifts > 1 THEN
				NumberOfShifts = NumberOfShifts - 1
				Employee[2] ← NumberOfShifts
				Employee[1][0].delete()
				EmployeeAvailability.append(Employee)
			END IF
		END IF
	END WHILE
END PROCEDURE