Source code for fyt.timetable.models

from django.utils import timezone
from django.db import models

"""
Our calendar is represented by a singleton Timetable object which
maintains all important trips dates.

The timetable's id is TIMETABLE_ID. We override the model save
method to only use this id, and delete to prevent deletion of
the object.
"""

TIMETABLE_ID = 1


class TimetableManager(models.Manager):

    def timetable(self):
        timetable, created = self.get_or_create(id=TIMETABLE_ID)
        return timetable


class Timetable(models.Model):
    """
    Singleton model for important dates
    """
    applications_open = models.DateTimeField(default=timezone.now)
    applications_close = models.DateTimeField(default=timezone.now)

    hide_volunteer_page = models.BooleanField(
        default=False, help_text=(
            "Enabling this will hide the database Volunteers page from "
            "everyone except directors and trip leader trainers. Use "
            "this during grading to prevent graders from seeing "
            "applicant's scores."
        )
    )
    application_status_available = models.BooleanField(
        default=False, help_text=(
            "Turn this on once all decisions have been made "
            "regarding Leaders and Croos"
        )
    )
    leader_assignment_available = models.BooleanField(
        default=False, help_text=(
            "Turn this on to let Trip Leaders see information "
            "about their assigned trip"
        )
    )
    trippee_registrations_open = models.DateTimeField(default=timezone.now)
    trippee_registrations_close = models.DateTimeField(default=timezone.now)
    trippee_assignment_available = models.BooleanField(
        default=False, help_text=(
            "Turn this on to let Incoming Students see their trip assignments"
        )
    )

    objects = TimetableManager()

    def save(self, *args, **kwargs):
        self.id = TIMETABLE_ID
        super(Timetable, self).save(*args, **kwargs)

    def delete(self, *args, **kwargs):
        pass

    def applications_available(self):
        """
        Are Croo and Leader applications available?
        """
        now = timezone.now()
        return (self.applications_open < now and
                now < self.applications_close)

    def grading_available(self):
        """
        Is it before the application deadling?
        """
        return self.applications_close < timezone.now()

    def registration_available(self):
        """
        Returns True if trippee registration is available
        """
        now = timezone.now()
        return (self.trippee_registrations_open < now and
                now < self.trippee_registrations_close)