134 lines
4.3 KiB
Python
134 lines
4.3 KiB
Python
from django.db import models
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from django.utils.timezone import now
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class Schedule(models.Model):
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starts_at = models.DateTimeField(db_column="starts")
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ends_at = models.DateTimeField(db_column="ends")
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instance = models.ForeignKey(
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"schedule.ShowInstance",
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on_delete=models.DO_NOTHING,
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)
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file = models.ForeignKey(
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"storage.File",
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on_delete=models.DO_NOTHING,
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blank=True,
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null=True,
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)
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stream = models.ForeignKey(
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"schedule.Webstream",
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on_delete=models.DO_NOTHING,
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blank=True,
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null=True,
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)
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length = models.DurationField(blank=True, null=True, db_column="clip_length")
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fade_in = models.TimeField(blank=True, null=True)
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fade_out = models.TimeField(blank=True, null=True)
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cue_in = models.DurationField()
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cue_out = models.DurationField()
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class PositionStatus(models.IntegerChoices):
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FILLER = -1, "Filler" # Used to fill a show that already started
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OUTSIDE = 0, "Outside" # Is outside the show time frame
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INSIDE = 1, "Inside" # Is inside the show time frame
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BOUNDARY = 2, "Boundary" # Is at the boundary of the show time frame
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position = models.IntegerField()
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position_status = models.SmallIntegerField(
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choices=PositionStatus.choices,
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default=PositionStatus.INSIDE,
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db_column="playout_status",
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)
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# Broadcasted is set to 1 when a live source is not
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# on. Used for the playout history.
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broadcasted = models.SmallIntegerField()
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played = models.BooleanField(
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blank=True,
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null=True,
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db_column="media_item_played",
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)
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@property
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def overbooked(self) -> bool:
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"""
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A schedule item is overbooked if it starts after the end of the show
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instance it is in.
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Related to self.position_status
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"""
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return self.starts_at >= self.instance.ends_at
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def get_owner(self):
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return self.instance.get_owner()
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def get_cue_out(self):
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"""
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Returns a scheduled item cue out that is based on the current show
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instance.
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Cue out of a specific item can potentially overrun the show that it is
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scheduled in. In that case, the cue out should be the end of the show.
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This prevents the next show having overlapping items playing.
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Cases:
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- When the schedule ends before the end of the show instance,
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return the stored cue out.
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- When the schedule starts before the end of the show instance
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and ends after the show instance ends,
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return timedelta between schedule starts and show instance ends.
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- When the schedule starts after the end of the show instance,
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return the stored cue_out even if the schedule WILL NOT BE PLAYED.
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"""
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if (
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self.starts_at < self.instance.ends_at
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and self.instance.ends_at < self.ends_at
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):
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return self.instance.ends_at - self.starts_at
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return self.cue_out
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def get_ends_at(self):
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"""
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Returns a scheduled item ends that is based on the current show
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instance.
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End of a specific item can potentially overrun the show that it is
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scheduled in. In that case, the end should be the end of the show.
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This prevents the next show having overlapping items playing.
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Cases:
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- When the schedule ends before the end of the show instance,
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return the scheduled item ends.
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- When the schedule starts before the end of the show instance
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and ends after the show instance ends,
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return the show instance ends.
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- When the schedule starts after the end of the show instance,
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return the show instance ends.
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"""
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if self.instance.ends_at < self.ends_at:
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return self.instance.ends_at
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return self.ends_at
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@staticmethod
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def is_file_scheduled_in_the_future(file_id):
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count = Schedule.objects.filter(
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file_id=file_id,
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ends_at__gt=now(),
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).count()
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return count > 0
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class Meta:
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managed = False
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db_table = "cc_schedule"
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permissions = [
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("change_own_schedule", "Change the content on their shows"),
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("delete_own_schedule", "Delete the content on their shows"),
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]
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