95 lines
3.1 KiB
Python
95 lines
3.1 KiB
Python
from django.db import models
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from django.utils import timezone
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from django.core.exceptions import ValidationError
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from django.contrib.postgres.fields import JSONField
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from django.contrib.contenttypes.fields import GenericForeignKey
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from django.contrib.contenttypes.models import ContentType
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from django.core.serializers.json import DjangoJSONEncoder
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from funkwhale_api.music.models import Track
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from . import filters
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class Radio(models.Model):
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CONFIG_VERSION = 0
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user = models.ForeignKey(
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'users.User',
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related_name='radios',
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null=True,
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blank=True,
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on_delete=models.CASCADE)
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name = models.CharField(max_length=100)
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description = models.TextField(blank=True)
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creation_date = models.DateTimeField(default=timezone.now)
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is_public = models.BooleanField(default=False)
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version = models.PositiveIntegerField(default=0)
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config = JSONField(encoder=DjangoJSONEncoder)
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def get_candidates(self):
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return filters.run(self.config)
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class RadioSession(models.Model):
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user = models.ForeignKey(
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'users.User',
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related_name='radio_sessions',
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null=True,
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blank=True,
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on_delete=models.CASCADE)
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session_key = models.CharField(max_length=100, null=True, blank=True)
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radio_type = models.CharField(max_length=50)
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custom_radio = models.ForeignKey(
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Radio,
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related_name='sessions',
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null=True,
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blank=True,
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on_delete=models.CASCADE)
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creation_date = models.DateTimeField(default=timezone.now)
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related_object_content_type = models.ForeignKey(
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ContentType,
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blank=True,
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null=True,
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on_delete=models.CASCADE)
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related_object_id = models.PositiveIntegerField(blank=True, null=True)
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related_object = GenericForeignKey('related_object_content_type', 'related_object_id')
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def save(self, **kwargs):
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if not self.user and not self.session_key:
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raise ValidationError('Cannot have both session_key and user empty for radio session')
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self.radio.clean(self)
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super().save(**kwargs)
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@property
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def next_position(self):
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next_position = 1
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last_session_track = self.session_tracks.all().order_by('-position').first()
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if last_session_track:
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next_position = last_session_track.position + 1
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return next_position
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def add(self, track):
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new_session_track = RadioSessionTrack.objects.create(track=track, session=self, position=self.next_position)
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return new_session_track
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@property
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def radio(self):
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from .registries import registry
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from . import radios
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return registry[self.radio_type](session=self)
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class RadioSessionTrack(models.Model):
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session = models.ForeignKey(
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RadioSession, related_name='session_tracks', on_delete=models.CASCADE)
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position = models.IntegerField(default=1)
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track = models.ForeignKey(
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Track, related_name='radio_session_tracks', on_delete=models.CASCADE)
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class Meta:
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ordering = ('session', 'position')
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unique_together = ('session', 'position')
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