Initial commit that merge both the front end and the API in the same repository

api/funkwhale_api/radios/models.py

@@ -0,0 +1,52 @@
+from django.db import models
+from django.utils import timezone
+from django.core.exceptions import ValidationError
+from django.contrib.contenttypes.fields import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType
+
+from funkwhale_api.music.models import Track
+
+class RadioSession(models.Model):
+    user = models.ForeignKey('users.User', related_name='radio_sessions', null=True, blank=True)
+    session_key = models.CharField(max_length=100, null=True, blank=True)
+    radio_type = models.CharField(max_length=50)
+    creation_date = models.DateTimeField(default=timezone.now)
+    related_object_content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE, blank=True, null=True)
+    related_object_id = models.PositiveIntegerField(blank=True, null=True)
+    related_object = GenericForeignKey('related_object_content_type', 'related_object_id')
+
+    def save(self, **kwargs):
+        if not self.user and not self.session_key:
+            raise ValidationError('Cannot have both session_key and user empty for radio session')
+        self.radio.clean(self)
+        super().save(**kwargs)
+
+    @property
+    def next_position(self):
+        next_position = 1
+
+        last_session_track = self.session_tracks.all().order_by('-position').first()
+        if last_session_track:
+            next_position = last_session_track.position + 1
+
+        return next_position
+
+    def add(self, track):
+        new_session_track = RadioSessionTrack.objects.create(track=track, session=self, position=self.next_position)
+
+        return new_session_track
+
+    @property
+    def radio(self):
+        from .registries import registry
+        from . import radios
+        return registry[self.radio_type](session=self)
+
+class RadioSessionTrack(models.Model):
+    session = models.ForeignKey(RadioSession, related_name='session_tracks')
+    position = models.IntegerField(default=1)
+    track = models.ForeignKey(Track, related_name='radio_session_tracks')
+
+    class Meta:
+        ordering = ('session', 'position')
+        unique_together = ('session', 'position')