refact: remove fallback playlists from model #100

src/aura_engine/scheduling/models.py

@@ -176,13 +176,6 @@ class Timeslot(DB.Model, AuraDatabaseModel):
             is assigned
         show_default (Playlist):        Some playlist played by default, when no default schedule
             playlist is assigned
-        schedule_fallback (Playlist):   Some playlist played as fallback, when no specific playlist
-            is assigned or if it is erroneous (includes silence detection)
-        show_fallback (Playlist):       Some playlist played as fallback, when no schedule fallback
-            playlist is assigned or if some specific playlist is erroneous
-            (includes silence detection)
-        station_fallback (Playlist):    Defined in the original AURA API but not implemented, as
-            station fallbacks are handled locally
 
     """
 
@@ -222,43 +215,10 @@ class Timeslot(DB.Model, AuraDatabaseModel):
         uselist=False,
         back_populates="timeslot",
     )
-    schedule_fallback = relationship(
-        "Playlist",
-        primaryjoin=(
-            "and_(Timeslot.timeslot_start==Playlist.timeslot_start,"
-            " Timeslot.schedule_fallback_id==Playlist.playlist_id,"
-            " Timeslot.show_name==Playlist.show_name)"
-        ),
-        uselist=False,
-        back_populates="timeslot",
-    )
-    show_fallback = relationship(
-        "Playlist",
-        primaryjoin=(
-            "and_(Timeslot.timeslot_start==Playlist.timeslot_start,"
-            " Timeslot.show_fallback_id==Playlist.playlist_id,"
-            " Timeslot.show_name==Playlist.show_name)"
-        ),
-        uselist=False,
-        back_populates="timeslot",
-    )
-    station_fallback = relationship(
-        "Playlist",
-        primaryjoin=(
-            "and_(Timeslot.timeslot_start==Playlist.timeslot_start,"
-            " Timeslot.station_fallback_id==Playlist.playlist_id,"
-            " Timeslot.show_name==Playlist.show_name)"
-        ),
-        uselist=False,
-        back_populates="timeslot",
-    )
 
     playlist_id = Column(Integer)
     default_schedule_playlist_id = Column(Integer)
     default_show_playlist_id = Column(Integer)
-    schedule_fallback_id = Column(Integer)
-    show_fallback_id = Column(Integer)
-    station_fallback_id = Column(Integer)
 
     # Data
     timeslot_start = Column(DateTime, unique=True, index=True)
@@ -337,9 +297,6 @@ class Timeslot(DB.Model, AuraDatabaseModel):
             "playlist_id": self.playlist_id,
             "schedule_default_id": self.schedule_default_id,
             "show_default_id": self.show_default_id,
-            "schedule_fallback_id": self.schedule_fallback_id,
-            "show_fallback_id": self.show_fallback_id,
-            "station_fallback_id": self.station_fallback_id,
             "show": {"name": self.show_name, "host": self.show_hosts},
             "playlist": playlist,
         }