class Storage(db.Model):
__tablename__ = "storage"
storage_id = db.Column(UUID(as_uuid=True), default=uuid.uuid4, primary_key=True)
session_id = db.Column(UUID(as_uuid=True), db.ForeignKey("session.session_id"))
music_id = db.Column(UUID(as_uuid=True), db.ForeignKey("music.music_id"))
command = db.relationship("Command", backref="storage", lazy="select", uselist=False)
def __str__(self):
return (f"Storage:[{self.storage_id}], Session:[{self.session_id}], "
f"Music:[{self.music_id}]")
class Volume(db.Model):
__tablename__ = "volume"
vol_id = db.Column(UUID(as_uuid=True), default=uuid.uuid4, primary_key=True)
cmd_id = db.Column(UUID(as_uuid=True), db.ForeignKey("command.cmd_id"))
start = db.Column(db.Float)
end = db.Column(db.Float)
volume = db.Column(db.Float)
stem_name = db.Column(db.String(20))
def __str__(self):
return (f"Volume:[{self.vol_id}], start:[{self.start}], end:[{self.end}], "
f"volume:[{self.volume}] for {self.stem_name}")
class Command(db.Model):
__tablename__ = "command"
cmd_id = db.Column(UUID(as_uuid=True), default=uuid.uuid4, primary_key=True)
storage_id = db.Column(UUID(as_uuid=True), db.ForeignKey("storage.storage_id"))
volume = db.relationship("Volume", uselist=True, backref="command")
copy = db.relationship("Copy", uselist=True, backref="command")
all_commands = {"Volume": volume, "Copy": copy}
def __str__(self):
return f"Command:[{self.cmd_id}], Storage:[{self.storage_id}]"
class Undo(db.Model):
__tablename__ = "undo"
undo_id = db.Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
music_id = db.Column(UUID(as_uuid=True), db.ForeignKey("music.music_id"))
total_augmentations = db.Column(db.Integer, nullable=False)
current_augmentations = db.Column(db.Integer, nullable=False)
stem_name = db.Column(db.String(20), nullable=False)
def increment_augmentations(self):
self.total_augmentations += 1
self.current_augmentations = self.total_augmentations
def shift_augmentation(self, delta=1):
self.current_augmentations += delta
self.current_augmentations = int(np.clip(self.current_augmentations, 0,
self.total_augmentations))
def __str__(self):
return (f"Undo: Music[{self.music_id}], Total Aug[{self.total_augmentations}], "
f"Current Aug[{self.current_augmentations}], Stem[{self.stem_name}]")