init

backend/app/models/track.py

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+import uuid
+from datetime import datetime
+from sqlalchemy import String, DateTime, Integer, ForeignKey
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from ..database import Base
+
+
+class Track(Base):
+    __tablename__ = "tracks"
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    title: Mapped[str] = mapped_column(String(255), nullable=False)
+    artist: Mapped[str] = mapped_column(String(255), nullable=False)
+    duration: Mapped[int] = mapped_column(Integer, nullable=False)  # milliseconds
+    s3_key: Mapped[str] = mapped_column(String(500), nullable=False)
+    file_size: Mapped[int] = mapped_column(Integer, nullable=False)  # bytes
+    uploaded_by: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+
+    # Relationships
+    uploader = relationship("User", back_populates="uploaded_tracks")
+    queue_entries = relationship("RoomQueue", back_populates="track", cascade="all, delete-orphan")
+
+
+class RoomQueue(Base):
+    __tablename__ = "room_queue"
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    room_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("rooms.id"), nullable=False)
+    track_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("tracks.id"), nullable=False)
+    position: Mapped[int] = mapped_column(Integer, nullable=False)
+    added_by: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
+
+    # Relationships
+    room = relationship("Room", back_populates="queue")
+    track = relationship("Track", back_populates="queue_entries")
+    added_by_user = relationship("User")