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backend/models/shot.py

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+from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Enum, UniqueConstraint
+from sqlalchemy.orm import relationship, Query
+from sqlalchemy.sql import func
+from database import Base
+import enum
+
+
+class ShotStatus(str, enum.Enum):
+    NOT_STARTED = "not_started"
+    IN_PROGRESS = "in_progress"
+    ON_HOLD = "on_hold"
+    COMPLETED = "completed"
+    APPROVED = "approved"
+
+
+class Shot(Base):
+    __tablename__ = "shots"
+
+    id = Column(Integer, primary_key=True, index=True)
+    project_id = Column(Integer, ForeignKey("projects.id"), nullable=False, index=True)
+    episode_id = Column(Integer, ForeignKey("episodes.id"), nullable=False)
+    name = Column(String, nullable=False, index=True)
+    description = Column(String)
+    frame_start = Column(Integer, nullable=False, default=1001)
+    frame_end = Column(Integer, nullable=False, default=1001)
+    status = Column(Enum(ShotStatus), nullable=False, default=ShotStatus.NOT_STARTED)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
+    
+    # Soft deletion columns
+    deleted_at = Column(DateTime(timezone=True), nullable=True)
+    deleted_by = Column(Integer, ForeignKey("users.id"), nullable=True)
+
+    # Relationships
+    project = relationship("Project", back_populates="shots")
+    episode = relationship("Episode", back_populates="shots")
+    tasks = relationship("Task", back_populates="shot", cascade="all, delete-orphan")
+    deleted_by_user = relationship("User", foreign_keys=[deleted_by])
+
+    # Constraints
+    __table_args__ = (
+        UniqueConstraint('project_id', 'name', name='uq_shot_project_name'),
+    )
+
+    @property
+    def is_deleted(self) -> bool:
+        """Check if the shot is soft deleted."""
+        return self.deleted_at is not None
+
+    @classmethod
+    def query_active(cls, query: Query) -> Query:
+        """Filter query to exclude soft deleted shots."""
+        return query.filter(cls.deleted_at.is_(None))
+
+    @classmethod
+    def query_deleted(cls, query: Query) -> Query:
+        """Filter query to include only soft deleted shots."""
+        return query.filter(cls.deleted_at.isnot(None))
+
+    @classmethod
+    def query_all_including_deleted(cls, query: Query) -> Query:
+        """Return query without soft deletion filtering (for admin use)."""
+        return query
+
+    def __repr__(self):
+        return f"<Shot(id={self.id}, name='{self.name}', frames={self.frame_start}-{self.frame_end})>"