phase 3.1

backend/app/database/models/comment.py

@@ -0,0 +1,31 @@
+"""Comment model for board comments."""
+import uuid
+from datetime import datetime
+from sqlalchemy import Boolean, Column, DateTime, ForeignKey, String, Text
+from sqlalchemy.dialects.postgresql import JSONB, UUID
+from sqlalchemy.orm import relationship
+
+from app.database.base import Base
+
+
+class Comment(Base):
+    """Comment model for viewer comments on shared boards."""
+
+    __tablename__ = "comments"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    board_id = Column(UUID(as_uuid=True), ForeignKey("boards.id", ondelete="CASCADE"), nullable=False, index=True)
+    share_link_id = Column(UUID(as_uuid=True), ForeignKey("share_links.id", ondelete="SET NULL"), nullable=True, index=True)
+    author_name = Column(String(100), nullable=False)
+    content = Column(Text, nullable=False)
+    position = Column(JSONB, nullable=True)  # Optional canvas position
+    created_at = Column(DateTime, nullable=False, default=datetime.utcnow)
+    is_deleted = Column(Boolean, nullable=False, default=False)
+
+    # Relationships
+    board = relationship("Board", back_populates="comments")
+    share_link = relationship("ShareLink", back_populates="comments")
+
+    def __repr__(self) -> str:
+        return f"<Comment(id={self.id}, author={self.author_name})>"
+