regirstation works but shared links broken

app/models/map_share.py

@@ -0,0 +1,42 @@
+from sqlalchemy import Column, String, Boolean, DateTime, ForeignKey, Enum as SQLEnum
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.sql import func
+import uuid
+import enum
+from app.database import Base
+
+
+class SharePermission(str, enum.Enum):
+    """Permission levels for map sharing."""
+    READ = "read"  # Read-only access
+    EDIT = "edit"  # Can edit map items
+
+
+class MapShare(Base):
+    """Map sharing with specific users."""
+
+    __tablename__ = "map_shares"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    map_id = Column(UUID(as_uuid=True), ForeignKey("maps.id", ondelete="CASCADE"), nullable=False, index=True)
+    user_id = Column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
+    permission = Column(SQLEnum(SharePermission), nullable=False, default=SharePermission.READ)
+    shared_by = Column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
+
+
+class MapShareLink(Base):
+    """Public/guest share links for maps."""
+
+    __tablename__ = "map_share_links"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    map_id = Column(UUID(as_uuid=True), ForeignKey("maps.id", ondelete="CASCADE"), nullable=False, index=True)
+    token = Column(String(64), unique=True, nullable=False, index=True)  # Random token for the share URL
+    permission = Column(SQLEnum(SharePermission), nullable=False, default=SharePermission.READ)
+    is_active = Column(Boolean, default=True, nullable=False)
+    created_by = Column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True)
+    expires_at = Column(DateTime(timezone=True), nullable=True)  # Optional expiration
+    created_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+    updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)