Added auth

backend/app/models.py

@@ -1,7 +1,17 @@
-from sqlalchemy import Column, Integer, String, Float, DateTime, ForeignKey
+from sqlalchemy import Column, Integer, String, Float, DateTime, ForeignKey, Boolean
 from sqlalchemy.sql import func
 from .database import Base
 
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String, unique=True, index=True, nullable=False)
+    hashed_password = Column(String, nullable=False)
+    is_admin = Column(Boolean, default=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+
 class Drug(Base):
     __tablename__ = "drugs"
 
@@ -31,7 +41,7 @@ class Dispensing(Base):
     id = Column(Integer, primary_key=True, index=True)
     drug_variant_id = Column(Integer, ForeignKey("drug_variants.id"), nullable=False)
     quantity = Column(Float, nullable=False)
-    animal_name = Column(String, nullable=False)  # Name/ID of the animal
+    animal_name = Column(String, nullable=True)  # Name/ID of the animal (optional)
     user_name = Column(String, nullable=False)  # User who dispensed
     dispensed_at = Column(DateTime(timezone=True), server_default=func.now(), index=True)
     notes = Column(String, nullable=True)