feat(database): encrypt transactions data

7project/backend/app/models/transaction.py

@@ -1,15 +1,21 @@
+import os
 from fastapi_users_db_sqlalchemy import GUID
 from sqlalchemy import Column, Integer, String, Float, ForeignKey, Date, func
 from sqlalchemy.orm import relationship
+from sqlalchemy_utils import EncryptedType
+from sqlalchemy_utils.types.encrypted.encrypted_type import FernetEngine
+
 from app.core.base import Base
 from app.models.categories import association_table
 
+SECRET_KEY = os.environ.get("DB_ENCRYPTION_KEY", "localdev")
+
 
 class Transaction(Base):
     __tablename__ = "transaction"
     id = Column(Integer, primary_key=True, autoincrement=True)
-    amount = Column(Float, nullable=False)
-    description = Column(String(length=255), nullable=True)
+    amount = Column(EncryptedType(Float, SECRET_KEY, engine=FernetEngine), nullable=False)
+    description = Column(EncryptedType(String(length=255), SECRET_KEY, engine=FernetEngine), nullable=True)
     date = Column(Date, nullable=False, server_default=func.current_date())
     user_id = Column(GUID, ForeignKey("user.id"), nullable=False)