Implement user authentication and permissions

app/models/__init__.py

@@ -4,6 +4,7 @@ __all__ = [
     "connector",
     "id_token",
     "meter_value",
+    "session",
     "transaction",
     "user"
 ]

app/models/session.py

@@ -0,0 +1,14 @@
+import uuid
+from sqlalchemy import Column, DateTime, ForeignKey, String, Uuid
+
+from app.database import Base
+
+class Session(Base):
+    __tablename__ = "sessions"
+
+    id = Column(Uuid, primary_key=True, default=uuid.uuid4)
+    name = Column(String)
+    refresh_token = Column(String, unique=True, index=True)
+    last_used = Column(DateTime(timezone=True))
+
+    user_id = Column(Uuid, ForeignKey("users.id"), index=True)

app/models/user.py

@@ -1,15 +1,19 @@
 import uuid
-from sqlalchemy import Uuid, Boolean, Column, String
+from sqlalchemy import Enum, Uuid, Boolean, Column, String
 from sqlalchemy.orm import relationship
 
 from app.database import Base
+from app.schemas.user import Role
 
 class User(Base):
     __tablename__ = "users"
 
     id = Column(Uuid, primary_key=True, default=uuid.uuid4)
-    friendly_name = Column(String, unique=True, index=True)
-    is_active = Column(Boolean, default=True)
+    friendly_name = Column(String, nullable=True)
+    is_active = Column(Boolean, nullable=False, default=True)
+    email = Column(String, nullable=False, unique=True, index=True)
+    password = Column(String, nullable=False)
+    role = Column(Enum(Role), nullable=False, default=Role.MEMBER)
     
     id_tokens = relationship("IdToken", back_populates="owner", cascade="delete, delete-orphan")
     transactions = relationship("Transaction", cascade="delete, delete-orphan")