use declarative_base for all ORM models

This rewrites the entire model base as declarative models.
This allows us to more easily customize overlay fields
in tables and is more common.

This effort also brought some DB violations to light which
this commit addresses.

Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/models/ban.py

@@ -1,10 +1,16 @@
 from fastapi import Request
-from sqlalchemy.orm import mapper
+from sqlalchemy import Column, String
 
-from aurweb.schema import Bans
+from aurweb.models.declarative import Base
 
 
-class Ban:
+class Ban(Base):
+    __tablename__ = "Bans"
+
+    IPAddress = Column(String(45), primary_key=True)
+
+    __mapper_args__ = {"primary_key": [IPAddress]}
+
     def __init__(self, **kwargs):
         self.IPAddress = kwargs.get("IPAddress")
         self.BanTS = kwargs.get("BanTS")
@@ -14,6 +20,3 @@ def is_banned(request: Request):
     from aurweb.db import session
     ip = request.client.host
     return session.query(Ban).filter(Ban.IPAddress == ip).first() is not None
-
-
-mapper(Ban, Bans)