add postgres

backend/models.py

@@ -0,0 +1,29 @@
+from __future__ import annotations
+
+import uuid
+from datetime import datetime, timezone
+
+from sqlalchemy import Boolean, DateTime, String
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+def _now():
+    return datetime.now(timezone.utc)
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    email: Mapped[str] = mapped_column(String(320), unique=True, index=True, nullable=False)
+    full_name: Mapped[str | None] = mapped_column(String(200), nullable=True)
+    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    is_admin: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_now, nullable=False)
+