WIP checkpoint: Scaffold FastAPI backend project structure

backend/app/dependencies.py

@@ -0,0 +1,50 @@
+"""Shared FastAPI dependencies, including JWT-based auth."""
+
+from typing import Annotated
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import JWTError, jwt
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.config import settings
+from app.database import get_db
+from app.models.user import User
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
+
+
+async def get_current_user(
+    token: Annotated[str, Depends(oauth2_scheme)],
+    db: Annotated[AsyncSession, Depends(get_db)],
+) -> User:
+    """Resolve the JWT bearer token to a User, or raise 401."""
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM]
+        )
+        user_id: str | None = payload.get("sub")
+        if user_id is None:
+            raise credentials_exception
+    except JWTError:
+        raise credentials_exception
+
+    result = await db.execute(select(User).where(User.id == int(user_id)))
+    user = result.scalar_one_or_none()
+    if user is None:
+        raise credentials_exception
+    if not user.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="User account is inactive",
+        )
+    return user
+
+
+CurrentUser = Annotated[User, Depends(get_current_user)]

backend/app/models/asset.py

@@ -1,4 +1,5 @@
-from sqlalchemy import Column, Integer, String, ForeignKey, Text, DateTime, Enum as SAEnum
+from sqlalchemy import Column, Integer, String, ForeignKey, Text, DateTime, Boolean
+from sqlalchemy.dialects.postgresql import ENUM
 from sqlalchemy.orm import relationship
 from sqlalchemy.sql import func
 import enum
@@ -21,14 +22,17 @@ class Asset(Base):
     id = Column(Integer, primary_key=True, index=True)
     name = Column(String(255), nullable=False)
     description = Column(Text, nullable=True)
-    asset_type = Column(SAEnum(AssetType), nullable=False)
+    asset_type = Column(
+        ENUM(AssetType, name="asset_type", create_type=False),
+        nullable=False,
+    )
     file_path = Column(String(512), nullable=False)
     file_size = Column(Integer, nullable=True)
     mime_type = Column(String(128), nullable=True)
     metadata_json = Column(Text, nullable=True)
     world_id = Column(Integer, ForeignKey("worlds.id"), nullable=True)
     owner_id = Column(Integer, ForeignKey("users.id"), nullable=False)
-    is_public = Column(Integer, default=0, nullable=False)
+    is_public = Column(Boolean, default=False, nullable=False)
     created_at = Column(DateTime(timezone=True), server_default=func.now())
     updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
 

backend/app/models/session.py

@@ -1,6 +1,6 @@
 import uuid
 
-from sqlalchemy import Column, String, DateTime, ForeignKey, Boolean
+from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Boolean
 from sqlalchemy.orm import relationship
 from sqlalchemy.sql import func
 from app.database import Base