feat: phase 1C JWT UI, events/hosts API, Vue frontend

backend/app/auth/jwt_auth.py

@@ -0,0 +1,39 @@
+from datetime import datetime, timedelta, timezone
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
+from jose import JWTError, jwt
+
+from app.config import get_settings
+
+bearer_scheme = HTTPBearer(auto_error=False)
+
+
+def create_access_token(subject: str) -> str:
+    settings = get_settings()
+    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.jwt_expire_minutes)
+    payload = {"sub": subject, "exp": expire}
+    return jwt.encode(payload, settings.jwt_secret, algorithm=settings.jwt_algorithm)
+
+
+def get_current_user(
+    credentials: HTTPAuthorizationCredentials | None = Depends(bearer_scheme),
+) -> str:
+    if credentials is None or credentials.scheme.lower() != "bearer":
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Not authenticated",
+        )
+    settings = get_settings()
+    try:
+        payload = jwt.decode(
+            credentials.credentials,
+            settings.jwt_secret,
+            algorithms=[settings.jwt_algorithm],
+        )
+        username = payload.get("sub")
+        if not username:
+            raise HTTPException(status_code=401, detail="Invalid token")
+        return str(username)
+    except JWTError as exc:
+        raise HTTPException(status_code=401, detail="Invalid token") from exc