landvex: Fixar och tester klara för alla komponenter

- Datafabrik: Dockerfile fix, agentorkestrering fungerar
- Vision: Identify-modell, FAISS, OCR alla testade
- API: Alla 7 integrationstester passerade
- Upplösare: Entitetsupplösning verifierad

landvex-admin-backend/app/security.py

@@ -0,0 +1,81 @@
+"""Säkerhetsfunktioner: lösenordshashning, JWT-hantering, roller."""
+from datetime import datetime, timedelta
+from typing import Optional, Union
+from uuid import UUID
+
+from jose import jwt, JWTError
+from passlib.context import CryptContext
+
+from app.config import get_settings
+from app.models import UserRole
+
+settings = get_settings()
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def create_access_token(subject: Union[str, UUID], expires_delta: Optional[timedelta] = None) -> str:
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    to_encode = {"exp": expire, "sub": str(subject), "type": "access"}
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+    return encoded_jwt
+
+
+def create_refresh_token(subject: Union[str, UUID]) -> str:
+    expire = datetime.utcnow() + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
+    to_encode = {"exp": expire, "sub": str(subject), "type": "refresh"}
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+    return encoded_jwt
+
+
+def decode_token(token: str) -> Optional[dict]:
+    try:
+        payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM])
+        return payload
+    except JWTError:
+        return None
+
+
+# ─── Role-based access helpers ────────────────────────
+
+ROLE_HIERARCHY = {
+    UserRole.VIEWER: 0,
+    UserRole.ANALYST: 1,
+    UserRole.MANAGER: 2,
+    UserRole.ADMIN: 3,
+}
+
+
+def role_level(role: UserRole) -> int:
+    return ROLE_HIERARCHY.get(role, 0)
+
+
+def can_manage(manager_role: UserRole, target_role: UserRole) -> bool:
+    """Returnerar True om manager_role har högre eller lika nivå som target_role."""
+    return role_level(manager_role) >= role_level(target_role)
+
+
+def require_role(min_role: UserRole):
+    """Factory för roll-krav. Används i dependency-kedjan."""
+    from fastapi import HTTPException, status
+
+    def checker(current_user_role: UserRole):
+        if role_level(current_user_role) < role_level(min_role):
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail=f"Requires role {min_role.value} or higher",
+            )
+        return True
+
+    return checker