Initial commit: API Anime Tracker avec authentification et synchronisation

auth.py

@@ -0,0 +1,94 @@
+"""
+Fonctions d'authentification et de sécurité
+"""
+from datetime import datetime, timedelta
+from typing import Optional
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from sqlalchemy.orm import Session
+import os
+from dotenv import load_dotenv
+
+from database import get_db
+from models import User
+
+load_dotenv()
+
+# Configuration JWT
+SECRET_KEY = os.getenv("SECRET_KEY", "your-secret-key-change-in-production-min-32-chars")
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30 * 24 * 60  # 30 jours
+
+# Configuration du hachage de mot de passe
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+security = HTTPBearer()
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """Vérifier un mot de passe"""
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    """Hacher un mot de passe"""
+    return pwd_context.hash(password)
+
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
+    """Créer un token JWT"""
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+
+def verify_token(token: str) -> Optional[dict]:
+    """Vérifier et décoder un token JWT"""
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        return payload
+    except JWTError:
+        return None
+
+
+def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+    db: Session = Depends(get_db)
+) -> User:
+    """Obtenir l'utilisateur actuel à partir du token JWT"""
+    token = credentials.credentials
+    payload = verify_token(token)
+    
+    if payload is None:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Token invalide ou expiré",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    user_id: str = payload.get("sub")
+    if user_id is None:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Token invalide",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    user = db.query(User).filter(User.id == int(user_id)).first()
+    if user is None:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Utilisateur non trouvé",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    return user
+