CLIO v1.0 — Scanner Inteligente com IA (MVP)

backend/app/utils/security.py

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+from passlib.context import CryptContext
+from jose import jwt, JWTError
+from datetime import datetime, timedelta, timezone
+from fastapi import Depends, HTTPException
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select
+from app.config import settings
+from app.database import get_db
+from app.models.user import User
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+security = HTTPBearer()
+
+def hash_password(password: str) -> str:
+    return pwd_context.hash(password)
+
+def verify_password(plain: str, hashed: str) -> bool:
+    return pwd_context.verify(plain, hashed)
+
+def create_access_token(data: dict) -> str:
+    to_encode = data.copy()
+    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    to_encode.update({"exp": expire})
+    return jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+
+async def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+    db: AsyncSession = Depends(get_db)
+) -> User:
+    try:
+        payload = jwt.decode(credentials.credentials, settings.SECRET_KEY, algorithms=[settings.ALGORITHM])
+        user_id = payload.get("sub")
+        if user_id is None:
+            raise HTTPException(status_code=401, detail="Token inválido")
+    except JWTError:
+        raise HTTPException(status_code=401, detail="Token inválido")
+    result = await db.execute(select(User).where(User.id == int(user_id)))
+    user = result.scalar_one_or_none()
+    if user is None:
+        raise HTTPException(status_code=401, detail="Usuário não encontrado")
+    return user