feat: backend FastAPI funcional con auth, ETA y simulador

backend/auth.py

@@ -0,0 +1,40 @@
+from datetime import datetime, timedelta
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from sqlalchemy.orm import Session
+from database import get_db
+import models
+
+SECRET_KEY = "hackonlinces2026supersecretkey"
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 60
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="auth/login")
+
+def hash_password(password: str):
+    return pwd_context.hash(password)
+
+def verify_password(plain: str, hashed: str):
+    return pwd_context.verify(plain, hashed)
+
+def create_token(data: dict):
+    to_encode = data.copy()
+    expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    to_encode.update({"exp": expire})
+    return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+
+def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)):
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        email = payload.get("sub")
+        if email is None:
+            raise HTTPException(status_code=401, detail="Token inválido")
+    except JWTError:
+        raise HTTPException(status_code=401, detail="Token inválido")
+    user = db.query(models.Usuario).filter(models.Usuario.email == email).first()
+    if not user:
+        raise HTTPException(status_code=401, detail="Usuario no encontrado")
+    return user