from datetime import datetime, timedelta
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from jwt import encode, decode, exceptions
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from passlib.context import CryptContext
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from fastapi import HTTPException, status
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from app.config.config import settings
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from app.models.user_model import UserModel
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SECRET_KEY = settings.secret_key
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 3000
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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def verify_password(plain_password, hashed_password):
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return pwd_context.verify(plain_password, hashed_password)
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def get_password_hash(password):
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return pwd_context.hash(password)
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def authenticate_user(db, username: str, password: str):
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user = db.query(UserModel).filter(UserModel.username == username).first()
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if not user:
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return False
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if not verify_password(password, user.hashed_password):
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return False
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return user
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def create_access_token(data: dict, expires_delta: timedelta = None):
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
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to_encode.update({"exp": expire})
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encoded_jwt = encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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return encoded_jwt
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def decode_access_token(token: str):
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try:
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payload = decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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return payload
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except exceptions.DecodeError:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Could not validate credentials")
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