Added users model for authentication with roles and user roles

private_gpt/users/core/security.py

@@ -0,0 +1,44 @@
+from passlib.context import CryptContext
+import os
+from datetime import datetime, timedelta
+from typing import Union, Any
+from jose import jwt
+
+ACCESS_TOKEN_EXPIRE_MINUTES = 30  # 30 minutes
+REFRESH_TOKEN_EXPIRE_MINUTES = 60 * 24 * 7 # 7 days
+ALGORITHM = "HS256"
+# JWT_SECRET_KEY = os.environ['JWT_SECRET_KEY']     # should be kept secret
+# JWT_REFRESH_SECRET_KEY = os.environ['JWT_REFRESH_SECRET_KEY']      # should be kept secret
+JWT_SECRET_KEY = "QUICKGPT"
+JWT_REFRESH_SECRET_KEY = "QUICKGPT_REFRESH"
+
+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, Any], expires_delta: int = None) -> str:
+    if expires_delta is not None:
+        expires_delta = datetime.utcnow() + expires_delta
+    else:
+        expires_delta = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    
+    to_encode = {"exp": expires_delta, **subject}
+    encoded_jwt = jwt.encode(to_encode, JWT_SECRET_KEY, ALGORITHM)
+    return encoded_jwt
+
+
+def create_refresh_token(subject: Union[str, Any], expires_delta: int = None) -> str:
+    if expires_delta is not None:
+        expires_delta = datetime.utcnow() + expires_delta
+    else:
+        expires_delta = datetime.utcnow() + timedelta(minutes=REFRESH_TOKEN_EXPIRE_MINUTES)
+    
+    to_encode = {"exp": expires_delta, **subject}
+    encoded_jwt = jwt.encode(to_encode, JWT_REFRESH_SECRET_KEY, ALGORITHM)
+    return encoded_jwt