Split backend into multiple files

backend/utils.py

@@ -0,0 +1,33 @@
+from datetime import datetime, timedelta
+import jwt
+from typing import Optional
+import bcrypt
+
+from constants import *
+
+# JWT Helper Functions
+def create_token(user_id: int, username: str) -> str:
+    expire = datetime.now() + timedelta(hours=ACCESS_TOKEN_EXPIRE_HOURS)
+    payload = {
+        "user_id": user_id,
+        "username": username,
+        "exp": expire
+    }
+    return jwt.encode(payload, JWT_SECRET_KEY, algorithm=JWT_ALGORITHM)
+
+
+def verify_token(token: str) -> Optional[dict]:
+    try:
+        payload = jwt.decode(token, JWT_SECRET_KEY, algorithms=[JWT_ALGORITHM])
+        return payload
+    except jwt.ExpiredSignatureError:
+        return None
+    except jwt.InvalidTokenError:
+        return None
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return bcrypt.checkpw(plain_password.encode("utf-8"), hashed_password.encode("utf-8"))
+
+def get_password_hash(password: str) -> str:
+    return bcrypt.hashpw(password.encode("utf-8"), bcrypt.gensalt()).decode("utf-8")