Restructure into full project layout

backend/app/core/security.py

@@ -0,0 +1,43 @@
+from datetime import datetime, timedelta
+from typing import Optional
+
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+
+from app.core.config import settings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+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(subject: int) -> str:
+    expire = datetime.utcnow() + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    return jwt.encode(
+        {"sub": str(subject), "exp": expire, "type": "access"},
+        settings.SECRET_KEY,
+        algorithm=settings.ALGORITHM,
+    )
+
+
+def create_refresh_token(subject: int) -> str:
+    expire = datetime.utcnow() + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
+    return jwt.encode(
+        {"sub": str(subject), "exp": expire, "type": "refresh"},
+        settings.SECRET_KEY,
+        algorithm=settings.ALGORITHM,
+    )
+
+
+def decode_token(token: str) -> Optional[int]:
+    try:
+        payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM])
+        return int(payload["sub"])
+    except (JWTError, KeyError, ValueError):
+        return None