initial commit

backend/app/services/auth.py

@@ -0,0 +1,56 @@
+from __future__ import annotations
+
+from datetime import date, datetime, timedelta
+from typing import Optional
+
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from sqlalchemy.orm import Session
+
+from app.config import settings
+from app.models import Profile, User
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def hash_password(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def verify_password(password: str, password_hash: str) -> bool:
+    return pwd_context.verify(password, password_hash)
+
+
+def create_access_token(subject: str = "user") -> str:
+    expire = datetime.utcnow() + timedelta(minutes=settings.access_token_expire_minutes)
+    return jwt.encode(
+        {"sub": subject, "exp": expire},
+        settings.secret_key,
+        algorithm="HS256",
+    )
+
+
+def decode_token(token: str) -> Optional[str]:
+    try:
+        payload = jwt.decode(token, settings.secret_key, algorithms=["HS256"])
+        return payload.get("sub")
+    except JWTError:
+        return None
+
+
+def get_or_create_profile(db: Session) -> Profile:
+    profile = db.query(Profile).first()
+    if not profile:
+        profile = Profile()
+        db.add(profile)
+        db.commit()
+        db.refresh(profile)
+    return profile
+
+
+def has_password(db: Session) -> bool:
+    return db.query(User).first() is not None
+
+
+def get_user(db: Session) -> Optional[User]:
+    return db.query(User).first()