first commit

backend/app/core/security.py

@@ -0,0 +1,72 @@
+from datetime import datetime, timedelta, timezone
+
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+
+from app.core.config import Settings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+ALGORITHM = "HS256"
+TOKEN_TYPE_USER = "user"
+TOKEN_TYPE_ADMIN = "admin"
+
+
+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_user_access_token(user_id: int, settings: Settings) -> str:
+    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.access_token_expire_minutes)
+    payload = {
+        "sub": str(user_id),
+        "exp": expire,
+        "type": TOKEN_TYPE_USER,
+    }
+    return jwt.encode(payload, settings.secret_key, algorithm=ALGORITHM)
+
+
+def decode_user_access_token(token: str, settings: Settings) -> int | None:
+    try:
+        payload = jwt.decode(token, settings.secret_key, algorithms=[ALGORITHM])
+    except JWTError:
+        return None
+    if payload.get("type") != TOKEN_TYPE_USER:
+        return None
+    subject = payload.get("sub")
+    if not subject:
+        return None
+    try:
+        return int(subject)
+    except (TypeError, ValueError):
+        return None
+
+
+def create_admin_access_token(admin_id: int, settings: Settings) -> str:
+    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.access_token_expire_minutes)
+    payload = {
+        "sub": str(admin_id),
+        "exp": expire,
+        "type": TOKEN_TYPE_ADMIN,
+    }
+    return jwt.encode(payload, settings.secret_key, algorithm=ALGORITHM)
+
+
+def decode_admin_access_token(token: str, settings: Settings) -> int | None:
+    try:
+        payload = jwt.decode(token, settings.secret_key, algorithms=[ALGORITHM])
+    except JWTError:
+        return None
+    if payload.get("type") != TOKEN_TYPE_ADMIN:
+        return None
+    subject = payload.get("sub")
+    if not subject:
+        return None
+    try:
+        return int(subject)
+    except (TypeError, ValueError):
+        return None