Initial commit: import from sinmb79/Gov-chat-bot

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/core/security.py

@@ -0,0 +1,44 @@
+from datetime import datetime, timedelta, timezone
+from typing import Optional
+
+import bcrypt
+import jwt
+
+from app.core.config import settings
+
+
+def hash_password(password: str) -> str:
+    return bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()
+
+
+def verify_password(plain: str, hashed: str) -> bool:
+    return bcrypt.checkpw(plain.encode(), hashed.encode())
+
+
+def create_admin_token(user_id: str, tenant_id: str, role: str) -> str:
+    payload = {
+        "sub": user_id,
+        "tenant_id": tenant_id,
+        "role": role,
+        "type": "admin_user",
+        "exp": datetime.now(timezone.utc) + timedelta(hours=settings.JWT_EXPIRE_HOURS),
+    }
+    return jwt.encode(payload, settings.SECRET_KEY, algorithm="HS256")
+
+
+def create_system_token(sys_admin_id: str) -> str:
+    payload = {
+        "sub": sys_admin_id,
+        "tenant_id": None,
+        "role": "system",
+        "type": "system_admin",
+        "exp": datetime.now(timezone.utc) + timedelta(hours=settings.JWT_EXPIRE_HOURS),
+    }
+    return jwt.encode(payload, settings.SECRET_KEY, algorithm="HS256")
+
+
+def decode_token(token: str) -> Optional[dict]:
+    try:
+        return jwt.decode(token, settings.SECRET_KEY, algorithms=["HS256"])
+    except Exception:
+        return None