refactors

backend/models/enums.py

@@ -0,0 +1,59 @@
+from enum import Enum as PyEnum
+
+
+class Permission(str, PyEnum):
+    """All available permissions in the system."""
+
+    # Audit permissions
+    VIEW_AUDIT = "view_audit"
+    FETCH_PRICE = "fetch_price"
+
+    # Profile permissions
+    MANAGE_OWN_PROFILE = "manage_own_profile"
+
+    # Invite permissions
+    MANAGE_INVITES = "manage_invites"
+    VIEW_OWN_INVITES = "view_own_invites"
+
+    # Exchange permissions (regular users)
+    CREATE_EXCHANGE = "create_exchange"
+    VIEW_OWN_EXCHANGES = "view_own_exchanges"
+    CANCEL_OWN_EXCHANGE = "cancel_own_exchange"
+
+    # Availability/Exchange permissions (admin)
+    MANAGE_AVAILABILITY = "manage_availability"
+    VIEW_ALL_EXCHANGES = "view_all_exchanges"
+    CANCEL_ANY_EXCHANGE = "cancel_any_exchange"
+    COMPLETE_EXCHANGE = "complete_exchange"
+
+
+class InviteStatus(str, PyEnum):
+    """Status of an invite."""
+
+    READY = "ready"
+    SPENT = "spent"
+    REVOKED = "revoked"
+
+
+class ExchangeStatus(str, PyEnum):
+    """Status of an exchange trade."""
+
+    BOOKED = "booked"
+    COMPLETED = "completed"
+    CANCELLED_BY_USER = "cancelled_by_user"
+    CANCELLED_BY_ADMIN = "cancelled_by_admin"
+    NO_SHOW = "no_show"
+
+
+class TradeDirection(str, PyEnum):
+    """Direction of a trade from the user's perspective."""
+
+    BUY = "buy"  # User buys BTC, gives EUR
+    SELL = "sell"  # User sells BTC, gets EUR
+
+
+class BitcoinTransferMethod(str, PyEnum):
+    """Bitcoin transfer method for exchange trades."""
+
+    ONCHAIN = "onchain"
+    LIGHTNING = "lightning"