move to IAuthZone

src/zone/extensions/IAuthZone.sol

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.17;
+
+interface IAuthZone {
+    event FilterUpdated(address indexed actor, Filter filter);
+
+    struct RangeFilter {
+        uint gt;
+        uint lt;
+    }
+
+    struct TokenFilter {
+        address token;
+        RangeFilter amount;
+    }
+
+    struct Filter {
+        address offerer;
+        TokenFilter[] offer;
+        TokenFilter consideration;
+        RangeFilter deadline;
+        RangeFilter nonce;
+    }
+
+    function setAuthorizationFilter(address actor, Filter calldata filter) external;
+
+    function authorizationFilter(address actor) external view returns (Filter memory);
+}

src/zone/extensions/IMainZone.sol

@@ -6,26 +6,6 @@ interface IMainZone {
 
     event SecondaryZoneSet(address indexed newSecondayZone);
 
-    event FilterUpdated(address indexed actor, Filter filter);
-
-    struct RangeFilter {
-        uint gt;
-        uint lt;
-    }
-
-    struct TokenFilter {
-        address token;
-        RangeFilter amount;
-    }
-
-    struct Filter {
-        address offerer;
-        TokenFilter[] offer;
-        TokenFilter consideration;
-        RangeFilter deadline;
-        RangeFilter nonce;
-    }
-
     /**
      * @notice Get the secondary zone address that performs additional validation for this zone.
      *
@@ -57,8 +37,4 @@ interface IMainZone {
      * @notice Restricted function to resume regular validation functionality.
      */
     function unpause() external;
-
-    function setAuthorizationFilter(address actor, Filter calldata filter) external;
-
-    function authorizationFilter(address actor) external view returns (Filter memory);
 }

src/zone/extensions/MainZone.sol

@@ -3,14 +3,15 @@ pragma solidity 0.8.17;
 
 // Inheritances
 import {IMainZone} from "./IMainZone.sol";
+import {IAuthZone} from "./IAuthZone.sol";
 import {Zone} from "../Zone.sol";
 import {AccessControlDefaultAdminRules} from "@openzeppelin/access/AccessControlDefaultAdminRules.sol";
 import {Pausable} from "@openzeppelin/security/Pausable.sol";
 
 // Interfaces
 import {IFloodPlain} from "../../flood-plain/IFloodPlain.sol";
 
-contract MainZone is Zone, IMainZone, AccessControlDefaultAdminRules, Pausable {
+contract MainZone is Zone, IMainZone, IAuthZone, AccessControlDefaultAdminRules, Pausable {
     bytes32 public constant CALLER_ROLE = keccak256("CALLER_ROLE");
     bytes32 public constant FULFILLER_ROLE = keccak256("FULFILLER_ROLE");
     bytes32 public constant BOOK_ROLE = keccak256("BOOK_ROLE");