Implement MSC4155: Invite filtering (#29603)

* Add settings for MSC4155

* copyright

* Tweak to not use js-sdk

* Update for latest MSC

* Various tidyups

* Move tab

* i18n

* update .snap

* mvvm

* lint

* add header

* Remove capability check

* fix

* Rewrite to use Settings

* lint

* lint

* fix test

* Tweaks

* lint

* revert copyright

* update screenshot

* cleanup

src/@types/invite-rules.ts

@@ -0,0 +1,29 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE files in the repository root for full details.
+*/
+
+export const INVITE_RULES_ACCOUNT_DATA_TYPE = "org.matrix.msc4155.invite_permission_config";
+
+export interface InviteConfigAccountData {
+    allowed_users?: string[];
+    blocked_users?: string[];
+    ignored_users?: string[];
+    allowed_servers?: string[];
+    blocked_servers?: string[];
+    ignored_servers?: string[];
+}
+
+/**
+ * Computed values based on MSC4155. Currently Element Web only supports
+ * blocking all invites.
+ */
+export interface ComputedInviteConfig extends Record<string, unknown> {
+    /**
+     * Are all invites blocked. This is only about blocking all invites,
+     * but this being false may still block invites through other rules.
+     */
+    allBlocked: boolean;
+}

src/@types/matrix-js-sdk.d.ts

@@ -15,6 +15,7 @@ import type { EmptyObject } from "matrix-js-sdk/src/matrix";
 import type { DeviceClientInformation } from "../utils/device/types.ts";
 import type { UserWidget } from "../utils/WidgetUtils-types.ts";
 import { type MediaPreviewConfig } from "./media_preview.ts";
+import { type INVITE_RULES_ACCOUNT_DATA_TYPE, type InviteConfigAccountData } from "./invite-rules.ts";
 
 // Extend Matrix JS SDK types via Typescript declaration merging to support unspecced event fields and types
 declare module "matrix-js-sdk/src/types" {
@@ -60,7 +61,6 @@ declare module "matrix-js-sdk/src/types" {
             };
         };
     }
-
     export interface AccountDataEvents {
         // Analytics account data event
         "im.vector.analytics": {
@@ -89,6 +89,8 @@ declare module "matrix-js-sdk/src/types" {
             accepted: string[];
         };
 
+        // MSC4155: Invite filtering
+        [INVITE_RULES_ACCOUNT_DATA_TYPE]: InviteConfigAccountData;
         "io.element.msc4278.media_preview_config": MediaPreviewConfig;
     }