Adopt the lastest SDK APIs and refactor how we deal with user permissions.

This patch introduces a new RoomPowerLevelsProxy and its associated mock and adopts newer Rust APIs to make working with user power levels and permissions easier.

ElementX/Sources/Mocks/JoinedRoomProxyMock.swift

@@ -89,9 +89,8 @@ extension JoinedRoomProxyMock {
         markAsReadReceiptTypeReturnValue = .success(())
         flagAsFavouriteReturnValue = .success(())
         
-        powerLevelsReturnValue = .success(.mock)
         applyPowerLevelChangesReturnValue = .success(())
-        resetPowerLevelsReturnValue = .success(.mock)
+        resetPowerLevelsReturnValue = .success(())
         suggestedRoleForClosure = { [weak self] userID in
             guard case .success(let member) = await self?.getMember(userID: userID) else {
                 return .failure(.sdkError(RoomProxyMockError.generic))
@@ -99,22 +98,27 @@ extension JoinedRoomProxyMock {
             return .success(member.role)
         }
         updatePowerLevelsForUsersReturnValue = .success(())
-        canUserUserIDSendMessageReturnValue = .success(configuration.canUserSendMessage)
-        canUserUserIDSendStateEventClosure = { [weak self] userID, _ in
+        
+        let powerLevelsProxyMock = RoomPowerLevelsProxyMock(configuration: .init())
+        
+        powerLevelsProxyMock.canUserUserIDSendMessageReturnValue = .success(configuration.canUserSendMessage)
+        powerLevelsProxyMock.canUserUserIDSendStateEventClosure = { [weak self] userID, _ in
             .success(self?.membersPublisher.value.first { $0.userID == userID }?.role ?? .user != .user)
         }
-        canUserInviteUserIDReturnValue = .success(configuration.canUserInvite)
-        canUserRedactOtherUserIDReturnValue = .success(false)
-        canUserRedactOwnUserIDReturnValue = .success(true)
-        canUserKickUserIDClosure = { [weak self] userID in
+        powerLevelsProxyMock.canUserInviteUserIDReturnValue = .success(configuration.canUserInvite)
+        powerLevelsProxyMock.canUserRedactOtherUserIDReturnValue = .success(false)
+        powerLevelsProxyMock.canUserRedactOwnUserIDReturnValue = .success(true)
+        powerLevelsProxyMock.canUserKickUserIDClosure = { [weak self] userID in
             .success(self?.membersPublisher.value.first { $0.userID == userID }?.role ?? .user != .user)
         }
-        canUserBanUserIDClosure = { [weak self] userID in
+        powerLevelsProxyMock.canUserBanUserIDClosure = { [weak self] userID in
             .success(self?.membersPublisher.value.first { $0.userID == userID }?.role ?? .user != .user)
         }
-        canUserTriggerRoomNotificationUserIDReturnValue = .success(configuration.canUserTriggerRoomNotification)
-        canUserJoinCallUserIDReturnValue = .success(configuration.canUserJoinCall)
-        canUserPinOrUnpinUserIDReturnValue = .success(configuration.canUserPin)
+        powerLevelsProxyMock.canUserTriggerRoomNotificationUserIDReturnValue = .success(configuration.canUserTriggerRoomNotification)
+        powerLevelsProxyMock.canUserJoinCallUserIDReturnValue = .success(configuration.canUserJoinCall)
+        powerLevelsProxyMock.canUserPinOrUnpinUserIDReturnValue = .success(configuration.canUserPin)
+        
+        powerLevelsReturnValue = .success(powerLevelsProxyMock)
         
         kickUserReasonReturnValue = .success(())
         banUserReasonReturnValue = .success(())

ElementX/Sources/Mocks/RoomPowerLevelsProxyMock.swift

@@ -0,0 +1,44 @@
+//
+// Copyright 2025 New Vector Ltd.
+//
+// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+// Please see LICENSE files in the repository root for full details.
+//
+
+import MatrixRustSDK
+
+extension RoomPowerLevelsProxyMock {
+    struct Configuration { }
+    
+    convenience init(configuration: Configuration) {
+        self.init()
+        
+        underlyingValues = RoomPowerLevelsValues.mock
+        
+        canUserUserIDSendMessageReturnValue = .success(true)
+        canUserUserIDSendStateEventReturnValue = .success(true)
+        canUserInviteUserIDReturnValue = .success(true)
+        canUserRedactOtherUserIDReturnValue = .success(true)
+        canUserRedactOwnUserIDReturnValue = .success(true)
+        canUserKickUserIDReturnValue = .success(true)
+        canUserBanUserIDReturnValue = .success(true)
+        canUserTriggerRoomNotificationUserIDReturnValue = .success(true)
+        canUserPinOrUnpinUserIDReturnValue = .success(true)
+        canUserJoinCallUserIDReturnValue = .success(true)
+    }
+}
+
+extension RoomPowerLevelsValues {
+    static var mock: RoomPowerLevelsValues {
+        RoomPowerLevelsValues(ban: 50,
+                              invite: 0,
+                              kick: 50,
+                              redact: 50,
+                              eventsDefault: 0,
+                              stateDefault: 50,
+                              usersDefault: 0,
+                              roomName: 50,
+                              roomAvatar: 50,
+                              roomTopic: 50)
+    }
+}