Moderation tweaks (#2548)

* Only allow admins to see the roles and permissions screen.

* Hide the selection checkbox on Admins when changing roles.

* Show an empty state for banned users.

* Add separate actions for ban and remove.

* Implement reset permissions and demote self alerts.

* Add tests for resetting permissions and demoting self.

* Add a warning when promoting someone to administrator.

ElementX/Sources/Mocks/Generated/GeneratedMocks.swift

@@ -2750,6 +2750,44 @@ class RoomProxyMock: RoomProxyProtocol {
             return applyPowerLevelChangesReturnValue
         }
     }
+    //MARK: - resetPowerLevels
+
+    var resetPowerLevelsCallsCount = 0
+    var resetPowerLevelsCalled: Bool {
+        return resetPowerLevelsCallsCount > 0
+    }
+    var resetPowerLevelsReturnValue: Result<RoomPowerLevels, RoomProxyError>!
+    var resetPowerLevelsClosure: (() async -> Result<RoomPowerLevels, RoomProxyError>)?
+
+    func resetPowerLevels() async -> Result<RoomPowerLevels, RoomProxyError> {
+        resetPowerLevelsCallsCount += 1
+        if let resetPowerLevelsClosure = resetPowerLevelsClosure {
+            return await resetPowerLevelsClosure()
+        } else {
+            return resetPowerLevelsReturnValue
+        }
+    }
+    //MARK: - suggestedRole
+
+    var suggestedRoleForCallsCount = 0
+    var suggestedRoleForCalled: Bool {
+        return suggestedRoleForCallsCount > 0
+    }
+    var suggestedRoleForReceivedUserID: String?
+    var suggestedRoleForReceivedInvocations: [String] = []
+    var suggestedRoleForReturnValue: Result<RoomMemberRole, RoomProxyError>!
+    var suggestedRoleForClosure: ((String) async -> Result<RoomMemberRole, RoomProxyError>)?
+
+    func suggestedRole(for userID: String) async -> Result<RoomMemberRole, RoomProxyError> {
+        suggestedRoleForCallsCount += 1
+        suggestedRoleForReceivedUserID = userID
+        suggestedRoleForReceivedInvocations.append(userID)
+        if let suggestedRoleForClosure = suggestedRoleForClosure {
+            return await suggestedRoleForClosure(userID)
+        } else {
+            return suggestedRoleForReturnValue
+        }
+    }
     //MARK: - updatePowerLevelsForUsers
 
     var updatePowerLevelsForUsersCallsCount = 0

ElementX/Sources/Mocks/RoomProxyMock.swift

@@ -42,7 +42,6 @@ struct RoomProxyMockConfiguration {
     }()
     
     var members: [RoomMemberProxyMock] = .allMembers
-    var memberForID: RoomMemberProxyMock = .mockMe
     var ownUserID = RoomMemberProxyMock.mockMe.userID
     
     var canUserInvite = true
@@ -81,7 +80,12 @@ extension RoomProxyMock {
         underlyingActionsPublisher = Empty(completeImmediately: false).eraseToAnyPublisher()
         setNameClosure = { _ in .success(()) }
         setTopicClosure = { _ in .success(()) }
-        getMemberUserIDReturnValue = .success(configuration.memberForID)
+        getMemberUserIDClosure = { [weak self] userID in
+            guard let member = self?.membersPublisher.value.first(where: { $0.userID == userID }) else {
+                return .failure(.failedRetrievingMember)
+            }
+            return .success(member)
+        }
 
         flagAsUnreadReturnValue = .success(())
         markAsReadReceiptTypeReturnValue = .success(())
@@ -90,6 +94,13 @@ extension RoomProxyMock {
         
         powerLevelsReturnValue = .success(.mock)
         applyPowerLevelChangesReturnValue = .success(())
+        resetPowerLevelsReturnValue = .success(.mock)
+        suggestedRoleForClosure = { [weak self] userID in
+            guard case .success(let member) = await self?.getMember(userID: userID) else {
+                return .failure(.failedCheckingPermission)
+            }
+            return .success(member.role)
+        }
         updatePowerLevelsForUsersReturnValue = .success(())
         canUserUserIDSendStateEventClosure = { [weak self] userID, _ in
             .success(self?.membersPublisher.value.first { $0.userID == userID }?.role ?? .user != .user)