Added support for own capabilities in the UI

Author: martinmitrevski

CHANGELOG.md

@@ -3,6 +3,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 # Upcoming
 
+### ✅ Added
+- Support for channel own capabilities in the UI
+
 ### 🐞 Fixed
 - Renaming of a channel in ChannelInfo not persisting extra data
 - Channel list item swipe gesture collision with native gesture

Sources/StreamChatSwiftUI/ChatChannel/ChannelInfo/ChatChannelInfoHelperViews.swift

@@ -118,6 +118,7 @@ struct ChannelNameUpdateView: View {
             TextField(L10n.ChatInfo.Rename.placeholder, text: $viewModel.channelName)
                 .font(fonts.body)
                 .foregroundColor(Color(colors.text))
+                .disabled(!viewModel.canRenameChannel)
 
             Spacer()
 

Sources/StreamChatSwiftUI/ChatChannel/ChannelInfo/ChatChannelInfoView.swift

@@ -66,32 +66,34 @@ public struct ChatChannelInfoView: View, KeyboardReadable {
                             Alert.defaultErrorAlert
                         }
 
-                    ChatChannelInfoButton(
-                        title: viewModel.leaveButtonTitle,
-                        iconName: "person.fill.xmark",
-                        foregroundColor: Color(colors.alert)
-                    ) {
-                        viewModel.leaveGroupAlertShown = true
-                    }
-                    .alert(isPresented: $viewModel.leaveGroupAlertShown) {
-                        let title = viewModel.leaveButtonTitle
-                        let message = viewModel.leaveConversationDescription
-                        let buttonTitle = viewModel.leaveButtonTitle
-                        
-                        return Alert(
-                            title: Text(title),
-                            message: Text(message),
-                            primaryButton: .destructive(Text(buttonTitle)) {
-                                viewModel.leaveConversationTapped {
-                                    if shownFromMessageList {
-                                        notifyChannelDismiss()
-                                    } else {
-                                        presentationMode.wrappedValue.dismiss()
+                    if viewModel.shouldShowLeaveConversationButton {
+                        ChatChannelInfoButton(
+                            title: viewModel.leaveButtonTitle,
+                            iconName: "person.fill.xmark",
+                            foregroundColor: Color(colors.alert)
+                        ) {
+                            viewModel.leaveGroupAlertShown = true
+                        }
+                        .alert(isPresented: $viewModel.leaveGroupAlertShown) {
+                            let title = viewModel.leaveButtonTitle
+                            let message = viewModel.leaveConversationDescription
+                            let buttonTitle = viewModel.leaveButtonTitle
+                            
+                            return Alert(
+                                title: Text(title),
+                                message: Text(message),
+                                primaryButton: .destructive(Text(buttonTitle)) {
+                                    viewModel.leaveConversationTapped {
+                                        if shownFromMessageList {
+                                            notifyChannelDismiss()
+                                        } else {
+                                            presentationMode.wrappedValue.dismiss()
+                                        }
                                     }
-                                }
-                            },
-                            secondaryButton: .cancel()
-                        )
+                                },
+                                secondaryButton: .cancel()
+                            )
+                        }
                     }
                 }
             }

Sources/StreamChatSwiftUI/ChatChannel/ChannelInfo/ChatChannelInfoViewModel.swift

@@ -36,6 +36,15 @@ public class ChatChannelInfoViewModel: ObservableObject, ChatChannelControllerDe
     @Published public var keyboardShown = false
     @Published public var addUsersShown = false
 
+    public var shouldShowLeaveConversationButton: Bool {
+        channel.ownCapabilities.contains(.deleteChannel)
+            || !channel.isDirectMessageChannel
+    }
+    
+    public var canRenameChannel: Bool {
+        channel.ownCapabilities.contains(.updateChannel)
+    }
+    
     private var channelController: ChatChannelController!
     private var memberListController: ChatChannelMemberListController!
     private var loadingUsers = false

Sources/StreamChatSwiftUI/ChatChannelList/ChatChannelSwipeableListItem.swift

@@ -255,14 +255,16 @@ public struct TrailingSwipeActionsView: View {
                         .foregroundColor(Color(colors.text))
                         .background(Color(colors.background1))
 
-                    ActionItemButton(imageName: "trash", action: {
-                        withAnimation {
-                            rightButtonTapped(channel)
-                        }
-                    })
-                        .frame(width: buttonWidth)
-                        .foregroundColor(Color(colors.textInverted))
-                        .background(Color(colors.alert))
+                    if channel.ownCapabilities.contains(.deleteChannel) {
+                        ActionItemButton(imageName: "trash", action: {
+                            withAnimation {
+                                rightButtonTapped(channel)
+                            }
+                        })
+                            .frame(width: buttonWidth)
+                            .foregroundColor(Color(colors.textInverted))
+                            .background(Color(colors.alert))
+                    }
                 }
             }
             .opacity(self.offsetX < -5 ? 1 : 0)

Sources/StreamChatSwiftUI/ChatChannelList/DefaultChannelActions.swift

@@ -57,13 +57,15 @@ extension ChannelAction {
             }
         }
 
-        let deleteConversation = deleteAction(
-            for: channel,
-            chatClient: chatClient,
-            onDismiss: onDismiss,
-            onError: onError
-        )
-        actions.append(deleteConversation)
+        if channel.ownCapabilities.contains(.deleteChannel) {
+            let deleteConversation = deleteAction(
+                for: channel,
+                chatClient: chatClient,
+                onDismiss: onDismiss,
+                onError: onError
+            )
+            actions.append(deleteConversation)
+        }
 
         let cancel = ChannelAction(
             title: L10n.Alert.Actions.cancel,

Sources/StreamChatSwiftUI/DefaultViewFactory.swift

@@ -88,6 +88,7 @@ extension ViewFactory {
             channelListItem: listItem,
             swipedChannelId: swipedChannelId,
             channel: channel,
+            numberOfTrailingItems: channel.ownCapabilities.contains(.deleteChannel) ? 2 : 1,
             trailingRightButtonTapped: trailingSwipeRightButtonTapped,
             trailingLeftButtonTapped: trailingSwipeLeftButtonTapped,
             leadingSwipeButtonTapped: leadingSwipeButtonTapped

StreamChatSwiftUITests/Tests/ChatChannel/ChannelInfo/ChatChannelInfoViewModel_Tests.swift

@@ -186,16 +186,86 @@ class ChatChannelInfoViewModel_Tests: StreamChatTestCase {
         XCTAssert(viewModel.channelName == newName)
     }
 
+    func test_chatChannelInfoVM_canRenameGroup() {
+        // Given
+        let channel = mockGroup(with: 5)
+        let viewModel = ChatChannelInfoViewModel(channel: channel)
+        
+        // When
+        let canRenameChannel = viewModel.canRenameChannel
+        
+        // Then
+        XCTAssert(canRenameChannel == true)
+    }
+    
+    func test_chatChannelInfoVM_canNotRenameGroup() {
+        // Given
+        let channel = mockGroup(with: 5, updateCapabilities: false)
+        let viewModel = ChatChannelInfoViewModel(channel: channel)
+        
+        // When
+        let canRenameChannel = viewModel.canRenameChannel
+        
+        // Then
+        XCTAssert(canRenameChannel == false)
+    }
+    
+    func test_chatChannelInfoVM_leaveButtonShownInGroup() {
+        // Given
+        let channel = mockGroup(with: 5)
+        let viewModel = ChatChannelInfoViewModel(channel: channel)
+        
+        // When
+        let leaveButton = viewModel.shouldShowLeaveConversationButton
+        
+        // Then
+        XCTAssert(leaveButton == true)
+    }
+    
+    func test_chatChannelInfoVM_leaveButtonShownInDM() {
+        // Given
+        let channel = ChatChannel.mock(
+            cid: .unique,
+            name: "Test",
+            ownCapabilities: [.deleteChannel]
+        )
+        let viewModel = ChatChannelInfoViewModel(channel: channel)
+        
+        // When
+        let leaveButton = viewModel.shouldShowLeaveConversationButton
+        
+        // Then
+        XCTAssert(leaveButton == true)
+    }
+    
+    func test_chatChannelInfoVM_leaveButtonHiddenInDM() {
+        // Given
+        let channel = ChatChannel.mockDMChannel()
+        let viewModel = ChatChannelInfoViewModel(channel: channel)
+        
+        // When
+        let leaveButton = viewModel.shouldShowLeaveConversationButton
+        
+        // Then
+        XCTAssert(leaveButton == false)
+    }
+    
     // MARK: - private
 
-    private func mockGroup(with memberCount: Int) -> ChatChannel {
+    private func mockGroup(with memberCount: Int, updateCapabilities: Bool = true) -> ChatChannel {
         let cid: ChannelId = .unique
         let activeMembers = ChannelInfoMockUtils.setupMockMembers(
             count: memberCount,
             currentUserId: chatClient.currentUserId!
         )
+        var capabilities = Set<ChannelCapability>()
+        if updateCapabilities {
+            capabilities.insert(.updateChannel)
+            capabilities.insert(.deleteChannel)
+        }
         let channel = ChatChannel.mock(
             cid: cid,
+            ownCapabilities: capabilities,
             lastActiveMembers: activeMembers,
             memberCount: activeMembers.count
         )

StreamChatSwiftUITests/Tests/ChatChannel/ChannelInfo/ChatChannelInfoView_Tests.swift

@@ -79,6 +79,7 @@ class ChatChannelInfoView_Tests: StreamChatTestCase {
         let group = ChatChannel.mock(
             cid: .unique,
             name: "Test Group",
+            ownCapabilities: [.deleteChannel, .updateChannel],
             lastActiveMembers: members,
             memberCount: members.count
         )
@@ -101,6 +102,7 @@ class ChatChannelInfoView_Tests: StreamChatTestCase {
         let group = ChatChannel.mock(
             cid: .unique,
             name: "Test Group",
+            ownCapabilities: [.deleteChannel, .updateChannel],
             lastActiveMembers: members,
             memberCount: members.count
         )
@@ -123,6 +125,7 @@ class ChatChannelInfoView_Tests: StreamChatTestCase {
         let group = ChatChannel.mock(
             cid: .unique,
             name: "Test Group",
+            ownCapabilities: [.deleteChannel, .updateChannel],
             lastActiveMembers: members,
             memberCount: members.count
         )
@@ -147,6 +150,7 @@ class ChatChannelInfoView_Tests: StreamChatTestCase {
         let group = ChatChannel.mock(
             cid: .unique,
             name: "Test Group",
+            ownCapabilities: [.deleteChannel, .updateChannel],
             lastActiveMembers: members,
             memberCount: members.count
         )
@@ -175,6 +179,7 @@ class ChatChannelInfoView_Tests: StreamChatTestCase {
         let group = ChatChannel.mock(
             cid: .unique,
             name: "Test Group",
+            ownCapabilities: [.deleteChannel, .updateChannel],
             lastActiveMembers: members,
             memberCount: members.count
         )