Added room timeline screen with live events listening and back pagination. Rearranged project files.

2026-11-03 06:55:59 +00:00 · 2022-03-08 14:24:33 +02:00
parent f403c59b95
commit c22d9689d4
77 changed files with 1269 additions and 491 deletions
@@ -0,0 +1,74 @@
+//
+// Copyright 2021 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+
+@available(iOS 14, *)
+typealias RoomScreenViewModelType = StateStoreViewModel<RoomScreenViewState,
+                                                                  Never,
+                                                                  RoomScreenViewAction>
+@available(iOS 14, *)
+class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol {
+    
+    private struct Constants {
+        static let backPaginationPageSize: UInt = 20
+    }
+
+    private let roomProxy: RoomProxyProtocol
+    private let timelineController: RoomTimelineControllerProtocol
+
+    var completion: ((RoomScreenViewModelResult) -> Void)?
+
+    // MARK: - Setup
+
+    init(roomProxy: RoomProxyProtocol, timelineController: RoomTimelineControllerProtocol) {
+        self.roomProxy = roomProxy
+        self.timelineController = timelineController
+        
+        super.init(initialViewState: RoomScreenViewState())
+        
+        state.messages = buildRoomScreenMessages(timelineController.timelineItems)
+        
+        timelineController.callbacks.sink { [weak self] callback in
+            guard let self = self else { return }
+            
+            switch callback {
+            case .updatedTimelineItems:
+                self.state.messages = self.buildRoomScreenMessages(timelineController.timelineItems)
+            }
+        }.store(in: &cancellables)
+        
+        timelineController.paginateBackwards(Constants.backPaginationPageSize)
+    }
+
+    // MARK: - Public
+
+    override func process(viewAction: RoomScreenViewAction) {
+        switch viewAction {
+        case .loadPreviousPage:
+            timelineController.paginateBackwards(Constants.backPaginationPageSize)
+        }
+    }
+    
+    // MARK: - Private
+    
+    private func buildRoomScreenMessages(_ timelineItems: [RoomTimelineItemProtocol]) -> [RoomScreenMessage] {
+        timelineItems.map { RoomScreenMessage(id: $0.id,
+                                              sender: $0.senderDisplayName,
+                                              text: $0.text,
+                                              originServerTs: $0.originServerTs) }
+    }
+}