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

ElementX/Sources/Screens/HomeScreen/HomeScreenModels.swift

@@ -0,0 +1,77 @@
+// 
+// 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 Foundation
+import UIKit
+
+enum HomeScreenViewModelResult {
+    case logout
+    case loadUserAvatar
+    case selectRoom(roomIdentifier: String)
+}
+
+enum HomeScreenViewAction {
+    case logout
+    case loadUserAvatar
+    case loadRoomData(roomIdentifier: String)
+    case selectRoom(roomIdentifier: String)
+}
+
+struct HomeScreenViewState: BindableState {
+    let userDisplayName: String
+    var userAvatar: UIImage?
+    
+    var rooms: [HomeScreenRoom] = []
+    var isLoadingRooms: Bool = false
+    
+    var firstDirectRooms: [HomeScreenRoom] {
+        Array(rooms.filter { $0.isDirect }.prefix(5))
+    }
+    
+    var otherDirectRooms: [HomeScreenRoom] {
+        Array(rooms.filter { $0.isDirect }.dropFirst(5))
+    }
+    
+    var firstNondirectRooms: [HomeScreenRoom] {
+        Array(rooms.filter { !$0.isDirect }.prefix(5))
+    }
+    
+    var otherNondirectRooms: [HomeScreenRoom] {
+        Array(rooms.filter { !$0.isDirect }.dropFirst(5))
+    }
+}
+
+struct HomeScreenRoom: Identifiable {
+    let id: String
+    
+    var displayName: String?
+    
+    let topic: String?
+    let lastMessage: String?
+    
+    var avatar: UIImage?
+    
+    let isDirect: Bool
+    let isEncrypted: Bool
+}
+
+extension MutableCollection where Element == HomeScreenRoom {
+    mutating func updateEach(_ update: (inout Element) -> Void) {
+        for index in indices {
+            update(&self[index])
+        }
+    }
+}