Adds getting/sending messages

kordophone2/App.swift

@@ -11,19 +11,33 @@ import SwiftUI
 struct KordophoneApp: App
 {
     @State var conversationListModel = ConversationListView.ViewModel()
+    @State var transcriptViewModel = ChatTranscriptView.ViewModel()
+    @State var entryViewModel = MessageEntryView.ViewModel()
     
     private let xpcClient = XPCClient()
+    private var selectedConversation: Display.Conversation? {
+        guard let id = conversationListModel.selectedConversations.first else { return nil }
+        return conversationListModel.conversations.first { $0.id == id }
+    }
     
     var body: some Scene {
         WindowGroup {
             NavigationSplitView {
                 ConversationListView(model: $conversationListModel)
                     .frame(minWidth: 330.0)
+                    .xpcClient(xpcClient)
                     .task {
                         await refreshConversations()
                     }
             } detail: {
-                // Detail
+                ConversationView(transcriptModel: $transcriptViewModel, entryModel: $entryViewModel)
+                    .xpcClient(xpcClient)
+                    .selectedConversation(selectedConversation)
+                    .navigationTitle("Kordophone")
+                    .navigationSubtitle(selectedConversation?.displayName ?? "")
+                    .onChange(of: conversationListModel.selectedConversations) { oldValue, newValue in
+                        transcriptViewModel.displayedConversation = newValue.first
+                    }
             }
         }
     }
@@ -42,3 +56,21 @@ struct KordophoneApp: App
         print("Error: \(e.localizedDescription)")
     }
 }
+
+extension EnvironmentValues
+{
+    @Entry var xpcClient: XPCClient = XPCClient()
+    @Entry var selectedConversation: Display.Conversation? = nil
+}
+
+extension View
+{
+    func xpcClient(_ client: XPCClient) -> some View {
+        environment(\.xpcClient, client)
+    }
+    
+    func selectedConversation(_ convo: Display.Conversation?) -> some View {
+        environment(\.selectedConversation, convo)
+    }
+}
+