Kordophone/kordophone2/App.swift

//
//  kordophone2App.swift
//  kordophone2
//
//  Created by James Magahern on 8/24/25.
//

import SwiftUI

@main
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: {
                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
                    }
            }
        }
    }
    
    private func refreshConversations() async {
        do {
            let conversations = try await xpcClient.getConversations()
            conversationListModel.conversations = conversations.map { Display.Conversation(from: $0) }
        } catch {
            reportError(error)
        }
    }
    
    private func reportError(_ e: Error) {
        // Just printing for now.
        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)
    }
}