//
//  oAIApp.swift
//  oAI
//
//  Main app entry point
//
// SPDX-License-Identifier: AGPL-3.0-or-later
// Copyright (C) 2026 Rune Olsen
//
// This file is part of oAI.
//
// oAI is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// oAI is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
// Public License for more details.
//
// You should have received a copy of the GNU Affero General Public
// License along with oAI. If not, see <https://www.gnu.org/licenses/>.


import SwiftUI
#if os(macOS)
import AppKit
#endif

@main
struct oAIApp: App {
    @State private var chatViewModel = ChatViewModel()
    @State private var showAbout = false

    init() {
        // Start email handler on app launch
        EmailHandlerService.shared.start()

        // Sync Git changes on app launch (pull + import)
        Task {
            await GitSyncService.shared.syncOnStartup()
        }
    }

    var body: some Scene {
        WindowGroup {
            ContentView()
                .environment(chatViewModel)
                .preferredColorScheme(.dark)
                .sheet(isPresented: $showAbout) {
                    AboutView()
                }
                #if os(macOS)
                .onReceive(NotificationCenter.default.publisher(for: NSApplication.willTerminateNotification)) { _ in
                    // Trigger auto-save on app quit
                    Task {
                        await chatViewModel.onAppWillTerminate()
                    }
                }
                #endif
        }
        #if os(macOS)
        .windowStyle(.hiddenTitleBar)
        .windowToolbarStyle(.unified)
        .defaultSize(width: 1024, height: 800)
        .windowResizability(.contentMinSize)
        .commands {
            CommandGroup(replacing: .appInfo) {
                Button("About oAI") {
                    showAbout = true
                }
            }

            CommandGroup(replacing: .appSettings) {
                Button("Settings...") {
                    chatViewModel.showSettings = true
                }
                .keyboardShortcut(",", modifiers: .command)
            }

            CommandGroup(replacing: .help) {
                Button("oAI Help") {
                    openHelp()
                }
                .keyboardShortcut("?", modifiers: .command)
            }
        }
        #endif
    }

    #if os(macOS)
    private func openHelp() {
        if let helpBookURL = Bundle.main.url(forResource: "oAI.help", withExtension: nil) {
            NSWorkspace.shared.open(helpBookURL.appendingPathComponent("Contents/Resources/en.lproj/index.html"))
        } else {
            // Fallback to Apple Help if help book not found
            NSHelpManager.shared.openHelpAnchor("", inBook: Bundle.main.object(forInfoDictionaryKey: "CFBundleHelpBookName") as? String)
        }
    }
    #endif
}