//
//  URLDisplayAppApp.swift
//  URLDisplayApp
//
//  Created by Eli Slothower on 3/12/25.
//

import SwiftUI
import SwiftData

// You can keep NavigationManager here or move it to its own file.
class NavigationManager: ObservableObject {
    static let shared = NavigationManager()
    @Published var sharedURL: URL? = nil
    
    func navigateToURL(_ url: URL) {
        sharedURL = url
    }
}

// The AppDelegate that handles deep linking
import UIKit
class AppDelegate: UIResponder, UIApplicationDelegate {
    func application(_ application: UIApplication,
                     open url: URL,
                     options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
        print("AppDelegate triggered with URL: \(url)")
        // (Your URL parsing and handling code follows here)
        guard let components = URLComponents(url: url, resolvingAgainstBaseURL: true),
              components.scheme == "myapp",
              components.host == "share",
              let queryItem = components.queryItems?.first(where: { $0.name == "url" }),
              let sharedURLString = queryItem.value,
              let sharedURL = URL(string: sharedURLString) else {
            return false
        }
        
        NavigationManager.shared.navigateToURL(sharedURL)
        return true
    }

}

@main
struct MyApp: App {
    // Connect your AppDelegate to the SwiftUI lifecycle.
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
    @StateObject private var navManager = NavigationManager.shared
    
    var body: some Scene {
        WindowGroup {
            ContentView()
                .environmentObject(navManager)
                .onOpenURL { url in
                    // Optional fallback if needed; the AppDelegate should already handle it.
                    handleSharedURL(url)
                }
        }
    }

    private func handleSharedURL(_ url: URL) {
        guard let components = URLComponents(url: url, resolvingAgainstBaseURL: true),
              components.scheme == "myapp",
              components.host == "share",
              let queryItem = components.queryItems?.first(where: { $0.name == "url" }),
              let sharedURLString = queryItem.value,
              let sharedURL = URL(string: sharedURLString) else {
            return
        }
        navManager.navigateToURL(sharedURL)
    }
}