import 'dart:async';

import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import '../app/authentication/auth_scope.dart';
import 'navigation/router/root.dart';
import '../pages/sort/provider/state.dart';
import 'navigation/helper/router_history.dart';
import 'navigation/transition/fade_page_transitions_builder.dart';


class UnitApp extends StatelessWidget {
  UnitApp({super.key});

  final GoRouter _router = GoRouter(
    routes: <RouteBase>[rootRoute],
    onException: (BuildContext ctx, GoRouterState state, GoRouter router) {
      router.go('/404', extra: state.uri.toString());
    },
    redirect: _authRedirect
  );

  late final RouterHistory _routerHistory = RouterHistory(
    _router.routerDelegate,
    exclusives: ['/login'],
  );
  final AuthResult _result = AuthResult();

  @override
  Widget build(BuildContext context) {
    return  AuthScope(
      notifier: _result,
      child: SortStateScope(
        notifier: SortState(),
        child: RouterHistoryScope(
            notifier: _routerHistory,
            child: MaterialApp.router(
              routerConfig: _router,
              theme: ThemeData(
                  fontFamily: "宋体",
                  scaffoldBackgroundColor: Colors.white,
                  pageTransitionsTheme: const PageTransitionsTheme(builders: {
                    TargetPlatform.android: ZoomPageTransitionsBuilder(),
                    TargetPlatform.iOS: CupertinoPageTransitionsBuilder(),
                    TargetPlatform.macOS: FadePageTransitionsBuilder(),
                    TargetPlatform.windows: FadePageTransitionsBuilder(),
                    TargetPlatform.linux: FadePageTransitionsBuilder(),
                  }),
                  appBarTheme: const AppBarTheme(
                      elevation: 0,
                      iconTheme: IconThemeData(color: Colors.black),
                      titleTextStyle: TextStyle(
                        color: Colors.black,
                        fontSize: 18,
                        fontWeight: FontWeight.bold,
                      ))),
              debugShowCheckedModeBanner: false,
              // home: AppNavigation()
            ),
          ),

      ),
    );
  }


}

FutureOr<String?> _authRedirect(BuildContext context, GoRouterState state) async{
   bool loggedIn = AuthScope.read(context).status==AuthStatus.success;
   if (!loggedIn) {
     return '/login';
   }
   return null;
}