import 'package:go_router/go_router.dart';
import 'package:provider/provider.dart';
import 'package:seshat/config/constants.dart';
import 'package:seshat/data/repositories/auth_repository.dart';
import 'package:seshat/routing/routes.dart';
import 'package:seshat/ui/add_page/view_model/add_view_model.dart';
import 'package:seshat/ui/add_page/widgets/add_page.dart';
import 'package:seshat/ui/auth/viewmodel/login_view_model.dart';
import 'package:seshat/ui/auth/widgets/login_page.dart';
import 'package:seshat/ui/bal_page/view_model/bal_view_model.dart';
import 'package:seshat/ui/bal_page/widget/bal_page.dart';
import 'package:seshat/ui/home_page/view_model/home_view_model.dart';
import 'package:seshat/ui/home_page/widgets/home_page.dart';
import 'package:seshat/ui/sell_page/view_model/sell_view_model.dart';
import 'package:seshat/ui/sell_page/widgets/sell_page.dart';
import 'package:seshat/utils/result.dart';

GoRouter router(AuthRepository authRepository) => GoRouter(
  initialLocation: Routes.add,
  redirect: (context, state) async {
    final loggedIn = await context.read<AuthRepository>().isLoggedIn;
    final result = await context.read<AuthRepository>().getRemoteApiVersion();
    bool isUpToDate = false;
    switch (result) {
      case Ok():
        isUpToDate = result.value == apiVersion;
        break;
      default:
        break;
    }
    final logginIn = state.matchedLocation == Routes.login;

    if (!loggedIn || !isUpToDate) {
      return Routes.login;
    }

    if (logginIn) {
      return Routes.add;
    }

    return null;
  },
  refreshListenable: authRepository,
  routes: [
    GoRoute(
      path: Routes.home,
      pageBuilder: (context, state) {
        final viewModel = HomeViewModel(balRepository: context.read());
        return NoTransitionPage(child: HomePage(viewModel: viewModel));
      },
      routes: [
        GoRoute(
          path: Routes.balPage,
          name: "bal",
          pageBuilder: (context, state) {
            final viewModel = BalViewModel(
              balRepository: context.read(),
              id: int.tryParse(state.pathParameters["id"] ?? ""),
            );
            return NoTransitionPage(child: BalPage(viewModel: viewModel));
          },
        ),
        GoRoute(
          path: Routes.add,
          pageBuilder: (context, state) {
            final viewModel = AddViewModel(
              ownerRepository: context.read(),
              bookRepository: context.read(),
              bookInstanceRepository: context.read(),
              balRepository: context.read(),
            );
            return NoTransitionPage(child: AddPage(viewModel: viewModel));
          },
          // routes: [
          // GoRoute(path: Routes.addForm),
          // GoRoute(path: Routes.addOwner),
          // GoRoute(path: Routes.addPrice),
          // ],
        ),
        GoRoute(
          path: Routes.sell,
          pageBuilder: (context, state) {
            final viewModel = SellViewModel(
              balRepository: context.read(),
              bookInstanceRepository: context.read(),
              bookRepository: context.read(),
              ownerRepository: context.read(),
            );
            return NoTransitionPage(child: SellPage(viewModel: viewModel));
          },
        ),
        GoRoute(
          path: Routes.login,
          pageBuilder: (context, state) {
            final viewModel = LoginViewModel(authRepository: context.read());
            return NoTransitionPage(child: LoginPage(viewModel: viewModel));
          },
        ),
      ],
    ),
  ],
);