df/frontend/app/lib/pages/dashboard_page.dart

import 'package:app/gapi/client.dart';
import 'package:app/pages/start_page.dart';
import 'package:app/pb/account_info.pb.dart';
import 'package:app/pb/rpc_get_account_info.pb.dart';
import 'package:app/widgets/background.dart';
import 'package:app/widgets/bottom_bar.dart';
import 'package:app/widgets/loading_widget.dart';
import 'package:app/widgets/side_drawer.dart';
import 'package:flutter/material.dart';

class DashboardPage extends StatefulWidget {
  const DashboardPage({
    super.key,
    required this.client,
  });

  final GClient client;

  @override
  State<DashboardPage> createState() => _DashboardPageState();
}

class _DashboardPageState extends State<DashboardPage> {
  bool _loading = false;
  late AccountInfo accountInfo;

  void _setLoading(bool loading) {
    setState(() {
      _loading = loading;
    });
  }

  @override
  void initState() {
    super.initState();

    _setLoading(true);
    widget.client.getAccountInfo(
      GetAccountInfoRequest(
        accountId: widget.client.session.accountId,
      ),
      onError: ({String? msg}) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: const Text('AccountInfo konnte nicht geladen werden'),
            action: msg != null
                ? SnackBarAction(
                    label: 'Details',
                    textColor: Colors.grey,
                    onPressed: () {
                      showDialog(
                        context: context,
                        builder: (context) {
                          return AlertDialog(
                            content: Text(
                              msg,
                              textAlign: TextAlign.center,
                              style: const TextStyle(color: Colors.black),
                            ),
                            icon: const Icon(
                              Icons.warning,
                              color: Colors.red,
                            ),
                          );
                        },
                      );
                    })
                : null,
          ),
        );
      },
    ).then((value) {
      accountInfo = value.accountInfo;
      _setLoading(false);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Background(
      child: Scaffold(
        appBar: AppBar(
          automaticallyImplyLeading: false,
          flexibleSpace: Image.asset(
            'lib/assets/logo_300x200.png',
            height: 80,
          ),
        ),
        drawer: Builder(builder: (context) {
          return SideDrawer(
            children: [
              const Spacer(),
              TextButton(
                onPressed: () {
                  Scaffold.of(context).closeDrawer();
                },
                child: const Row(
                  children: [
                    Text(
                      'About',
                      style: TextStyle(fontSize: 20),
                    ),
                    Spacer(),
                    Icon(
                      Icons.question_answer,
                      color: Colors.white,
                    ),
                  ],
                ),
              ),
              TextButton(
                onPressed: () {
                  Scaffold.of(context).closeDrawer();
                },
                child: const Row(
                  children: [
                    Text(
                      'Datenschutz',
                      style: TextStyle(fontSize: 20),
                    ),
                    Spacer(),
                    Icon(
                      Icons.privacy_tip,
                      color: Colors.white,
                    ),
                  ],
                ),
              ),
              TextButton(
                onPressed: () {
                  Scaffold.of(context).closeDrawer();
                },
                child: const Row(
                  children: [
                    Text(
                      'Impressum',
                      style: TextStyle(fontSize: 20),
                    ),
                    Spacer(),
                    Icon(
                      Icons.apartment,
                      color: Colors.white,
                    ),
                  ],
                ),
              ),
              if (widget.client.session.accessToken != null)
                TextButton(
                  onPressed: () {
                    widget.client.session.accessToken = null;
                    widget.client.session
                        .removeSession(widget.client.session.sessionId!);

                    Navigator.of(context).pushAndRemoveUntil(
                        MaterialPageRoute(
                          builder: (context) =>
                              StartPage(client: widget.client),
                        ),
                        (route) => false);
                  },
                  child: const Row(
                    children: [
                      Text(
                        'Log out',
                        style: TextStyle(fontSize: 20),
                      ),
                      Spacer(),
                      Icon(
                        Icons.logout,
                        color: Colors.white,
                      ),
                    ],
                  ),
                ),
              const SizedBox(
                height: 250,
              )
            ],
          );
        }),
        bottomNavigationBar: Builder(
          builder: (context) {
            return BottomBar(
              children: widget.client.session.accessToken != null
                  ? [
                      BottomNavigationBarItem(
                        backgroundColor: Colors.white,
                        label: 'Personen',
                        icon: Column(
                          children: [
                            IconButton(
                              onPressed: () =>
                                  Scaffold.of(context).openDrawer(),
                              icon: const Icon(
                                Icons.group,
                                color: Colors.white,
                              ),
                            ),
                            const Text(
                              'Personen',
                              style: TextStyle(
                                color: Colors.white,
                                fontSize: 16,
                              ),
                            )
                          ],
                        ),
                      ),
                      BottomNavigationBarItem(
                        backgroundColor: Colors.white,
                        label: 'Home',
                        icon: Column(
                          children: [
                            IconButton(
                              onPressed: () {
                                Navigator.of(context).push(
                                  MaterialPageRoute(
                                    builder: (context) => StartPage(
                                      client: widget.client,
                                    ),
                                  ),
                                );
                              },
                              icon: const Icon(
                                Icons.home,
                                color: Colors.white,
                              ),
                            ),
                            const Text(
                              'Home',
                              style: TextStyle(
                                color: Colors.white,
                                fontSize: 16,
                              ),
                            )
                          ],
                        ),
                      ),
                      BottomNavigationBarItem(
                        backgroundColor: Colors.white,
                        label: 'Menu',
                        icon: IconButton(
                          onPressed: () {
                            Scaffold.of(context).openDrawer();
                          },
                          icon: const Icon(
                            Icons.menu,
                            color: Colors.white,
                          ),
                        ),
                      )
                    ]
                  : [
                      BottomNavigationBarItem(
                        label: 'back',
                        backgroundColor: Colors.white,
                        icon: IconButton(
                          onPressed: () {},
                          icon: const Icon(
                            Icons.arrow_back,
                            color: Colors.white,
                          ),
                        ),
                      ),
                      BottomNavigationBarItem(
                        backgroundColor: Colors.white,
                        label: 'Menu',
                        icon: IconButton(
                          onPressed: () => Scaffold.of(context).openDrawer(),
                          icon: const Icon(
                            Icons.menu,
                            color: Colors.white,
                          ),
                        ),
                      ),
                    ],
            );
          },
        ),
        body: !_loading
            ? Background(
                child: Center(
                  child: Column(
                    children: [
                      const SizedBox(
                        height: 48,
                      ),
                      Text(
                        'Willkommen ${accountInfo.firstname} ${accountInfo.lastname}!',
                        style: const TextStyle(
                          fontSize: 24,
                        ),
                      ),
                    ],
                  ),
                ),
              )
            : const LoadingWidget(),
      ),
    );
  }
}