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

import 'package:app/gapi/client.dart';
import 'package:app/pages/dashboard_page.dart';
import 'package:app/pb/rpc_login.pb.dart';
import 'package:flutter/material.dart';

class LoginPage extends StatefulWidget {
  const LoginPage({super.key});

  @override
  State<LoginPage> createState() => _LoginPageState();
}

class _LoginPageState extends State<LoginPage> {
  bool _loading = false;

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

  final Client client = Client();

  final _formKey = GlobalKey<FormState>();
  final mailController = TextEditingController();
  final passwordController = TextEditingController();

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

  // Future<String> _login(
  //     {required BuildContext context,
  //     required String email,
  //     required String password,
  //     required Function onSuccess,
  //     required Function onError}) async {
  //   LoginResponse r = await client.login(
  //     LoginRequest(
  //       email: email,
  //       password: password,
  //     ),
  //     onError: onError,
  //     onSuccess: onSuccess,
  //   );
  //   return r.accessToken;
  // }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        automaticallyImplyLeading: false,
        backgroundColor: Colors.black,
        flexibleSpace: Image.asset(
          'lib/assets/logo_300x200.png',
          height: 80,
        ),
        // actions: [
        //   IconButton(
        //     onPressed: () {},
        //     icon: const Icon(Icons.menu),
        //     tooltip: 'Menu',
        //   ),
        // IconButton(
        //   onPressed: () {},
        //   icon: const Icon(Icons.login_sharp),
        //   tooltip: 'Login',
        // ),
        // ],
      ),
      body: !_loading
          ? Form(
              key: _formKey,
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                  TextFormField(
                    style: TextStyle(
                      color: Theme.of(context).colorScheme.primary,
                    ),
                    controller: mailController,
                    decoration: const InputDecoration(
                      fillColor: Color.fromARGB(30, 255, 255, 255),
                      filled: true,
                      hintStyle: TextStyle(
                        color: Colors.white38,
                      ),
                      hintText: 'E-Mail Adresse',
                    ),
                    keyboardType: TextInputType.emailAddress,
                    validator: (value) {
                      if (value == null || value.isEmpty) {
                        return 'Bitte eine gültige E-Mail Adresse eingeben';
                      }
                      return null;
                    },
                  ),
                  TextFormField(
                    style: const TextStyle(
                      color: Colors.white,
                    ),
                    controller: passwordController,
                    decoration: const InputDecoration(
                      fillColor: Color.fromARGB(30, 255, 255, 255),
                      filled: true,
                      hintStyle: TextStyle(
                        color: Colors.white38,
                      ),
                      hintText: 'Passwort',
                    ),
                    keyboardType: TextInputType.visiblePassword,
                    obscureText: true,
                    validator: (value) {
                      if (value == null || value.isEmpty) {
                        return 'Bitte geben Sie Ihr Passwort ein';
                      }
                      return null;
                    },
                  ),
                  ElevatedButton(
                      onPressed: () {
                        if (_formKey.currentState!.validate()) {
                          // final navigator = Navigator.of(context);
                          _setLoading(true);
                          client
                              .login(
                            email: mailController.text,
                            password: passwordController.text,
                            onError: () {
                              _setLoading(false);
                              ScaffoldMessenger.of(context)
                                  .showSnackBar(const SnackBar(
                                content: Text('Login fehlgeschlagen'),
                              ));
                            },
                            onSuccess: () {
                              // _setLoading(false);
                              ScaffoldMessenger.of(context)
                                  .showSnackBar(const SnackBar(
                                content: Text('Login erfolgreich'),
                              ));
                            },
                          )
                              .then(
                            (r) {
                              if (r.accessToken != '') {
                                Navigator.pushAndRemoveUntil(
                                    context,
                                    MaterialPageRoute(
                                      builder: (ctx) => DashboardPage(
                                        client: client,
                                      ),
                                    ),
                                    (route) => false);
                              }
                              // _setLoading(false);
                            },
                          );
                        }
                      },
                      child: const Icon(Icons.arrow_forward))
                ],
              ),
            )
          : Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Image.asset(
                  'lib/assets/logo_300x200.png',
                  height: 300,
                ),
              ],
            ),
    );
  }
}