// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import 'package:flutter/material.dart';
import 'package:github/github.dart';

import 'github_oauth_credentials.dart';
import 'src/github_login.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'GitHub Client',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: const MyHomePage(title: 'GitHub Client'),
    );
  }
}

class MyHomePage extends StatelessWidget {
  const MyHomePage({super.key, required this.title});
  final String title;

  @override
  Widget build(BuildContext context) {
    return GithubLoginWidget(
      builder: (context, httpClient) {
        return FutureBuilder<CurrentUser>(
          future: viewerDetail(httpClient.credentials.accessToken),
          builder: (context, snapshot) {
            return Scaffold(
              appBar: AppBar(title: Text(title), elevation: 2),
              body: Center(
                child: Text(
                  snapshot.hasData
                      ? 'Hello ${snapshot.data!.login}!'
                      : 'Retrieving viewer login details...',
                ),
              ),
            );
          },
        );
      },
      githubClientId: githubClientId,
      githubClientSecret: githubClientSecret,
      githubScopes: githubScopes,
    );
  }
}

Future<CurrentUser> viewerDetail(String accessToken) async {
  final gitHub = GitHub(auth: Authentication.withToken(accessToken));
  return gitHub.users.getCurrentUser();
}