template for a github social login

main.dart

import 'package:flutter/material.dart';
import 'package:appwrite/appwrite.dart';
import 'package:flutter/services.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:webappgit/app_constants.dart';


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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.grey,
      ),
      initialRoute: '/',
      routes: {
        '/': (context) => const MyLoginPage(title: 'Login'),
        '/home': (context) => const MyHomePage(title: 'Home'),
      },
      // home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}


class MyLoginPage extends StatefulWidget {
  const MyLoginPage({Key? key, required this.title}) : super(key: key);
  final String title;
  @override
  State<MyLoginPage> createState() => _MyLoginPageState();
}

class _MyLoginPageState extends State<MyLoginPage> {
  // functionality
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: _buildBody(),
    );
  }
  
  Widget _buildBody() {
    return Center(
      child: _buildStack(),
    );
  }
  
  Widget _buildStack() {
    return Stack(
      alignment: Alignment.center,
      children: [
        _buildIntrinsicHeightContainer(),
      ],
    );
  }
  
  Widget _buildIntrinsicHeightContainer() {
    return IntrinsicHeight(
      child: _buildContainer(),
    );
  }
  
  Widget _buildContainer() {
    return Container(
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.grey[600],
        borderRadius: BorderRadius.circular(40),
        boxShadow: [
          BoxShadow(
            blurRadius: 20,
            offset: const Offset(0, 10),
            color: Colors.black.withOpacity(.12),
          )
        ],
      ),
      child: _buildColumn(),
    );
  }
  
  Widget _buildColumn() {
    return Column(
      children: [
        _buildIconContainer(),
        _buildSizedBox(),
        _buildSignInButton(),
      ],
    );
  }
  
  Widget _buildIconContainer() {
    return Container(
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(40),
        boxShadow: [
          BoxShadow(
            blurRadius: 10,
            offset: const Offset(0, 10),
            color: Colors.black.withOpacity(.12),
          )
        ],
      ),
      child: const Icon(
        FontAwesomeIcons.github,
        size: 300,
        color: Colors.black,
      ),
    );
  }
  
  Widget _buildSizedBox() {
    return const SizedBox(
      height: 20,
    );
  }
  
  Widget _buildSignInButton() {
    return ElevatedButton(
      onPressed: _githubLogin,
      style: ButtonStyle(
        backgroundColor:
            MaterialStateProperty.resolveWith((states) => Colors.black),
        minimumSize:
            MaterialStateProperty.resolveWith((states) => const Size(88, 36)),
        shape: MaterialStateProperty.resolveWith((states) =>
            RoundedRectangleBorder(borderRadius: BorderRadius.circular(8))),
      ),
      child: const Text("Sign in with Github",
          style: TextStyle(color: Colors.white)),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});
  final String title;
  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
    );
  }
}