import 'package:colorize_logger/colorize_logger.dart';
import 'package:flutter/material.dart';
import 'package:get_it/get_it.dart';
import 'package:ustest/Services/Profile.dart';
import 'package:ustest/Services/UserService.dart';

class MyView extends StatelessWidget {
  const MyView();

  @override
  Widget build(BuildContext context) {
    print("build Myview");
    GlobalKey myViewKey = GlobalKey();
    return Scaffold(
      body: Center(
          child: FutureBuilder<Profile?>(
        key: myViewKey,
        future: loadUserData(),
        builder: (context, snapshot) {
          if (snapshot.hasError) {
            return const Center(
              child: Text('An error has occurred!'),
            );
          } else if (snapshot.hasData) {
            var user = snapshot.data!;
            if (UserService.DefaultNotLoginId == user.id) {
              return Column(
                children: [
                  CircleAvatar(
                    backgroundColor: Colors.greenAccent[400],
                    radius: 40,
                    child: Text(
                      'GeeksForGeeks',
                      style: TextStyle(fontSize: 25, color: Colors.white),
                    ), //Text
                  ),
                  TextButton(
                      child: const Text("Sign in"),
                      onPressed: () => _showSignInScreen(context))
                ],
              );
            } else {
              return Column(
                children: [
                  Row(
                    children: [
                      CircleAvatar(
                        backgroundColor: Colors.greenAccent[400],
                        radius: 40,
                        child: Text(
                          'GeeksForGeeks',
                          style: TextStyle(fontSize: 25, color: Colors.white),
                        ), //Text
                      ),
                      Column(
                        children: [Text(user.userName)],
                      )
                    ],
                  ),
                  Row(
                    children: [
                      Text('Name:${user.userName}, Token:${user.accessToken}'),
                      TextButton.icon(
                          onPressed: () => onLogout(context),
                          icon: Icon(Icons.logout),
                          label: Text("注銷"))
                    ],
                  )
                ],
              );
            }
          } else {
            return const Center(
              child: CircularProgressIndicator(),
            );
          }
        },
      )),
    );
  }

  Future<Profile?> loadUserData() async {
    try {
      var service = GetIt.instance.get<UserService>();
      var profile = await service.getCurrentUser();
      return profile;
    } catch (ex) {
      Logger.warning('loadUserData ex:$ex');
      return null;
    }
  }

  void _showSignInScreen(BuildContext context) {
    Future.delayed(Duration.zero, () {
      Navigator.of(context).pushNamed('/signin');
    });
  }

  void onLogout(context) {
    var service = GetIt.instance.get<UserService>();
    service.logout();
    Navigator.of(context).pushNamed('/signin');
  }
}