get random users from api and save to firebase authentication and firestore

get_random_users_and_save_to_firebase_authentication_and_firestore.dart

import 'dart:convert';

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:whisperp/consts/index.dart';
import 'package:whisperp/messaging_ui/constants.dart';
import 'package:http/http.dart' as http;

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

  @override
  State<WelcomeScreen> createState() => _WelcomeScreenState();
}

class _WelcomeScreenState extends State<WelcomeScreen> {
  int _kaydedilenKullaniciSayisi = 0;
  String _kaydedilenKullaniciIsimSoyisim = "";

  Future<void> _kullanicilariGetir() async {
    final response = await http.get(
      Uri.parse('https://randomuser.me/api/?results=200&nat=tr'),
    );

    if (response.statusCode == 200) {
      final resMap = jsonDecode(response.body);

      for (final userMap in (resMap['results'] as List).cast<Map>()) {
        String displayName =
            "${userMap['name']['first']} ${userMap['name']['last']}";

        String email = userMap['email'];

        String photoURL = userMap['picture']['large'];

        final userCredential =
            await FirebaseAuth.instance.createUserWithEmailAndPassword(
          email: email,
          password: email.split('@').first,
        );

        if (userCredential.user != null) {
          await userCredential.user!.updateDisplayName(displayName);
          await userCredential.user!.updatePhotoURL(photoURL);

          await FirebaseFirestore.instance
              .collection('users')
              .doc(userCredential.user!.uid)
              .set({
            'displayName': displayName,
            'email': email,
            'emailVerified': false,
            'photoURL': photoURL,
            'registerationTime': FieldValue.serverTimestamp(),
          });
          await Future.delayed(const Duration(seconds: 1));

          _kaydedilenKullaniciSayisi++;
          _kaydedilenKullaniciIsimSoyisim = displayName;

          debugPrint(
              "$_kaydedilenKullaniciSayisi: _kaydedilenKullaniciIsimSoyisim");

          await FirebaseAuth.instance.signOut();
          setState(() {});
        }
      }
    }
  }

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: Column(
          children: [
            const Spacer(flex: 2),
            Image.asset(AssetsPath.welcomeImage),
            const Spacer(flex: 3),
            Text(
              "$_kaydedilenKullaniciSayisi\n$_kaydedilenKullaniciIsimSoyisim",
              textAlign: TextAlign.center,
              style: Theme.of(context)
                  .textTheme
                  .headline5!
                  .copyWith(fontWeight: FontWeight.bold),
            ),
            Text(
              "Welcome to our freedom \nmessaging app",
              textAlign: TextAlign.center,
              style: Theme.of(context)
                  .textTheme
                  .headline5!
                  .copyWith(fontWeight: FontWeight.bold),
            ),
            const Spacer(),
            Text(
              "Freedom talk any person of your \nmother language.",
              textAlign: TextAlign.center,
              style: TextStyle(
                color: Theme.of(context)
                    .textTheme
                    .bodyText1!
                    .color!
                    .withOpacity(0.64),
              ),
            ),
            const Spacer(flex: 3),
            FittedBox(
              child: TextButton(
                onPressed: () {
                  _kullanicilariGetir();
                  /*  Hive.box(BoxNames.settings).put('is-skipped', true);

                  Navigator.pushNamed(
                    context,
                    RouteNames.signInOrSignUpScreen,
                  ); */
                },
                child: Row(
                  children: [
                    Text(
                      "Skip",
                      style: Theme.of(context).textTheme.bodyText1!.copyWith(
                            color: Theme.of(context)
                                .textTheme
                                .bodyText1!
                                .color!
                                .withOpacity(0.8),
                          ),
                    ),
                    const SizedBox(width: kDefaultPadding / 4),
                    Icon(
                      Icons.arrow_forward_ios,
                      size: 16,
                      color: Theme.of(context)
                          .textTheme
                          .bodyText1!
                          .color!
                          .withOpacity(0.8),
                    )
                  ],
                ),
              ),
            )
          ],
        ),
      ),
    );
  }
}