import 'package:flutter/material.dart';

import 'package:go_router/go_router.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';

import '../../common/constants.dart';
import '../../components/common_widgets.dart' show CommonElevatedButton;
import '../../database/hive_database.dart';
import '../../models/init_get_it.dart';
import '../../models/token_model.dart';
import '../../models/user_model.dart';
import '../../request/signup_signin.dart';

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

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

class _WelcomeScreenState extends State<WelcomeScreen> {
  Future<int> _tryLoginUseToken() async {
    await getIt.get<Token>().init();
    if (getIt.get<Token>().token.isNotEmpty) {
      try {
        Map<String, dynamic> res = await signinByToken();
        if (res['code'] == 10200) {
          await getIt.get<Token>().updateToken(res['token']);
          getIt.get<UserAccount>().init(res['data']);
          await HiveDatabase.init();
          return 10200;
        } else {
          getIt.get<Token>().clear();
          return 9999;
        }
      } catch (e) {
        return 500;
      }
    } else {
      return 200;
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: FutureBuilder<int>(
            future: _tryLoginUseToken(),
            builder: (BuildContext context, AsyncSnapshot<int> snapshot) {
              if (snapshot.hasData) {
                int? data = snapshot.data;
                if (data == 10200) {
                  EasyLoading.showSuccess(
                    '登录成功!',
                    duration: const Duration(milliseconds: 500),
                  );
                  context.pushNamed('Chat');
                } else if (data == 9999) {
                  EasyLoading.showInfo(
                    '登录状态已过期，请重新登录!',
                    duration: const Duration(milliseconds: 500),
                  );
                } else if (data == 500) {
                  EasyLoading.showError(
                    '连接服务器失败，请稍后再试!',
                    duration: const Duration(milliseconds: 500),
                  );
                } else {
                  EasyLoading.dismiss();
                }
              } else {
                EasyLoading.show(status: '自动登录中...');
              }
              return Column(
                children: [
                  const SizedBox(
                    height: kDefaultPadding,
                  ),
                  Image.asset('assets/images/welcome_image.png'),
                  CommonElevatedButton(
                    onPressed: () => context.push('/signin'),
                    text: '登录',
                  ),
                  CommonElevatedButton(
                    onPressed: () => context.push('/signup'),
                    text: '注册',
                    color: kSecondaryColor,
                  ),
                ],
              );
            }),
      ),
    );
  }
}