import 'dart:convert';

import 'package:get/get.dart';
import 'package:ferry/ferry.dart';
import 'package:hive/hive.dart';
import 'package:myapp/app/routes/app_pages.dart';
import 'package:myapp/graphql/TokenAuthAPI.req.gql.dart';
import 'package:get_it/get_it.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
class LoginController extends GetxController {
  //TODO: Implement LoginController
  final authState="".obs();
  @override
  void onInit() {
    super.onInit();
  }

  @override
  void onReady() {
    super.onReady();
  }

  @override
  void onClose() {}


  void signInWithEmailAndPassword(String email, String password) {

    final client= GetIt.instance<Client>(instanceName: 'authClient');
    final loginReq = GTokenAuthAPIReq(
            (b) => b
          ..vars.email = email.toLowerCase()
          ..vars.password = password

    );
  //   final registerReq = GRegisterReq(
  //           (b) => b
  //             ..fetchPolicy = FetchPolicy.NetworkOnly
  //         ..vars.r_email = "sumitisagodboy@gmail.com"
  //         ..vars.r_password1 = "Sks1234@ak"
  //             ..vars.r_password2 = "Sks1234@ak"
  //             ..vars.r_username="Saran",
  //   );
    client.request(loginReq).listen((response) async {if(response.hasErrors) {
      throw AuthenticationException(message: 'Wrong username or password');
    } else if (response.data!.tokenAuth!.success==true){
      var token = response.data!.tokenAuth!.token;
      print(["token is", response.data!.tokenAuth!.token]);
      var e= saveUserToken(token!);
      // final authBox = await Hive.openBox("auth");
      // authBox.put('token', token);
      Get.toNamed(Routes.HOME,arguments:[token,e]);
      authState("Authenticated");
    }
    else{
      throw AuthenticationException(message: 'Wrong username or password');
    }
    });
   }
  Future<void> saveUserToken(String token) async {
    try {
      final FlutterSecureStorage secureStorage = const FlutterSecureStorage();
      var containsEncryptionKey = await secureStorage.containsKey(key: 'key');
      if (!containsEncryptionKey) {
        var key = Hive.generateSecureKey();
        await secureStorage.write(key: 'key', value: base64UrlEncode(key));
      }
      var encryptionKey = base64Url.decode((await secureStorage.read(key: 'key'))!);
      print('Encryption key: $encryptionKey');
      var encryptedBox = await Hive.openBox('auth', encryptionCipher: HiveAesCipher(encryptionKey));
      await encryptedBox.put('token', token);
      print(encryptedBox.get('token'));
    } on Exception catch (e) {
      throw Exception( e.toString());
    }
  }

  void signOut() {
  }
}

class AuthenticationException implements Exception {
  final String message;
  AuthenticationException({this.message = 'Unknown error occurred. '});
}