Set up Amplify GraphQL API

amplify add api

? Please select from one of the below mentioned services:
    `GraphQL`
# The part below will show you some options you can change, if you wish to change any of them you can navigate with
# your arrow keys and update any field, otherwise you can click on `Continue` to move on
? Here is the GraphQL API that we will create. Select a setting to edit or continue
    `Continue`
? Choose a schema template:
    `Single object with fields (e.g., “Todo” with ID, name, description)`
? Do you want to edit the schema now?
    `No`

type Todo @model {
  id: ID!
  name: String!
  description: String
}

amplify push

amplify codegen models

dependencies:
  flutter:
    sdk: flutter
  amplify_flutter: ^2.0.0
  amplify_api: ^2.0.0

import 'package:amplify_api/amplify_api.dart';
import 'package:amplify_flutter/amplify_flutter.dart';
import 'package:flutter/material.dart';

import 'amplifyconfiguration.dart';
import 'models/ModelProvider.dart';

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
    _configureAmplify();
  }

  Future<void> _configureAmplify() async {
    final api = AmplifyAPI(
      options: APIPluginOptions(modelProvider: ModelProvider.instance),
    );
    await Amplify.addPlugin(api);

    try {
      await Amplify.configure(amplifyconfig);
    } on Exception catch (e) {
      safePrint('An error occurred configuring Amplify: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Scaffold(
        body: Center(
          child: Text('Home'),
        ),
      ),
    );
  }
}

Future<void> createTodo() async {
  try {
    final todo = Todo(name: 'my first todo', description: 'todo description');
    final request = ModelMutations.create(todo);
    final response = await Amplify.API.mutate(request: request).response;

    final createdTodo = response.data;
    if (createdTodo == null) {
      safePrint('errors: ${response.errors}');
      return;
    }
    safePrint('Mutation result: ${createdTodo.name}');
  } on ApiException catch (e) {
    safePrint('Mutation failed: $e');
  }
}