grepfood-demo/client/lib/main.dart

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

void main() {
  runApp(const MyApp());
}

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

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(useMaterial3: true),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class Recipe {
  String name;
  String icon;

  Recipe(this.name, this.icon);

  factory Recipe.fromMap(Map<String, dynamic> json) {
    return Recipe(json['Name'], json['Icon']);
  }
  factory Recipe.fromJson(Map<String, dynamic> json) {
    return Recipe(json['Name'], json['Icon']);
  }
}

Future<List<Recipe>> fetchRecipes() async {
  final response = await http.get(
      Uri(scheme: "http", host: "localhost", port: 8080, path: "api/recipes"));

  if (response.statusCode == 200) {
    final parsed = json.decode(response.body).cast<Map<String, dynamic>>();
    return parsed.map<Recipe>((json) => Recipe.fromMap(json)).toList();
  } else {
    throw Exception("Failed to fetch recipes");
  }
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Container(
        child: Column(children: [
      Padding(
          padding: EdgeInsetsDirectional.all(16.0),
          child: Image(image: AssetImage("assets/banner.png"))),
      Text(textAlign: TextAlign.start, "Einkaufsliste"),
      FutureBuilder<List<Recipe>>(
          future: fetchRecipes(),
          builder: (context, snapshot) {
            if (snapshot.hasError) print(snapshot.error);

            if (snapshot.hasData) {
              List<TableRow> rows = List.empty(growable: true);

              for (Recipe recipe in snapshot.data!) {
                var image = Image.network(fit: BoxFit.fitHeight,
                    height: 32.0,
                    "http://localhost:8080/api/image/${recipe.icon}");
                rows.add(TableRow(children: [TableCell(child: image), TableCell(child: Text(recipe.name))]));
              }

              return Table(children: rows);
            } else {
              return Center(child: CircularProgressIndicator());
            }
          })
    ]));
  }
}