From 84e1f6325fcf86b126cf54db8d4ce403b424783c Mon Sep 17 00:00:00 2001
From: allllen4a <zhrnvalena@yandex.ru>
Date: Thu, 19 Sep 2024 15:11:28 +0300
Subject: [PATCH] lab2

---
 lib/main.dart | 145 +++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 107 insertions(+), 38 deletions(-)

diff --git a/lib/main.dart b/lib/main.dart
index ea3d0ee..5f06a4b 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,71 +1,140 @@
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(const MyApp());
+  runApp(MyApp());
 }
 
 class MyApp extends StatelessWidget {
-  const MyApp({super.key});
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
+      title: 'Рецепты',
       theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-        useMaterial3: true,
+        scaffoldBackgroundColor: Colors.purple[100],
       ),
-      home: const MyHomePage(title: 'Жирнова Алена Евгениевна'),
+      home: RecipeHome(),
     );
   }
 }
 
-class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
+enum Cuisine { Italian, Indian, Chinese, Georgian }
 
-  final String title;
+class Recipe {
+  String name;
+  Cuisine cuisine;
+  List<String> ingredients;
 
-  @override
-  State<MyHomePage> createState() => _MyHomePageState();
+  Recipe({required this.name, required this.cuisine, required this.ingredients});
+
+  String getDetails() {
+    return 'Рецепт: $name\nКухня: ${cuisine.toString().split('.').last}\nИнгредиенты: ${ingredients.join(', ')}';
+  }
 }
 
-class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+class RecipeManager<T extends Recipe> {
+  List<T> _recipes = [];
 
-  void _incrementCounter() {
-    setState(() {
-      _counter++;
-    });
+  Future<void> addRecipe(T recipe) async {
+    await Future.delayed(Duration(seconds: 1)); // Имитация асинхронной операции
+    _recipes.add(recipe);
+  }
+
+  List<T> getAllRecipes() => _recipes;
+
+  T? getRecipeAt(int index) {
+    if (index < _recipes.length) {
+      return _recipes[index];
+    }
+    return null; // Вернём null, если индекс вне диапазона
+  }
+}
+
+extension RecipeListExtension<T extends Recipe> on List<T> {
+  void printAllRecipes() {
+    for (var recipe in this) {
+      print(recipe.getDetails());
+    }
+  }
+}
+
+class RecipeHome extends StatefulWidget {
+  @override
+  _RecipeHomeState createState() => _RecipeHomeState();
+}
+
+class _RecipeHomeState extends State<RecipeHome> {
+  final RecipeManager<Recipe> _recipeManager = RecipeManager();
+  final TextEditingController _nameController = TextEditingController();
+  final TextEditingController _ingredientsController = TextEditingController();
+  Cuisine? _selectedCuisine;
+
+  void _addRecipe() {
+    final name = _nameController.text;
+    final ingredients = _ingredientsController.text.split(',').map((s) => s.trim()).toList();
+
+    if (name.isNotEmpty && ingredients.isNotEmpty && _selectedCuisine != null) {
+      final recipe = Recipe(name: name, cuisine: _selectedCuisine!, ingredients: ingredients);
+      _recipeManager.addRecipe(recipe).then((_) {
+        _nameController.clear();
+        _ingredientsController.clear();
+        _selectedCuisine = null;
+        setState(() {}); // Обновляем интерфейс
+      });
+    }
   }
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(
-        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        title: Text(widget.title),
-      ),
-      body: Center(
-
+      appBar: AppBar(title: Text('Создание Рецептов')),
+      body: Padding(
+        padding: const EdgeInsets.all(16.0),
         child: Column(
-
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
+          children: [
+            TextField(
+              controller: _nameController,
+              decoration: InputDecoration(labelText: 'Название рецепта'),
             ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headlineMedium,
+            DropdownButton<Cuisine>(
+              hint: Text('Выберите кухню'),
+              value: _selectedCuisine,
+              onChanged: (Cuisine? newValue) {
+                setState(() {
+                  _selectedCuisine = newValue;
+                });
+              },
+              items: Cuisine.values.map((Cuisine cuisine) {
+                return DropdownMenuItem<Cuisine>(
+                  value: cuisine,
+                  child: Text(cuisine.toString().split('.').last),
+                );
+              }).toList(),
+            ),
+            TextField(
+              controller: _ingredientsController,
+              decoration: InputDecoration(labelText: 'Ингредиенты (через запятую)'),
+            ),
+            SizedBox(height: 20),
+            ElevatedButton(
+              onPressed: _addRecipe,
+              child: Text('Добавить Рецепт'),
+            ),
+            SizedBox(height: 20),
+            Expanded(
+              child: ListView.builder(
+                itemCount: _recipeManager.getAllRecipes().length,
+                itemBuilder: (context, index) {
+                  final recipe = _recipeManager.getRecipeAt(index);
+                  return ListTile(
+                    title: Text(recipe?.name ?? 'Имеется ошибка'),
+                    subtitle: Text(recipe?.getDetails() ?? ''),
+                  );
+                },
+              ),
             ),
           ],
         ),
       ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ),
     );
   }
-
-}
+}
\ No newline at end of file