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1 files changed, 220 insertions, 0 deletions

diff --git a/main.dart b/main.dart
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+++ b/main.dart
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+import 'package:flutter/material.dart';
+import 'dart:io';
+import 'package:http/http.dart' as http;
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter Demo',
+      theme: ThemeData(
+        brightness: Brightness.dark,
+        primaryColor: Colors.white,
+      ),
+      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+    );
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  const MyHomePage({super.key, required this.title});
+
+  final String title;
+
+  @override
+  State<MyHomePage> createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  final TextEditingController _todoController = TextEditingController();
+  final TextEditingController _usernameController = TextEditingController();
+  final List<String> _values = <String>['first todo', 'second work'];
+  final List<bool> _dones = <bool>[true, false];
+  var _username = "test";
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+        appBar: AppBar(
+          title: Text("Text App"),
+          backgroundColor: Color(0xff2d3f76),
+        ),
+        body: Center(
+            child: Container(
+                padding: EdgeInsets.all(16.0),
+                child: Column(children: _showTodos()))),
+        floatingActionButton: FloatingActionButton(
+          onPressed: () {
+            setState(() {
+              if (_todoController.text.isNotEmpty) {
+                _values.add(_todoController.text);
+                _dones.add(false);
+                _todoController.clear();
+              }
+            });
+          },
+          tooltip: 'Add Todo',
+          child: const Icon(Icons.add),
+        ),
+        bottomNavigationBar: BottomNavigationBar(
+          items: [
+            BottomNavigationBarItem(
+                icon: IconButton(
+                    onPressed: () => _showDialog(), icon: Icon(Icons.login)),
+                label: "Login"),
+            BottomNavigationBarItem(
+                icon: IconButton(
+                    onPressed: () => _saveTodos(), icon: Icon(Icons.save)),
+                label: "Save"),
+          ],
+          backgroundColor: Color(0xff222436),
+        ));
+  }
+
+  List<Widget> _showTodos() {
+    List<Widget> todos = [];
+    for (int i = 0; i < _values.length; i++) {
+      String context = _values[i];
+      todos.add(Row(children: <Widget>[
+        Checkbox(
+            value: _dones[i],
+            onChanged: (bool? value) {
+              setState(() {
+                _dones[i] = value!;
+              });
+            }),
+        SizedBox(width: 10),
+        Text(context),
+        Spacer(),
+        IconButton(
+          onPressed: () {
+            setState(() {
+              int i = _values.indexOf(context);
+              _values.remove(context);
+              _dones.removeAt(i);
+            });
+          },
+          icon: Icon(
+            Icons.delete,
+            color: Colors.red,
+          ),
+        ),
+      ]));
+    }
+    if (_values.isEmpty) {
+      todos.add(Text('Nothing here'));
+    }
+    todos.add(SizedBox(height: 10));
+    todos.add(TextField(
+      controller: _todoController,
+      decoration: const InputDecoration(
+        border: OutlineInputBorder(),
+        labelText: 'Insert Todo',
+      ),
+    ));
+    return todos;
+  }
+
+  Future<void> _showDialog() async {
+    return showDialog<void>(
+        context: context,
+        builder: (BuildContext context) {
+          return AlertDialog(
+            title: const Text('Login'),
+            content: TextField(
+              controller: _usernameController,
+              decoration: const InputDecoration(hintText: 'Username'),
+              autofocus: true,
+            ),
+            actions: <Widget>[
+              OutlinedButton(
+                style: OutlinedButton.styleFrom(
+                  shape: RoundedRectangleBorder(
+                    borderRadius: BorderRadius.circular(12),
+                  ),
+                ),
+                onPressed: () {
+                  Navigator.of(context).pop();
+                },
+                child: const Text('Cancel'),
+              ),
+              ElevatedButton(
+                style: ElevatedButton.styleFrom(
+                  shape: RoundedRectangleBorder(
+                    borderRadius: BorderRadius.circular(12),
+                  ),
+                ),
+                onPressed: () {
+                  Navigator.of(context).pop();
+                  _username = _usernameController.text;
+                  _values.clear();
+                  _dones.clear();
+                  _loadTodos();
+                  _usernameController.clear();
+                },
+                child: const Text('Login'),
+              ),
+            ],
+          );
+        });
+  }
+
+  void _loadTodos() async {
+    String uri = "http://127.0.0.1:6969/$_username.txt";
+    try {
+      http.Response response = await http.get(Uri.parse(uri));
+      if (response.statusCode == 200) {
+        print("Successfully got the data");
+      } else {
+        print('Error getting data: ${response.statusCode}');
+        return;
+      }
+
+      setState(() {
+        todoDecode(response.body, _values, _dones);
+      });
+      print(_values);
+      print(_dones);
+    } on SocketException catch (e) {
+      print(e.message);
+    }
+  }
+
+  void _saveTodos() async {
+    String uri = "http://127.0.0.1:6969/$_username.txt";
+    var data = todoEncode(_values, _dones);
+    print(data);
+    try {
+      http.Response response = await http.post(Uri.parse(uri), body: data);
+      if (response.statusCode == 200) {
+        print('Data sent successfully');
+      } else {
+        print('Error sending data: ${response.statusCode}');
+      }
+    } catch (e) {
+      print(e.toString());
+    }
+  }
+}
+
+String todoEncode(List<String> values, List<bool> dones) {
+  String data = "";
+  for (int i = 0; i < values.length; i++) {
+    data += '${dones[i] ? 1 : 0}:${values[i]}\n';
+  }
+  return data;
+}
+
+void todoDecode(String todos, List<String> values, List<bool> dones) {
+  var tmp = todos.split('\n');
+  for (int i = 0; i < tmp.length - 1; i++) {
+    values.add(tmp[i].substring(2));
+    dones.add(tmp[i][0] == '0' ? false : true);
+  }
+}