Flutter Client olacak şekilde Python'dan server yazma

//import 'dart:developer'; enes yavuz bi tane program kullanıodu c için ona sor.
//import 'dart:io';
//import 'package:dart_eval/dart_eval.dart';
import 'dart:convert';
import 'dart:developer';
import 'package:awesome_dialog/awesome_dialog.dart';
import 'package:flutter/material.dart';
import 'package:web_socket_channel/status.dart' as status;
import 'package:web_socket_channel/web_socket_channel.dart';

String HOST = 'localhost';
int PORT = 4609;

void main() async {
 // Dart client.
 runApp(
 const MaterialApp(
 home: MainPage(),
 ),
 );
}
//class Connection(){

//}

bool logedIn = false;
String username = 'null';
String passWord = 'null';

int _x = 0;
int _bakiye = 0;
int _indexCurrent = 0;
String inputUsername = 'null';
String inputPassWord = 'null';
String appBarTopicYemek = 'Restorantlar';

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

 @override
 State<LogInPage> createState() => _LogInPageState();
}

//giriş yapma sayfası.

class _LogInPageState extends State<LogInPage> {
 final _textControllerPassword = TextEditingController();
 final _textControllerUsername = TextEditingController();
 @override
 Widget build(BuildContext context) {
 return MaterialApp(
 home: Scaffold(
 appBar: AppBar(
 leading: BackButton(
 onPressed: () {
 Navigator.push(context,
 MaterialPageRoute(builder: (context) => const MainPage()));
 },
 ),
 centerTitle: true,
 title: const Text('Giriş Yap'),
 backgroundColor: const Color.fromARGB(255, 77, 222, 255),
 ),
 body: Center(
 child: SizedBox(
 width: 300,
 height: double.infinity,
 child: Column(
 mainAxisAlignment: MainAxisAlignment.start,
 children: [
 const Text('\n\n\n\n'),
 SizedBox(
 width: 300,
 child: TextField(
 controller: _textControllerUsername,
 decoration: InputDecoration(
 hintText: 'Kullanıcı Adı',
 border: const OutlineInputBorder(),
 suffixIcon: IconButton(
 onPressed: () {
 _textControllerUsername.clear();
 },
 icon: const Icon(Icons.clear),
 ),
 ),
 maxLength: 16,
 ),
 ),
 const Text('\n', style: TextStyle(fontSize: 5)),
 SizedBox(
 width: 300,
 child: TextField(
 obscureText: true,
 controller: _textControllerPassword,
 decoration: InputDecoration(
 hintText: 'Şifre',
 border: const OutlineInputBorder(),
 suffixIcon: IconButton(
 onPressed: () {
 _textControllerPassword.clear();
 },
 icon: const Icon(Icons.clear),
 ),
 ),
 ),
 ),
 const Text('\n'),
 Row(mainAxisAlignment: MainAxisAlignment.end, children: [
 ElevatedButton(
 onPressed: () {
 inputPassWord = _textControllerPassword.text;
 inputUsername = _textControllerUsername.text;
 // TODO: make a password correction system.

 // TODO: sent and get comments to server.
 sendData();
 //if (passwordCorrection(inputUsername, inputPassWord)) {
 //setState(
 //() {
 //logedIn = true;
 //passWord = _textControllerPassword.text;
 //username = _textControllerUsername.text;
 //},
 //);
 //} else {
 //AwesomeDialog(
 // context: context,
 // dialogType: DialogType.error,
 // animType: AnimType.rightSlide,
 //title: 'Kullanıcı Adı ya da Şifre Yanlış',
 //titleTextStyle: const TextStyle(fontSize: 15),
 //desc: '',
 //btnOkText: 'Tamam',
 //btnOkOnPress: () {})
 //.show();
 //}
 },
 child: const Text('Giriş Yap'),
 ),
 ]),
 ],
 ),
 ),
 ),
 ),
 );
 }
}

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

 @override
 State<MainPage> createState() => _MainPageState();
}

//anasayfa

class _MainPageState extends State<MainPage> {
 @override
 Widget build(BuildContext context) {
 return SizedBox(
 child: MaterialApp(
 debugShowCheckedModeBanner: false,
 home: Scaffold(
 appBar: AppBar(
 centerTitle: true,
 title: const Text('Ana Sayfa'),
 backgroundColor: const Color.fromARGB(255, 77, 222, 255),
 ),
 body: Center(
 child: SizedBox(
 width: double.infinity,
 height: double.infinity,
 child: Column(
 mainAxisAlignment: MainAxisAlignment.start,
 crossAxisAlignment: CrossAxisAlignment.start,
 children: [
 const Text(''),
 Row(
 children: [
 const Text(' '),
 SizedBox(
 width: 166,
 height: 166,
 child: ElevatedButton(
 onPressed: () {
 //yemek bölümünü aç.

 appBarTopicYemek = 'Restorantlar';
 _indexCurrent = 0;
 Navigator.push(
 context,
 MaterialPageRoute(
 builder: (context) => const Yemek(),
 ),
 );
 },
 child: const Text('Yemek'),
 ),
 ),
 ],
 )
 ],
 ),
 ),
 ),
 ),
 ),
 );
 }
}

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

 @override
 State<Yemek> createState() => _YemekState();
}

//yemek bölümü.

class _YemekState extends State<Yemek> {
 @override
 Widget build(BuildContext context) {
 return SizedBox(
 child: MaterialApp(
 debugShowCheckedModeBanner: false,
 home: Scaffold(
 appBar: AppBar(
 leading: BackButton(
 onPressed: () {
 //anasayfaya yönlendir.

 Navigator.push(
 context,
 MaterialPageRoute(
 builder: (context) => const MainPage(),
 ),
 );
 },
 ),
 centerTitle: true,
 title: Text(appBarTopicYemek),
 backgroundColor: const Color.fromARGB(255, 77, 222, 255),
 ),
 body: Center(
 child: _indexCurrent == 0
 ? SizedBox(
 //homepage

 width: double.infinity,
 height: double.infinity,
 child: Column(
 mainAxisAlignment: MainAxisAlignment.center,
 crossAxisAlignment: CrossAxisAlignment.center,
 children: [
 const Text(
 'DENÜŞ \n',
 style: TextStyle(fontSize: 25),
 ),
 Text('$_x \n'),
 SizedBox(
 width: 125,
 height: 66,
 child: ElevatedButton(
 style: ElevatedButton.styleFrom(
 backgroundColor:
 const Color.fromARGB(255, 0, 216, 231),
 foregroundColor:
 const Color.fromARGB(255, 0, 0, 0),
 ),
 onPressed: () {
 setState(
 () {
 _x++;
 },
 );
 },
 child: const Text('Click'),
 ),
 ),
 ],
 ),
 )
 : _indexCurrent == 1
 ? SizedBox(
 //Wallet

 height: double.infinity,
 width: double.infinity,
 child: Column(
 children: [
 const Text(' \n \n'),
 Row(
 mainAxisAlignment: MainAxisAlignment.center,
 children: [
 SizedBox(
 height: 45,
 width: 45,
 child: ElevatedButton(
 onPressed: () {
 setState(
 () {
 _bakiye += 1;
 },
 );
 },
 child: const Text(
 '+ ',
 style: TextStyle(fontSize: 35),
 ),
 ),
 ),
 Text(
 ' $_bakiye TL ',
 style: const TextStyle(fontSize: 60),
 ),
 SizedBox(
 width: 45,
 height: 45,
 child: ElevatedButton(
 onPressed: () {
 setState(
 () {
 if (_bakiye >= 1) {
 _bakiye += -1;
 }
 },
 );
 },
 child: const Text(
 '-',
 style: TextStyle(fontSize: 35),
 ),
 ),
 ),
 ],
 ),
 ],
 ),
 )
 : logedIn == false.
 ? SizedBox(
 //User

 width: double.infinity,
 height: double.infinity,
 child: Column(
 children: [
 ElevatedButton(
 onPressed: () {
 AwesomeDialog(
 context: context,
 dialogType: DialogType.noHeader,
 animType: AnimType.rightSlide,
 title: 'Kaydol Ya Da Giriş Yap',
 titleTextStyle:
 const TextStyle(fontSize: 40),
 desc: '',
 btnCancel: ElevatedButton(
 onPressed: () {},
 child: const Text('Kaydol')),
 btnOk: ElevatedButton(
 onPressed: () {
 Navigator.push(
 context,
 MaterialPageRoute(
 builder: (context) =>
 const LogInPage()));
 },
 child: const Text('Giriş Yap')),
 ).show();
 },
 child: const Text('Giriş Yap'),
 ),
 ],
 ),
 )
 : const SizedBox(
 child: Text('Work in progress'),
 ),
 ),
 bottomNavigationBar: BottomNavigationBar(
 items: const [
 BottomNavigationBarItem(
 label: 'home',
 icon: Icon(Icons.home),
 ),
 BottomNavigationBarItem(
 label: 'wallet',
 icon: Icon(Icons.wallet),
 ),
 BottomNavigationBarItem(
 label: 'User Settings',
 icon: Icon(Icons.supervised_user_circle_rounded),
 )
 ],
 currentIndex: _indexCurrent,
 onTap: (int index) {
 setState(
 () {
 _indexCurrent = index;
 if (index == 0) {
 appBarTopicYemek = 'Restoranlar';
 }

 if (index == 1) {
 appBarTopicYemek = 'Cüzdan';
 }

 if (index == 2) {
 appBarTopicYemek = 'Kullanıcı Ayarları';
 }
 },
 );
 },
 ),
 ),
 ),
 );
 }
}

void sendData() async {
 final channel = WebSocketChannel.connect(Uri.parse('ws://$HOST:$PORT'));
 channel.sink.add(
 json.encode('FU'));
 channel.stream.listen((data) {
 String msg = data;
 print(msg);
 },
 );
}

String setVariable(
 String username, String password, String nameOfVar, String newValue) {
 final channel = WebSocketChannel.connect(Uri.parse('wss://$HOST:$PORT'));
 //send comment to server.
 String msg = 'null';
 channel.sink.add(
 json.encode('SET\$$nameOfVar\$$newValue\$$username\$$passWord'));
 //get msg from server (msg shows if username or password correct)
 channel.stream.listen(
 (data) {
 msg =json.decode(data);
 },
 );
 channel.sink.close(status.goingAway);
 return msg;
}

int getVariable(String username, String password, String nameOfVar) {
 final channel = WebSocketChannel.connect(Uri.parse('wss://$HOST:$PORT'));
 int msg = 0;
 channel.sink
 .add(json.encode('SET\$$nameOfVar\$$username\$$passWord'));
 channel.stream.listen(
 (data) {
 msg = int.parse(json.decode(data));
 },
 );
 channel.sink.close(status.goingAway);
 return msg;
}

bool passwordCorrection(username, password) {
 final channel = WebSocketChannel.connect(Uri.parse('wss://$HOST:$PORT'));
 bool correct = false;
 channel.sink
 .add(json.encode('PASSWORDCORRECTION\$$username\$$passWord'));
 channel.stream.listen(
 (data) {
 if (data == 1) {
 correct = true;
 }
 },
 );

}

import socket.
from json import dump,loads,load
from time import sleep as s

class Database():
 def __init__(self, HOST, PORT, FİLE):
 self.HOST = HOST.
 self.PORT = PORT.
 self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

 self.file = open(FİLE,"r+",encoding="utf-8")
 self.collection = load(self.file)

 def connect(self):
 try:
 self.socket.bind((self.HOST, self.PORT))
 self.socket.listen()
 except:
 print('Denüjüm bağlayamadı((((((((()))))))))')

 def get_operation(self):

 c, addr = self.socket.accept()
 print(f"{addr} connected.")
 try:
 msg = c.recv(1024).decode('utf-8').split("$")

 if msg[0] == "SET":
 #1 = variable that we want to change.
 #2 = new value of the variable.
 #3 = username.
 #4 = password.
 if self.collection[msg[3]]["password"]["value"] == msg[4]:
 #make that dont delete everythink and add a new variable. change the variables value, if it is not possible create new variable with that name.
 if msg[1] in self.collection[msg[3]]:
 if self.collection[msg[3]][msg[1]]["changeable"]:
 self.collection[msg[3]][msg[1]]["value"] = msg[2]
 c.send(repr(1).encode())
 print(f"{addr} changed {msg[1]}'s value to {msg[2]}")
 else:
 print(f"{addr} want to change {msg[1]} but {msg[1]} isnt changeable")
 c.send(repr(3).encode())
 else:
 print(f"{addr}'s want to change {msg[1]} but it doesn't exist")
 c.send(repr(2).encode())
 else:
 c.send(repr(0).encode())
 print(f"{addr}'s want to change {msg[1]} but password is wrong")

 elif msg[0] == "GET":
 if self.collection[msg[2]]["password"]["value"] == msg[3]:
 if msg[1] in self.collection[msg[2]]:
 print(f"{addr}'s got {msg[1]}'s value")
 c.send(repr(self.collection[msg[2]][msg[1]]["value"]).encode())
 else:
 print(f"{addr}'s want to get {msg[1]} but it doesn't exist")
 else:
 print(f"{addr}'s want to get {msg[1]} but password is wrong ")

 elif msg[0] == "SIGNUP":
 #send correction mail to msg[3]
 self.collection[msg[1]]["password"]["value"] = msg[2]
 c.send(repr(1).encode())

 elif msg[0] == "PASSWORDCORRECTION":
 if self.collection[msg[1]]["password"]["value"] == msg[2]:
 c.send(repr(1).encode())
 else:
 c.send(repr(0).encode())

 elif msg[0] == "FU":
 print("FUUUUUU\n\n\n\n\n\n\nFUUUUUU")

 else:
 print(f"Got a unknown foncion: {msg}")
 c.send(repr(0).encode())
 except Exception as e:
 print(c.recv(1024))
 print(f"Unable to use: {e}")

HOST = "localhost"
PORT = 4609.
FİLE = "infs.json"

db = Database(HOST, PORT, FİLE)
db.connect()

while True:
 db.get_operation()

import socket.

# PythonAnywhere'deki özel IP adresi ve port numarası.
HOST = 'your_pythonanywhere_username.pythonanywhere.com'
PORT = 12345.

# Soket oluşturma.
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
 # IP adresi ve port numarasıyla bağlantıyı başlat.
 s.bind((HOST, PORT))
 # Gelen bağlantıları dinle.
 s.listen()
 print("Sunucu dinleniyor...")

 # Bağlantıyı kabul et.
 conn, addr = s.accept()
 with conn:
 print('Bağlantı yapıldı:', addr)
 while True:
 # Veri al.
 data = conn.recv(1024)
 if not data:
 break.
 print('Gelen veri:', data.decode())
 # Veriyi geri gönder.
 conn.sendall(data)

import 'dart:io';

void main() async {
 // Sunucunun IP adresi ve port numarası.
 final String address = '127.0.0.1'; // localhost.
 final int port = 65432;

 // Sunucuya bağlan.
 Socket socket = await Socket.connect(address, port);
 print('Sunucuya bağlandı');

 // Sunucuya mesaj gönder.
 String message = 'Merhaba, bu bir test mesajıdır.';
 socket.write(message);

 // Sunucudan gelen yanıtı oku.
 socket.listen((List<int> event) {
 print('Sunucudan gelen yanıt: ${String.fromCharCodes(event)}');
 });

 // Soketi kapat.
 // socket.close();
}