messenger.py

"""
перекомпиляция
pyuic5 messenger.ui -o clientui.py
"""
from datetime import datetime

from PyQt5 import QtWidgets, QtCore
import clientui
import requests


class ExampleApp(QtWidgets.QMainWindow, clientui.Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)

        self.pushButton.pressed.connect(self.send_message)

        self.last_timestamp = 0
        self.timer = QtCore.QTimer()
        self.timer.timeout.connect(self.update_messages)
        self.timer.start(1000)

    def send_message(self):
        username = self.lineEdit.text()
        password = self.lineEdit_2.text()
        text = self.textEdit.toPlainText()

        requests.get(
            "http://127.0.0.1:5000/send_message",
            json={
                "username": username,
                "password": password,
                "text": text
            }
        )

        self.textEdit.setText("")

    def update_messages(self):
        response = requests.get(
            "http://127.0.0.1:5000/get_messages",
            params={"after": self.last_timestamp}
        )
        messages = response.json()["messages"]

        for message in messages:
            dt = datetime.fromtimestamp(message["timestamp"]).strftime("%H:%M:%S %d/%m/%Y")
            self.textBrowser.append(dt + " " + message["username"])
            self.textBrowser.append(message["text"])
            self.textBrowser.append("")
            self.last_timestamp = message["timestamp"]


app = QtWidgets.QApplication([])
window = ExampleApp()
window.show()
app.exec_()