import sys
import requests
from PyQt5.QtWidgets import (QApplication, QWidget, QGridLayout,
                             QLabel, QLineEdit, QPushButton, QRadioButton, QCheckBox,
                             QComboBox, QSlider, QProgressBar, QMessageBox, QTextEdit)
from PyQt5.QtCore import Qt


class MainWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.setup_interface()

    def setup_interface(self):
        layout = QGridLayout()

        # User input section
        user_label = QLabel("Username:")
        self.username_field = QLineEdit()
        layout.addWidget(user_label, 0, 0)
        layout.addWidget(self.username_field, 0, 1)

        # Rich text editor
        editor_label = QLabel("Details:")
        self.details_editor = QTextEdit()
        self.details_editor.setAcceptRichText(True)
        layout.addWidget(editor_label, 1, 0)
        layout.addWidget(self.details_editor, 1, 1)

        # Text manipulation buttons
        extract_btn = QPushButton("Extract HTML", self)
        extract_btn.clicked.connect(self.extract_html_content)
        layout.addWidget(extract_btn, 2, 0)

        insert_btn = QPushButton("Insert HTML", self)
        insert_btn.clicked.connect(self.insert_html_content)
        layout.addWidget(insert_btn, 2, 1)

        # Radio button group
        option_a = QRadioButton("Selection A")
        option_b = QRadioButton("Selection B")
        option_b.setChecked(True)
        layout.addWidget(option_a, 3, 0)
        layout.addWidget(option_b, 3, 1)

        # Checkbox
        consent_box = QCheckBox("Accept terms")
        consent_box.setChecked(True)
        layout.addWidget(consent_box, 4, 0, 1, 2)

        # Dropdown menu
        choice_menu = QComboBox()
        choice_menu.addItems(["Alpha", "Beta", "Gamma"])
        layout.addWidget(choice_menu, 5, 0, 1, 2)

        # Slider control
        value_slider = QSlider(Qt.Horizontal)
        value_slider.setRange(0, 100)
        value_slider.setValue(50)
        layout.addWidget(value_slider, 6, 0, 1, 2)

        # Progress indicator
        status_bar = QProgressBar()
        status_bar.setValue(75)
        layout.addWidget(status_bar, 7, 0, 1, 2)

        # Action buttons
        fetch_btn = QPushButton("Retrieve Data")
        send_btn = QPushButton("Send Data")
        fetch_btn.clicked.connect(self.retrieve_data)
        send_btn.clicked.connect(self.transmit_data)

        button_row = QHBoxLayout()
        button_row.addWidget(fetch_btn)
        button_row.addWidget(send_btn)
        layout.addLayout(button_row, 8, 0, 1, 2)

        self.setLayout(layout)

    def retrieve_data(self):
        try:
            api_response = requests.get('http://localhost:5000/api/data')
            server_data = api_response.json()
            QMessageBox.information(self, "Server Response", 
                                  f"Service: {server_data['service']}, Release: {server_data['release']}")
        except Exception as e:
            QMessageBox.warning(self, "Error", f"Failed to connect: {str(e)}")

    def transmit_data(self):
        payload = {
            'username': self.username_field.text(),
            'details': self.details_editor.toHtml()
        }
        try:
            api_response = requests.post('http://localhost:5000/api/submit', json=payload)
            result = api_response.json()
            QMessageBox.information(self, "Submission Status", 
                                  f"Result: {result['result']}, Info: {result['info']}")
        except Exception as e:
            QMessageBox.warning(self, "Error", f"Failed to submit: {str(e)}")

    def extract_html_content(self):
        html_data = self.details_editor.toHtml()
        print("Extracted HTML:", html_data)

    def insert_html_content(self):
        sample_html = """
        <h2>Sample Content</h2>
        <p>This demonstrates <em>formatted</em> text in QTextEdit.</p>
        <ul>
            <li>First item</li>
            <li>Second item</li>
            <li>Third item</li>
        </ul>
        <p style='color:green;'>Green highlighted text.</p>
        """
        self.details_editor.setHtml(sample_html)


if __name__ == '__main__':
    application = QApplication(sys.argv)
    window = MainWindow()
    window.setWindowTitle("PyQt5-Flask Demo")
    window.show()
    sys.exit(application.exec_())

import json
from flask import Flask, request, jsonify

server = Flask(__name__)


@server.route('/api/data', methods=['GET'])
def fetch_data():
    response_data = {
        "service": "Backend API",
        "release": "2.0.1",
        "status": "operational"
    }
    return jsonify(response_data)


@server.route('/api/submit', methods=['POST'])
def handle_submission():
    received_data = json.loads(request.data)
    print("Received payload:", received_data)
    
    # Process data here...
    
    return jsonify({
        "result": "processed",
        "info": "data received successfully"
    })


if __name__ == '__main__':
    server.run(port=5000, debug=True)