# This script installs the necessary packages for using PyQt5 and python-qt-binding.

# First, we need to check if pip is installed. If not, we will install it.
# The command "which" checks if a program is installed and returns its path.
# The "if" statement checks if the return value is empty, indicating that pip is not installed.
# If it is not empty, the "then" block will not be executed.
if [ -z "$(which pip)" ]; then
    # The "echo" command prints a message to the terminal.
    echo "Pip is not installed. Installing now..."
    # The "sudo" command allows us to run a command with root privileges.
    # The "apt-get" command is used to install packages on Debian-based systems.
    # The "-y" flag automatically answers "yes" to any prompts during installation.
    sudo apt-get install -y python-pip
fi

# Now that we have pip installed, we can use it to install the necessary packages.
# The "pip install" command is used to install packages from the Python Package Index (PyPI).
# The "PyQt5" package is a Python binding for the Qt application framework.
# The "python-qt-binding" package provides additional Qt bindings for Python.
pip install PyQt5
pip install python-qt-binding

# Import the logging library to enable logging functionality
import logging

# Import the necessary packages from PyQt5 to create a GUI
from PyQt5.QtWidgets import QApplication, QMainWindow, QTextEdit, QVBoxLayout

# Import the Qt library from python_qt_binding to access Qt functionalities
from python_qt_binding.QtCore import Qt

# Create a QApplication instance to manage the GUI application
app = QApplication([])

# Create a QMainWindow instance to serve as the main window of the GUI
window = QMainWindow()

# Create a QTextEdit instance to display text in the GUI
text_edit = QTextEdit()

# Create a QVBoxLayout instance to organize the layout of the GUI
layout = QVBoxLayout()

# Set the alignment of the layout to be centered
layout.setAlignment(Qt.AlignCenter)

# Add the text_edit widget to the layout
layout.addWidget(text_edit)

# Set the layout of the main window to be the layout we created
window.setLayout(layout)

# Set the title of the main window
window.setWindowTitle("My GUI")

# Show the main window
window.show()

# Start the event loop of the application
app.exec_()

# Close the application once the event loop is finished
app.quit()

# Import the logging library
import logging

# Set up the logger with the name of the current module
logger = logging.getLogger(__name__)

# Create a handler to handle the logging output
handler = logging.StreamHandler()

# Create a formatter to format the logging output
formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')

# Set the formatter for the handler
handler.setFormatter(formatter)

# Add the handler to the logger
logger.addHandler(handler)

# The logger is now set up and ready to be used for logging purposes.

# Import necessary libraries
import sys
from PyQt5.QtWidgets import QMainWindow, QTextEdit, QVBoxLayout, QWidget, QApplication

# Create a class for our main window
class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__() # Call the parent class constructor
        
        # Create a text edit widget
        self.text_edit = QTextEdit()
        
        # Create a layout and add the text edit widget to it
        layout = QVBoxLayout()
        layout.addWidget(self.text_edit)
        
        # Create a widget and set the layout to it
        widget = QWidget()
        widget.setLayout(layout)
        
        # Set the central widget of the main window to our widget
        self.setCentralWidget(widget)
        
        # Set up our logger to display in the text edit
        handler = logging.StreamHandler(sys.stdout) # Create a stream handler to display logs in the console
        formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s') # Create a formatter to display date/time, log level, and message
        handler.setFormatter(formatter) # Set the formatter to the handler
        self.logger = logging.getLogger(__name__) # Get a logger for our current module
        self.logger.addHandler(handler) # Add the handler to our logger
        
        # Show the window and start the event loop
        self.show()
        sys.exit(app.exec_()) # Start the event loop for the application

# Create an instance of the application
app = QApplication(sys.argv)

# Create an instance of our main window
window = MainWindow()

# Start the application
sys.exit(app.exec_())

# Import necessary libraries
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow

# Define main function
def main():
    # Create an instance of QApplication
    app = QApplication(sys.argv)
    
    # Create an instance of MainWindow class
    window = MainWindow()
    
    # Execute the application and exit when closed
    sys.exit(app.exec_())

# Check if the script is being run directly
if __name__ == '__main__':
    # Call the main function
    main()

# Define MainWindow class
class MainWindow(QMainWindow):
    # Constructor
    def __init__(self):
        # Call the parent constructor
        super().__init__()
        
        # Create a text edit widget
        text_edit = QTextEdit()
        
        # Add the text edit widget to a layout
        layout = QVBoxLayout()
        layout.addWidget(text_edit)
        
        # Set the layout as the central widget
        self.setCentralWidget(layout)
        
        # Set up the logger with a stream handler pointing to sys.stdout
        self.setup_logger()
        
        # Show the main window
        self.show()
        
    # Function to set up the logger
    def setup_logger(self):
        # Import necessary library
        import logging
        
        # Create a logger
        logger = logging.getLogger()
        
        # Set the logger level to INFO
        logger.setLevel(logging.INFO)
        
        # Create a stream handler pointing to sys.stdout
        stream_handler = logging.StreamHandler(sys.stdout)
        
        # Add the stream handler to the logger
        logger.addHandler(stream_handler)
        
# Run the application
main()