"""
Starting launcher of the game. This is where you host new games or join other ones.
"""
import tkinter as tk

global running


def main():
    """
    Runs the game launcher.
    """
    main_window = tk.Tk()
    main_window.title('PyPong Launcher')
    main_window.resizable(width=False, height=False)

    main_window.geometry('500x250')

    def quit_launcher():
        """
        Quits the main menu.
        """
        global running
        running = False

    def get_games():
        """
        Refresh the games list.
        """
        listbox.delete(0, tk.END)
        listbox.insert(0, 'Searching for games...')
        # Networking code will go here eventually

    # Create the top title label
    title_label = tk.Label(text='PyPong Launcher', fg='white', bg='#000040', padx=1, pady=20)
    title_label.pack(side=tk.TOP, fill=tk.BOTH)

    # Create the list of games
    listbox = tk.Listbox(main_window)
    listbox.pack(side=tk.LEFT, expand=True, fill=tk.BOTH)
    # Add scrollbar
    scrollbar = tk.Scrollbar(main_window)
    scrollbar.pack(side=tk.LEFT, fill=tk.Y)
    # Link scrollbar to list of games
    listbox.config(yscrollcommand=scrollbar.set)
    scrollbar.config(command=listbox.yview)

    # Create buttons
    button_frame = tk.Frame(main_window)
    tk.Button(button_frame, text='Host a Game', height=3, width=30).pack()
    tk.Button(button_frame, text='Join Selected Game', height=3, width=30).pack()
    tk.Button(button_frame, text='Refresh Game List', height=2, width=20, command=get_games).pack()
    button_frame.pack(side=tk.RIGHT)

    # Set it so that if the X is pressed the application quits
    main_window.protocol('WM_DELETE_WINDOW', quit_launcher)

    global running
    running = True

    while running:
        main_window.update()


if __name__ == '__main__':
    main()