import queue
import threading
import time
import tkinter as tk
from car import KITT
import serial.tools.list_ports
from pynput import keyboard

if __name__ == "__main__":
    serial_selector = tk.Tk()
    serial_selector.title("Select serial port")


    ports = list(serial.tools.list_ports.comports())
    length = len(ports) * 25
    serial_selector.geometry(f"600x{length+50}")
    selected_port = tk.StringVar()

    for port in ports:
        tk.Radiobutton(serial_selector,text = f"{port.device}",variable=selected_port,value= port.device).pack()

    def select_port():
        global selected_port
        selected_port = selected_port.get()
        serial_selector.destroy()

    button = tk.Button(serial_selector, text="Select serial port", command=select_port)
    button.pack()
    serial_selector.mainloop()

    car = KITT(f"{selected_port}")
    root = tk.Tk()
    root.title("Patatje Oorloog")
    root.geometry("800x600")

    speed_label = tk.Label(root, text=f"Speed {car.get_speed()}")
    speed_label.grid(row = 0, column = 0)

    speed_var = tk.StringVar()
    speed_entry = tk.Entry(root, textvariable=speed_var)
    speed_entry.grid(row = 0, column = 1)

    def speed_btn():
        global car
        car.set_speed(speed_var.get())
        speed_label.config(text = f"Speed {car.get_speed()}")

    speed_set_btn = tk.Button(root, text="Set Speed", command=speed_btn)
    speed_set_btn.grid(row = 0, column = 2)

    angle_label = tk.Label(root, text=f"Angle {car.get_angle()}")
    angle_label.grid(row = 1, column = 0)

    angle_var = tk.StringVar()
    angle_entry = tk.Entry(root, textvariable=angle_var)
    angle_entry.grid(row=1, column=1)


    def angle_btn():
        global car
        car.set_angle(angle_var.get())
        angle_label.config(text=f"Speed {car.get_angle()}")


    angle_set_btn = tk.Button(root, text="Set Angle", command=angle_btn)
    angle_set_btn.grid(row=1, column=2)

    beacon_label = tk.Label(root, text=f"Beacon {car.get_beacon_state()}")
    beacon_label.grid(row = 2, column = 0)

    def toggle_beacon_btn():
        global car
        car.toggle_beacon()
        beacon_label.config(text = f"Beacon {car.get_beacon_state()}")

    beacon_toggle = tk.Button(root, text="Toggle Beacon", command=toggle_beacon_btn)
    beacon_toggle.grid(row = 2, column = 1)

    def close_btn_func():
        car.stop_beacon()
        car.stop()
        try:
            car.close()
        except OSError:
            pass
        root.destroy()

    close_btn = tk.Button(root, text="Close", command=close_btn_func)
    close_btn.grid(row = 10,column = 0)

    # Thread-safe queue for passing keys from listener to Tkinter
    key_queue = queue.Queue()
    last_key = None
    def start_listener():
        """Start pynput listener in a background thread."""

        def on_press(key):
            # Put a string representation of the key into the queue
            global last_key
            try:
                key_queue.put(f"{key.char}")
                if True: #not key == last_key :
                    if key.char == "w":
                        car.set_speed(165)
                        speed_label.config(text = f"Speed {car.get_speed()}")
                    if key.char == "s":
                        car.set_speed(140)
                        speed_label.config(text=f"Speed {car.get_speed()}")
                    if key.char == "a":
                        car.set_angle(200)
                        angle_label.config(text=f"Angle {car.get_angle()}")
                    if key.char == "d":
                        car.set_angle(100)
                        angle_label.config(text=f"Angle {car.get_angle()}")
                #last_key = key
            except AttributeError:
                key_queue.put(str(key))

        def on_release(key):
            # Stop listener if ESC is pressed
            if key == keyboard.Key.esc:
                return False
            try :
                if key.char == "w":
                    car.set_speed(150)
                    speed_label.config(text=f"Speed {car.get_speed()}")
                if key.char == "s":
                    car.set_speed(150)
                    speed_label.config(text=f"Speed {car.get_speed()}")
                if key.char == "a":
                    car.set_angle(150)
                    angle_label.config(text=f"Angle {car.get_angle()}")
                if key.char == "d":
                    car.set_angle(150)
                    angle_label.config(text=f"Angle {car.get_angle()}")
            except AttributeError:
                pass
            return None

        def run_listener():
            with keyboard.Listener(on_press=on_press,
                                   on_release=on_release) as listener:
                listener.join()

        # Run listener in its own thread so it does not block Tkinter
        t = threading.Thread(target=run_listener, daemon=True)
        t.start()

    def poll_queue():
        """Check the queue for new keys and update the label."""
        try:
            while True:
                k = key_queue.get_nowait()
                current = label_var.get()
                label_var.set(f"Last key: {k}")
        except queue.Empty:
            pass
        # Schedule next poll
        root.after(10, poll_queue)

    label_var = tk.StringVar(value="Press any key (global). ESC stops listener.")
    label = tk.Label(root, textvariable=label_var, width=50)
    label.grid(row = 9,column = 0)

    start_button = tk.Button(root, text="Start listener", command=start_listener)
    start_button.grid(row = 9, column = 1)

    # Start polling the queue
    root.after(10, poll_queue)
    root.protocol("WM_DELETE_WINDOW", close_btn_func)
    root.mainloop()