from django.shortcuts import render
from django.http import HttpResponse
import ctypes

pin_control = ctypes.CDLL("@pin_control@/lib/libpin_control.so")
print(f"INIT: {pin_control.init_gpio()}")

leds_state = {
    1: False,
    2: False,
    3: False,
    4: False,
    5: False,
}

leds_gpio = {
    1: 5,
    2: 6,
    3: 13,
    4: 19,
    5: 26,
    7: 21,
    8: 20,
    9: 16,
    10: 12,
}

def home(request):
    return render(request, "home.html") 


def take_photo(request):
    pin_control.capture_image(b'/run/nginx/static/photo.jpg')
    return HttpResponse("Ok")


def led(request, led):
    if request.method == "GET":
        if led == 0: return turn_off_all()
        if led == 6: return turn_on_all()
        state = leds_state.get(led)
        if state is not None: return toggle_led(led, state)
        print("UNKNOWN LED")
    return HttpResponse("Ok")

def turn_off_all():
    for pin in leds_gpio.values():
        pin_control.turn_off_pin(pin)
    return HttpResponse("Ok")

def turn_on_all():
    for pin in leds_gpio.values():
        pin_control.turn_on_pin(pin)
    return HttpResponse("Ok")

def toggle_led(led, turn_on):
    gpio_pin = leds_gpio[led]
    if turn_on:
        pin_control.turn_off_pin(gpio_pin)
    else:
        pin_control.turn_on_pin(gpio_pin)
    leds_state[led] = not turn_on
    return HttpResponse("on" if turn_on else "off")


def button_detect(request, pin):
    return HttpResponse(pin_control.probe_pin(leds_gpio[pin]))