# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

import logging
from re import sub, finditer
import subprocess
from vcgencmd import Vcgencmd
import RPi.GPIO as GPIO


from odoo.addons.hw_drivers.interface import Interface

_logger = logging.getLogger(__name__)


class DisplayInterface(Interface):
    _loop_delay = 0
    connection_type = 'display'

    def get_devices(self):
        display_devices = {}
        x_screen = 0
        hdmi_port = {'hdmi_0' : 2}
        rpi_type = GPIO.RPI_INFO.get('TYPE')
        # RPI 3B+ response on for booth hdmi port
        if 'Pi 4' in rpi_type:
            hdmi_port.update({'hdmi_1': 7})

        try:
            for hdmi in hdmi_port:
                power_state_hdmi = Vcgencmd().display_power_state(hdmi_port.get(hdmi))
                if power_state_hdmi == 'on':
                    iot_device = {
                        'identifier': hdmi,
                        'name': 'Display hdmi ' + str(x_screen),
                        'x_screen': str(x_screen),
                    }
                    display_devices[hdmi] = iot_device
                    x_screen += 1
        except subprocess.CalledProcessError:
            _logger.warning('Vcgencmd "display_power_state" method call failed')

        if not len(display_devices):
            # No display connected, create "fake" device to be accessed from another computer
            display_devices['distant_display'] = {
                'name': "Distant Display",
            }

        return display_devices