#!/usr/bin/env python3

# Библиотеки для работы примера
import time
import datetime
from gpiozero import Button
from unicornhatmini import UnicornHATMini
from random import randrange
from signal import pause

# Создаём объект для работы с модулем
unicornhatmini = UnicornHATMini()
# Устанавливаем яркость светодиодов
unicornhatmini.set_brightness(0.05)

# Переменные
red = 0
green = 0
blue = 0
dotson = True
previousMinute = -1
mode = "time"

# Массив графических чисел
numbers = {
    "0": [
        [2, 0],
        [1, 0],
        [0, 0],
        [0, 1],
        [0, 2],
        [0, 3],
        [0, 4],
        [0, 5],
        [0, 6],
        [1, 6],
        [2, 6],
        [2, 5],
        [2, 4],
        [2, 3],
        [2, 2],
        [2, 1],
    ],
    "1": [
        [0, 1],
        [1, 0],
        [1, 1],
        [1, 2],
        [1, 3],
        [1, 4],
        [1, 5],
        [1, 6],
        [0, 6],
        [2, 6],
    ],
    "2": [
        [0, 0],
        [1, 0],
        [2, 0],
        [2, 1],
        [2, 2],
        [1, 3],
        [0, 4],
        [0, 5],
        [0, 6],
        [1, 6],
        [2, 6],
    ],
    "3": [
        [0, 0],
        [1, 0],
        [2, 0],
        [2, 1],
        [2, 2],
        [2, 3],
        [1, 3],
        [0, 3],
        [2, 4],
        [2, 5],
        [2, 6],
        [1, 6],
        [0, 6],
    ],
    "4": [
        [0, 0],
        [0, 1],
        [0, 2],
        [0, 3],
        [1, 3],
        [2, 3],
        [2, 0],
        [2, 1],
        [2, 2],
        [2, 3],
        [2, 4],
        [2, 5],
        [2, 6],
    ],
    "5": [
        [0, 0],
        [1, 0],
        [2, 0],
        [0, 1],
        [0, 2],
        [0, 3],
        [1, 3],
        [2, 3],
        [2, 4],
        [2, 5],
        [2, 6],
        [1, 6],
        [0, 6],
    ],
    "6": [
        [2, 0],
        [1, 0],
        [0, 0],
        [0, 1],
        [0, 2],
        [0, 3],
        [0, 4],
        [0, 5],
        [0, 6],
        [1, 6],
        [2, 6],
        [2, 5],
        [2, 4],
        [2, 3],
        [1, 3],
    ],
    "7": [[0, 0], 
        [1, 0], 
        [2, 0], 
        [2, 1], 
        [2, 2], 
        [2, 3], 
        [1, 4], 
        [1, 5], 
        [1, 6]
    ],
    "8": [
        [2, 0],
        [1, 0],
        [0, 0],
        [0, 1],
        [0, 2],
        [0, 3],
        [0, 4],
        [0, 5],
        [0, 6],
        [1, 6],
        [2, 6],
        [2, 5],
        [2, 4],
        [2, 3],
        [1, 3],
        [2, 2],
        [2, 1],
    ],
    "9": [
        [2, 0],
        [1, 0],
        [0, 0],
        [0, 1],
        [0, 2],
        [0, 3],
        [0, 6],
        [1, 6],
        [2, 6],
        [2, 5],
        [2, 4],
        [2, 3],
        [1, 3],
        [2, 2],
        [2, 1],
    ],
    ":": [[1, 2], [1, 4]],
    ".": [[1, 6]],
}

# Кнопки
button_a = Button(5)
button_b = Button(6)

# Функция отображения времени
def enable_show_time(button):
    global mode
    mode = "time"


# Функция отображения даты
def enable_show_date(button):
    global mode
    mode = "date"


# Функция смена цвета
def change_color():
    global red
    global green
    global blue
    red = randrange(256)
    green = randrange(256)
    blue = randrange(256)


# Считываем состояние кнопок
button_a.when_pressed = enable_show_date
button_a.when_released = enable_show_time
button_b.when_pressed = change_color


def letter(char, offset):
    for pixel in numbers[char]:
        x = pixel[0] + offset
        y = pixel[1]
        unicornhatmini.set_pixel(x, y, red, green, blue)


# Функция отображения времени
def show_time(now):
    global dotson
    unicornhatmini.clear()
    timestring = now.strftime("%H%M")
    letter(timestring[0], 0)
    letter(timestring[1], 4)
    if dotson == True:
        letter(":", 7)
    letter(timestring[2], 10)
    letter(timestring[3], 14)
    unicornhatmini.show()


# Функция отображения даты
def show_date(now):
    global dotson
    unicornhatmini.clear()
    timestring = now.strftime("%d%m")
    letter(timestring[0], 0)
    letter(timestring[1], 4)
    letter(".", 7)
    letter(timestring[2], 10)
    letter(timestring[3], 14)
    unicornhatmini.show()


while True:
    # Считываем дату и время
    now = datetime.datetime.now()
    # Если прошла минута, меняет цвет
    if now.minute != previousMinute:
        change_color()
    # Если флаг установлен в «time», отображаем время
    if mode == "time":
        show_time(now)
    # Если флаг установлен в «date», отображаем дату
    if mode == "date":
        show_date(now)

    dotson = not dotson
    previousMinute = now.minute
    time.sleep(0.5)