import time
from RPi import GPIO


class LCD_Display:

    def __init__(self, pins,isVierBits=False):
        self.isVierBits = isVierBits
        self.E = pins[0]
        self.RS = pins[1]

        self.databits = [pins[2], pins[3], pins[4], pins[5], pins[6],
                         pins[7], pins[8], pins[9]]  # D0,D1,D2,D3, D4, D5, D6, D7

        GPIO.setmode(GPIO.BCM)
        GPIO.setup(pins, GPIO.OUT)

        GPIO.output(self.E, 0)
        GPIO.output(self.RS, 0)
        for i in range(2, 10):
            GPIO.output(pins[i], 0)

    def __initList(self, databits_list):
        self.databits = []
        for bit in databits_list:
            self.databits.append(bit)

        return self.databits

    def __repr__(self):
        for bit in self.databits:
            print(bit)

    def send_character(self, char):
        GPIO.output(self.RS, 0)
        GPIO.output(self.E, 1)  # hoog naar

        self.set_data_bits(char)

        GPIO.output(self.E, 0)  # laag

        time.sleep(0.01)

    def set_data_bits(self, byte):
        mask = 0x80
        for i in range(0, 8):
            # byte is de waarde die je doorkrijgt
            if (byte & mask) > 0:
                GPIO.output(self.databits[i], 1)
                # zet GPIO pin i op 1  # code zelf aanpassen
            else:
                GPIO.output(self.databits[i], 0)
                # zet GPIO pin i op 0  # code zelf aanpassen
            mask >>= 1

    def send_instruction(self, byte):
        GPIO.output(self.RS, 0)
        GPIO.output(self.E, 1)  # hoog naar

        self.set_data_bits(byte)

        GPIO.output(self.E, 0)  # laag

        time.sleep(0.01)

    def function_set(self):
        # 00111000
        self.send_instruction(56)

    def write_message(self, message):

        characters = list(message)
        for char in characters:
            char_ascii = ord(char)

            self.send_character(char_ascii)
            print(f"Char {char} verzonden als {char_ascii}")

    def display_on(self):
        # self.send_instruction([1, 1, 1, 1, 0, 0, 0, 0])
        self.send_instruction(15)

    def clear_LCD(self):
        # self.send_instruction([1, 0, 0, 0, 0, 0, 0, 0])
        self.send_instruction(128)

    def cursor_home(self):
        # self.send_instruction([1, 1, 0, 0, 0, 0, 0, 0])
        self.send_instruction(192)

    def init_LCD(self):
        self.function_set()
        self.display_on()
        self.clear_LCD()
        self.cursor_home()

    def second_row(self):
        pass

    def writeA(self):
        pass

    def short_delay(self):
        time.sleep(0.01)

    def long_delay(self):
        time.sleep(1)


pins = [21, 20, 16, 12, 25, 24, 23, 26, 19, 13]


try:
    display = LCD_Display(pins,False)
    display.init_LCD()
    while True:

        message = input("Wat wil je tonen? > ")

        if len(message) > 0:
            display.write_message(message)
            display.long_delay()
            if len(message) > 30:
                display.short_delay()
        else:
            print("** Je moet een bericht ingeven **")

except KeyboardInterrupt:
    print("Ok, Bye!")
except Exception as ex:
    print("Error: {0}".format(ex))
finally:
    GPIO.cleanup()