"""
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ Raspberry Pi Pico I2C LCD Display (MicroPython)          ┃
┃                                                          ┃
┃ An example of using an I2C LCD display with the          ┃
┃ Raspberry Pi Pico.                                       ┃
┃                                                          ┃
┃ Copyright (c) 2023 Anderson Costa                        ┃
┃ GitHub: github.com/arcostasi                             ┃
┃ License: MIT                                             ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
"""

from machine import I2C, Pin
from time import sleep
from pico_i2c_lcd import I2cLcd

btn_green = Pin(8, Pin.IN, Pin.PULL_UP)
btn_blue = Pin(9, Pin.IN, Pin.PULL_UP)
btn_yellow = Pin(10, Pin.IN, Pin.PULL_UP)
btn_red = Pin(15, Pin.IN, Pin.PULL_UP)

i2c_bus = I2C(0, sda=Pin(0), scl=Pin(1), freq=40000)
i2c_address = i2c_bus.scan()[0]
lcd_display = I2cLcd(i2c_bus, i2c_address, 2, 16)
 
def lcd_display_list(strings):
    if strings:
        for line in strings:
            lcd_display.clear()
            lcd_display.move_to(0, 0)
            lcd_display.putstr(line)
            sleep(1)
    else:
        lcd_display.move_to(0, 0)
        lcd_display.putstr("no colours")
        lcd_display.move_to(0, 1)
        lcd_display.putstr("pressed")

# add to this list in the while loop below
colours = []

# Part 1:  Receiving input and adding to a list
while True:
    if btn_green.value() == 0:
        print("green pressed")
        # add "green" to the colours list

    elif btn_blue.value() == 0:
        print("blue pressed")
        # add "blue" to the colours list
    elif btn_yellow.value() == 0:
        print("yellow pressed")
        # add "yellow" to the colours list

    elif btn_red.value() == 0:
        print("red pressed")
        # pressing the red button will stop receiving input from the buttons
        break
    
    sleep(0.3)

print("colours pressed were: \n")
print(colours)
lcd_display_list(colours)

# Part 2:  Go through the colours list and convert all elements to upper case (must use a for loop).  
# print capitalised elements to the console using print()






# Part 3:  Open and read the colours.txt file into a list.





# add the contents of the colour list from above to the colours.txt file.





# reread the modified colours.txt file and place the each line in a list called lines
lines = []
# code here

lcd_display_list(lines)





with open("colours.txt", "r") as f:
    contents = f.read()
    sleep(0.1)
    print(contents)


sleep(1)