"""
Author:     Tobias Müller
Date:       30.06.2023
Version:    1.0

Main File to run on the pico.
"""

##############################                 Modules                ##############################

from Libs.LCD_Shield import LCD
from time import sleep_us
from machine import Pin

##############################            Global Variables            ##############################

Display = LCD()

##############################                 Main                   ##############################

def main():
    """
    Main Program
    """

    ##########################           Local Variables            ############################

    button_up = Pin(6,Pin.IN,Pin.PULL_DOWN)
    button_down = Pin(7,Pin.IN,Pin.PULL_DOWN)
    button_right = Pin(8,Pin.IN,Pin.PULL_DOWN)
    button_left = Pin(9,Pin.IN,Pin.PULL_DOWN)
    led_green = Pin(16,Pin.OUT)
    led_red = Pin(17,Pin.OUT)
    
    ##########################                Code                  ############################

    led_green.on()
    led_red.on()
    Display.lcd_line_mode = LCD.TWO_LINES 
    Display.print("Hochschule  Anhalt")
    for _ in range(0,3):
        for brightness in range(0,105,5):
            Display.lcd_brightness = brightness
            sleep_us(25000)
        for brightness in range(0,105,5):
            Display.lcd_brightness = 100 - brightness
            sleep_us(20000)
    Display.clear()
    Display.print("LCD Shield testing:")
    for brightness in range(0,105,5):
        Display.lcd_brightness = brightness
        sleep_us(20000)
    sleep_us(2000000)
    while True:
        if button_up.value():
            Display.clear()
            Display.lcd_line_mode = LCD.FOUR_LINES 
            Display.print("button", row=1)
            Display.print("up     *", row=2)
            Display.print("* *", row=3, column=7)
            Display.print("*", row=4, column=8)
            led_red.off()
            sleep_us(300000)
            Display.clear(row=2, column=8)
            led_red.on()
            sleep_us(300000)
        elif button_down.value():
            Display.clear()
            Display.lcd_line_mode = LCD.FOUR_LINES 
            Display.print("button    down   *        * *        *")
            led_green.off()
            sleep_us(300000)
            Display.clear(row=4)
            led_green.on()
            sleep_us(300000)
        elif button_left.value():
            Display.clear()
            Display.lcd_line_mode = LCD.FOUR_LINES 
            Display.print("button", row=1)
            Display.print("left   *", row=2)
            Display.print("* *", row=3, column=7)
            Display.print("*", row=4, column=8)
            led_green.off()
            led_red.on()
            sleep_us(300000)
            Display.clear(row=3, column=7)
            led_green.on()
            led_red.off()
            sleep_us(300000)
        elif button_right.value():
            Display.clear()
            Display.lcd_line_mode = LCD.FOUR_LINES 
            Display.print("button\nright  *\n      * *\n       *")
            led_green.off()
            led_red.off()
            sleep_us(300000)
            Display.clear(row=3, column=9)
            led_green.on()
            led_red.on()
            sleep_us(300000)
        else:
            Display.clear()
            Display.lcd_line_mode = LCD.THREE_LINES_MIDDLE
            led_red.on()
            led_green.on()
            Display.print("LCD Shield")
            Display.print("a button", row=3, column=2)
            for pattern in range(0,9):
                if pattern == 0:
                    Display.print("   push   ", row=2)
                elif pattern == 1:
                    Display.print(">  push  <", row=2)
                elif pattern == 2:
                    Display.print(">> push <<", row=2)
                elif pattern == 3:
                    Display.print(">>>push<<<", row=2)
                elif pattern == 4:
                    Display.print(" >>push<< ", row=2)
                elif pattern == 5:
                    Display.print("  >push<  ", row=2)
                elif pattern == 6:
                    Display.print("   push   ", row=2)
                else:
                     Display.clear(row=2)
                sleep_us(100000)
            

##############################                  Run                   ##############################

if __name__ == "__main__":
    main()