#imports necessary libraries
import machine
import utime 
# SEtup Inptu and output pins
redLED = machine.Pin(2,machine.Pin.OUT)
greenLED = machine.Pin(4,machine.Pin.OUT)
yellowLED = machine.Pin(14,machine.Pin.OUT)
blueLED = machine.Pin(12,machine.Pin.OUT)
sw_input = machine.Pin(35,machine.Pin.IN)
currentTime =0
delayBlink = 1
prevValue = 0


def BlinkLED(led1,led2): # this funciton holds the blinking of LED
    global currentTime #set value of currentTime to be accessed in this functions
    global prevValue #set value of prevValue to be accessed in this functions

    if(utime.time() >= currentTime): # test if utime.time() reached the value of currentTime
        currentTime = delayBlink +currentTime # this will increment new value of currentTime with respect to delayBlink
        print(currentTime)
        
        
        # this will alternate the blink of LED
        if(prevValue == 1): 
            led1.value(0)
            led2.value(prevValue)
        else:
            led1.value(1)
            led2.value(prevValue)
        prevValue = led1.value()

    
def SteadyLED(led1,led2):# this will steady 1 whatever led is passed in the function
    led1.value(1)
    led2.value(1)
def loop(): # this is the function that will run in loop
    print(sw_input)
    # if-else statement to trigger the sw_input
    # depending on the sw_input value, specific LED is passed in the functions to manipulate its state
    if sw_input.value() == 1:
        BlinkLED(blueLED,yellowLED)
        SteadyLED(redLED,greenLED)
    else:
        BlinkLED(redLED,greenLED)
        SteadyLED(blueLED,yellowLED)
    

while True:# this will execute a loop to run function loop()
    loop()