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# Task 1 #2 :   Button (Wokwi/hardware) turn on/off LED in Blynk.
#               Switch (Blynk) turn on/off LED in Wokwi/hardware.
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from machine import Pin
import time
import network
import BlynkLib

###   Button's pin (real & virtual), LED's pin (real & virtual), WiFi and Blynk credentials
b_pin = 35
b_vir = 3
led_pin = 33
led_vir = 1
SSID = 'Wokwi-GUEST'
PASS = ''
TOKEN = 'E_4lvXx6QMQBXIxVmOzphQ5CQzcaYqfx'

###   Connect to WiFi
wifi = network.WLAN(network.STA_IF)
if not wifi.isconnected():
    print("Connecting to {}...".format(SSID))
    wifi.active(True)
    wifi.connect(SSID, PASS)
    while not wifi.isconnected():
        pass

print('Connected! IP:', wifi.ifconfig()[0])

###   Initialize button, LED and Blynk
led = Pin(led_pin, Pin.OUT)
b = Pin(b_pin, Pin.IN, Pin.PULL_UP)
blynk = BlynkLib.Blynk(TOKEN, insecure=True)

@blynk.on("connected")
def blynk_connected(ping):
    print('Blynk ready. Ping:', ping, 'ms')
    blynk.virtual_write(b_vir, prev_b) # init Button/Label in Blynk

@blynk.on("disconnected")
def blynk_disconnected():
    print('Blynk disconnected')

@blynk.on("V3")               # Handler to process received data from V1
def v3_write_handler(value):
    state = int(value[0])  # convert value to integer
    if state == 1:
        led.value(1)       # Update LED
    else:
        led.value(0)

###   get initial button's values
prev_b = b.value()

while True:
    blynk.run()
    curr_b = b.value()         # get latest switch state
    if curr_b == 0:            # switch is pressed
        led_val = 1            # value to turn on LED
    else:                      # switch is released
        led_val = 0            # value to turn off LED
    #led.value(led_val)
    if curr_b != prev_b:       # if switch state changes
        prev_b = curr_b
        blynk.virtual_write(led_vir, led_val) # update LED in Blynk