from machine import Pin, ADC
from time import sleep
import network
import urequests

# ================== WIFI (REAL PICO WH) ==================
SSID = "iPhone"        # Replace with your hotspot SSID
PASSWORD = "faris123"  # Replace with your hotspot password

wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(SSID, PASSWORD)

print("Connecting to WiFi...")
while not wlan.isconnected():
    sleep(1)

print("WiFi Connected:", wlan.ifconfig())

# ================== THINGSPEAK ==================
WRITE_API_KEY = "MNX6JFE1DJ7IGRT8"
THINGSPEAK_URL = "https://api.thingspeak.com/update"

# ================== HARDWARE ==================
led_pins = [2,3,4,5,6,7,8,9,10,11]
leds = [Pin(p, Pin.OUT) for p in led_pins]

ldr = ADC(26)  # GPIO26 / ADC0

# ================== MAP LDR VALUE TO LED COUNT ==================
def map_ldr_to_leds(value):
    """
    Convert ADC value (0-65535) to LED count (0-10)
    Darker -> more LEDs ON
    """
    inverted = 65535 - value
    # smoother mapping, avoid rounding problems
    led_count = int((inverted / 65535) * 11)
    return max(0, min(11, led_count))

# ================== SEND DATA TO THINGSPEAK ==================
def send_to_thingspeak(ldr_value, led_count):
    url = f"{THINGSPEAK_URL}?api_key={WRITE_API_KEY}&field1={ldr_value}&field2={led_count}"
    try:
        r = urequests.get(url)
        r.close()
    except:
        print("Failed to send data to ThingSpeak")

# ================== MAIN LOOP ==================
while True:
    # Read LDR
    ldr_value = ldr.read_u16()
    led_count = map_ldr_to_leds(ldr_value)

    # Update LEDs immediately
    for i in range(10):
        leds[i].value(i < led_count)

    # Debug print
    print("Raw LDR:", ldr_value, "LEDs ON:", led_count)

    # Send to ThingSpeak every 15s
    send_to_thingspeak(ldr_value, led_count)

    sleep(5)