import network
import urequests
import time
from machine import Pin, PWM

# --- 1. CONFIGURATION ---
WIFI_SSID = "zaini"
WIFI_PASS = "1234567890"
API_KEY = "YEA4DC3HVUO2DVR3"
URL = "http://api.thingspeak.com/update"

# --- 2. HARDWARE SETUP ---
pir = Pin(16, Pin.IN)
buzzer = PWM(Pin(15))

# Setup 7-segment pins (GPIO 0 to 6)
seg_pins = [Pin(i, Pin.OUT) for i in range(7)] 

# Character Map for Common Cathode (1 = ON, 0 = OFF)
# If your display is Common Anode, the 'not segments[i]' in display_char handles it.
digits = {
    'H': [0, 1, 1, 0, 1, 1, 1],              
    'L': [0, 0, 0, 1, 1, 1, 0]  
}

# --- 3. FUNCTIONS ---
def display_char(char):
    segments = digits.get(char, [0,0,0,0,0,0,0])
    for i in range(7):
        # Using 'not' assumes Common Anode; remove 'not' if Common Cathode
        seg_pins[i].value(not segments[i])

def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(WIFI_SSID, WIFI_PASS)
    print("Connecting to WiFi...", end="")
    
    # Wait for connection with a 10-second timeout
    timeout = 10
    while not wlan.isconnected() and timeout > 0:
        time.sleep(1)
        print(".", end="")
        timeout -= 1
        
    if wlan.isconnected():
        print("\nConnected! IP:", wlan.ifconfig()[0])
    else:
        print("\nWiFi Connection Failed. Running offline mode.")

def send_to_thingspeak(val):
    try:
        # Construct the URL with the motion value (0 or 1)
        request_url = f"{URL}?api_key={API_KEY}&field1={val}"
        response = urequests.get(request_url)
        print(f"Cloud Sync: {response.status_code}")
        response.close()
    except Exception as e:
        print(f"Cloud Sync Error: {e}")

# --- 4. INITIALIZATION ---
print("System Initializing...")
buzzer.duty_u16(0)
display_char('L')
connect_wifi()

# Define last_update BEFORE the loop to prevent NameError
last_update = time.time() 
print("System Active")

# --- 5. MAIN LOOP ---
while True:
    motion_detected = pir.value()
    
    if motion_detected == 1:
        print("Motion!")
        display_char('H')
        buzzer.freq(1000)
        buzzer.duty_u16(32768) # 50% duty cycle
    else:
        display_char('L')
        buzzer.duty_u16(0)
    
    # Update ThingSpeak every 20 seconds
    if (time.time() - last_update) >= 20:
        # Briefly pause buzzer so network request doesn't cause audio glitching
        temp_duty = buzzer.duty_u16()
        buzzer.duty_u16(0)
        
        send_to_thingspeak(motion_detected)
        
        last_update = time.time() # Reset the timer
        buzzer.duty_u16(temp_duty) # Restore buzzer state
    
    time.sleep(0.1)