from machine import Pin, PWM, ADC, I2C, SPI
import time
from i2c_lcd import I2cLcd
from ili9341 import Display, color565
from xglcd_font import XglcdFont
import random

# **Konfigurasi Pin**
led = Pin(2, Pin.OUT)  # LED status sistem
buzzer = PWM(Pin(15), freq=1000, duty=0)  # Buzzer dengan PWM
relay = Pin(4, Pin.OUT)  # Relay untuk kunci pintu
pir = Pin(13, Pin.IN)  # Sensor PIR
switch = Pin(14, Pin.IN)   # switch aktifkan sistem
emergency_button = Pin(32, Pin.IN, Pin.PULL_UP)  # Butang kecemasan (Pin 32)
pot = ADC(Pin(34))  # Potensiometer untuk kawalan
pot.atten(ADC.ATTN_11DB)
servo = PWM(Pin(12), freq=50, duty=0)  # Servo untuk pintuu

# I2C  LCD 
i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400000)
lcd = I2cLcd(i2c, 0x27, 2, 16)

# **SPI untuk LCD ILI9341**
sck = Pin(18)
mosi = Pin(23)
miso = Pin(19)

spi = SPI(1, baudrate=32000000, sck=sck, mosi=mosi, miso=miso)

cs = Pin(5)
dc = Pin(16)
rst = Pin(17)

display = Display(spi, dc=dc, cs=cs, rst=rst)
arcadepix = XglcdFont('ArcadePix9x11.c', 9, 11)

# **Fungsi Menulis Log ke Fail**
def write_log(message):
    with open("log.txt", "a") as f:
        f.write(message + "\n")
    print("Log saved:", message)

# **Fungsi Paparan LCD untuk Status Sistem**
def display_status(message):
    lcd.clear()
    lcd.putstr(message)

# **Fungsi Kawalan Pintu (Relay + Servo)**
def lock_door():
    relay.on()
    servo.duty(40)  # Tutup pintu

def unlock_door():
    relay.off()
    servo.duty(115)  # Buka pintu

# **Fungsi Kawalan Buzzer apabila Intruder dikesan**
def alarm_on():
    # Ambil nilai dari potentiometer dan tukar menjadi duty untuk buzzer
    pot_value = pot.read()  # Baca nilai potensiometer
    duty = int((pot_value / 4095) * 1023)  # Tukar nilai ADC ke duty (0-1023)
    buzzer.duty(duty)  # Setkan duty cycle buzzer

def alarm_off():
    buzzer.duty(0)  # Matikan buzzer

# **Fungsi Paparan ILI9341**
def display_armed():
    display.fill_rectangle(0, 0, 240, 320, color565(0, 0, 0))  # Kosongkan skrin (hitam)
    display.fill_rectangle(85, 135, 70, 70, color565(0, 255, 0))  # Kotak hijau sebagai indikator "Armed"

def display_intruder():
    display.fill_rectangle(0, 0, 240, 320, color565(0, 0, 0))  # Kosongkan skrin (hitam)
    display.fill_rectangle(85, 135, 70, 70, color565(255, 0, 0))  # Kotak merah sebagai indikator "Intruder"
    display.draw_text(110, 160, "X", arcadepix, color565(255, 255, 255))  # Huruf "X" putih

# Fungsi untuk mematikan sistem
def disarm_system(pin):
    global system_armed
    system_armed = False
    led.off()
    unlock_door()
    alarm_off()  # Matikan buzzer apabila sistem dimatikan
    display_status("Disarmed")
    write_log("System Disarmed")
    display_armed()  # Ubah paparan ILI9341 kembali kepada hijau

# **Interrupt untuk butang kecemasan**
emergency_button.irq(trigger=Pin.IRQ_FALLING, handler=disarm_system)

system_armed = False  # Status sistem

display_status("Slide Switch to Arm")
write_log("Waiting...")

# **Variabel untuk menjejaki jika buzzer sudah berbunyi**
buzzer_activated = False

# slide switch
prev_switch_state = switch.value()


while True:
    current_switch_state = switch.value()  # Read the current state of the switch

    # Check if the switch state has changed
    if current_switch_state != prev_switch_state:
        prev_switch_state = current_switch_state  # Update the previous state

        if current_switch_state == 1:  # Switch is turned ON
            if not system_armed:
                system_armed = True
                led.on()
                display_status("ARMED")
                write_log("System Armed")
                display_armed()
                time.sleep(1)
            else:
                # If system is already armed, disarm it
                system_armed = False
                led.off()
                unlock_door()
                alarm_off()  # Turn off buzzer when disarmed
                display_status("Disarmed")
                write_log("System Disarmed")
                display_armed()  # Change ILI9341 display back to green
                time.sleep(1)

    # Check for intruder detection only when system is armed
    if system_armed:
        if pir.value():  # If PIR sensor detects movement
            if not buzzer_activated:  # Ensure the buzzer only activates once
                display_status("Intruder Detected")
                alarm_on()  # Activate buzzer with volume based on potentiometer
                lock_door()  # Lock the door
                display_intruder()  # Display intruder alert
                buzzer_activated = True  # Mark buzzer as activated
        else:
            alarm_off()  # Turn off buzzer if no intruder
            buzzer_activated = False  # Reset buzzer for next detection

    time.sleep(0.1)