from machine import Pin, ADC
import time
try:
    from ulab import numpy as np
except ImportError:
    class DummyNP:
        def array(self, data): return data
        def dot(self, a, b): 
            return sum(i * j for i, j in zip(a, b))
    np = DummyNP()


def light_control(sensor_input):
    W = np.array([1, 1]) 
    B = -1.5 
    
    A = np.dot(sensor_input, W) + B
    
    return 1 if A > 0 else 0

pir = Pin(13, Pin.IN)        
ldr = ADC(Pin(34))            
ldr.atten(ADC.ATTN_11DB)       
led = Pin(4, Pin.OUT)          

print("--- AI Light Control System Ready ---")
print("เงื่อนไข: ไฟจะติดเมื่อ (มีคน=1 AND มืด=1)")


while True:
    has_person = pir.value() 
    
    current_light = ldr.read()
    is_dark = 1 if current_light > 2000 else 0
    
    X_input = np.array([has_person, is_dark])
    
    status = light_control(X_input)
    
    led.value(status)
    
    print(f"LDR Raw: {current_light:4} | Matrix: {X_input} -> ไฟ: {'[เปิด]' if status else '[ปิด]'}")
    
    time.sleep(0.5)