# Smart Temperature Monitor with AI Prediction
import machine
import time
import math
from machine import Pin, ADC, PWM

class SmartTempMonitor:
    def __init__(self):
        print("🌡️ เริ่มต้น Smart Temperature Monitor")
        
        # Hardware setup
        self.temp_sensor = ADC(4)  # Internal temp sensor
        self.led_red = Pin(15, Pin.OUT)
        self.led_green = Pin(14, Pin.OUT)
        self.buzzer = PWM(Pin(16))
        
        # Data storage
        self.temp_history = []
        self.alert_threshold = 30.0  # Celsius
        
    def read_temperature(self):
        """อ่านอุณหภูมิจาก Internal Sensor"""
        adc_value = self.temp_sensor.read_u16()
        voltage = adc_value * 3.3 / 65535
        temperature = 27 - (voltage - 0.706) / 0.001721
        return temperature
    
    def update_led_status(self, temperature):
        """อัพเดท LED ตามสถานะอุณหภูมิ"""
        if temperature < 25:
            self.led_green.on()
            self.led_red.off()
        else:
            self.led_red.on()
            self.led_green.off()
            if temperature > self.alert_threshold:
                self.sound_alert()
    
    def sound_alert(self):
        """เสียงแจ้งเตือนเมื่ออุณหภูมิสูง"""
        self.buzzer.freq(1000)
        self.buzzer.duty_u16(32768)
        time.sleep(0.1)
        self.buzzer.duty_u16(0)
    
    def predict_temperature(self):
        """ทำนายอุณหภูมิด้วย AI แบบง่าย"""
        if len(self.temp_history) < 5:
            return self.temp_history[-1] if self.temp_history else 25.0
        
        # Simple linear prediction
        recent = self.temp_history[-5:]
        trend = (recent[-1] - recent[0]) / 4
        prediction = recent[-1] + trend
        
        return max(0, min(60, prediction))
    
    def run(self):
        """เริ่มการทำงานหลัก"""
        print("🚀 Starting temperature monitoring...")
        
        while True:
            try:
                # Read temperature
                temp = self.read_temperature()
                self.temp_history.append(temp)
                
                # Keep only recent 100 readings
                if len(self.temp_history) > 100:
                    self.temp_history.pop(0)
                
                # Update LED
                self.update_led_status(temp)
                
                # Predict next temperature
                prediction = self.predict_temperature()
                
                # Display results
                print(f"🌡️ Current: {temp:.1f}°C | Predicted: {prediction:.1f}°C")
                
                time.sleep(1)
                
            except KeyboardInterrupt:
                print("\n⏹️ Monitoring stopped")
                break
            except Exception as e:
                print(f"❌ Error: {e}")
                time.sleep(1)

# การใช้งาน
monitor = SmartTempMonitor()
monitor.run()