#include <Wire.h>
#include <MPU6050.h>

MPU6050 mpu;

const int FAN_LED   = 2;
const int LIGHT_LED = 4;
const int DOOR_LED  = 5;
const int BUZZER    = 18;

int16_t ax, ay, az;
bool fanOn    = false;
bool lightOn  = false;
bool doorOn   = false;
bool buzzerOn = false;

void setup() {
  Serial.begin(115200);
  Wire.begin(21, 22);

  pinMode(FAN_LED,   OUTPUT);
  pinMode(LIGHT_LED, OUTPUT);
  pinMode(DOOR_LED,  OUTPUT);
  pinMode(BUZZER,    OUTPUT);

  mpu.initialize();

  if (mpu.testConnection()) {
    Serial.println("STATUS:CONNECTED");
  } else {
    Serial.println("STATUS:FAILED");
    while (1);
  }
}

void loop() {
  mpu.getAcceleration(&ax, &ay, &az);

  // Fan control (Left / Right tilt)
  if (ax < -10000) {
    fanOn = true;
    digitalWrite(FAN_LED, HIGH);
  } else if (ax > 10000) {
    fanOn = false;
    digitalWrite(FAN_LED, LOW);
  }

  // Light control (Up / Down tilt)
  if (ay > 12000) {
    lightOn = true;
    digitalWrite(LIGHT_LED, HIGH);
  } else if (ay < -12000) {
    lightOn = false;
    digitalWrite(LIGHT_LED, LOW);
  }

  // Door: stable flat detection
  doorOn = (abs(ax) < 1000 && abs(ay) < 1000 && abs(az - 16384) < 1000);
  digitalWrite(DOOR_LED, doorOn ? HIGH : LOW);

  // Shake detection → buzzer
  buzzerOn = (abs(ax) > 15000 || abs(ay) > 15000 || abs(az - 16384) > 8000);
  digitalWrite(BUZZER, buzzerOn ? HIGH : LOW);

  // Send compact CSV line: DATA:ax,ay,az,fan,light,door,buzzer
  Serial.print("DATA:");
  Serial.print(ax);    Serial.print(",");
  Serial.print(ay);    Serial.print(",");
  Serial.print(az);    Serial.print(",");
  Serial.print(fanOn    ? 1 : 0); Serial.print(",");
  Serial.print(lightOn  ? 1 : 0); Serial.print(",");
  Serial.print(doorOn   ? 1 : 0); Serial.print(",");
  Serial.println(buzzerOn ? 1 : 0);

  delay(100);
}