int fanPin = D2;

void setup() {
    // Register the fan control function with Particle
    Particle.function("fanControl", fanControl);
    
    // Initialize the fan pin
    pinMode(fanPin, OUTPUT);
    digitalWrite(fanPin, LOW);
}

void loop() {
    // The loop remains empty as the fan control is handled by the Particle function
}

// Fan control function with time and cycle count
int fanControl(String command) {
    // Example command format: "10,3" for 10 seconds and 3 cycles
    int commaIndex = command.indexOf(',');
    if (commaIndex == -1) {
        return -1; // Error in command format
    }

    // Extract time and cycle count from command
    int time = command.substring(0, commaIndex).toInt();
    int cycles = command.substring(commaIndex + 1).toInt();

    if (time > 0 && cycles > 0) {
        for (int i = 0; i < cycles; i++) {
            // Turn the fan on
            analogWrite(fanPin, 255);

            // Keep the fan on for the specified time
            delay(time * 1000); 

            // Turn the fan off
            analogWrite(fanPin, 0);

            // Wait before the next cycle
            delay((6 - time)*1000);
        }
    } else {
        return -1; // Invalid time or cycle count
    }

    return 1; // Return a success status
}