#include <Wire.h>
#include <>

LiquidCrystal_I2C lcd(0x27, 16, 2);

#define LED_PIN 13
#define BUTTON_PIN 5

const int PM25_THRESHOLD = 50; // Adjust this threshold as needed

int pm25Values[10];
int pm25Index = 0;

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  lcd.init();
  lcd.backlight();
}

void loop() {
  if (readPMSdata()) {
    int pm25Value = 25; // Simulated PM2.5 value (for demonstration purposes)
    pm25Values[pm25Index] = pm25Value;
    pm25Index = (pm25Index + 1) % 10;

    int minPM25 = getMinValue(pm25Values, 10);
    int maxPM25 = getMaxValue(pm25Values, 10);
    int avgPM25 = getAverageValue(pm25Values, 10);

    displayPM25Stats(minPM25, maxPM25, avgPM25);

    adjustLED(pm25Value);
    if (pm25Value > PM25_THRESHOLD) {
      activateLED();
    }

    if (digitalRead(BUTTON_PIN) == LOW) {
      // No fan or motor in the simulator, no action needed for the button press
      delay(500); // Debounce delay
    }
  }
}

boolean readPMSdata() {
  // Simulated readPMSdata function for receiving PM2.5 data (for demonstration purposes)
  return true; // Simulated data successfully read
}

int getMinValue(int arr[], int size) {
  int minVal = arr[0];
  for (int i = 1; i < size; ++i) {
    if (arr[i] < minVal) {
      minVal = arr[i];
    }
  }
  return minVal;
}

int getMaxValue(int arr[], int size) {
  int maxVal = arr[0];
  for (int i = 1; i < size; ++i) {
    if (arr[i] > maxVal) {
      maxVal = arr[i];
    }
  }
  return maxVal;
}

int getAverageValue(int arr[], int size) {
  int sum = 0;
  for (int i = 0; i < size; ++i) {
    sum += arr[i];
  }
  return sum / size;
}

void displayPM25Stats(int min, int max, int avg) {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Min: ");
  lcd.print(min);
  lcd.print(" Max: ");
  lcd.print(max);
  lcd.setCursor(0, 1);
  lcd.print("Avg: ");
  lcd.print(avg);
}

void adjustLED(int pm25Value) {
  int brightness = map(pm25Value, 0, 1000, 0, 255);
  analogWrite(LED_PIN, brightness);
}

void activateLED() {
  digitalWrite(LED_PIN, HIGH);
  delay(5000); // Simulated LED activation for 5 seconds
  digitalWrite(LED_PIN, LOW);
}