#include <LiquidCrystal.h>

#define TRIGGER_PIN 3    // Ultrasonic Sensor trigger pin (D3)
#define ECHO_PIN 2       // Ultrasonic Sensor echo pin (D2)
#define DHT_PIN 4        // DHT22 Sensor signal pin (D4)
#define BUZZER_PIN 6     // Buzzer pin (D6)
#define LED1_PIN 8       // LED1 pin (D8)
#define LED2_PIN 9       // LED2 pin (D9)
#define LED3_PIN 10      // LED3 pin (D10)
#define WATER_QUALITY_PIN A0 // Water quality sensor analog pin

#define MIN_DISTANCE 5   // Minimum distance for simulation (in cm)
#define MAX_DISTANCE 50  // Maximum distance for simulation (in cm)
#define TEMPERATURE_THRESHOLD 50 // Temperature threshold
#define HUMIDITY_THRESHOLD 70    // Humidity threshold
#define WATER_QUALITY_THRESHOLD 50 // Water quality threshold

LiquidCrystal lcd(12, 11, 5, 4, 3, 2); // LCD pins: RS, EN, D4, D5, D6, D7

unsigned long previousMillis = 0;
const long interval = 1000; // Interval in milliseconds

void setup() {
  pinMode(TRIGGER_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(LED1_PIN, OUTPUT);
  pinMode(LED2_PIN, OUTPUT);
  pinMode(LED3_PIN, OUTPUT);
  Serial.begin(9600);
  lcd.begin(16, 2); // Initialize the LCD with 16 columns and 2 rows
}

void loop() {
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;

    // Simulate distance measurement
    int distance = random(MIN_DISTANCE, MAX_DISTANCE + 1); // Random distance between MIN_DISTANCE and MAX_DISTANCE cm
    int distanceNormalized = map(distance, MIN_DISTANCE, MAX_DISTANCE, 0, 100); // Scale distance to be between 0 and 100

    // Simulate temperature and humidity
    float temperature = random(TEMPERATURE_THRESHOLD - 10, TEMPERATURE_THRESHOLD + 10); // Random temperature near TEMPERATURE_THRESHOLD
    int temperatureNormalized = map(temperature, TEMPERATURE_THRESHOLD - 10, TEMPERATURE_THRESHOLD + 10, 0, 100); // Scale temperature to be between 0 and 100

    float humidity = random(HUMIDITY_THRESHOLD - 10, HUMIDITY_THRESHOLD + 10); // Random humidity near HUMIDITY_THRESHOLD
    int humidityNormalized = map(humidity, HUMIDITY_THRESHOLD - 10, HUMIDITY_THRESHOLD + 10, 0, 100); // Scale humidity to be between 0 and 100

    // Simulate water quality value
    int waterQualityValue = random(WATER_QUALITY_THRESHOLD - 10, WATER_QUALITY_THRESHOLD + 10); // Random water quality value near WATER_QUALITY_THRESHOLD
    int waterQualityNormalized = map(waterQualityValue, WATER_QUALITY_THRESHOLD - 10, WATER_QUALITY_THRESHOLD + 10, 0, 100); // Scale water quality to be between 0 and 100

    // Check water level
    if (distance >= MIN_DISTANCE && distance <= MAX_DISTANCE) {
      digitalWrite(LED1_PIN, HIGH); // Turn on LED1
      digitalWrite(BUZZER_PIN, LOW); // Turn off buzzer
    } else {
      digitalWrite(LED1_PIN, LOW); // Turn off LED1
      digitalWrite(BUZZER_PIN, HIGH); // Turn on buzzer
    }

    // Check temperature
    if (temperatureNormalized >= TEMPERATURE_THRESHOLD) {
      digitalWrite(LED2_PIN, HIGH); // Turn on LED2
    } else {
      digitalWrite(LED2_PIN, LOW); // Turn off LED2
    }

    // Check humidity
    if (humidityNormalized >= HUMIDITY_THRESHOLD) {
      digitalWrite(LED3_PIN, HIGH); // Turn on LED3
    } else {
      digitalWrite(LED3_PIN, LOW); // Turn off LED3
    }

    // Check water quality
    if (waterQualityNormalized >= WATER_QUALITY_THRESHOLD) {
      Serial.println("Water quality is good");
      // Add corresponding actions here
    } else {
      Serial.println("Water quality is poor");
      // Add corresponding actions here
    }

    // Print simulated readings to LCD
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Water Level: ");
    lcd.print(distanceNormalized);
    lcd.print(" %");

    lcd.setCursor(0, 1);
    lcd.print("Humidity: ");
    lcd.print(humidityNormalized);
    lcd.print(" %");
  }
  delay(100); // Delay to stabilize the loop
}