#include <OneWire.h>
#include <DallasTemperature.h>
#include <Servo.h>
#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

const int raindropPin = A0;       // Analog pin for the simulated raindrop sensor
const int dhtPin = 2;             // Digital pin for the DHT22 sensor
const int servoPin = 3;           // Digital pin for the servo motor
const int lcdColumns = 20;        // Number of columns in your LCD
const int lcdRows = 4;            // Number of rows in your LCD

Servo umbrellaServo;              // Create a servo object for the umbrella
DHT dht(dhtPin, DHT22);           // Create a DHT object for the DHT22 sensor
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);  // Change the address if needed

const int rainThreshold = 400;    // Adjust the rain threshold based on your observation
const int temperatureThreshold = 30;  // Adjust the temperature threshold based on your needs

bool isUmbrellaOpen = false;

void setup() {
    Serial.begin(9600);
    umbrellaServo.attach(servoPin);  // Attach the servo motor to the specified pin
    dht.begin();  // Initialize the DHT22 sensor
    lcd.begin(lcdColumns, lcdRows);  // Initialize the LCD screen
    lcd.print("Welcome to the Smart umbrella System  ");
    delay(2000);
    lcd.clear();
}

void loop() {
    int raindropValue = analogRead(raindropPin);
    
    float humidity = dht.readHumidity();
    float temperatureC = dht.readTemperature();

    lcd.setCursor(0, 0);
    lcd.print("Raindrop: ");
    if (raindropValue < rainThreshold){
      lcd.print("Yes");

    }
    else {lcd.print("No");}

    lcd.setCursor(0, 1);
    lcd.print("Temp:");
    lcd.print(temperatureC);
    lcd.print(" C");

    Serial.print("Raindrop: ");
    Serial.println(raindropValue);

    Serial.print("Temperature: ");
    Serial.print(temperatureC);
    Serial.println("°C");

    Serial.print("Humidity: ");
    Serial.print(humidity);
    Serial.println("%");

    if ((raindropValue < rainThreshold || temperatureC > temperatureThreshold) && !isUmbrellaOpen) {
        Serial.println("Opening the umbrella!");
        openUmbrella();
        lcd.setCursor(0, 1);
        lcd.print("Umbrella: Open ");
    } else if (raindropValue >= rainThreshold && temperatureC <= temperatureThreshold && isUmbrellaOpen) {
        Serial.println("Closing the umbrella!");
        closeUmbrella();
        lcd.setCursor(0, 1);
        lcd.print("Umbrella: Closed");
    }

    delay(1000); // Adjust delay based on your needs
}

void openUmbrella() {
    // Simulate the umbrella opening
    umbrellaServo.write(180);  // Turn the servo to 180 degrees (clockwise)
    delay(1000);
    isUmbrellaOpen = true;
}

void closeUmbrella() {
    // Simulate the umbrella closing
    umbrellaServo.write(0);    // Turn the servo to 0 degrees (counter-clockwise)
    delay(1000);
    isUmbrellaOpen = false;
}