#define BLYNK_TEMPLATE_ID "TMPL5FphR5uo1"
#define BLYNK_TEMPLATE_NAME "Smart Gardening System"
//Libraries
#include <DHT.h> // for temperature and humidity sensor
#include <WiFi.h> // for connecting wifi
#include <BlynkSimpleEsp32.h> // for sending data to blynk
#include <ESP32Servo.h> /// for servo motor cutting trees


//PINS
#define DHT_PIN 2
#define DHT_TYPE DHT22
#define LDR_PIN 32
#define POT_PIN 33
#define pump 4
#define cuttingMotor 15
#define lightForPlants 14
const int trigPin = 5;
const int echoPin = 18;
const int servoPin = 19;



DHT dht(DHT_PIN, DHT_TYPE);
#define BLYNK_AUTH_TOKEN "ewgRJye8q0Hi3if8VENJgfPj4m3wKEQC"
#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASS ""



int pos = 0;
int soilMoisture;
int soilMoisturePercentage;
int value = 1;
#define SOUND_SPEED 0.034
#define CM_TO_INCH 0.393701

long duration;
float distanceCm;
float distanceInch;
Servo servo;

void setup() {
  Serial.begin(115200);
  dht.begin();
  WiFi.begin(WIFI_SSID, WIFI_PASS);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }Serial.println("Connected to WiFi!!!");

  
  Blynk.begin(BLYNK_AUTH_TOKEN, WIFI_SSID, WIFI_PASS);
  servo.attach(servoPin, 500, 2400);
  pinMode(pump, OUTPUT);
  pinMode(cuttingMotor, OUTPUT);
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
  pinMode(lightForPlants, OUTPUT);
}

void loop() {
  Blynk.run();

  // Read temperature and humidity from DHT sensor
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Read light intensity from LDR
  int lightIntensity = analogRead(LDR_PIN);
  // Invert the analog reading to represent higher values for higher light intensity
  lightIntensity = 2048 - lightIntensity;
  int lightIntensityPercent = map(lightIntensity, -2016, 2015, 0, 100);
  // Read soil moisture simulation from potentiometer
  soilMoisture = analogRead(POT_PIN);
  soilMoisturePercentage = map(soilMoisture, 0, 2048, 0, 100);  
  Serial.print("Light Intensity: ");
  Serial.println(lightIntensityPercent);
  Serial.println(temperature);
  // Send data to Blynk
  Blynk.virtualWrite(V1, temperature);  
  Blynk.virtualWrite(V2, humidity);     
  Blynk.virtualWrite(V3, lightIntensityPercent);  
  Blynk.virtualWrite(V4, soilMoisturePercentage);   

  if (soilMoisturePercentage < value){
    digitalWrite(pump,HIGH);
   }
   else {
    digitalWrite(pump,LOW);

  
}
  if (lightIntensityPercent < 25){
    digitalWrite(lightForPlants, HIGH);
  }
  else{
    digitalWrite(lightForPlants, LOW);
  }

delay(2000); 
  cuttingTreeFunction();
}

BLYNK_WRITE(V5) {
   value = param.asInt(); // Get the value from the Blynk app
   Serial.println("Received value from Blynk: " + String(value));
   // Do something with the received value
   
   }


void cuttingTreeFunction(){
   // Clears the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  
  // Calculate the distance
  distanceCm = duration * SOUND_SPEED/2;
  
  // Convert to inches
  distanceInch = distanceCm * CM_TO_INCH;
  
  // Prints the distance in the Serial Monitor
  Serial.print("Distance (cm): ");
  Serial.println(distanceCm);
  Serial.print("Distance (inch): ");
  Serial.println(distanceInch);
  if (distanceInch < 50){
     for (pos = 0; pos <= 180; pos += 1) {
    servo.write(pos);
    delay(15);
  }
  for (pos = 180; pos >= 0; pos -= 1) {
    servo.write(pos);
    delay(15);
  }
  }
  else{
    // digitalWrite(cuttingMotor, LOW);
  }

}