#define BLYNK_TEMPLATE_ID "TMPL3a10pG72j"
#define BLYNK_TEMPLATE_NAME "smart soil monitoring system"
#define BLYNK_AUTH_TOKEN "VxrC6GcoMbmU-xzyJSoyEwobSFyogfEb"

#include <WiFi.h>
#include <DHT.h>
#include <BlynkSimpleEsp32.h>

// Replace with your network credentials
const char* ssid = "YOUR_SSID";
const char* password = "YOUR_PASSWORD";

#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

#define SOIL_MOISTURE_PIN 34
#define PH_SENSOR_PIN 35
#define RELAY_PIN 5

void setup() {
  Serial.begin(115200);
  dht.begin();
  pinMode(SOIL_MOISTURE_PIN, INPUT);
  pinMode(PH_SENSOR_PIN, INPUT);
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  int soilMoisture = analogRead(SOIL_MOISTURE_PIN);
  int phValue = analogRead(PH_SENSOR_PIN);

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C, Humidity: ");
  Serial.print(humidity);
  Serial.print(" %, Soil Moisture: ");
  Serial.print(soilMoisture);
  Serial.print(", pH Value: ");
  Serial.println(phValue);

  // Simple logic to control the water pump
  if (soilMoisture < 1000) {
    digitalWrite(RELAY_PIN, HIGH); // Turn on the pump
    Serial.println("Pump ON");
  } else {
    digitalWrite(RELAY_PIN, LOW); // Turn off the pump
    Serial.println("Pump OFF");
  }

  delay(2000); // Delay for 2 seconds
}