#define BLYNK_TEMPLATE_ID "TMPLxxxxx"               // <-- apna Template ID yahan likho
#define BLYNK_TEMPLATE_NAME "Auto Watering System"  // <-- apna Template Name yahan likho
#define BLYNK_AUTH_TOKEN "YourAuthToken"            // <-- apna Auth Token yahan likho

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

char ssid[] = "YourWiFiName";       // <-- WiFi ka naam (SSID)
char pass[] = "YourWiFiPassword";   // <-- WiFi ka password   

#define SOIL_SENSOR_PIN 34
#define RELAY_PIN 25

int moistureLevel = 0;
bool manualControl = false;  // Track manual override

BlynkTimer timer;

// Manual control from Blynk App
BLYNK_WRITE(V0) {
  int value = param.asInt();
  manualControl = true;
  digitalWrite(RELAY_PIN, value);  // HIGH ya LOW
}

// Read soil moisture and auto control relay
void checkSoil() {
  if (manualControl) return;  // Manual mode active, skip auto control

  moistureLevel = analogRead(SOIL_SENSOR_PIN);
  int percentage = map(moistureLevel, 4095, 0, 0, 100);

  Blynk.virtualWrite(V1, percentage);

  if (percentage < 30) {
    digitalWrite(RELAY_PIN, HIGH);  // Relay ON
  } else {
    digitalWrite(RELAY_PIN, LOW);   // Relay OFF
  }
}

void setup() {
  Serial.begin(115200);
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);  // Default OFF

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  timer.setInterval(3000L, checkSoil);
}

void loop() {
  Blynk.run();
  timer.run();
}