#define BLYNK_TEMPLATE_ID "YourTemplateID"
#define BLYNK_DEVICE_NAME "YourDeviceName"
#define BLYNK_AUTH_TOKEN "YourAuthToken"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>
#include <OneButton.h>
#include <U8g2lib.h>

// Pin Definitions
#define DHTPIN 32         // Pin for DHT22
#define DHTTYPE DHT22     // DHT 22 (AM2302)
#define LDRPIN 33         // Pin for LDR
#define SOILMOISTUREPIN 27 // Pin for Soil Moisture
#define PIN_PUMP 16       // Pin for Pump
#define BUTTON_PIN 19     // Pin for Button

// Initialize DHT sensor
DHT dht(DHTPIN, DHTTYPE);

// Initialize Button
OneButton button(BUTTON_PIN, true);

// Initialize OLED display (I2C)
U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);

// Blynk credentials
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "YourSSID";
char pass[] = "YourPassword";

// Variables to hold sensor data
float temperature;
float humidity;
int soilMoisture;
int lightIntensity;

// Threshold for soil moisture
const int moistureThreshold = 300; // Adjust this value based on your sensor calibration

// Function to read sensor data
void readSensors() {
  temperature = dht.readTemperature();
  humidity = dht.readHumidity();
  soilMoisture = analogRead(SOILMOISTUREPIN);
  lightIntensity = analogRead(LDRPIN);

  // Send data to Blynk
  Blynk.virtualWrite(V1, temperature);
  Blynk.virtualWrite(V2, humidity);
  Blynk.virtualWrite(V3, soilMoisture);
  Blynk.virtualWrite(V4, lightIntensity);

  // Control the pump based on soil moisture
  if (soilMoisture < moistureThreshold) {
    digitalWrite(PIN_PUMP, HIGH); // Turn on the pump
  } else {
    digitalWrite(PIN_PUMP, LOW);  // Turn off the pump
  }
}

// Function to display data on OLED
void displayData() {
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_ncenB08_tr);
  u8g2.drawStr(0, 10, "Temp:");
  u8g2.setCursor(50, 10);
  u8g2.print(temperature);
  u8g2.print(" C");

  u8g2.drawStr(0, 25, "Humidity:");
  u8g2.setCursor(70, 25);
  u8g2.print(humidity);
  u8g2.print(" %");

  u8g2.drawStr(0, 40, "Soil:");
  u8g2.setCursor(50, 40);
  u8g2.print(soilMoisture);
  u8g2.print(" %");

  u8g2.drawStr(0, 55, "Light:");
  u8g2.setCursor(50, 55);
  u8g2.print(lightIntensity);
  u8g2.print(" lx");

  u8g2.sendBuffer();
}

// Function to be called when button is long pressed
void onLongPress() {
  displayData();
}

void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);

  // Initialize Blynk
  Blynk.begin(auth, ssid, pass);

  // Initialize DHT sensor
  dht.begin();

  // Initialize OLED display
  u8g2.begin();

  // Initialize Button
  button.attachLongPressStart(onLongPress);

  // Set pump pin as output
  pinMode(PIN_PUMP, OUTPUT);
  digitalWrite(PIN_PUMP, LOW); // Ensure pump is off initially

  // Read initial sensor data
  readSensors();
}

void loop() {
  Blynk.run();
  button.tick();

  // Periodically read sensor data
  static unsigned long lastReadTime = 0;
  if (millis() - lastReadTime > 5000) { // Read every 5 seconds
    readSensors();
    lastReadTime = millis();
  }
}