// #include <Wire.h> 
// #include <LiquidCrystal_I2C.h>
// LiquidCrystal_I2C lcd(0x27,16,2);

// void setup()
// {
//   Wire.begin(23, 22);
//   Serial.begin(9600);
//   lcd.init();
//   lcd.backlight();
// }

// void loop()
// {
//   int16_t i = analogRead(34);
//   String msg = i < 2165 ? "WET" : i > 3135 ? "DRY" : "OK";
//   lcd.clear();
//   lcd.print("Soil: ");
//   lcd.print(msg);
//   delay(500); 
// }


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

using namespace ace_button;
Preferences pref;

#define DHTPIN            23 //D23 pin connected with DHT
#define DHTTYPE DHT22     // DHT 22, AM2302, AM2321

#define RAIN_ANALOG 27
#define RAIN_DIGITAL 15 // D26 pin connected with Rain Sensor
#define SOIL_MOISTURE_PIN 34 // D27 pin connected with Soil Moisture Sensor

#define RELAY_PIN         18 // D18 pin connected with Relay

#define wifiLed   2   // D2

#define VPIN_Text           V0
#define VPIN_RainSensor     V1
#define VPIN_SoilMoisture   V2
#define VPIN_TempHumidity    V3
#define VPIN_Button         V4

DHT dht(DHTPIN, DHTTYPE);
AceButton button(&config);

bool relayState = LOW; //Define integer to remember the toggle state for relay

char auth[] = "YourAuthToken";

void buttonEventHandler(AceButton*, uint8_t, uint8_t);

void setup() {
  Serial.begin(115200);
  pref.begin("Relay_State", false);

  pinMode(RELAY_PIN, OUTPUT);
  pinMode(RAIN_SENSOR_PIN, INPUT);
  pinMode(SOIL_MOISTURE_PIN, INPUT);
  pinMode(wifiLed, OUTPUT);

  dht.begin();
  
  config.setEventHandler(buttonEventHandler);
  button.init(VPIN_Button);

  Blynk.begin(auth, "YourWiFiSSID", "YourWiFiPassword");
}

void readSensors() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  float rainDetected = analogRead(RAIN_SENSOR_PIN);

  Serial.println(analogRead(RAIN_ANALOG));
  if (digitalRead(RAIN_DIGITAL))
    Serial.println("It's raining!");
    
  int soilMoistureDetected = analogRead(SOIL_MOISTURE_PIN);

  Blynk.virtualWrite(VPIN_TempHumidity, temperature);
  Blynk.virtualWrite(VPIN_RainSensor, rainDetected);
  Blynk.virtualWrite(VPIN_SoilMoisture, soilMoistureDetected);

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

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

  Serial.print("Rain Sensor: ");
  Serial.println(rainDetected);

  Serial.print("Soil Moisture: ");
  Serial.println(soilMoistureDetected);

}

void sendSensorData() {
  readSensors();
}

void checkBlynkStatus() {
  bool isconnected = Blynk.connected();
  if (!isconnected) {
    Serial.println("Blynk Not Connected");
    digitalWrite(wifiLed, LOW);
  } else {
    Serial.println("Blynk Connected");
    digitalWrite(wifiLed, HIGH);
  }
}

BLYNK_CONNECTED() {
  Blynk.syncAll();
}

BLYNK_WRITE(VPIN_Button) {
  if (param.asInt() == 1) {
    relayState = !relayState;
    digitalWrite(RELAY_PIN, relayState);
    pref.putBool("RelayState", relayState);
    Blynk.virtualWrite(VPIN_Button, relayState);
  }
}

void loop() {
  Blynk.run();
  button.check();
  sendSensorData();
  checkBlynkStatus();
  delay(1000);
}