#include "Secrets.h"
#include <LiquidCrystal_I2C.h>
#include <Wire.h> 

#include <ArduinoJson.h>
#include "Publish.h"
 
#include "DHT.h"
#define DHTPIN 12     // Digital pin connected to the DHT sensor
#define RELAY_PIN 15            // Define the pin where the LED is connected

#define DHTTYPE DHT22   // DHT 22
#define ARRAY_SIZE 10        // Number of readings to store
String readings[ARRAY_SIZE];    // Array to store the readings
int id = 0;               // Index to manage the current reading position

 
float h ;
float t;
// String  device_id ="device_id"; 
LiquidCrystal_I2C lcd(0x27,12,3);

DHT dht(DHTPIN, DHTTYPE);
 
void initArray(){
    for (int i = 0; i < ARRAY_SIZE; i++) {
    readings[i] = "";      // Initialize the array with the maximum value (sensor dependent)
  }

}
 
bool checkAllDry() {
  for (int i = 0; i < ARRAY_SIZE; i++) {
    if (readings[i] != "DRY") {  // Check if the reading is not DRY
      return false;  // If any reading is not dry, return false
    }
  }
  return true;  // All readings are dry
}

void updateReadings(String newReading) {
  readings[id] = newReading;  // Store new reading
  id = (id + 1) % ARRAY_SIZE;  // Update index to rotate in a FIFO manner
}

void setup()
{
  Wire.begin(22, 21); // Initialize the I2C communication with SDA pin 23 and SCL pin 22.
  Serial.begin(9600); /// Initialize the serial communication at a baud rate of 9600 bits per second.
  lcd.init();       // initialize the lcd 
  lcd.backlight();    // turn on the backlight

  randomSeed(analogRead(0));
  Serial.begin(115200);
  connectAWS();
  dht.begin();
  pinMode(RELAY_PIN, OUTPUT);
  
}
 
void loop()
{
  // int rndNb = random(1, 5);
  // String str = "Device_" + String(rndNb);

  h = dht.readHumidity();
  t = dht.readTemperature();
  // device_id = str; 
  int16_t moist = analogRead(34);
  String MoistureState = moist < 370 ? "WET" : moist > 600 ? "DRY" : "Hmd";

  updateReadings(MoistureState); 

  if (id % ARRAY_SIZE == 0) {
    if (checkAllDry()) {
      Serial.println("All of the last 10 values are dry!");
      digitalWrite(RELAY_PIN, HIGH); // Turn LED ON if all values are dry
    } else {
      Serial.println("Not all of the last 10 values are dry.");
      digitalWrite(RELAY_PIN, LOW); // Turn LED OFF if not all values are dry
    }
  } 

  lcd.clear();
  lcd.print("Moist:");
  lcd.print(moist, 1);                // Print Moisture with one decimal;

  lcd.print(": ");
  lcd.print(MoistureState);
 
 
  // if (isnan(h) || isnan(t) )  // Check if any reads failed and exit early (to try again).
  // {
  //   Serial.println(F("Failed to read from DHT sensor!"));
  //   return;
  // }

  lcd.setCursor(0, 1);  // Set cursor to the first column and second row
  lcd.print("T:");                  // Print "T:" (Temperature)
  lcd.print(t);               // Print temperature with one decimal
  lcd.print(" H:");                 // Print " H:" (Humidity)
  lcd.print(h);                // Print humidity with one decimal;
 
 
  char msg[100];
  snprintf(msg, 100, "{\"temperature\": %.2f, \"humidity\": %.2f, \"Moisture\": %d ,  \"MoistureState\": \"%s\" }", t, h, moist, MoistureState);
  client.publish(AWS_IOT_PUBLISH_TOPIC, msg);

  client.loop();
  delay(3000);
}