#if defined(ESP8266)
#include <ESP8266WiFi.h>
#elif defined(ESP32)
#include <WiFi.h>
#endif

#include<stdio.h>
//LCD I2C library:
#include <LiquidCrystal_I2C.h>
//DHT22 sensor library:
#include "DHTesp.h"
#include "ThingsBoard.h"

#define CURRENT_FIRMWARE_TITLE    "TEST"
#define CURRENT_FIRMWARE_VERSION   "1.0.0"

#define WIFI_SSID           "Wokwi-GUEST"
#define WIFI_PASSWORD       ""

#define TOKEN "yDnmV9K9MXITKkoVb9zq"
#define THINGSBOARD_SERVER  "thingsboard.cloud"

//LCD I2C address 0x27, 20 column and 4 rows!
LiquidCrystal_I2C lcd(0x27, 16, 2);

//Variables:
#define SERIAL_DEBUG_BAUD   115200
const int DHT_PIN = 15;
DHTesp dhtSensor; 
int buzzer = 13;

// Initialize ThingsBoard client
WiFiClient espClient;
// Initialize ThingsBoard instance
ThingsBoard tb(espClient);
// the Wifi radio's status
int status = WL_IDLE_STATUS;

void InitWiFi()
{
  Serial.println("Connecting to AP ...");
  // attempt to connect to WiFi network

  WiFi.begin(WIFI_SSID,  WIFI_PASSWORD);
  while (WiFi.status()  != WL_CONNECTED) {

    delay(500);
    Serial.print(".");
  }
  Serial.println("Connected to AP");
}

void reconnect() {
  // Loop until we're reconnected
  status = WiFi.status();
  if ( status != WL_CONNECTED)  {
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    while (WiFi.status()  != WL_CONNECTED) {
      delay(500);
      Serial.print(",");
    }
    Serial.println("Connected to AP");
  }
}

void setup(){
  //Initialize LCD, DHT22 sensor and buzzer:
  lcd.init(); lcd.backlight();
  //Serial Communication is starting with 9600 of baudrate speed
  Serial.begin(SERIAL_DEBUG_BAUD);
  Serial.println("Alat Pengukur Suhu dan Kelembapan Udara pada Laboratorium");
  InitWiFi();
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(13, OUTPUT); pinMode(buzzer, OUTPUT);
  pinMode(26, OUTPUT); pinMode(27, OUTPUT); pinMode(14, OUTPUT);
}

void loop(){
  
  //Read data and store it to variables hum and temp

  TempAndHumidity   data = dhtSensor.getTempAndHumidity();
    tb.sendTelemetryInt("temperature", data.temperature);
    tb.sendTelemetryFloat("humidity", data.humidity);
  
  
  //Print temp and humidity values to serial monitor
    Serial.print("Suhu : ");
    Serial.print(data.temperature);
    Serial.println(" °C.");
    Serial.print("Kelembaban : ");
    Serial.println(data.humidity);
    delay(2000);
  
  /*If humidity is higher than 70% & 
  temperature is higher than 30 degrees Celsius 
  then it will show on LCD „Too warm! Cool down!”*/
  if(data.humidity >= 70.00 && data.temperature >= 30.00){
   digitalWrite(26, HIGH);
   digitalWrite(27, LOW);
   digitalWrite(14, LOW);
   
   lcd.println("   Too warm!    ");
   lcd.setCursor(0, 1);
   lcd.println("   Cool down!   ");
   lcd.setCursor(0, 0);
   
   digitalWrite(buzzer, 1); tone(buzzer, 900, 100);
   delay(400);
   digitalWrite(buzzer, 0); tone(buzzer, 900, 100);
   delay(400);
   digitalWrite(buzzer, 1); tone(buzzer, 900, 100);
   delay(400);
   digitalWrite(buzzer, 0); tone(buzzer, 900, 100);
   delay(400);
  }else{
  /*If humidity is lower than 70% & 
  temperature is lower than 30 degrees Celsius 
  then it will show on LCD „Temp. & hum. are in normal limits”*/
   digitalWrite(26, LOW);
   digitalWrite(27, LOW);
   digitalWrite(14, HIGH);
   
   lcd.println("Temp. & hum. are");
   lcd.setCursor(0, 1);
   lcd.println("in normal limits");
   lcd.setCursor(0, 0);
   
   digitalWrite(buzzer, 0);
  }
  
  /*If either humidity is lower than 70%, but 
  temperature is higher than 30 degrees Celsius, 
  then it will show on LCD „Be ware! Temp. too high” or
  humidity is higher than 70%, but 
  temperature is lower than 30 degrees Celsius, then
  it will show on LCD „Be ware! Hum. too high”*/
  if(data.humidity < 70.00 && data.temperature >= 30.00){
   digitalWrite(26, LOW);
   digitalWrite(27, HIGH);
   digitalWrite(14, LOW);
   
   lcd.println("Be ware!        ");
   lcd.setCursor(0, 1);
   lcd.println("Temp. too high! ");
   lcd.setCursor(0, 0);
   
   digitalWrite(buzzer, 1); tone(buzzer, 400, 400);
   delay(400);
   digitalWrite(buzzer, 0); tone(buzzer, 400, 400);
   delay(400);
  }
  if(data.humidity >= 70.00 && data.temperature < 30.00){
   digitalWrite(26, LOW);
   digitalWrite(27, HIGH);
   digitalWrite(14, LOW);
   
   lcd.println("Be ware!        ");
   lcd.setCursor(0, 1);
   lcd.println("Hum. too high!  ");
   lcd.setCursor(0, 0);
   
   digitalWrite(buzzer, 1); tone(buzzer, 400, 400);
   delay(400);
   digitalWrite(buzzer, 0); tone(buzzer, 400, 400);
   delay(400);
  }

  delay(10); // this speeds up the simulation

   if (WiFi.status() != WL_CONNECTED) {
      reconnect();
    }

      if (!tb.connected()) {
       // Connect to the ThingsBoard
       Serial.print("Connecting to: ");
       Serial.print(THINGSBOARD_SERVER);
       Serial.print(" with token ");
       Serial.println(TOKEN);
       if (!tb.connect(THINGSBOARD_SERVER, TOKEN)) {
         Serial.println("Failed to connect");
         return;
        }
      }

    Serial.println("Sending data...");
 
    // Uploads new telemetry to ThingsBoard using MQTT.
    // See https://thingsboard.io/docs/reference/mqtt-api/#telemetry-upload-api
    // for more details
    tb.loop();
}