#include <WiFi.h> // WiFi control for ESP32
//#include <DHTesp.h>         // DHT for ESP32 library
#include "ThingsBoard.h"
#include "PubSubClient.h"
#include "DHTesp.h"
#define CURRENT_FIRMWARE_TITLE    "TEST"
#define CURRENT_FIRMWARE_VERSION  "1.0.0"
#define WIFI_SSID           "Wokwi-GUEST" //WiFi yang digunakan WokWi
#define WIFI_PASSWORD       ""

// access token
#define TOKEN               "tiawkAozK7T2QP34bj8q"
#define THINGSBOARD_SERVER  "thingsboard.cloud"
#define WIFI_AP_NAME              "Wokwi-GUEST"
#define WIFI_PASSWORD             ""
#define Trig 13
#define Echo 12
#define LED_ON 21
float Distance = 0;
float H1 = 0;
#define SERIAL_DEBUG_BAUD    115200
const byte DHT_PIN = 15;
const byte ALARAM_PIN = 25; //LED Merah
float Temp1;
float Doam;

// Baud rate for debug serial
#define SERIAL_DEBUG_BAUD   115200
int AlaramState2=0;
int AlaramState1 =0;
// LED Indicator in ThingsBoard
byte Alaram;
DHTesp dhtSensor;
// 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 serial for debugging
  Serial.begin(SERIAL_DEBUG_BAUD);
  Serial.println();
  InitWiFi();
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(Trig, OUTPUT);
  pinMode(Echo, INPUT);
  pinMode(ALARAM_PIN, OUTPUT);
  pinMode(LED_ON, OUTPUT);

  digitalWrite(ALARAM_PIN, LOW); //Alaram=Off
}

void Do_cao_cot_nuoc(){
  digitalWrite(Trig, LOW);
  delayMicroseconds(2);
  digitalWrite(Trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(Trig, LOW);
  int duration = pulseIn(Echo, HIGH);
  Distance = duration * 0.034 / 2;
  H1 = 400 - Distance;
}


void loop() {
  delay(1000);
    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;
    }
  }
  Do_cao_cot_nuoc();
  Serial.println("Sending data...");
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  Temp1=data.temperature;
  Doam=data.humidity;
       // Thông báo mức nước
  if ((Temp1 >50 ) ||(Doam<50 )||(H1>50 )) {
      digitalWrite(ALARAM_PIN, HIGH); 
     AlaramState1 = 1;
    }
  else {digitalWrite(ALARAM_PIN, LOW);  
    AlaramState1 =0;
   } 
  tb.sendTelemetryFloat("Temp1",Temp1 );
  tb.sendTelemetryFloat("Doam", Doam );
  tb.sendTelemetryFloat("Chieu cao cot nuoc", H1);
  tb.sendTelemetryInt("Alaram1",AlaramState1);

  Serial.print("Nhiệt độ (°C): ");
  Serial.print(Temp1);
  Serial.print(",  Độ ẩm(%): ");
  Serial.print(Doam);
  Serial.print("  Độ cao nước (cm): ");
  Serial.println(H1);
  tb.loop();
}