#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <RTClib.h>
#include <DHT.h>
#include <WiFi.h>
//  for MQTT
#include <PubSubClient.h> //library for MQTT
#include <ArduinoJson.h> //library for Parsing JSON
#include <WiFiClientSecure.h> 

#define DHTPIN 7
#define DHTTYPE DHT22

//---- MQTT Broker settings
const char* mqttServer = "4fa260c47049454fabab4228c386c22c.s2.eu.hivemq.cloud";
const int mqttPort = 8883;
const char* mqttUserName = "mrais";  // MQTT username
const char* mqttPwd = "rais6880";  // MQTT password
const char* topic1 = "Cuaca2/Suhu";
const char* topic2 = "Cuaca2/Lembab";
const char* topic3 = "Cuaca2/Lampu";
const char* clientId = "Bangsal2";
String suhu;
String lembab;
String msgStr = "";      // MQTT message buffer
String prev_weather ="";
String mess ="";
String lampu;
float tempold,tempnew, humold,humnew;
WiFiClientSecure picoClient;
PubSubClient client(picoClient);
#define MSG_BUFFER_SIZE (50)
char msg[MSG_BUFFER_SIZE];

static const char *root_ca PROGMEM = R"EOF(
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----
)EOF";
//------


DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27,20,4);
RTC_DS3231 rtc;
unsigned long minit1;
unsigned long minit2;
volatile float temp;
volatile float humd;
void setup() {
  // put your setup code here, to run once:
  Wire.setSDA(0);
  Wire.setSCL(1);
  Wire.begin();
  lcd.init();
  lcd.backlight();
  rtc.begin(); 
  //rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(28, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(12, OUTPUT);
  DateTime masa = rtc.now();
  minit1 = masa.minute();
  dht.begin();
  Serial.begin(115200);
  Serial1.begin(9600);

  //wifi
  WiFi.begin("Wokwi-GUEST", "");
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    //lcd.setCursor(0,0);  
    //lcd.print("Connecting to WIFI:");
    Serial1.println("Connecting to WIFI:");
  }
  //lcd.setCursor(0,0);
  //lcd.println(" Connected!");
  Serial1.println("Connected!");
  delay(1000);
  //lcd.clear();
  picoClient.setCACert(root_ca);
  client.setServer(mqttServer, 8883);
  //client.setServer(mqttServer, 1883);
  boolean rc = client.connect(clientId, mqttUserName, mqttPwd); 
//boolean connect(const char* id, const char* user, const char* pass, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage, boolean cleanSession);
  if (rc) {
    // connection succeeded
    Serial1.println(" HiveMQ Cloud Connected!");
  } else {
    Serial1.println(" Maaf Tak Berjaya:HiveMQ Cloud ");
    // connection failed
    Serial1.println(int(client.state())); //will provide more information
    // on why it failed.
  }
  tempnew = 0;
  humnew = 0;
  attachInterrupt(digitalPinToInterrupt(0), baca, CHANGE);
}

void baca(){
  temp = dht.readTemperature();
  humd = dht.readHumidity();
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(2000); // this speeds up the simulation

  tempold = temp;
    // read humidity
  humold  = humd;
  suhu = String(temp);
  lembab = String(humd);
  if(isnan(humold) || isnan(tempold)){
    Serial1.println("DHT Gagal Membaca !!");
    return;
  }

  float hic = dht.computeHeatIndex(tempold,humold, false);
  //float hif = dht.computeHeatIndex(f, h);

  DateTime now = rtc.now();
  lcd.setCursor(0,0);  
  lcd.print("Date:");
  lcd.print(now.day());
  lcd.print('/');
  lcd.print(now.month());
  lcd.print('/');
  lcd.print(now.year());
  lcd.setCursor(0,1);
  lcd.print("Hour:");
  lcd.print(now.hour());
  lcd.setCursor(0,2);
  lcd.print("Minute:");
  lcd.print(now.minute());
  minit2 = now.minute();
  lcd.setCursor(0,3);
  lcd.print("Second:");
  lcd.print(now.second());
  lcd.print("   ");
  lcd.print("Beza:");
  lcd.print(minit2-minit1);
  if (now.minute()-minit1<=2)
 {  digitalWrite(28, HIGH);
    lampu ="1";
 } else 
 {  digitalWrite(28, LOW);
    lampu = "0";
 }
  
  delay(2000);
  lcd.clear();
  lcd.setCursor(0,0);  
  lcd.print("Humidity : ");
  lcd.println(humold);
  lcd.println("%");
  lcd.setCursor(0,1);  
  lcd.print("Temperature: ");
  lcd.println(tempold);
  lcd.setCursor(17,1);  
  lcd.println("C");
  delay(2000);
  lcd.clear();
  if (tempold>=30)
 { digitalWrite(9, HIGH); 
 } else {digitalWrite(9, LOW);}
  if (humold<=75)
 { digitalWrite(12, HIGH); 
 } else {digitalWrite(12, LOW);}

  client.loop();
  //client.publish(topic2, lembab.c_str(), true);
  //client.publish(topic1,suhu.c_str(), true);
  if((tempold != tempnew) && (humold != humnew))
    { client.publish(topic1,suhu.c_str(), true);
      client.publish(topic2, lembab.c_str(), true); 
      client.publish(topic3, lampu.c_str(), true);}
    else if ((tempold != tempnew) && (humold == humnew))
    { client.publish(topic1,suhu.c_str(), true);
      client.publish(topic2, lembab.c_str(), true); 
      client.publish(topic3, lampu.c_str(), true);}
    else if ((tempold == tempnew) && (humold != humnew))
    { client.publish(topic1,suhu.c_str(), true);
      client.publish(topic2, lembab.c_str(), true); 
      client.publish(topic3, lampu.c_str(), true);}
    else
    { }
  tempnew = tempold;
  humnew = humold;
  
  
  
}