#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>       //library untuk menghubungkan ke wifi
#include "ThingSpeak.h" //library untuk menghubungkan ke Thingspeak

const int DHT_PIN = 15; //pin data sensor DHT terhubung ke pin 15
const int LED_PIN = 13; //pin LED terhubung ke pin 13
const char* WIFI_NAME = "Wokwi-GUEST";      //nama wifi (SSID wifi) [dalam simulasi ini pakai "Wokwi-GUEST"]
const char* WIFI_PASSWORD = "";             //password wifi (pass wifi) [dalam simulasi ini tidak ada {""}]
const int myChannelNumber = 2508938;        //kode channel number pada server thingspeak
const char* myWriteApiKey = "XKBUSE7SZFC1XL7N";  //kode write API KEY pada channel number di server thingspeak
const char* myReadApiKey = "68ZBFXYOKPP0JJWR";  //kode write API KEY pada channel number di server thingspeak
const char* server = "api.thingspeak.com";  //server API KEY di server thingspeak

#define ONE_WIRE_BUS 18

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 20, 4);
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensor(&oneWire);
WiFiClient client;  //memanggil fungsi WifiClient dari library wifi dengan nama client

const int RedlED = 5;
const int GreenlED = 6;
const int Buzzer = 7;

int count = 0, nomer_pasien=0;
char c;
String id,nama_pasien;
float data;

int wait = 5000;

void setup()
{
  Serial.begin(115200);
  sensor.begin();
  pinMode(RedlED, OUTPUT);
  pinMode(GreenlED, OUTPUT);
  pinMode(Buzzer, OUTPUT);

  lcd.begin(20, 4); // set up the LCD's number of columns and rows:
  lcd.setCursor(0, 0);
  lcd.print("  Pengukuran Suhu Tubuh ");
  lcd.setCursor(0, 1);
  lcd.print(" Pasien Berbasis RFID ");
  lcd.setCursor(0, 2);
  lcd.print(" CARD:   ");
  lcd.setCursor(0, 3);
  lcd.print(" NAME:   ");
  delay(20);
  
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);     //wifi di mulai dengan mencari SSID dan password yang diatur
  Serial.print("Wifi Connecting.");   //Mengirimkan data serial bertuliskan "Wifi Connecting" setelah itu ganti baris
  while (WiFi.status() != WL_CONNECTED){    //perulangan terus menerus jika status wifi belum tersambung
    delay(1000);                            //Jeda waktu 1000ms atau 1 detik
    Serial.print(".");                      //Mengirimkan data serial bertuliskan "." tanpa ganti garis
  }
  Serial.println("Wifi connected !");      //Mengirimkan data serial bertuliskan "Wifi connected" setelah itu ganti baris
  Serial.println("Local IP: " + String(WiFi.localIP())); //Mengirimkan data serial bertuliskan "Local IP: [IP WIFI]" setelah itu ganti baris
  ThingSpeak.begin(client);     //Thingspeak di mulai dengan menhubungkan melalui client
  
  Serial.println("Please scan your RFID Card");

}



void loop()
{
  sensor.requestTemperatures();
  Serial.print("Temperature is: ");
  delay(10);

  Serial.println(sensor.getTempCByIndex(0));
  data = sensor.getTempCByIndex(0); //Membaca data suhu dan kelembaban pada sensor DHT kemudian di masukan ke variable data array
  delay(1000);
  while (Serial.available() > 0)
  {
    c = Serial.read();
    count++;
    id += c;
    if (count == 12)
    {
      Serial.print(id);
      //break;
      data_pasien();
    }
  }
  count = 0;
  id = "";
  delay(500);
}

void kirimdata(){
  ThingSpeak.setField(nomer_pasien,data);  //Thingspeak mengatur peletakan data pada field 1 dengan data yang akan dikirimkan adalah data suhu
  /*if (ThingSpeak.readField(myChannelNumber, myReadApiKey)) {
    nama_pasien = String(ThingSpeak.getFieldName(nomer_pasien));
  }*/
    Serial.println("Valid Card");
    lcd.setCursor(0, 2);
    lcd.print("CARD: VALID   ");
    lcd.setCursor(0, 3);
    lcd.print("NAME: ");
    lcd.setCursor(6, 3);
    lcd.print(nama_pasien);
    digitalWrite(GreenlED, HIGH);
    delay(wait);
    digitalWrite(GreenlED, LOW);
    lcd.setCursor(0, 2);
    lcd.print("CARD:           ");
    lcd.setCursor(0, 3);
    lcd.print("NAME:           ");
}

void data_pasien() {
  if (id == "E280689401A9")
  {
    nomer_pasien = 1;
    nama_pasien = "Abe";
    kirimdata();
  }

  else if (id == "E2000019060C")
  {
    nomer_pasien = 2;
    nama_pasien = "Cipung";
    kirimdata();
  }

  else if (id == "G46RD9V40F3A")
  {
    nomer_pasien = 3;
    nama_pasien = "Emma";
    kirimdata();
  }

  else if (id == "B71001B76894")
  {
    nomer_pasien = 4;
    nama_pasien = "Fajar";
    kirimdata();
  }

  else if (id == "1C81159073FD")
  {
    nomer_pasien = 5;
    nama_pasien = "Rafatar";
    kirimdata();
  }

  else if (id == "B710D0186022")
  {
    nomer_pasien = 6;
    nama_pasien = "Zalfa";
    kirimdata();
  }

  else
  {
    nomer_pasien=0;
    Serial.println("Invalid Card");
    lcd.setCursor(0, 2);
    lcd.print(" CARD: INVALID   ");
    lcd.setCursor(0, 3);
    lcd.print(" NAME: UNKNOWN     ");
    digitalWrite(RedlED, HIGH);
    digitalWrite(Buzzer, HIGH);
    delay(500);
    digitalWrite(Buzzer, LOW);
    delay(4000);
    digitalWrite(RedlED, LOW);
    lcd.setCursor(0, 2);
    lcd.print(" CARD:           ");
    lcd.setCursor(0, 3);
    lcd.print(" NAME:           ");
  }
}