#include <WiFi.h>
#include "DHTesp.h"
#include "ThingSpeak.h"
#include <LiquidCrystal_I2C.h>

const int DHT_PIN = 15;
const int LEDGREEN_PIN = 18;  // LED Merah
const int LEDRED_PIN = 19;  // LED Hijau
const int BUZZER_PIN = 2;

const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int myChannelNumber = 2722669;
const char* myWriteApiKey = "HSARF4YPJNGOAWZH";
const char* server = "api.thingspeak.com";

// Inisialisasi objek untuk sensor dan LCD
DHTesp dhtSensor;
WiFiClient client;
LiquidCrystal_I2C lcd(0x27, 20, 4);

#define MAX_DATA 6

String id[MAX_DATA][2] = {
  {"E280689401A9", "NINUN"},
  {"E2000019060C", "ARMEN"},
  {"G46RD9V40F3A", "PUTA"},
  {"B71001B76894", "EGOL"},
  {"1C81159073FD", "ABIN"},
  {"B710D0186022", "LALA"},
};

int field = 0;
bool state = 0;
String card = " ";
String name = " ";

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(LEDGREEN_PIN, OUTPUT);
  pinMode(LEDRED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  lcd.init();
  lcd.backlight();
  
  // Setup koneksi WiFi
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  Serial.print("Wifi Connecting.");
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println("Wifi connected!");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  ThingSpeak.begin(client);
  lcd.setCursor(0,0);
  lcd.print("Wifi connected !");
  lcd.setCursor(0,2);
  lcd.print("Local IP: " + String(WiFi.localIP()));
  ThingSpeak.begin(client);
  delay(1000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Tap Code Card Patien");
  Serial.println("input your id card");
}

void loop(){
  static uint32_t lastTime = millis();
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  if(Serial.available()){
    String _data = Serial.readString();
    _data.trim();
    Serial.println(_data);
    card = "INVALID";
    name = "UNKNOWN";
    for(int i = 0; i < MAX_DATA; i++){
      if (_data.equals(id[i][0])){
        state = 1;
        card = "VALID";
        name = id[i][1];
        field = i;
        Serial.println("succes");
        break;
      }
    }
    if(state){
      digitalWrite(LEDGREEN_PIN, HIGH);
      digitalWrite(BUZZER_PIN, HIGH);
      delay(1000);
      digitalWrite(LEDGREEN_PIN, LOW);
      digitalWrite(BUZZER_PIN, LOW);
    }
    else {
      digitalWrite(LEDRED_PIN, HIGH);
      digitalWrite(BUZZER_PIN, HIGH);
      delay(1000);
      digitalWrite(LEDRED_PIN, LOW);
      digitalWrite(BUZZER_PIN, LOW);
    }
    lastTime = millis();
  }
  if(state){
    state = sendData(field, data.temperature);
  }
  
  lcd.setCursor(0,1);
  lcd.print("Suhu: " + String(data.temperature) + "  ");
  lcd.setCursor(0,2);
  lcd.print("CARD: " + String(card) + "  ");
  lcd.setCursor(0,3);
  lcd.print("NAME: " + String(name) + "  ");

}

bool sendData(int _field, float _tmp){
  static uint32_t _lastTime = millis();
  if(millis() - _lastTime >= 10000){
    _lastTime = millis();

    ThingSpeak.setField(_field, _tmp);
    int x = ThingSpeak.writeFields(myChannelNumber,myWriteApiKey);
  
    Serial.println("field: " + String(_field));
    Serial.println("temperature: " + String(_tmp));
    
    if(x == 200){
      Serial.println("Data pushed successfull");
      
    }else{
      Serial.println("Push error" + String(x));
    }
    Serial.println("---");
    return 0;
  }
  return 1;
}