#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <HTTPClient.h>

#define BUTTON1 13
#define BUTTON2 12
#define BUTTON3 14
#define BUZZER 26

LiquidCrystal_I2C lcd(0x27, 16, 2);

// Karakter custom: hati (❤)
byte heartChar[8] = {
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000
};

const char* ssid = "Wokwi-GUEST";
const char* password = "";

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();

  // Buat karakter hati di slot 0
  lcd.createChar(0, heartChar);

  pinMode(BUTTON1, INPUT_PULLUP);
  pinMode(BUTTON2, INPUT_PULLUP);
  pinMode(BUTTON3, INPUT_PULLUP);
  pinMode(BUZZER, OUTPUT);

  lcd.setCursor(0, 0);
  lcd.print("Sim Fingerprint");

  WiFi.begin(ssid, password);
  lcd.setCursor(0, 1);
  lcd.print("WiFi...");
  delay(2000);
  lcd.clear();
}

void loop() {
  if (digitalRead(BUTTON1) == LOW) {
    handleFingerprint(1);
  } else if (digitalRead(BUTTON2) == LOW) {
    handleFingerprint(2);
  } else if (digitalRead(BUTTON3) == LOW) {
    handleFingerprint(3);
  }

  delay(200);
}

void handleFingerprint(int id) {
  lcd.clear();

  if (id == 1) {
    lcd.setCursor(0, 0);
    lcd.print("HELLO DIAN,TIDAK");
  } else if (id == 2) {
    lcd.setCursor(0, 0);
    lcd.print("HELLO FRANKLIMIT");
  } else {
    lcd.setCursor(0, 0);
    lcd.print("HELLO UNKNOWN");
  }

  lcd.setCursor(2, 1);  // rata tengah untuk "WELCOME"
  lcd.print("WELCOME ");
  lcd.write(byte(0));
  lcd.write(byte(0));
  lcd.write(byte(0));

  digitalWrite(BUZZER, HIGH);
  delay(150);
  digitalWrite(BUZZER, LOW);

  delay(3000);
  lcd.clear();
}