//Welcome in the project Movh Rijki Supriyatna:(MMRS_Iky)
//Sistem Smart Lock Pintu Rumah Otomatis
#include <TM1637Display.h>
#include <IRremote.h>
#include <Servo.h>

// PIN SETUP
#define CLK 3
#define DIO 4
#define IR_PIN 2
#define BUZZER_PIN 5
#define SERVO_PIN 6
#define TRIG_PIN 7
#define ECHO_PIN 8
#define OVERRIDE_PIN 9 // Tombol simulasi fingerprint

TM1637Display display(CLK, DIO);
IRrecv irrecv(IR_PIN);
decode_results results;
Servo kunci;

String password = "123"; // Kode akses yang sah
String inputCode = "";

int salahCounter = 0;
bool aksesDiizinkan = false;
bool sistemAktif = false;
unsigned long waktuTerakhirAktif = 0;

void setup() {
  Serial.begin(9600);
    irrecv.enableIRIn();
      
        pinMode(BUZZER_PIN, OUTPUT);
          pinMode(TRIG_PIN, OUTPUT);
            pinMode(ECHO_PIN, INPUT);
              pinMode(OVERRIDE_PIN, INPUT_PULLUP);
                
                  display.setBrightness(0x0f);
                    display.showNumberDec(0);
                      
                        kunci.attach(SERVO_PIN);
                          kunci.write(0); // posisi terkunci
                          }

                          void loop() {
                            // Deteksi gerakan depan pintu
                              long durasi, jarak;
                                digitalWrite(TRIG_PIN, LOW);
                                  delayMicroseconds(2);
                                    digitalWrite(TRIG_PIN, HIGH);
                                      delayMicroseconds(10);
                                        digitalWrite(TRIG_PIN, LOW);
                                          durasi = pulseIn(ECHO_PIN, HIGH);
                                            jarak = durasi * 0.034 / 2;

                                              if (jarak < 30) {
                                                  sistemAktif = true;
                                                      waktuTerakhirAktif = millis();
                                                          tampilkanStatus("WAIT");
                                                            }

                                                              // Fingerprint override (simulasi tombol)
                                                                if (digitalRead(OVERRIDE_PIN) == LOW) {
                                                                    aksesDiizinkan = true;
                                                                        bukaKunci();
                                                                            tampilkanStatus("OPEN");
                                                                                delay(3000);
                                                                                    kunci.write(0);
                                                                                        tampilkanStatus("LOCK");
                                                                                            sistemAktif = false;
                                                                                                inputCode = "";
                                                                                                    salahCounter = 0;
                                                                                                        return;
                                                                                                          }

                                                                                                            if (sistemAktif && irrecv.decode(&results)) {
                                                                                                                String tombol = decodeTombol(results.value);
                                                                                                                    Serial.println(tombol);

                                                                                                                        if (tombol == "OK") {
                                                                                                                              if (inputCode == password) {
                                                                                                                                      aksesDiizinkan = true;
                                                                                                                                              bukaKunci();
                                                                                                                                                      tampilkanStatus("OPEN");
                                                                                                                                                              delay(3000);
                                                                                                                                                                      kunci.write(0);
                                                                                                                                                                              tampilkanStatus("LOCK");
                                                                                                                                                                                      salahCounter = 0;
                                                                                                                                                                                            } else {
                                                                                                                                                                                                    salahCounter++;
                                                                                                                                                                                                            tone(BUZZER_PIN, 1000, 200);
                                                                                                                                                                                                                    tampilkanStatus("ERR");
                                                                                                                                                                                                                            delay(1000);
                                                                                                                                                                                                                                    if (salahCounter >= 3) {
                                                                                                                                                                                                                                              tampilkanStatus("LOCK");
                                                                                                                                                                                                                                                        delay(3000);
                                                                                                                                                                                                                                                                  salahCounter = 0;
                                                                                                                                                                                                                                                                          }
                                                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                                                                      inputCode = "";
                                                                                                                                                                                                                                                                                          } else {
                                                                                                                                                                                                                                                                                                inputCode += tombol;
                                                                                                                                                                                                                                                                                                    }

                                                                                                                                                                                                                                                                                                        irrecv.resume();
                                                                                                                                                                                                                                                                                                          }

                                                                                                                                                                                                                                                                                                            // Reset sistem jika tidak aktif dalam 10 detik
                                                                                                                                                                                                                                                                                                              if (sistemAktif && millis() - waktuTerakhirAktif > 10000) {
                                                                                                                                                                                                                                                                                                                  sistemAktif = false;
                                                                                                                                                                                                                                                                                                                      inputCode = "";
                                                                                                                                                                                                                                                                                                                          tampilkanStatus("LOCK");
                                                                                                                                                                                                                                                                                                                            }
                                                                                                                                                                                                                                                                                                                            }

                                                                                                                                                                                                                                                                                                                            String decodeTombol(unsigned long val) {
                                                                                                                                                                                                                                                                                                                              switch (val) {
                                                                                                                                                                                                                                                                                                                                  case 0xFF30CF: return "1";
                                                                                                                                                                                                                                                                                                                                      case 0xFF18E7: return "2";
                                                                                                                                                                                                                                                                                                                                          case 0xFF7A85: return "3";
                                                                                                                                                                                                                                                                                                                                              case 0xFF10EF: return "4";
                                                                                                                                                                                                                                                                                                                                                  case 0xFF38C7: return "5";
                                                                                                                                                                                                                                                                                                                                                      case 0xFF5AA5: return "6";
                                                                                                                                                                                                                                                                                                                                                          case 0xFF42BD: return "7";
                                                                                                                                                                                                                                                                                                                                                              case 0xFF4AB5: return "8";
                                                                                                                                                                                                                                                                                                                                                                  case 0xFF52AD: return "9";
                                                                                                                                                                                                                                                                                                                                                                      case 0xFF6897: return "0";
                                                                                                                                                                                                                                                                                                                                                                          case 0xFF22DD: return "OK";
                                                                                                                                                                                                                                                                                                                                                                              default: return "";
                                                                                                                                                                                                                                                                                                                                                                                }
                                                                                                                                                                                                                                                                                                                                                                                }

                                                                                                                                                                                                                                                                                                                                                                                void bukaKunci() {
                                                                                                                                                                                                                                                                                                                                                                                  kunci.write(90);
                                                                                                                                                                                                                                                                                                                                                                                  }

                                                                                                                                                                                                                                                                                                                                                                                  void tampilkanStatus(String status) {
                                                                                                                                                                                                                                                                                                                                                                                    if (status == "OPEN") display.showNumberDec(1111, true);
                                                                                                                                                                                                                                                                                                                                                                                      else if (status == "LOCK") display.showNumberDec(0, true);
                                                                                                                                                                                                                                                                                                                                                                                        else if (status == "WAIT") display.showNumberDec(8888, true);
                                                                                                                                                                                                                                                                                                                                                                                          else if (status == "ERR") display.showNumberDec(9999, true);
                                                                                                                                                                                                                                                                                                                                                                                          }