/**
   Arduino Pump Control 2025

   Copyright (C) 2025
   Released under the MIT License.
*/

#include <LiquidCrystal.h>
#include <Keypad.h>
#include <Servo.h>
#include "SafeState.h"
#include "icons.h"

#define Pump_Relay 13         // Relay Pompa

/* Locking mechanism definitions */
#define PushButton_Pin 0    // Pin Input Start / Stop Pompa
#define SERVO_PIN 6
#define SERVO_LOCK_POS   20
#define SERVO_UNLOCK_POS 90

 Servo lockServo; // XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

/* Display */
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

/* Keypad Setup */
const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
// Keypad Wiring
byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2};
byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0};
// Keypad definition
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};


Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);

/* SafeState stores the secret code in EEPROM */
 SafeState safeState;

void lock() {
  lockServo.write(SERVO_LOCK_POS);
  safeState.lock();
}

void unlock() {
 lockServo.write(SERVO_UNLOCK_POS);
}

void showStartupMessage() {
  lcd.setCursor(0, 0);
  lcd.print("Selamat Datang..");
  delay(1000);

  lcd.setCursor(0, 2);
  String message = "Pengendali Pompa";
  for (byte i = 0; i < message.length(); i++) {
    lcd.print(message[i]);
    delay(50);
  }
  delay(1000);
}

String inputSecretCode() {
  lcd.setCursor(2, 1);
  lcd.print("[____] detik");
  lcd.setCursor(3, 1);
  String result = "";
  while (result.length() < 4) {
    char key = keypad.getKey();
    if (key >= '0' && key <= '9') {
      lcd.print(key);
      result += key;
    }
  }
  return result;
}

void showWaitScreen(int delayMillis) {
  lcd.setCursor(2, 1);
  lcd.print("[..........]");
  lcd.setCursor(3, 1);
  for (byte i = 0; i < 10; i++) {
    delay(delayMillis);
    lcd.print("=");
  }
}

bool setNewCode() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Enter new time:");
  String newCode = inputSecretCode();

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Confirm new time");
  String confirmCode = inputSecretCode();

  if (newCode.equals(confirmCode)) {
    safeState.setCode(newCode);
    return true;
  } else {
    lcd.clear();
    lcd.setCursor(1, 0);
    lcd.print("Code mismatch");
    lcd.setCursor(0, 1);
    lcd.print("Safe not locked!");
    delay(2000);
    return false;
  }
}

void showUnlockMessage() {
  lcd.clear();
  lcd.setCursor(0, 0);
  //lcd.write(ICON_UNLOCKED_CHAR);
  lcd.setCursor(4, 0);
  lcd.print("Terbuka!");
  lcd.setCursor(15, 0);
  //lcd.write(ICON_UNLOCKED_CHAR);
  delay(1000);
}

void safeUnlockedLogic() {
  lcd.clear();

  lcd.setCursor(0, 0);
  //lcd.write(ICON_UNLOCKED_CHAR);
  lcd.setCursor(0, 0);
  lcd.print("# = mengunci");
  lcd.setCursor(15, 0);
  //lcd.write(ICON_UNLOCKED_CHAR);

  bool newCodeNeeded = true;

  if (safeState.hasCode()) {
    lcd.setCursor(0, 1);
    lcd.print("  A = kode baru");
    newCodeNeeded = false;
  }

  auto key = keypad.getKey();
  while (key != 'A' && key != '#') {
    key = keypad.getKey();
  }

  bool readyToLock = true;
  if (key == 'A' || newCodeNeeded) {
    readyToLock = setNewCode();
  }

  if (readyToLock) {
    lcd.clear();
    lcd.setCursor(5, 0);
    //lcd.write(ICON_UNLOCKED_CHAR);
    //lcd.print(" ");
    lcd.write(ICON_RIGHT_ARROW);
    //lcd.print(" ");
    //lcd.write(ICON_LOCKED_CHAR);

    safeState.lock();
    lock(); // Servo bergerak mengunci
    digitalWrite(Pump_Relay, HIGH);   // Pompa ON
    showWaitScreen(100);
  }
}

void safeLockedLogic() {
  lcd.clear();
  lcd.setCursor(0, 0);
  //lcd.write(ICON_LOCKED_CHAR);
  lcd.print("Kode membuka..");
  //lcd.write(ICON_LOCKED_CHAR);

  String userCode = inputSecretCode();
  bool unlockedSuccessfully = safeState.unlock(userCode);
  showWaitScreen(200);

  if (unlockedSuccessfully) {
    showUnlockMessage();
    unlock();  // Servo bergerak membuka
    digitalWrite(Pump_Relay, LOW);   // Pompa OFF
  } else {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Access Denied!");
    showWaitScreen(1000);
  }
}
// ---------------------------------------------------------------
int counter;
int i;

//const byte LED_PIN = 13;
//const byte BUTTON_PIN = 2;
const byte NUMBER_OF_BLINKS = 10;
const unsigned long DEBOUNCE_TIME = 20UL;
const unsigned long BLINK_DURATION = 500UL;

void setup() {
  pinMode(PushButton_Pin, INPUT_PULLUP);  // BUTTON_PIN
  pinMode(Pump_Relay, OUTPUT);   // LED_PIN
  
  lcd.begin(16, 2);
  init_icons(lcd);
  
  showStartupMessage();

  
  













//===================================================================
//  lockServo.attach(SERVO_PIN);

  /* Make sure the physical lock is sync with the EEPROM state */
 // Serial.begin(115200);
 // if (safeState.locked()) {
 //   lock();
 // } else {
 //   unlock();
 // }
//=====================================================================
  
}

void loop() {
 i = 0;
  lcd.clear();
  lcd.setCursor(0, 0);

  static boolean blinking = false;
  static byte blinkCount = 0;
  static boolean ledState = false;
  static unsigned long lastBlinkTime = 0;
  static unsigned long debounceTimer = 0;
  static int lastButtonState = digitalRead(PushButton_Pin);

  int buttonState = digitalRead(PushButton_Pin);
  unsigned long currentMillis = millis();

  if (blinking)
  {
    if (currentMillis - lastBlinkTime >= BLINK_DURATION)
    {
      ledState = !ledState;
      digitalWrite(Pump_Relay, ledState ? HIGH : LOW);

      lcd.setCursor(1, 1);
      lcd.print(blinkCount); delay (500);

      lastBlinkTime = currentMillis;
      blinkCount++;
    }

    if (blinkCount == NUMBER_OF_BLINKS) 
    {
       blinking = false;
       blinkCount = 0;
       // be sure the led is off
       digitalWrite(Pump_Relay, LOW);
       ledState = false;
    }
  }
  
  else {
    if (lastButtonState != buttonState)
    {
      lastButtonState = buttonState;
      debounceTimer = currentMillis;
    }
    if (debounceTimer > 0 && currentMillis - debounceTimer >= DEBOUNCE_TIME)
    {
      debounceTimer = 0;
      blinking = true;
    }
  }





// ===========================================================================
//  if (safeState.locked()) {
//    safeLockedLogic();
//  } else {
//    safeUnlockedLogic();
//  }
}