#include <Keypad.h>

#define RED 10
#define BLUE 11
#define GREEN 12

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

char password[] = { '1', '2', '3', '4'};
bool startRed = false;
bool isPass = false;
byte rowPins[ROWS] = {9, 8, 7, 6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {5, 4, 3, 2}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

void setup(){
  pinMode(RED,OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
  digitalWrite(RED,HIGH);
  digitalWrite(GREEN,LOW);
  digitalWrite(BLUE,LOW);
  Serial.begin(9600);
}

int redValue;
int greenValue;
int blueValue;

void loop(){
  if (startRed = false) {
    Serial.println("Paina *-nappainta ja syota salasana.");
    analogWrite(RED, 255);
    startRed = true;
  }

  char customKey = customKeypad.getKey();

  if (customKey == '*')
  {

    analogWrite(GREEN, 0);
    analogWrite(RED, 0);
    analogWrite(BLUE, 255);

    char customKey2 = customKeypad.getKey();
    int i = 0;
    bool rr = false;

    while (rr == false)
    {
      customKey2 = customKeypad.getKey();

      if (customKey2 != password[i])
      {
        if (!customKey2 == NO_KEY)
        {
          analogWrite(BLUE, 0);
          Serial.println("\nVirheellinen salasana!!");
          break;
        }
      }

      else
      {
        Serial.print('*');
        if (i == 3)
        {
          analogWrite(BLUE, 0);
          analogWrite(GREEN, 255);
          analogWrite(RED, 0);
          Serial.println(" Salasana oikein!");
          delay(5000);
          rr = true;
        }
        i++;
      }
    }
              analogWrite(GREEN, 0);
              analogWrite(RED, 255);
  }
}