/*
  Opis funckcji:
  Przyciśnięcie przycisku odpala kaskadę i po 1 rundzie wyłącza się. Po wyłączeniu miga dioda LED_BUILTIN.
  Po przyciśnięciu np 3/4s odpala się funckja ledTest() i wyłącza się didoda 13
*/

#include <SoftwareSerial.h>

/* Inicjalizacja zmiennych */
int ledArray[5] = {7, 6, 5, 4, 3};
int ledState[5] = {1, 1, 1, 1, 0};
int count = 0;
int timer = 200;
unsigned long time_to_press = 3000;//change if you want more time to press to accept as a press

bool is_pressed = false;
bool is_clicked = false;

int button_pin = 2; // button pin
int led_builtin = 13; //built in led
int btnState = 0;
int lastbtnState = 0;

unsigned long count_time = 0;
unsigned long end_time = 0;
unsigned long elapsed_time = 0;

bool flashing_led = false;
unsigned long prevmillis = 0;

int led_state = LOW;
int second_click = 1;
//int second_click = 0;

void setup() {
  Serial.begin(115200);
  //Keep in mind the pull-up means the pushbutton's logic is inverted. It goes
  // HIGH when it's open, and LOW when it's pressed.
  pinMode(button_pin, INPUT_PULLUP); //INPUT_PULLUP <- internal pullup resistor
  pinMode(led_builtin, OUTPUT);
  for (count = 0; count < 5; count++) {
    pinMode(ledArray[count], OUTPUT);
  }
  LedTest();
  digitalWrite(led_builtin, HIGH);
  delay(500);
  digitalWrite(led_builtin, LOW);
}
/* Funkcja użytkownika
  Kaskadowe zapalenie i gaszenie diód LED  */
void LedCascada_on_off() {
  for (count = 0; count < 5; count++) {
    if (ledState[count] == 1 ) {
      digitalWrite(ledArray[count], HIGH);
      delay(timer);
      digitalWrite(ledArray[count], LOW);
      delay(timer);
    }
    else {
    }
  }
}
void LedCascada_off() {
  for (count = 0; count < 5; count++) {
    digitalWrite(ledArray[count], LOW);
    delay(10);
  }
}
/* Funkcja użytkownika
  Zapalenie i zgaszenie wszystkich diód LED jednocześnie  */
void LedTest() {
  for (count = 0; count < 5; count++) {
    digitalWrite(ledArray[count], HIGH);
  }
  delay (2000);
  for (count = 0; count < 5; count++) {
    digitalWrite(ledArray[count], LOW);
  }
}
unsigned long Btn_check() {
  if (btnState == LOW) {
    count_time = millis();
    Serial.println("Btn pressed");
  } else if (btnState = HIGH) {
    end_time = millis();
    Serial.println("Btn released");
    elapsed_time = end_time - count_time;
    Serial.println(elapsed_time);
    if (elapsed_time > 300 && elapsed_time < time_to_press) {

      Serial.println("Button_status:clicked");
      flashing_led = true;
      second_click++;
      LedCascada_on_off();
      LedCascada_off();
    } else if (elapsed_time >= time_to_press) {
      Serial.println("Button_status:pressed");
      LedTest();
      flashing_led = false;
    }
  }
  return elapsed_time;
  elapsed_time = 0;
}
void Flashing_led_function() {
  unsigned long led_time = millis();
  if (led_time - prevmillis >= 1000) {
    prevmillis = led_time;
    if (led_state == LOW) {
      led_state = HIGH;
    } else {
      led_state = LOW;
    }
    digitalWrite(led_builtin, led_state);
  }
}
void Flashing_led_off() {
  led_state = LOW;
  digitalWrite(led_builtin, led_state);
}
void loop() {
  btnState = digitalRead(button_pin);
  if (btnState != lastbtnState) {
    Btn_check();
    delay(200); // delay before new check, to prevent from clicking twice in the same time
  }
  lastbtnState = btnState;
  if (flashing_led == true) {
    Flashing_led_function();
  }
  if (flashing_led == false) {
    Flashing_led_off();
  }
  if((second_click%2)== 0){
    LedCascada_on_off();
  }
  if((second_click%2)==1){
    LedCascada_off();}
}