//#include <DFPlayer_Mini_Mp3.h>
#include <SoftwareSerial.h>

#define leftMonoPin 7
#define rightMonoPin 3
#define specEffectPin 5
#define butPin 8

SoftwareSerial mySerialL(11, 12);
SoftwareSerial mySerialR(9, 10);

const byte volume = 20;

const byte numTracks[] = {4, 6};

const byte timeBut = 200;
uint64_t lastTimeBut;
byte lastButState;

bool leftPlay = false;
bool rightPlay = false;

bool playVideo = false;

void setup() {
  Serial.begin(9600);

  pinMode(leftMonoPin, INPUT);
  pinMode(rightMonoPin, INPUT);
  pinMode(butPin, INPUT_PULLUP);
  pinMode(specEffectPin, OUTPUT);

  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
}

void loop() {
  if (digitalRead(leftMonoPin) == LOW || digitalRead(rightMonoPin) == LOW) {
    digitalWrite(specEffectPin, HIGH);
    if (digitalRead(leftMonoPin) == LOW && !leftPlay) {
      delay(100);
      leftPlay = true;
      digitalWrite(13, HIGH);
    }
    else if(leftPlay && digitalRead(leftMonoPin) == HIGH) {
      leftPlay = false;
      digitalWrite(13, LOW);
      }
    if (digitalRead(rightMonoPin) == LOW && !rightPlay) {
      delay(100);
      rightPlay = true;
      digitalWrite(12, HIGH);
    }
    else if(rightPlay && digitalRead(rightMonoPin) == HIGH) {
      rightPlay = false;
      digitalWrite(12, LOW);
    }
  }
  else {
    digitalWrite(specEffectPin, LOW);
    digitalWrite(12, LOW);
    digitalWrite(13, LOW);
  }
  checkBut();
  if(Serial.available() && playVideo) {
    Serial.read();
    playVideo = false;
  }
}

void checkBut() {
  byte stateBut = digitalRead(butPin);
  if (stateBut == LOW && stateBut != lastButState) {
    if (millis() - lastTimeBut > timeBut && !playVideo) {
      lastTimeBut = millis();
      Serial.write(1);
      playVideo = true;
      Serial.read();
    }
  }
  lastButState = stateBut;
}