#include "DFRobotDFPlayerMini.h"
#include "TM1637Display.h"
#include "SoftwareSerial.h"
/* Digital Pins to TM1637 */
#define CLK 5
#define DIO 4
TM1637Display display(CLK, DIO);
DFRobotDFPlayerMini myDFPlayer;
SoftwareSerial mySerial(8,9);
int lastLoopTime = 0;
const int buttonPin = 7; //Arm button
const int defusePin = 6; //Defuse button
const int LEDPin = 13; //Arming LED
const int BoomPin = 12; //the bomb
int buttonState = 0;     // current state of the arm button
int lastButtonState = 0; // previous state of the arm button
int defuseState = 0;     // current state of the defuse button
int lastdefuseState = 0; // previous state of the defuse button
unsigned long startPressed = 0;    // the moment the arm button was pressed
unsigned long endPressed = 0;      // the moment the arm button was released
unsigned long holdTime = 0;        // how long the arm button was held
unsigned long idleTime = 0;        // how long the arm button was idle
unsigned long DstartPressed = 0;  // the moment the disarm button was pressed
unsigned long DendPressed = 0;    // the moment the disarm button was released
unsigned long DholdTime = 0;      // how long the disarm button was held
unsigned long DidleTime = 0;      // how long the disarm button was idle
int timerState = 0;		// Timer on/off
unsigned long timerTime = 0;		// Timer on time
unsigned long timerStart = 0;		// Timer start time
 long countDown = 0;
unsigned long counter = 0;
uint8_t data[] = {0, 0, 0, 0};
unsigned long timerLength = 300000; //timer length, should be 300000 for 5 minute timer
       unsigned long noSeconds=timerLength/1000;
      unsigned long runHours= noSeconds/3600;
      unsigned long afterSecs=noSeconds%3600;
      unsigned long stopMinutes=afterSecs/60;
      unsigned long stopSeconds=afterSecs%60;
     
void setup() {
  pinMode(buttonPin, INPUT); // initialize the button pin as a input
  pinMode(defusePin, INPUT); // Initialize defuse button pin as input
  pinMode(LEDPin, OUTPUT);	// Set Arming LED as output
  pinMode (BoomPin, OUTPUT);// Set explosion pin as output
  digitalWrite(LEDPin, LOW);
  digitalWrite (BoomPin, LOW); //Set initial state as off for above pins
 display.setBrightness(5);
 Serial.begin(9600);
     display.showNumberDecEx(stopSeconds, 0x00, true, 2, 2);
        display.showNumberDecEx(stopMinutes, 0x40, true, 2, 0);
//myDFPlayer.volume (30);
}

void loop() {


  buttonState = digitalRead(buttonPin); // read the button input

   if (buttonState != lastButtonState) { 
     updateState(); // button state changed. It runs only once.
    
  } else {
     updateCounter(); // button state not changed. It runs in a loop.
  }

  lastdefuseState = defuseState;        // save state for next loop
   defuseState = digitalRead(defusePin); // read the button input

   if (defuseState != lastdefuseState) { 
     dupdateState(); // button state changed. It runs only once.
  } else {
     dupdateCounter(); // button state not changed. It runs in a loop.
  }

  lastButtonState = buttonState;        // save state for next loop
  
  if (timerState == 1){
    TimerCount ();
     
  }
  
  /*while(timerState == 1){
     myDFPlayer.loop(1); //MP3 0001 must be armed alarm
  }*/}

void updateState() {
  // the arm button has been just pressed
  if ((buttonState == HIGH) && (timerState == 0)) {
      startPressed = millis();
     
     }}

void updateCounter() {
  // the arm button is still pressed
  if (buttonState == HIGH) {
      holdTime = millis() - startPressed;

      if ((holdTime >= 1000) && (timerState !=1)) {
          digitalWrite (LEDPin, HIGH);
        timerState = 1;
        timerStart = millis();
        counter = timerLength; //should be 30000 for 5 minutes
       holdTime = 0;
       
      }}}
void dupdateState() {
  // the defuse button has been just pressed
  if ((defuseState == HIGH) && (timerState == 1)) {
      DstartPressed = millis();
  }}
void dupdateCounter() {
  // the defuse button is still pressed
  if ((defuseState == HIGH) && (timerState == 1)) {
      DholdTime = millis() - DstartPressed;

      if ((DholdTime >= 1000) && (timerState == 1)) {
          digitalWrite (LEDPin, LOW);  
        timerState = 0;
        counter = timerLength; //should be 30000 for 5 minutes
         display.showNumberDecEx(stopSeconds, 0x00, true, 2, 2);
        display.showNumberDecEx(stopMinutes, 0x40, true, 2, 0);
       
      }}}
  
void TimerCount(){ //Countdown to fucksplosion
   if ((timerState == 1)){
    timerTime = millis() - timerStart; //counts time since start up
    countDown = counter - timerTime; //counts down from pre-set time

 
//below turns millis into seconds and minutes
unsigned long allSeconds=countDown/1000;
unsigned long runHours= allSeconds/3600;
unsigned long secsRemaining=allSeconds%3600;
unsigned long runMinutes=secsRemaining/60;
unsigned long runSeconds=secsRemaining%60;

if (timerState == 1){
display.showNumberDecEx(runSeconds, 0x00, true, 2, 2);
display.showNumberDecEx(runMinutes, 0x40, true, 2, 0);
 if (timerTime >= timerLength){ //Timer according to timerLength 
      Boom(); 
      timerState = 0;
         }}
}}
    void Boom(){
digitalWrite (BoomPin, HIGH); //Yes, Rico. Boom.
myDFPlayer.play(2); //0002 must be explosion sound
timerState = 0;
    }