#include "Arduino.h"
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"

SoftwareSerial mySoftwareSerial(2, 3); // RX, TX
DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);

#include <FastLED.h>

// How many leds in your strip?

#define NUM_LEDS 10

#define DATA_PIN 6

// Define the array of leds
CRGB leds[NUM_LEDS];

uint32_t color;

uint32_t colors[] = {CRGB::Blue,
                     CRGB::Red,
                     CRGB::Cyan,
                     CRGB::Green,
                     CRGB::HotPink,
                     CRGB::Indigo,
                     CRGB::DarkSlateGrey,
                     CRGB::Yellow, };
int numOfColors = 8;

int cnum =0;

int index = -2;
bool blink = false;

const int ActButton = 4;
const int RstButton = 5;
const int ClrButton = 7;

unsigned long mill = millis();
int interval = 500;

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


  
  Serial.println();
  Serial.println(F("DFRobot DFPlayer Mini Demo"));
  Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));

  if (!myDFPlayer.begin(mySoftwareSerial)) {  //Use softwareSerial to communicate with mp3.
    Serial.println(F("Unable to begin:"));
    Serial.println(F("1.Please recheck the connection!"));
    Serial.println(F("2.Please insert the SD card!"));
    //while(true);
  }
  //myDFPlayer.loop(2);
  Serial.println(F("DFPlayer Mini online."));

  myDFPlayer.volume(30);  //Set volume value. From 0 to 30
  //myDFPlayer.play(1);  //Play the first mp3


    FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);  // GRB ordering is assumed

    pinMode(ActButton, INPUT_PULLUP);
    pinMode(RstButton, INPUT_PULLUP);
    pinMode(ClrButton, INPUT_PULLUP);

    color = colors[cnum];

    AllOn();
    FastLED.show();
    myDFPlayer.play(0);
}

void loop()
{
    if(!digitalRead(ClrButton)){
      delay(250);
      myDFPlayer.play(4);
      SwitchColor();
      AllOn();
      FastLED.show();
    }
    if(!digitalRead(ActButton)){
      delay(250);
      if(index <15){
      myDFPlayer.play(1);
        
      if(!blink)
      index+=2;

      blink = !blink;
      
      if(index>=0 && blink==false){
      for(int i = 0 ; i < 2; i++)
      leds[index + i] = CRGB::Black;
      FastLED.show();
      }
      Serial.print("index = ");
      Serial.println(index);
      }
      else{
        myDFPlayer.play(2);
        blink = false;
        AllOff();
        FastLED.show();
        Serial.print("limit");
      }
    }
    if(!digitalRead(RstButton)){
      delay(250);
      myDFPlayer.play(3);
      blink = false;
      index = -2;
      AllOn();
      FastLED.show();
    }
    
    if(blink){
      if (millis() - mill > interval*3){
        mill = millis();
      }
      else if(millis() - mill > interval*2){
      for(int i = 0 ; i < 2; i++)
      leds[index + i] = CRGB::Black;
      FastLED.show();
      }
      else if(millis() - mill > interval){
      for(int i = 0 ; i < 2; i++)
      leds[index + i] = CRGB::Orange;
      FastLED.show();
      }
      
    }

  if (myDFPlayer.available()) {
    printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from DFPlayer to handle different errors and states.
  }
}

void AllOn(){
  for(int i = index+2; i < NUM_LEDS; i++){
    leds[i] = color;
  }
}
void AllOff(){
  for(int i = 0; i < NUM_LEDS; i++){
    leds[i] = CRGB::Black;
  }
}
void SwitchColor(){
  cnum++;
  color = colors[cnum];
  if(cnum == numOfColors -1)
  cnum=0;
 Serial.println(cnum);
}
void printDetail(uint8_t type, int value){
  switch (type) {
    case TimeOut:
      Serial.println(F("Time Out!"));
      break;
    case WrongStack:
      Serial.println(F("Stack Wrong!"));
      break;
    case DFPlayerCardInserted:
      Serial.println(F("Card Inserted!"));
      break;
    case DFPlayerCardRemoved:
      Serial.println(F("Card Removed!"));
      break;
    case DFPlayerCardOnline:
      Serial.println(F("Card Online!"));
      break;
    case DFPlayerPlayFinished:
      Serial.print(F("Number:"));
      Serial.print(value);
      Serial.println(F(" Play Finished!"));
      break;
    case DFPlayerError:
      Serial.print(F("DFPlayerError:"));
      switch (value) {
        case Busy:
          Serial.println(F("Card not found"));
          break;
        case Sleeping:
          Serial.println(F("Sleeping"));
          break;
        case SerialWrongStack:
          Serial.println(F("Get Wrong Stack"));
          break;
        case CheckSumNotMatch:
          Serial.println(F("Check Sum Not Match"));
          break;
        case FileIndexOut:
          Serial.println(F("File Index Out of Bound"));
          break;
        case FileMismatch:
          Serial.println(F("Cannot Find File"));
          break;
        case Advertise:
          Serial.println(F("In Advertise"));
          break;
        default:
          break;
      }
      break;
    default:
      break;
  }
}