#ifndef __mp3_H__
#define __mp3_H__

#include "SerialMP3Player.h"

class mp3
{
private:
    const char* STARTED_STRING = "Status: playing";
    const char* STOPPED_STRING = "Status: stopped";

    SerialMP3Player *player;
    size_t _rx_pin,_tx_pin;
    unsigned long _play_since_ms = 0;
public:
    mp3(size_t rx_pin, size_t tx_pin);
    ~mp3();
    void stop();
    void play(size_t nr);
    unsigned long is_playing();    
    void begin(byte vol=30);
    void play_vol(size_t nr, byte vol);
    void vol(byte val);
};

mp3::mp3(size_t rx_pin, size_t tx_pin)
{
    _rx_pin = rx_pin;
    _tx_pin = tx_pin;
    player = new SerialMP3Player(_rx_pin, _tx_pin);
}

mp3::~mp3()
{
}

void mp3::begin(byte vol)
{
    player->begin(9600); 
    delay(500);          
    player->sendCommand(CMD_SEL_DEV, 0, 2);   //select sd-card
    delay(500);
    player->setVol(vol);
}

void mp3::play_vol(size_t nr, byte vol)
{
    player->setVol(vol);
    player->play(nr); 
    _play_since_ms = millis();
}


void mp3::play(size_t nr)
{
    player->playSL(nr);
    _play_since_ms = millis();
}

void mp3::vol(byte val)
{
    player->setVol(val);
    _play_since_ms = millis();
}

unsigned long mp3::is_playing()
{
    player->qStatus();
    if (player->available()){
        String answer = player->decodeMP3Answer();
        if(answer.indexOf(STARTED_STRING) > -1)
        {
            return(millis() - _play_since_ms);
        }
    }
    return 0;
}

void mp3::stop()
{
    player->stop();
}

#endif