#include <iostream>
#include <string>
#include <fstream>
#include "bass.h"

using namespace std;
int wybor;
HSTREAM stream;      //Current
HSTREAM oldstream;   //Last
const int FLAG_NORMAL     = 1<<1;
const int FLAG_INSTANT    = 1<<2;

void aCLog_AddLogEntry(string entry)
{
    fstream plik;
    plik.open("SLib_LogFile.txt", ios::out | ios::app);
    plik << entry << endl;
}

void  Init_Bass()
{
    if(!BASS_Init(-1, 44100, 0, 0, 0))
    {
        BASS_Init(0, 44100, 0, 0, 0);
    };
}

void  aCMusic_SetVolume(float vol)
{
    Init_Bass();
    BASS_ChannelSetAttribute(stream,BASS_ATTRIB_VOL,vol);
}

void  aCMusic_FadeIn(float vol, int dur, bool reset)
{
    Init_Bass();
    BASS_ChannelSetAttribute(stream,BASS_ATTRIB_VOL,0);
    BASS_ChannelPlay(stream,reset);
    BASS_ChannelSlideAttribute(stream,BASS_ATTRIB_VOL,vol, dur);
}

void  aCMusic_FadeOut(int dur)
{
    Init_Bass();
    BASS_ChannelSlideAttribute(stream,BASS_ATTRIB_VOL,0, dur);
    Sleep(dur);
    BASS_ChannelPause(stream);
}

void  aCMusic_Stop()
{
    Init_Bass();
    BASS_ChannelPause(stream);
}

bool SoundWasFound(string file)
{
    string cs = "../_work/data/Music/" + file;
    fstream plik;
    plik.open(cs.c_str());
    if(plik.good())
        return true;
    else
        return false;

}
void aCMusic_PlayMusic(string file, float vol, int flags)
{
    if(!SoundWasFound(file))
    {
      aCLog_AddLogEntry("skip - file not found");
       return;
    }

    Init_Bass();
    //Sprawdzaæ czy stary strumieñ jest ten sam co nowy i wtedy odpalaæ od momentu zatrzymania :D
    if((flags & FLAG_INSTANT))  {oldstream = stream;}   //Sprawdzaj czy muzyka ma zostaæ gwa³townie zmieniona

    stream = BASS_StreamCreateFile(false,file.c_str(),0,0,BASS_SAMPLE_LOOP);    //Update streamu


    if((oldstream == stream)
    && (flags & FLAG_NORMAL)) //Je¿eli stary stream to ten nowy to graj go od zatrzymanego momentu
    {
        aCMusic_FadeOut(4000);
        stream = oldstream;
        oldstream = 0;
        aCMusic_FadeIn(vol,4000,false);
        return;
    }

    if((flags & FLAG_INSTANT))
    {
        aCLog_AddLogEntry("Push without fade in");
        oldstream = stream; //Zapisz stary soundtrack - Czas odtwarzania
        BASS_ChannelPause(stream);
        BASS_ChannelPlay(stream,true);  //zagraj soundtrack od zera...
    }
    else
    {
        aCLog_AddLogEntry("Push without fade in");
        aCMusic_FadeOut(4000);
        aCMusic_FadeIn (vol,4000,true); //zagraj j¹ od zera
    }

    do
    {
    }while(BASS_ChannelIsActive(stream));
    BASS_Stop();
    BASS_Free();

}




int main()
{
    aCMusic_PlayMusic("pliczek.ogg",1,FLAG_NORMAL);
    return 0;
}