/*
 * main.cpp
 *
 *  Created on: Aug 9, 2015
 *      Author: cobaltergeist
 */

#include <iostream>
#include <SFML/System.hpp>
#include <SFML/Audio.hpp>
#include <signal.h>

//#define HAS_LOOP_PTS

bool run = true;

void sigHand(int signum)
{
    run = false;
}

int main(int argc, char ** argv)
{
    signal(SIGINT, sigHand);

    if (argc < 2)
    {
        std::cerr << "Usage: " << argv[0] << ", file, [seek_start], [loop_begin, loop_end]" << std::endl;
        return 1;
    }

    // argv[1]: Filename
    sf::Music music;
    if (!music.openFromFile(argv[1]))
    {
        std::cerr << "File Invalid or Not Found." << std::endl;
        return 1;
    }

    std::cout << "File Duration: " << music.getDuration().asSeconds() << " sec." << std::endl;
    music.setLoop(true);

    // argv[2]: Starting Position in Seconds
    if (argc >= 3)
        music.setPlayingOffset(sf::seconds(atof(argv[2])));

#ifdef HAS_LOOP_PTS
    // argv[3] and argv[4]: Loop Points in Seconds
    sf::Music::LoopPoints loop;
    if (argc >= 5)
    {
        // Attempt to set the loop points
        loop = sf::Music::LoopPoints(sf::seconds(atof(argv[3])), sf::seconds(atof(argv[4])));
        if (loop.length != sf::Time::Zero
                && loop.begin < music.getDuration()
                && loop.length <= music.getDuration()) {
            music.setLoopPoints(loop);
        }
        else
        {
            // Just get the loop points on failure, so the correct ones appear.
            std::cout << "Invalid Loop Point Range. Using Default." << std::endl;
            loop = music.getLoopPoints();
        }
    }
    else
    {
        // Just get the loop points if none provided.
        loop = music.getLoopPoints();
    }

    // Markers
    int loopBeginIndex = static_cast<int>(50.0f * (loop.begin.asSeconds() / music.getDuration().asSeconds()));
    int loopEndIndex = (loopBeginIndex + static_cast<int>(50.0f * (loop.length.asSeconds() / music.getDuration().asSeconds())));
    if (loopEndIndex > 50)
        loopEndIndex %= 50;
#else
    int loopBeginIndex = 0;
    int loopEndIndex = 50;
#endif

    // Announcement
    std::cout << std::endl;
    std::cout << "File Range:    '[]'" << std::endl;
    std::cout << "Loop Range:    '()'" << std::endl;
    std::cout << "Play Position: '|'" << std::endl;
    std::cout << std::endl;

    // Loop and display the sound position.
    music.play();
    while (run)
    {
        int playPos = static_cast<int>(50.0f * music.getPlayingOffset().asSeconds() / music.getDuration().asSeconds());
        std::cout << "\rPlaying [";
        for (int i = 0; i < 50; ++i)
        {
            // Fill a bar representing the sound duration with loop points and the play position.
            if (i == loopBeginIndex)
                std::cout << '(';

            std::cout << ((i == playPos) ? '|' : ' ');

            if (i == loopEndIndex)
                std::cout << ')';
        }
        // Just in case.
        if (loopBeginIndex >= 50)
            std::cout << '(';
        if (playPos >= 50)
            std::cout << '|';
        if (loopEndIndex >= 50)
            std::cout << ')';

        std::cout << "] " << music.getPlayingOffset().asSeconds() << "sec        " << std::flush;
        sf::sleep(sf::seconds(0.05f));
    }
    std::cout << std::endl;

    std::cout << "Done!" << std::endl;
    return 0;
}