$(function () {
    $(document).on('click', '[data-song-id]', function () {
        var songId = $(this).data('song-id');
        window.location.href = "/songs/edit/" + songId;
        return false;
    });
    
    $('#search-artist, #search-title, #search-uploader, .pagenum').change(function(){
        getSongs();
    });
    
    $('.pagesize').change(function(){
        $('.pagenum').val(1);
        getSongs();
    });
    
    $('button.prev').click(function(){
        var pageNumSelect = $('.pagenum');
        pageNumSelect.val(Math.max(parseInt(pageNumSelect.val()) - 1, 1));
        getSongs();
    });
    
    $('button.next').click(function(){
        var pageNumSelect = $('.pagenum');
        pageNumSelect.val(Math.min(parseInt(pageNumSelect.val()) + 1, pageNumSelect.children('option:last-child').val()));
        getSongs();
    });
    
    $('button.first').click(function(){
        $('.pagenum').val(1);
        getSongs();
    });
    
    $('button.last').click(function(){
        var pageNumSelect = $('.pagenum');
        pageNumSelect.val(pageNumSelect.children('option:last-child').val());
        getSongs();
    });

    getSongs();
});

function getSongs()
{
    var artist = $('#search-artist').val();
    var title = $('#search-title').val();
    var uploader = $('#search-uploader').val();
    var page = $('.pagenum').val();
    var pagesize = $('.pagesize').val();
    $.post('/api/managesongs', {artist: artist, title: title, page: page, pagesize: pagesize, csrfmiddlewaretoken: csrf_token}, function (result) {
        $('#request-table tbody').empty();
        songs = result.data;
        $.each(songs, function (index, song) {
            var artist = song.artist.trim() === '' ? '?' : song.artist;
            var title = song.title.trim() === '' ? '?' : song.title;
            $('#request-table tbody:last-child').append('<tr><td>' + artist + '</td><td><a href="#" data-song-id="' + song.id + '">' + title + '</a></td></tr>');
        });
        var pageNumSelect = $('.pagenum');
        pageNumSelect.empty();
        for(var i = 1; i < result.last_page + 1; i++)
        {
            pageNumSelect.append($("<option></option>")
                    .attr("value", i)
                    .text(i));
        }
        pageNumSelect.val(result.current_page);
        $('.pagesize').val(result.per_page);
    });
}