jQuery(document).ready(function($) {
    $('.shashinPhotoGroups').delegate('.shashinNext', 'click', function(event) {
        var parentTableId = $(this).closest('table').attr('id');
        var tableIdParts = parentTableId.split('_');
        var currentTableId = '#shashinGroup_' + tableIdParts[1] + '_' + tableIdParts[2];
        var nextTableGroupCounter = parseInt(tableIdParts[1]) + 1;
        var nextTableId = '#shashinGroup_' + nextTableGroupCounter + '_' + tableIdParts[2];
        $(currentTableId).fadeOut('slow', function() {
            $(nextTableId).fadeIn('slow');
        })

        event.preventDefault();
    });

    $('.shashinPhotoGroups').delegate('.shashinPrevious', 'click', function(event) {
        var parentTableId = $(this).closest('table').attr('id');
        var tableIdParts = parentTableId.split('_');
        var currentTableId = '#shashinGroup_' + tableIdParts[1] + '_' + tableIdParts[2];
        var previousTableGroupCounter = parseInt(tableIdParts[1]) - 1;
        var previousTableId = '#shashinGroup_' + previousTableGroupCounter + '_' + tableIdParts[2];

        $(currentTableId).fadeOut('slow', function() {
            $(previousTableId).fadeIn('slow');
        })

        event.preventDefault();
    });

    $('.shashinThumbnailDiv').delegate('.shashinAlbumThumbLink', 'click', function(event) {
        var parentTable = $(this).closest('table');
        var parentTableIdParts = $(parentTable).attr('id').split('_');
        var parentTableStyle = $(parentTable).attr('style');
        var linkIdParts = $(this).attr('id').split('_');

        if (linkIdParts[1] == 'img') {
            var albumTitle = $(this).children('img').attr('alt');
        }

        else if (linkIdParts[1] == 'caption') {
            var albumTitle = $(this).text();
        }

        var dataToSend = {
            action: 'displayAlbumPhotos',
            shashinAlbumId: linkIdParts[2],
            shashinParentTableId: parentTableIdParts[1],
            shashinParentAlbumTitle: albumTitle,
            shashinParentTableStyle: parentTableStyle
        };

        $.get(shashinPhotoGroupsDisplayer.ajaxurl, dataToSend, function(dataReceived) {
            $(parentTable).fadeOut('slow', function() {
                $(parentTable).after($(dataReceived).hide());
                $('#shashinAlbumPhotos_' + linkIdParts[2]).fadeIn('slow');
            })
        });

        event.preventDefault();
    });

    $('.shashinPhotoGroups').delegate('.shashinReturn', 'click', function(event) {
        var returnLinkIdParts = $(this).attr('id').split('_');
        var parentTableId = '#shashinGroup_' + returnLinkIdParts[1];
        var selectedAlbumPhotosId = '#shashinAlbumPhotos_' + returnLinkIdParts[2]
        $(selectedAlbumPhotosId).fadeOut('slow', function() {
            $(parentTableId).fadeIn('slow');
            $(selectedAlbumPhotosId).remove();
        })

        event.preventDefault();
    });

    // for backward compatibility with Shashin 2 album links
    var shashinAlbumId = shashinGetParameterByName('shashin_album_key');

    if (shashinAlbumId && !isNaN(shashinAlbumId)) {
        var shashinSelectedAlbum = '#shashinAlbumThumbLink_img_' + shashinAlbumId;
        $(shashinSelectedAlbum).click();
    }

    // thank you - http://stackoverflow.com/questions/4548487/jquery-read-query-string
    function shashinGetParameterByName(name) {
        name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
        var regexS = "[\\?&]"+name+"=([^&#]*)";
        var regex = new RegExp(regexS);
        var results = regex.exec(window.location.href);
        if (results == null)
            return "";
        else
            return decodeURIComponent(results[1].replace(/\+/g, " "));
    }
});