var previewWidth = 482,
    previewHeight = 110;

$(document).ready(function() {

    /* Removed as this is now (hopefully) unnecessary */
    //$("#Panel").stickyPanel({
    //    topPadding: 1,
    //    afterDetachCSSClass: "floated-panel",
    //    savePanelSpace: true
    //});

    //this statement tells the browser to fade out any success message after 5 seconds
    setTimeout(function(){$(".success").fadeOut("slow", function(){$(this).empty()});}, 5000);
});

/*
 * i18n_months and i18n_days_short are used in jquery datepickers
 * which we use in multiple places
 */
var i18n_months = [
    $.i18n._("January"),
    $.i18n._("February"),
    $.i18n._("March"),
    $.i18n._("April"),
    $.i18n._("May"),
    $.i18n._("June"),
    $.i18n._("July"),
    $.i18n._("August"),
    $.i18n._("September"),
    $.i18n._("October"),
    $.i18n._("November"),
    $.i18n._("December")
];

var i18n_months_short = [
    $.i18n._("Jan"),
    $.i18n._("Feb"),
    $.i18n._("Mar"),
    $.i18n._("Apr"),
    $.i18n._("May"),
    $.i18n._("Jun"),
    $.i18n._("Jul"),
    $.i18n._("Aug"),
    $.i18n._("Sep"),
    $.i18n._("Oct"),
    $.i18n._("Nov"),
    $.i18n._("Dec")
];

var i18n_days_short = [
    $.i18n._("Su"),
    $.i18n._("Mo"),
    $.i18n._("Tu"),
    $.i18n._("We"),
    $.i18n._("Th"),
    $.i18n._("Fr"),
    $.i18n._("Sa")
];

var HTTPMethods = Object.freeze({
    GET: "GET",
    POST: "POST",
    PUT: "PUT",
    PATCH: "PATCH",
    DELETE: "DELETE",
    OPTIONS: "OPTIONS"
});

var dateStartId = "#sb_date_start",
    timeStartId = "#sb_time_start",
    dateEndId = "#sb_date_end",
    timeEndId = "#sb_time_end";

function getDatatablesStrings(overrideDict) {

    var dict = {
        "sEmptyTable":     $.i18n._("No data available in table"),
        "sInfo":           $.i18n._("Showing _START_ to _END_ of _TOTAL_ entries"),
        "sInfoEmpty":      $.i18n._("Showing 0 to 0 of 0 entries"),
        "sInfoFiltered":   "", // $.i18n._("(filtered from _MAX_ total entries)"),
        "sInfoPostFix":    $.i18n._(""),
        "sInfoThousands":  $.i18n._(","),
        "sLengthMenu":     $.i18n._("Show _MENU_"),
        "sLoadingRecords": $.i18n._("Loading..."),
        //"sProcessing":     $.i18n._("Processing..."),
        "sProcessing":     $.i18n._(""),
        "sSearch":         $.i18n._(""),
        "sZeroRecords":    $.i18n._("No matching records found"),
        "oPaginate": {
            "sFirst":    "«",
            "sLast":     "»",
            "sNext":     "›",
            "sPrevious": "‹"
        },
        //"oPaginate": {
        //    "sFirst":    $.i18n._("First"),
        //    "sLast":     $.i18n._("Last"),
        //    "sNext":     $.i18n._("Next"),
        //    "sPrevious": $.i18n._("Previous")
        //},
        "oAria": {
            "sSortAscending":  $.i18n._(": activate to sort column ascending"),
            "sSortDescending": $.i18n._(": activate to sort column descending")
        }
    };

    return $.extend({}, dict, overrideDict);
}

function adjustDateToServerDate(date, serverTimezoneOffset){
    //date object stores time in the browser's localtime. We need to artificially shift 
    //it to 
    var timezoneOffset = date.getTimezoneOffset()*60*1000;
    
    date.setTime(date.getTime() + timezoneOffset + serverTimezoneOffset*1000);
    
    /* date object has been shifted to artificial UTC time. Now let's
     * shift it to the server's timezone */
    return date;
}

/**
 *handle to the jplayer window
 */
var _preview_window = null;

/**
 *Gets the info from the view when menu action play choosen and opens the jplayer window.
 */
function openAudioPreview(p_event) {
    p_event.stopPropagation();
    
    var audioFileID = $(this).attr('audioFile');
    var objId = $('.obj_id:first').attr('value');
    var objType = $('.obj_type:first').attr('value');
    var playIndex = $(this).parent().parent().attr('id');
    playIndex = playIndex.substring(4); //remove the spl_
    
    if (objType == "playlist") {
        open_playlist_preview(objId, playIndex);
    } else if (objType == "block") {
        open_block_preview(objId, playIndex);
    }
}

function open_audio_preview(type, id) {
    // The reason that we need to encode artist and title string is that
    // sometime they contain '/' or '\' and apache reject %2f or %5f
    // so the work around is to encode it twice.
    openPreviewWindow(baseUrl+'audiopreview/audio-preview/audioFileID/'+id+'/type/'+type, previewWidth, previewHeight);
    _preview_window.focus();
}

/**
 *Opens a jPlayer window for the specified info, for either an audio file or playlist.
 *If audioFile, audioFileTitle, audioFileArtist is supplied the jplayer opens for one file
 *Otherwise the playlistID and playlistIndex was supplied and a playlist is played starting with the
 *given index.
 */
function open_playlist_preview(p_playlistID, p_playlistIndex) {
    if (p_playlistIndex == undefined) //Use a resonable default.
        p_playlistIndex = 0;
    
    
    if (_preview_window != null && !_preview_window.closed)
        _preview_window.playAllPlaylist(p_playlistID, p_playlistIndex);
    else
        openPreviewWindow(baseUrl+'audiopreview/playlist-preview/playlistIndex/'+p_playlistIndex+'/playlistID/'+p_playlistID, previewWidth, previewHeight);
    _preview_window.focus();
}

function open_block_preview(p_blockId, p_blockIndex) {
    if (p_blockIndex == undefined) //Use a resonable default.
        p_blockIndex = 0;
    
    if (_preview_window != null && !_preview_window.closed)
        _preview_window.playBlock(p_blockId, p_blockIndex);
    else
        openPreviewWindow(baseUrl+'audiopreview/block-preview/blockIndex/'+p_blockIndex+'/blockId/'+p_blockId, previewWidth, previewHeight);
    _preview_window.focus();
}

/**
 *Opens a jPlayer window for the specified info, for either an audio file or playlist.
 *If audioFile, audioFileTitle, audioFileArtist is supplied the jplayer opens for one file
 *Otherwise the playlistID and playlistIndex was supplied and a playlist is played starting with the
 *given index.
 */
function open_show_preview(p_showID, p_showIndex) {
    if (_preview_window != null && !_preview_window.closed)
        _preview_window.playAllShow(p_showID, p_showIndex);
    else 
        openPreviewWindow(baseUrl+'audiopreview/show-preview/showID/'+p_showID+'/showIndex/'+p_showIndex, previewWidth, previewHeight);
    _preview_window.focus();
}

function openPreviewWindow(url, w, h) {
    var dim = (w && h) ? 'width=' + w + ',height=' + h + ',' : '';
    // Hardcoding this here is kinda gross, but the alternatives aren't much better...
    _preview_window = window.open(url, $.i18n._('Audio Player'), dim + 'scrollbars=yes');
    return false;
}

function validateTimeRange() {
    var oRange,
        inputs = $('.sb-timerange > input'),
        start, end;

    oRange = AIRTIME.utilities.fnGetScheduleRange(dateStartId, timeStartId, dateEndId, timeEndId);

    start = oRange.start;
    end = oRange.end;

    if (end >= start) {
        inputs.removeClass('error');
    } else {
        if (!inputs.hasClass('error')) {
            inputs.addClass('error');
        }
    }

    return {
        start: start,
        end: end,
        isValid: end >= start
    };
}

// validate uploaded images
function validateImage(img, el) {
    // remove any existing error messages
    if ($("#img-err")) { $("#img-err").remove(); }

    if (img.size > 2048000) { // 2MB - pull this from somewhere instead?
        // hack way of inserting an error message
        var err = $.i18n._("Selected file is too large");
        el.parent().after(
            "<ul id='img-err' class='errors'>" +
            "<li>" + err + "</li>" +
            "</ul>");
        return false;
    } else if (validateMimeType(img.type) < 0) {
        var err = $.i18n._("File format is not supported");
        el.parent().after(
            "<ul id='img-err' class='errors'>" +
            "<li>" + err + "</li>" +
            "</ul>");
        return false;
    }
    return true;
}

// validate image mime type
function validateMimeType(mime) {
    var extensions = [
        'image/jpeg',
        'image/png',
        'image/gif'
        // BMP?
    ];
    return $.inArray(mime, extensions);
}

function pad(number, length) {
    return sprintf("%'0"+length+"d", number);
}

function removeSuccessMsg() {
    var $status = $('.success');
    
    $status.fadeOut("slow", function(){$status.empty()});
}

function hideHint(h) {
    h.hide("slow").addClass("hidden");
}

function showHint(h) {
    h.show("slow").removeClass("hidden");
}

function getUsabilityHint() {
    var pathname = window.location.pathname;
    $.getJSON(baseUrl + "api/get-usability-hint", {"format": "json", "userPath": pathname}, function(json) {
        var $hint_div = $('.usability_hint');
        var current_hint = $hint_div.html();
        if (json === "") {
            // there are no more hints to display to the user
            hideHint($hint_div);
        } else if (current_hint !== json) {
            // we only change the message if it is new
            if ($hint_div.is(":visible")) {
                hideHint($hint_div);
            }
            $hint_div.html(json);
            showHint($hint_div);
        } else {
            // hint is the same before we hid it so we just need to show it
            if ($hint_div.is(":hidden")) {
                showHint($hint_div);
            }
        }
    });
}

// Set up text scrolling for all tags matching selector within the calling element(s)
jQuery.fn.textScroll = function(selector) {
    this.each(function() {
        $(this).on("mouseenter", selector, function () {
            var sw = $(this)[0].scrollWidth - parseFloat($(this).css("textIndent")), iw = $(this).innerWidth();
            if (sw > iw) {
                $(this).stop().animate({
                    textIndent: "-" + (sw + 1 - iw) + "px"
                }, sw * 8);
            }
        });
        $(this).on("mouseleave", selector, function () {
            $(this).stop().animate({
                textIndent: "0"
            }, 500);
        });
    });

    return this;  // jQuery chaining
};