var image_mode = 0;
var normal_dom, table_dom;

function add_panel(after)
{
    var nav_top = $(after);
    if (nav_top.length === 0) return;
    nav_top = nav_top[0];

    var tab_bar = $('<div class="image-mode-tab" role="radiogroup" aria-label="Image mode"></div>');

    var tab;

    tab = $('<input type="radio" class="image-mode-normal" name="image-mode" value="0" checked="checked"/>');
    tab.on("change", tab_handler);
    tab = $('<label>Normal</label>').prepend(tab);
    tab_bar.append(tab);

    tab = $('<input type="radio" class="image-mode-table" name="image-mode" value="1"/>');
    tab.on("change", tab_handler);
    tab = $('<label>Gallery</label>').prepend(tab);
    tab_bar.append(tab);

    tab_bar.insertAfter(nav_top);
}

function tab_handler(ev)
{
    var current_el = $(this);

    if (!current_el.prop('checked')) return;

    var new_mode = parseInt(current_el.val(), 10);
    if (new_mode === image_mode) return;
    image_mode = new_mode;

    make_normal_dom();
    make_table_dom();

    switch(new_mode) {
        case 0:
            $('#posts-table').replaceWith(normal_dom);
            break;
        case 1:
            $('#posts').replaceWith(table_dom);
            break;
    }
}

function make_normal_dom()
{
    if (typeof normal_dom === 'undefined') {
        normal_dom = $('#posts').clone(true);
    }
}

function make_table_dom()
{
    if (typeof table_dom !== 'undefined') return;

    table_dom = $('<div id="posts-table"></div>');
    $('#posts > .post > .image > a').each(
        function(){
            table_dom.append(
                $(this).clone().attr('target', '_blank')
            );
        }
    );
}

function moveCaretToEnd(el) {
        if (typeof el.selectionStart == "number") {
            el.selectionStart = el.selectionEnd = el.value.length;
        } else if (typeof el.createTextRange != "undefined") {
            el.focus();
            var range = el.createTextRange();
            range.collapse(false);
            range.select();
        }
}

function addQuickReply(postId) {
    var textToAdd = '>>' + postId + '\n\n';
    var textAreaId = '#id_text';
    $(textAreaId).val($(textAreaId).val()+ textToAdd);

    var textarea = document.getElementById('id_text');
    $(textAreaId).focus();
    moveCaretToEnd(textarea);

    $("html, body").animate({ scrollTop: $(textAreaId).offset().top }, "slow");
}

function addRefLinkMap() {
    var postByNum = [], refMap = [];

    $('.post').each(function() {
        var self = $(this);

        var postNum = self.attr('id');
        //add post by id
        postByNum[postNum] = self;
        //add ref link
        self.find('p').children('a').each(function() {
            if($(this).text().indexOf('>>') == 0) {
                var refNum = $(this).text().match(/\d+/);

                if(postByNum[refNum]) {
                    if(!refMap[refNum])
                        refMap[refNum] = [];

                    //if !exist
                    if((',' + refMap[refNum].toString() + ',').indexOf(',' + postNum + ',') < 0) {
                        refMap[refNum].push(postNum);
                    };
                }
            }
        });
    });

    for(var pNum in refMap) {
        if(typeof refMap[pNum] === 'object') {
            var data = 'Ответы:' + refMap[pNum].toString().replace(/(\d+)/g, ' <a href="/jump/$1/">>>$1</a>');

            //append refmap panel
            if(!$("#refmap_"+pNum).length) {
                $('#'+pNum+'').find('.message').after($('<div class="refmap" id="refmap_'+pNum+'">'+data+'</div>'));
            }
        }
    }
}


$(document).ready(function(){
    add_panel('.navigation_panel');
    addRefLinkMap();
});