/*
 @licstart  The following is the entire license notice for the
 JavaScript code in this page.


 Copyright (C) 2013  neko259

 The JavaScript code in this page is free software: you can
 redistribute it and/or modify it under the terms of the GNU
 General Public License (GNU GPL) as published by the Free Software
 Foundation, either version 3 of the License, or (at your option)
 any later version.  The code is distributed WITHOUT ANY WARRANTY;
 without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE.  See the GNU GPL for more details.

 As additional permission under GNU GPL version 3 section 7, you
 may distribute non-source (e.g., minimized or compacted) forms of
 that code without the copy of the GNU GPL normally required by
 section 4, provided you include this license notice and a URL
 through which recipients can access the Corresponding Source.

 @licend  The above is the entire license notice
 for the JavaScript code in this page.
 */

var FAV_POST_UPDATE_PERIOD = 10000;
var ITEM_VOLUME_LEVEL = 'volumeLevel';

/**
 * An email is a hidden file to prevent spam bots from posting. It has to be
 * hidden.
 */
function hideEmailFromForm() {
    $('.form-email').parent().parent().hide();
}

/**
 * Highlight code blocks with code highlighter
 */
function highlightCode(node) {
    node.find('pre code').each(function(i, e) {
        hljs.highlightBlock(e);
    });
}

function updateFavPosts() {
    var includePostBody = $('#fav-panel').is(":visible");
    var url = '/api/new_posts/';
    if (includePostBody) {
        url += '?include_posts'
    }
    $.getJSON(url,
        function(data) {
            var allNewPostCount = 0;

            if (includePostBody) {
                var favoriteThreadPanel = $('#fav-panel');
                favoriteThreadPanel.empty();
            }

            $.each(data, function (_, dict) {
                var newPostCount = dict.new_post_count;
                allNewPostCount += newPostCount;

                if (includePostBody) {
                    var favThreadNode = $('<div class="post"></div>');
                    favThreadNode.append($(dict.post_url));
                    favThreadNode.append(' ');
                    favThreadNode.append($('<span class="title">' + dict.title + '</span>'));

                    if (newPostCount > 0) {
                        favThreadNode.append(' (<a href="' + dict.newest_post_link + '">+' + newPostCount + "</a>)");
                    }

                    favoriteThreadPanel.append(favThreadNode);

                    addRefLinkPreview(favThreadNode[0]);
                }
            });

            var newPostCountNode = $('#new-fav-post-count');
            if (allNewPostCount > 0) {
                newPostCountNode.text('(+' + allNewPostCount + ')');
                newPostCountNode.show();
            } else {
                newPostCountNode.hide();
            }
        }
    );
}

function initFavPanel() {
    if ($('#fav-panel-btn').length > 0) {
        setInterval(updateFavPosts, FAV_POST_UPDATE_PERIOD);
        $('#fav-panel-btn').click(function() {
            $('#fav-panel').toggle();
            updateFavPosts();

            return false;
        });

        $(document).on('keyup.removepic', function(e) {
            if(e.which === 27) {
                $('#fav-panel').hide();
            }
        });
    }
}

function setVolumeLevel(level) {
    localStorage.setItem(ITEM_VOLUME_LEVEL, level);
}

function getVolumeLevel() {
    var level = localStorage.getItem(ITEM_VOLUME_LEVEL);
    if (level == null) {
        level = 1.0;
    }
    return level
}

function processVolumeUser(node) {
    node.prop("volume", getVolumeLevel());
    node.on('volumechange', function(event) {
        setVolumeLevel(event.target.volume);
        $("video,audio").prop("volume", getVolumeLevel());
    });
}

/**
 * Add all scripts than need to work on post, when the post is added to the
 * document.
 */
function addScriptsToPost(post) {
    addRefLinkPreview(post[0]);
    highlightCode(post);
    processVolumeUser(post.find("video,audio"));
}

$( document ).ready(function() {
    hideEmailFromForm();

    $("a[href='#top']").click(function() {
        $("html, body").animate({ scrollTop: 0 }, "slow");
        return false;
    });

    addImgPreview();

    addRefLinkPreview();

    highlightCode($(document));

    initFavPanel();

    var volumeUsers = $("video,audio");
    processVolumeUser(volumeUsers);
});