function collectPostBody(additional) {
    var post_body = {chars: 0, blocks: 0, images: 0, videos: 0};
    var body = [];

    if (additional && additional.tags) {
        post_body.tags = 0;
        $.each($('.tags-input select.tags option'), function(){
            post_body.tags++;
        });
    }

    $.each($('#list-media>li'), function() {
        var block = {};
        var type = $(this).data('type');
        block.type = type;
        if (type == 'image') {
            block.id = $(this).find('.input-image').data('id');
            if (!block.id) {
                $(this).remove();
                return true;
            }
            post_body.blocks++;
            post_body.images++;
        } else if (type == 'text') {
            $(this).find('.ck-content a').attr('rel', 'nofollow noopener');
            var html = $(this).find('.ck-content').html();
            var temp_el = document.createElement("div");
            temp_el.innerHTML = html;
            var text_printed = $.trim(temp_el.innerText);
            if (text_printed == "") {
                $(this).remove();
                return true;
            }
            block.content = $.trim($(this).find('.ck-content').html()).replace(/ /g, ' ');
            post_body.chars += text_printed.length;
            post_body.blocks++;
        } else if (type == 'video') {
            block.content = $(this).find('.input-video-js').val();
            block.source = $(this).find('.input-video-js').data('source');
            block.ratio = $(this).find('.input-video-js').data('ratio');
            block.thumb = $(this).find('.video_preview img').prop('src');
            if (!block.source) {
                $(this).remove();
                return true;
            }
            post_body.videos++;
            post_body.blocks++;
        }
        body.push(block);
    });

    if (validatePostBody(post_body, additional)) {
        var json_body = JSON.stringify(body);
        $('#track_input').val(e(json_body));
        return true;
    }

    return false;
}