Copy Proboards Labels

(function () {
    var forumLabels = {
        labels: {},
        insertionIndex: 0,
        copy: function () {
            var labels = this.labels = [];

            $('div.list.ui-autoform').children().each(function () {
                var name = $(this).find('input.tl-name-input').val();

                if ('' == name)
                    return;

                labels.push({
                    name: name,
                    color: $(this).find('input.tl-color-input').val(),
                    perms: {
                        access: $(this).find('input.tl-permi' + 'ssions_accessible-input').val(),
                        view: $(this).find('input.tl-permi' + 'ssions_viewable-input').val()
                    }
                });
            });
            function unique(e) {
                for (var t = {}, i = [], n = 0, a = e.length; n < a; ++n)
                    JSON.stringify(e[n], null, 0)in t || (i.push(e[n]), t[JSON.stringify(e[n], null, 0)] = 1);
                return i
            }
            labels = unique(labels);
        },
        paste: function () {
            if (0 == this.labels.length)
                return;

            this.insertionIndex = 0;
            this.insertNextLabels();
        },

        insertNextLabels() {
            var label = this.labels[this.insertionIndex++];
            var list = $('.thread_label_div.ui-autoform .list.ui-autoform');
            var newItem = list.find('.ui-autoform-new-item:last');

            if (this.labels.length > this.insertionIndex)
                list.one('DOMNodeInserted', '.ui-autoform-new-item', this.insertNextLabels.bind(this));

            $('#colorPicker').css({
                visibility: 'hidden'
            });

            newItem
            .find('input.tl-color-input')
            .val(label.color)
            .trigger('focus')
            .trigger('change')
            .trigger('blur')
            .end()
            .find('input.tl-permi' + 'ssions_accessible-input')
            .val(label.perms.access)
            .end()
            .find('input.tl-permi' + 'ssions_viewable-input')
            .val(label.perms.view)
            .end()
            .find('input.tl-name-input')
            .val(label.name)
            .trigger('change');

            $('#colorPicker').css({
                visibility: ''
            });
        }
    };
    (function () {
        $(document).ajaxComplete(function (event, xhr, settings) {
            if (settings.url == proboards.route('category_board_board_dialog')) {
                const buttonpane = $('#dialog_settings').nextAll('.ui-dialog-buttonpane').find('.ui-dialog-buttonset');
                function addPasteButton() {
                    "undefined" !== typeof forumLabels.labels.length && forumLabels.labels.length && buttonpane.find('.ui-button.board-paste').length == 0 && $('<button>', {
                        role: 'button',
                        type: 'button',
                        class: 'ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only board-paste',
                        title: '[' + forumLabels.labels.map(x => {
                            return x.name
                        }).join('][') + ']'
                    }).append('<span class="ui-button-text">Paste Board Labels</span>').click(function (e) {
                        forumLabels.paste();
                        e.preventDefault();
                        return false;
                    }).prependTo(buttonpane)
                }
                function addCopyButton() {
                    $('.list.ui-autoform > .item').not('.ui-autoform-new-item').length && buttonpane.find('.ui-button.board-copy').length == 0 && $('<button>', {
                        role: 'button',
                        type: 'button',
                        class: 'ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only board-copy'
                    }).append('<span class="ui-button-text">Copy Board Labels</span>').click(function (e) {
                        forumLabels.copy();
                        e.preventDefault();
                        $('.thread_label_div').prevAll('b').first().setStatus('Copied', {
                            position: 'after'
                        }),
                        addPasteButton();
                        return false;
                    }).prependTo(buttonpane);
                }
                addCopyButton(),
                addPasteButton()
            }
        })
    })();
})()

/** CHANGELOG:
1. added copy and paste buttons
2. added dynamic paste button when data copied
3. added duplicate filtering during copy process
**/