/* eslint-disable node/no-unsupported-features/node-builtins */
(function($, moment, ClipboardJS, config) {
    $('.columns .column-right-shadow').append($('.columns .column-right').children().clone());

    $('.article img:not(".not-gallery-item")').each(function() {
        // wrap images with link and add caption if possible
        if ($(this).parent('a').length === 0) {
            $(this).wrap('<a class="gallery-item" href="' + $(this).attr('src') + '"></a>');
            if (this.alt) {
                $(this).after('<div class="has-text-centered is-size-6 has-text-grey caption">' + this.alt + '</div>');
            }
        }
    });

    if (typeof moment === 'function') {
        $('.article-meta time').each(function() {
            $(this).text(moment($(this).attr('datetime')).fromNow());
        });
    }

    $('.article > .content > table').each(function() {
        if ($(this).width() > $(this).parent().width()) {
            $(this).wrap('<div class="table-overflow"></div>');
        }
    });

    function adjustNavbar() {
        const navbarWidth = $('.navbar-main .navbar-start').outerWidth() + $('.navbar-main .navbar-end').outerWidth();
        if ($(document).outerWidth() < navbarWidth) {
            $('.navbar-main .navbar-menu').addClass('is-flex-start');
        } else {
            $('.navbar-main .navbar-menu').removeClass('is-flex-start');
        }
    }
    adjustNavbar();
    $(window).resize(adjustNavbar);

    function toggleFold(codeBlock, isFolded) {
        const $toggle = $(codeBlock).find('.fold i');
        !isFolded ? $(codeBlock).removeClass('folded') : $(codeBlock).addClass('folded');
        !isFolded ? $toggle.removeClass('fa-angle-right') : $toggle.removeClass('fa-angle-down');
        !isFolded ? $toggle.addClass('fa-angle-down') : $toggle.addClass('fa-angle-right');
    }

    function createFoldButton(fold) {
        return '<span class="fold">' + (fold === 'unfolded' ? '<i class="fas fa-angle-down"></i>' : '<i class="fas fa-angle-right"></i>') + '</span>';
    }

    $('figure.highlight table').wrap('<div class="highlight-body">');
    if (typeof config !== 'undefined'
        && typeof config.article !== 'undefined'
        && typeof config.article.highlight !== 'undefined') {

        $('figure.highlight').addClass('hljs');
        $('figure.highlight .code .line span').each(function() {
            const classes = $(this).attr('class').split(/\s+/);
            if (classes.length === 1) {
                $(this).addClass('hljs-' + classes[0]);
                $(this).removeClass(classes[0]);
            }
        });

        if (typeof ClipboardJS !== 'undefined' && config.article.highlight.clipboard) {
            $('figure.highlight').each(function() {
                const id = 'code-' + Date.now() + (Math.random() * 1000 | 0);
                const button = '<a href="javascript:;" class="copy" title="Copy" data-clipboard-target="#' + id + ' .code"><i class="fas fa-copy"></i></a>';
                $(this).attr('id', id);
                if ($(this).find('figcaption').length) {
                    $(this).find('figcaption').prepend(button);
                } else {
                    $(this).prepend('<figcaption>' + button + '</figcaption>');
                }
            });
            new ClipboardJS('.highlight .copy'); // eslint-disable-line no-new
        }
        const fold = config.article.highlight.fold;
        if (fold.trim()) {
            $('figure.highlight').each(function() {
                if ($(this).find('figcaption').length) {
                    // fold individual code block
                    if ($(this).find('figcaption').find('span').length > 0) {
                        const span = $(this).find('figcaption').find('span').eq(0);
                        if (span[0].innerText.indexOf('>folded') > -1) {
                            span[0].innerText = span[0].innerText.replace('>folded', '');
                            $(this).find('figcaption').prepend(createFoldButton('folded'));
                            toggleFold(this, true);
                            return;
                        }
                    }
                    $(this).find('figcaption').prepend(createFoldButton(fold));
                } else {
                    $(this).prepend('<figcaption>' + createFoldButton(fold) + '</figcaption>');
                }
                toggleFold(this, fold === 'folded');
            });

            $('figure.highlight figcaption .fold').click(function() {
                const $code = $(this).closest('figure.highlight');
                toggleFold($code.eq(0), !$code.hasClass('folded'));
            });
        }
    }

    const $toc = $('#toc');
    if ($toc.length > 0) {
        const $mask = $('<div>');
        $mask.attr('id', 'toc-mask');

        $('body').append($mask);

        function toggleToc() { // eslint-disable-line no-inner-declarations
            $toc.toggleClass('is-active');
            $mask.toggleClass('is-active');
        }

        $toc.on('click', toggleToc);
        $mask.on('click', toggleToc);
        $('.navbar-main .catalogue').on('click', toggleToc);
    }

    // hexo-util/lib/is_external_link.js
    function isExternalLink(input, sitehost, exclude) {
        try {
            sitehost = new URL(sitehost).hostname;
        } catch (e) { }

        if (!sitehost) return false;

        // handle relative url
        const data = new URL(input, 'http://' + sitehost);

        // handle mailto: javascript: vbscript: and so on
        if (data.origin === 'null') return false;

        const host = data.hostname;

        if (exclude) {
            exclude = Array.isArray(exclude) ? exclude : [exclude];

            if (exclude && exclude.length) {
                for (const i of exclude) {
                    if (host === i) return false;
                }
            }
        }

        if (host !== sitehost) return true;

        return false;
    }

    if (typeof config !== 'undefined'
        && typeof config.site.url !== 'undefined'
        && typeof config.site.external_link !== 'undefined'
        && config.site.external_link.enable) {
        $('.article .content a').filter((i, link) => {
            return link.href
                && !$(link).attr('href').startsWith('#')
                && link.classList.length === 0
                && isExternalLink(link.href,
                    config.site.url,
                    config.site.external_link.exclude);
        }).each((i, link) => {
            link.relList.add('noopener');
            link.target = '_blank';
        });
    }
}(jQuery, window.moment, window.ClipboardJS, window.IcarusThemeSettings));