gpreview/dist/helpers/ghostHead.js

Preview Ghost themes locally without a full Ghost installation

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ghostHeadHelper = ghostHeadHelper;
const handlebars_1 = __importDefault(require("handlebars"));
function ghostHeadHelper(_options) {
    const site = this.site || this['@site'];
    const post = this.post || this['@post'];
    const page = this.page || this['@page'];
    const tag = this.tag || this['@tag'];
    const author = this.author || this['@author'];
    const head = [];
    let canonicalUrl = site?.url || '';
    if (post) {
        canonicalUrl += post.url;
    }
    else if (page) {
        canonicalUrl += page.url;
    }
    else if (tag) {
        canonicalUrl += tag.url;
    }
    else if (author) {
        canonicalUrl += author.url;
    }
    head.push(`<link rel="canonical" href="${canonicalUrl}" />`);
    let metaTitle = site?.title || '';
    let metaDescription = site?.description || '';
    if (post || page) {
        const content = post || page;
        metaTitle = content?.meta_title || content?.title || metaTitle;
        metaDescription = content?.meta_description || content?.custom_excerpt || content?.excerpt || metaDescription;
    }
    else if (tag) {
        metaTitle = tag.meta_title || `${tag.name} - ${site?.title}`;
        metaDescription = tag.meta_description || tag.description || metaDescription;
    }
    else if (author) {
        metaTitle = author.meta_title || `${author.name} - ${site?.title}`;
        metaDescription = author.meta_description || author.bio || metaDescription;
    }
    head.push(`<meta name="description" content="${metaDescription}" />`);
    head.push(`<meta property="og:site_name" content="${site?.title}" />`);
    head.push(`<meta property="og:type" content="${post ? 'article' : 'website'}" />`);
    head.push(`<meta property="og:title" content="${metaTitle}" />`);
    head.push(`<meta property="og:description" content="${metaDescription}" />`);
    head.push(`<meta property="og:url" content="${canonicalUrl}" />`);
    if (post?.feature_image || page?.feature_image) {
        const image = post?.feature_image || page?.feature_image;
        head.push(`<meta property="og:image" content="${image}" />`);
    }
    head.push(`<meta name="twitter:card" content="summary${(post?.feature_image || page?.feature_image) ? '_large_image' : ''}" />`);
    head.push(`<meta name="twitter:title" content="${metaTitle}" />`);
    head.push(`<meta name="twitter:description" content="${metaDescription}" />`);
    head.push(`<meta name="twitter:url" content="${canonicalUrl}" />`);
    if (site?.twitter) {
        head.push(`<meta name="twitter:site" content="${site.twitter}" />`);
    }
    if (post?.feature_image || page?.feature_image) {
        const image = post?.feature_image || page?.feature_image;
        head.push(`<meta name="twitter:image" content="${image}" />`);
    }
    if (post) {
        head.push(`<meta property="article:published_time" content="${post.published_at}" />`);
        head.push(`<meta property="article:modified_time" content="${post.updated_at}" />`);
        if (post.tags && post.tags.length > 0) {
            post.tags.forEach((tag) => {
                head.push(`<meta property="article:tag" content="${tag.name}" />`);
            });
        }
        if (post.authors && post.authors.length > 0) {
            post.authors.forEach((author) => {
                head.push(`<meta property="article:author" content="${author.name}" />`);
            });
        }
    }
    const schema = {
        '@context': 'https://schema.org',
        '@type': post ? 'Article' : 'WebSite',
        publisher: {
            '@type': 'Organization',
            name: site?.title,
            logo: {
                '@type': 'ImageObject',
                url: site?.logo || site?.icon,
            }
        },
        url: canonicalUrl,
        description: metaDescription,
    };
    if (post) {
        schema.headline = post.title;
        schema.datePublished = post.published_at;
        schema.dateModified = post.updated_at;
        if (post.authors && post.authors.length > 0) {
            schema.author = {
                '@type': 'Person',
                name: post.authors[0].name,
                url: site?.url + post.authors[0].url,
            };
        }
        if (post.feature_image) {
            schema.image = post.feature_image;
        }
    }
    head.push(`<script type="application/ld+json">${JSON.stringify(schema)}</script>`);
    head.push(`<meta name="generator" content="Ghost Theme Preview" />`);
    head.push(`<link rel="alternate" type="application/rss+xml" title="${site?.title}" href="${site?.url}/rss/" />`);
    if (post?.codeinjection_head) {
        head.push(post.codeinjection_head);
    }
    else if (page?.codeinjection_head) {
        head.push(page.codeinjection_head);
    }
    return new handlebars_1.default.SafeString(head.join('\n    '));
}
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