// # Ghost Head Helper // Usage: `{{ghost_head}}` // // Outputs scripts and other assets at the top of a Ghost theme // // We use the name ghost_head to match the helper for consistency: // jscs:disable requireCamelCaseOrUpperCaseIdentifiers var getMetaData = require('../data/meta'), hbs = require('express-hbs'), escapeExpression = hbs.handlebars.Utils.escapeExpression, SafeString = hbs.handlebars.SafeString, _ = require('lodash'), filters = require('../filters'), assetHelper = require('./asset'), config = require('../config'), Promise = require('bluebird'), labs = require('../utils/labs'), api = require('../api'); function getClient() { if (labs.isSet('publicAPI') === true) { return api.clients.read({slug: 'ghost-frontend'}).then(function (client) { client = client.clients[0]; if (client.status === 'enabled') { return { id: client.slug, secret: client.secret }; } return {}; }); } return Promise.resolve({}); } function writeMetaTag(property, content, type) { type = type || property.substring(0, 7) === 'twitter' ? 'name' : 'property'; return ''; } function finaliseStructuredData(metaData) { var head = []; _.each(metaData.structuredData, function (content, property) { if (property === 'article:tag') { _.each(metaData.keywords, function (keyword) { if (keyword !== '') { keyword = escapeExpression(keyword); head.push(writeMetaTag(property, escapeExpression(keyword))); } }); head.push(''); } else if (content !== null && content !== undefined) { head.push(writeMetaTag(property, escapeExpression(content))); } }); return head; } function getAjaxHelper(clientId, clientSecret) { return '\n' + ''; } function ghost_head(options) { // if error page do nothing if (this.statusCode >= 400) { return; } var metaData = getMetaData(this, options.data.root), head = [], context = this.context ? this.context[0] : null, useStructuredData = !config.isPrivacyDisabled('useStructuredData'), safeVersion = this.safeVersion; return getClient().then(function (client) { if (context) { // head is our main array that holds our meta data head.push(''); head.push(''); if (metaData.previousUrl) { head.push(''); } if (metaData.nextUrl) { head.push(''); } if (context !== 'paged' && context !== 'page' && useStructuredData) { head.push(''); head.push.apply(head, finaliseStructuredData(metaData)); head.push(''); head.push('\n'); } if (client && client.id && client.secret) { head.push(getAjaxHelper(client.id, client.secret)); } } head.push(''); head.push(''); return api.settings.read({key: 'ghost_head'}); }).then(function (response) { head.push(response.settings[0].value); return filters.doFilter('ghost_head', head); }).then(function (head) { return new SafeString(head.join('\n ').trim()); }); } module.exports = ghost_head;