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cfbb7f6c6b
closes #8334 - adds title, image and description to structured data to be rendered as open graph and twitter data. - if meta title and description for a post exists already, the custom structured data will overwrite those for `og:` and `twitter:` data. `JSON-LD` (Schema.org`) is not affected and will stay the same. - adds tests - adds new og and twitter fields to schema incl. migration
73 lines
3.2 KiB
JavaScript
73 lines
3.2 KiB
JavaScript
var getCachedImageSizeFromUrl = require('../../utils/cached-image-size-from-url'),
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Promise = require('bluebird'),
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_ = require('lodash');
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/**
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* Get Image dimensions
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* @param {object} metaData
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* @returns {object} metaData
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* @description for image properties in meta data (coverImage, authorImage and blog.logo), `getCachedImageSizeFromUrl` is
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* called to receive image width and height
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*/
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function getImageDimensions(metaData) {
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var fetch = {
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coverImage: getCachedImageSizeFromUrl(metaData.coverImage.url),
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authorImage: getCachedImageSizeFromUrl(metaData.authorImage.url),
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ogImage: getCachedImageSizeFromUrl(metaData.ogImage.url),
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// CASE: check if logo has hard coded image dimension. In that case it's an `ico` file, which
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// is not supported by `image-size` and would produce an error
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logo: metaData.blog.logo && metaData.blog.logo.dimensions ? metaData.blog.logo.dimensions : getCachedImageSizeFromUrl(metaData.blog.logo.url)
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};
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return Promise.props(fetch).then(function (resolve) {
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var imageObj = {};
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imageObj = {
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coverImage: resolve.coverImage,
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authorImage: resolve.authorImage,
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ogImage: resolve.ogImage,
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logo: resolve.logo
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};
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_.forEach(imageObj, function (key, value) {
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if (_.has(key, 'width') && _.has(key, 'height')) {
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// We have some restrictions for publisher.logo:
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// The image needs to be <=600px wide and <=60px high (ideally exactly 600px x 60px).
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// Unless we have proper image-handling (see https://github.com/TryGhost/Ghost/issues/4453),
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// we will fake it in some cases or not produce an imageObject at all.
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if (value === 'logo') {
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if (key.height <= 60 && key.width <= 600) {
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_.assign(metaData.blog[value], {
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dimensions: {
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width: key.width,
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height: key.height
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}
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});
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} else if ((metaData.blog.logo && metaData.blog.logo.dimensions) || key.width === key.height) {
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// CASES:
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// 1. .ico files have image dimensions assigned already. If they're not
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// within the requirements of Google, we fake them...
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// 2. the logo (non-ico) is too large, but it is a square. We fake it as well...
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_.assign(metaData.blog[value], {
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dimensions: {
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width: 60,
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height: 60
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}
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});
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}
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} else {
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_.assign(metaData[value], {
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dimensions: {
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width: key.width,
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height: key.height
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}
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});
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}
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}
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});
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return metaData;
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});
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}
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module.exports = getImageDimensions;
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