62 lines
2.6 KiB
JavaScript
62 lines
2.6 KiB
JavaScript
const Promise = require('bluebird');
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const _ = require('lodash');
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const imageSizeCache = require('../../server/lib/image').cachedImageSizeFromUrl;
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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 site.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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const fetch = {
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coverImage: imageSizeCache.getCachedImageSizeFromUrl(metaData.coverImage.url),
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authorImage: imageSizeCache.getCachedImageSizeFromUrl(metaData.authorImage.url),
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ogImage: imageSizeCache.getCachedImageSizeFromUrl(metaData.ogImage.url),
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logo: imageSizeCache.getCachedImageSizeFromUrl(metaData.site.logo.url)
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};
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return Promise
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.props(fetch)
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.then(function (imageObj) {
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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.site[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 (key.width === key.height) {
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// CASE: the logo is too large, but it is a square. We fake it...
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_.assign(metaData.site[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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