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ghost/core/server/data/meta/image-dimensions.js
Aileen Nowak eef7932e94 Refactor: fetch image dimensions from local file storage (#8900)
refs #8868

- Removed image-size in blog logo fn for meta data and made it synchronous
- Renamed `image-size-from-url.js` to `image-size.js` (incl. the test)
- Added second fn `getImageSizeFromFilePath` that reads from local file storage
- Added guard in `getImageSizeFromUrl` that checks if the image should be on local file storage and uses the new fn then instead
- Added a fn `fetchDimensionsFromBuffer` that takes the file buffer and returns an `imageObject` with dimensions.
- Added a new utils.js in `adapters/storage` for getting the file storage path
2017-09-05 14:13:22 +02:00

68 lines
2.6 KiB
JavaScript

var getCachedImageSizeFromUrl = require('../../utils/cached-image-size-from-url'),
Promise = require('bluebird'),
_ = require('lodash');
/**
* Get Image dimensions
* @param {object} metaData
* @returns {object} metaData
* @description for image properties in meta data (coverImage, authorImage and blog.logo), `getCachedImageSizeFromUrl` is
* called to receive image width and height
*/
function getImageDimensions(metaData) {
var fetch = {
coverImage: getCachedImageSizeFromUrl(metaData.coverImage.url),
authorImage: getCachedImageSizeFromUrl(metaData.authorImage.url),
ogImage: getCachedImageSizeFromUrl(metaData.ogImage.url),
logo: getCachedImageSizeFromUrl(metaData.blog.logo.url)
};
return Promise.props(fetch).then(function (resolve) {
var imageObj = {};
imageObj = {
coverImage: resolve.coverImage,
authorImage: resolve.authorImage,
ogImage: resolve.ogImage,
logo: resolve.logo
};
_.forEach(imageObj, function (key, value) {
if (_.has(key, 'width') && _.has(key, 'height')) {
// We have some restrictions for publisher.logo:
// The image needs to be <=600px wide and <=60px high (ideally exactly 600px x 60px).
// Unless we have proper image-handling (see https://github.com/TryGhost/Ghost/issues/4453),
// we will fake it in some cases or not produce an imageObject at all.
if (value === 'logo') {
if (key.height <= 60 && key.width <= 600) {
_.assign(metaData.blog[value], {
dimensions: {
width: key.width,
height: key.height
}
});
} else if (key.width === key.height) {
// CASE: the logo is too large, but it is a square. We fake it...
_.assign(metaData.blog[value], {
dimensions: {
width: 60,
height: 60
}
});
}
} else {
_.assign(metaData[value], {
dimensions: {
width: key.width,
height: key.height
}
});
}
}
});
return metaData;
});
}
module.exports = getImageDimensions;