0faf89b5ab
refs #4453 * On by default * Added config to disable resizing * Added basic image optimization processing * Added dep: sharp (optional dep) * Added resize middleware * Take care of rotation based on EXIF information * Removed all meta data from optimised image * Added handling if sharp could not get installed * Do not read ext twice - optimisation * Do not call sharp if config is disabled * Do not remove the original image which was uploaded (store 2 images) * Support of `req.files` for internal logic * Disabled cache to enable file removal on Windows
51 lines
1.6 KiB
JavaScript
51 lines
1.6 KiB
JavaScript
const Promise = require('bluebird');
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const common = require('../common');
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/**
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* @NOTE: Sharp cannot operate on the same image path, that's why we have to use in & out paths.
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*
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* We currently can't enable compression or having more config options, because of
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* https://github.com/lovell/sharp/issues/1360.
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*/
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const process = (options = {}) => {
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let sharp, img;
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try {
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sharp = require('sharp');
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// @NOTE: workaround for Windows as libvips keeps a reference to the input file
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// which makes it impossible to fs.unlink() it on cleanup stage
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sharp.cache(false);
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img = sharp(options.in);
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} catch (err) {
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return Promise.reject(new common.errors.InternalServerError({
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message: 'Sharp wasn\'t installed',
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code: 'SHARP_INSTALLATION',
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err: err
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}));
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}
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return img.metadata()
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.then((metadata) => {
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if (metadata.width > options.width) {
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img.resize(options.width);
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}
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// CASE: if you call `rotate` it will automatically remove the orientation (and all other meta data) and rotates
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// based on the orientation. It does not rotate if no orientation is set.
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img.rotate();
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})
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.then(() => {
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return img.toFile(options.out);
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})
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.catch((err) => {
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throw new common.errors.InternalServerError({
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message: 'Unable to manipulate image.',
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err: err,
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code: 'IMAGE_PROCESSING'
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});
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});
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};
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module.exports.process = process;
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