79 lines
1.9 KiB
JavaScript
79 lines
1.9 KiB
JavaScript
import fs from 'mz/fs';
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import jimp from 'jimp';
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import debugname from 'debug';
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const debug = debugname('hostr-api:resize');
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const types = {
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jpg: jimp.MIME_JPEG,
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png: jimp.MIME_PNG,
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gif: jimp.MIME_JPEG,
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};
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function cover(path, type, size) {
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return new Promise((resolve, reject) => {
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jimp.read(path, (errIn, image) => {
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debug('Image Opened');
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if (errIn) {
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reject(errIn);
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}
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image.quality(80).cover(size.width, size.height, (errOut, resized) => {
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debug('Image Resized');
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if (errOut) {
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reject(errOut);
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}
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resized.getBuffer(types[type], (errBuf, buffer) => {
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debug('Image Buffered');
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if (errBuf) {
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reject(errBuf);
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}
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resolve(buffer);
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});
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});
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});
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});
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}
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function scale(path, type, size) {
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return new Promise((resolve, reject) => {
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jimp.read(path, (errIn, image) => {
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debug('Image Opened');
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if (errIn) {
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reject(errIn);
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}
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image.quality(80).cover(size.width, size.height, (errOut, resized) => {
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debug('Image Resized');
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if (errOut) {
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reject(errOut);
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}
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resized.getBuffer(types[type], (errBuf, buffer) => {
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debug('Image Buffered');
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if (errBuf) {
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reject(errBuf);
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}
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resolve(buffer);
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});
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});
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});
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});
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}
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export default function resize(path, type, currentSize, newSize) {
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debug('Resizing');
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const ratio = 970 / currentSize.width;
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debug(newSize.width, ratio);
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if (newSize.width <= 150) {
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debug('Cover');
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return cover(path, type, newSize);
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} else if (newSize.width >= 970 && ratio < 1) {
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debug('Scale');
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newSize.height = currentSize.height * ratio; // eslint-disable-line no-param-reassign
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return scale(path, type, newSize);
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}
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debug('Copy');
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return fs.readFile(path);
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}
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