82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
const fs = require('fs')
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const path = require('path')
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const globCb = require('glob')
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const util = require('util')
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const sharp = require('sharp')
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const glob = util.promisify(globCb)
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const readFile = util.promisify(fs.readFile)
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const options = {
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inputDir: './public/images/uploads',
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outputDir: './public/images/uploads/resized',
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sizes: [10, 300, 600, 1200, 1800],
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imageFormats: ['jpg', 'jpeg', 'png', 'gif', 'webp']
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}
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const saveImage = ({ buffer, size, outputFile }) => {
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return new Promise((resolve, reject) => {
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sharp(buffer)
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.resize(size)
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.toFile(outputFile, err => {
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if (err) {
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return reject(err)
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} else {
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return resolve(console.log(`✅ Saved ${outputFile}`))
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}
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})
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})
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}
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const saveImages = ({ buffer, filename }) => {
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console.log(`🎞 Processing ${filename}`)
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return Promise.all(
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options.sizes.map(async size => {
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const extname = path.extname(filename)
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const newFilename = `${path.basename(filename, extname)}.${size}${
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extname
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}`
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const outputFile = `${options.outputDir}/${newFilename}`
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const fileExists = await doesFileExist({ filename: outputFile })
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if (fileExists) return console.log(`↩️ ${outputFile} exists, skipping`)
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return saveImage({ buffer, size, outputFile })
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})
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)
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}
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const readFiles = files =>
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Promise.all(
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files.map(async filename => {
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const buffer = await readFile(filename)
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return { filename, buffer }
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})
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)
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const doesFileExist = async ({ filename }) => {
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try {
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await readFile(filename)
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return true
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} catch (e) {
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return false
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}
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}
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const resizeImages = async () => {
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console.log(`✨ Reading image files in ${options.inputDir}`)
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try {
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const fileGlob = `${options.inputDir}/**/**.+(${options.imageFormats.join(
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'|'
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)})`
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const files = await glob(fileGlob)
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const ignore = new RegExp(
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`(${options.sizes.join('|')}).(${options.imageFormats.join('|')})$`
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)
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const filesToResize = files.filter(filename => !filename.match(ignore))
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const imageFiles = await readFiles(filesToResize)
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imageFiles.map(saveImages)
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} catch (e) {
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console.log(e)
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}
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}
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resizeImages()
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