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thumbnailgen.js
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thumbnailgen.js
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const fs = require('fs');
const sharp = require('sharp');
const path = require('path');
// specify the folder where the original images are located
const inputFolder = './input';
// specify the name of the folder where the thumbnails should be saved
const outputFolder = './output';
// read the contents of the input folder
fs.readdir(inputFolder, (err, files) => {
if (err) {
// handle error
throw err
} else {
// delete all the files in the output folder
fs.readdir(outputFolder, (err, outputFiles) => {
if (err) {
// handle error
throw err
} else {
let filesDeleted = 0;
outputFiles.forEach(outputFile => {
fs.unlink(path.join(outputFolder, outputFile), err => {
if (err) {
// handle error
throw err
} else {
filesDeleted++;
// check if all the files have been deleted
if (filesDeleted === outputFiles.length) {
// all the files have been deleted, so generate the thumbnails
files.forEach(file => {
// get the file name and file path for the current file
const fileName = path.parse(file).name;
const filePath = path.join(inputFolder, file);
// generate a thumbnail for the current file
sharp(filePath)
.resize(300, 300)
.toFormat('webp')
// save the thumbnail in the output folder
.toFile(path.join(outputFolder, `${fileName}-thumbnail.png`), (err, info) => {
if (err) {
// handle error
throw err
} else {
// thumbnail was generated successfully
}
});
});
}
}
});
});
}
});
}
});