images now converted sepia + checksum

src/index.ts

@@ -1,25 +1,60 @@
-import Jimp from 'jimp';
-import fs from 'fs';
+/* eslint-disable max-depth */
+/* eslint-disable complexity */
+import Jimp from 'jimp'
+import fs from 'fs/promises'
+import crypto from 'crypto'
 
-const invertColors = async (folder: string) => {
-    try {
-        
-        const files = fs.readdirSync(folder);
-        // Filtre cool
-        const imageFiles = files.filter(file => file.match(/\.(jfif)$/));
-        for (const file of imageFiles) {
-            // read image
-            const image = await Jimp.read(`${folder}/${file}`);
-            image.invert();
-            // change name 
-            const newFileName = '.' + file;
-            // save image with new file name
-            await image.writeAsync(`${folder}/${newFileName}`);
-            console.log("Images have been inverted and rename " + '${newFileName}')
-        }
-    } catch (error) {
-        console.error(error);
-    }
-};
+;(async (folder: string) => {
 
-invertColors('./images');
+
+	const files = await fs.readdir(folder)
+	// Filtre cool
+	const imageFiles = files.filter((file) => !file.startsWith('.'))
+	const data = (await fs.readFile('./output.json')).toString('utf8')
+
+	let json: Record<string, string> = {}
+	try{
+		json = JSON.parse(data)
+
+	}catch{
+		console.log('handeling...')
+	}
+
+
+	console.log('previous entries', json)
+
+
+	for await (const file of imageFiles) {
+
+		const hash = crypto.createHash('sha256')
+		hash.setEncoding('hex')
+		// the text that you want to hash
+		const readI = await fs.readFile(`${folder}/${file}`)
+		hash.write(readI)
+		hash.end()
+		const sha256sum = hash.read()
+
+		if (json[file] === sha256sum) {
+			console.log('This picture has already been turned to sepia')
+			continue
+		}
+
+		// Modification des données
+		json[file] = sha256sum
+
+		console.log('current entries', json)
+
+		// Ré-écriture dans le fichier output
+		await fs.writeFile('output.json', JSON.stringify(json))
+
+		const image = await Jimp.read(readI)
+		// read image
+		image.sepia()
+		// change name
+		const newFileName = '.' + file
+		// save image with new file name
+		await image.writeAsync(`${folder}/${newFileName}`)
+		console.log('Images have been inverted and rename ' + '.' + file)
+	}
+
+})('./images')