diff --git a/README.md b/README.md
index 74231e6..e780d0a 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,16 @@
-# rangement
+# Devine le rangement
 
-scripts nodejs pour ranger ses fichiers selon la méthodo PIM de Karl Voit, avec quelques utilitaires personnels
\ No newline at end of file
+script qui devine comment renommer des fichiers selon un pattern de date
+trouve des infos exif et prend la plus ancienne pour renseigner le nom de fichier.
+Inspiré des travaux de Karl Voit et de ses libs python GuessFileName, append2name, move2archive.
+
+# lancement de renommage
+`devine mon_fichier.jpg mon_autre_fichier.pdf`
+
+✅
+➡️
+🎉
+
+## options
+* -n , dry-run, ne pas renommer
+* --photos-folder, spécifie un dossier pour les photos
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diff --git a/configs.mjs b/configs.mjs
new file mode 100644
index 0000000..0ec87b4
--- /dev/null
+++ b/configs.mjs
@@ -0,0 +1,6 @@
+
+export const tagSeparator = ' '
+export const tagSectionSeparator = '--'
+export const enableTestsLocally = false
+export const reportStatistics = false
+export const version = '1.0.0'
\ No newline at end of file
diff --git a/finder.mjs b/finder.mjs
new file mode 100644
index 0000000..790b239
--- /dev/null
+++ b/finder.mjs
@@ -0,0 +1,244 @@
+/**
+ * la classe qui repère des patterns
+ */
+import { tagSectionSeparator, tagSeparator } from './configs.mjs'
+import exifr from 'exifr'
+import moment from 'moment'
+import path from 'path'
+
+/**
+ * finds patterns for file name
+ */
+export default class finder {
+
+	static statistics = {
+		filesModified: 0,
+	}
+	static patternsFiles = {
+		'downloaded_pic': /^\-\w{15}\.jpg/, // FyB8cZnWIAc21rw.jpg
+		'telegram_pic': /^\-\d{19}_\d{4}/, // -4900281569878475578_1109.jpg
+		'open_camera': /^IMG_OC_\d{8}/i, // IMG_OC_20230617_092120_3.jpg
+		'screenshot': /^Screenshot/i, // Screenshot 2023-06-15 at 15-26-04 Instance Panoramax OSM-FR.png
+	}
+
+	static reportStatistics () {
+		console.log('statistics',
+			this.statistics)
+	}
+
+	static findScreenshot (inputString) {
+		return inputString.match(/screenshot/i) || inputString.match(/capture d'écran/i)
+	}
+
+	static findFormattedDate (filepath) {
+		let match = filepath.match(/\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}/ig)
+		// console.log('match findFormattedDate', match)
+		let result = ''
+		if (match && match[0]) {
+			result = match[0]
+		}
+		return result
+	}
+
+	static findFileExtension (inputString) {
+		let result = inputString.match(/\.\w{3,4}$/i)
+		return result
+	}
+
+	/**
+	 * find the section of file name which contains the free text to describe the picture
+	 * @param fileName
+	 * @returns {*|string}
+	 */
+	static findFileNameFreeTextPart (fileName) {
+		fileName = fileName.replace(this.findFileExtension(fileName), '')
+		let boom = fileName.split(tagSectionSeparator)
+		if (boom.length) {
+			let freeTextPart = boom[0].trim()
+			console.log('freeTextPart', freeTextPart)
+			return freeTextPart
+		}
+		return fileName.trim()
+	}
+
+	/**
+	 * find an array of tags
+	 * @param inputString
+	 * @returns {[]}
+	 */
+	static findTagSectionInString (inputString) {
+		let listOfTags = []
+		// remove extension
+		let extensionFile = finder.findFileExtension(inputString)
+
+		if (extensionFile) {
+			extensionFile = extensionFile[0]
+		} else {
+			console.log('no extensionFile', extensionFile, inputString)
+			extensionFile = ''
+		}
+		inputString = inputString.replace(extensionFile, '')
+
+		// console.log('extensionFile', extensionFile)
+		if (inputString.includes(tagSectionSeparator)) {
+			// console.log('inputString', inputString)
+			if (inputString.length) {
+
+				let boom = inputString.split(tagSectionSeparator)
+				// console.log('boom', boom)
+				if (boom.length) {
+					let fileSectionsName = boom.splice(tagSeparator)
+					listOfTags = [...fileSectionsName[1].trim().split(tagSeparator)]
+					// console.log('listOfTags', listOfTags)
+				} else {
+					console.log('no boom', boom)
+				}
+			}
+		}
+		return listOfTags
+	}
+
+	static cleanSpaces (inputString) {
+		return inputString.trim().replace(/  *g/, ' ')
+	}
+
+	static searchAndReplaceInFileName (searchString, replaceString, fileName) {
+		return this.cleanSpaces(fileName.replace(searchString, replaceString))
+	}
+
+	/**
+	 * search screenshot clues and rename
+	 */
+	static searchAndRenameScreenshots (fileName) {
+		if (finder.findScreenshot(fileName)) {
+			let tags = this.findTagSectionInString(fileName)
+			console.log('tags', tags)
+			if (!tags.includes('screenshot')) {
+
+				fileName = this.addTagInFileName('screenshot', fileName)
+				fileName = this.searchAndReplaceInFileName('Screenshot', '', fileName)
+				console.log('screenShotMockFileName:', fileName)
+				return this.cleanSpaces(fileName)
+			}
+			console.log('is a screenshot, remove screenshot in name, and add tag screenshot')
+		} else {
+			return null
+		}
+	}
+
+	static addTagInFileName (tagName, fileName) {
+
+		let tags = this.findTagSectionInString(fileName)
+		let firstPart = this.findFileNameFreeTextPart(fileName)
+
+		tags.push(tagName)
+		let uniqueArray = [...new Set(tags)]
+
+		let newFileName = firstPart + ' ' + tagSectionSeparator + ' ' + tags.join(tagSeparator)
+		newFileName = newFileName.replace(/ {*}/, '') + this.findFileExtension(fileName)
+		return this.cleanSpaces(newFileName)
+	}
+
+	/**
+	 * convertit un nom de fichier en une structure décrivant plusieurs parties correspondant au pattern d'archivage
+	 * @param fullPath
+	 * @returns {{extension: *, dateStamp: string, freeText: (*|string), tags: *[]}}
+	 */
+	static destructurateFileName (fullPath) {
+		let  [folderPath, fileNameOriginal] = this.findFolderPath(fullPath)
+		let dateStampInFileNameOriginal = this.findFormattedDate(fileNameOriginal)
+		return {
+			fullPath,
+			folderPath,
+			fileNameOriginal,
+			dateStampInFileNameOriginal,
+			dateStampExif: '',
+			freeText: this.findFileNameFreeTextPart(fileNameOriginal),
+			tags: this.findTagSectionInString(fileNameOriginal),
+			extension: this.findFileExtension(fileNameOriginal),
+		}
+
+	}
+
+	/**
+	 * finds the earliest part in several exif date info
+	 * @param exifData
+	 * @returns {string}
+	 */
+	static findEarliestDateInExifData (exifData) {
+		if (exifData) {
+
+			let moments = []
+
+			// console.log('exif data : ', exifData) // Do something with your data!
+			if (exifData.DateTimeOriginal) {
+				// console.log('image créée le : DateTimeOriginal : ', exifData.DateTimeOriginal) // Do something with your data!
+				moments.push(exifData.DateTimeOriginal)
+			}
+			if (exifData.ModificationDateTime) {
+				// console.log('image créée le : ModificationDateTime : ', exifData.ModificationDateTime) // Do something with your data!
+				moments.push(exifData.ModificationDateTime)
+			}
+			if (exifData.ModifyDate) {
+				// console.log('image créée le : ModifyDate : ', exifData.ModifyDate) // Do something with your data!
+				moments.push(exifData.ModifyDate)
+			}
+			if (exifData.FileAccessDateTime) {
+				moments.push(exifData.FileAccessDateTime)
+			}
+			if (exifData.FileInodeChangeDateTime) {
+				moments.push(exifData.FileInodeChangeDateTime)
+			}
+			if (exifData.FileModificationDateTime) {
+				// console.log('image créée le : FileModificationDateTime : ', exifData.FileModificationDateTime) // Do something with your data!
+				moments.push(exifData.FileModificationDateTime)
+			}
+			if (exifData.CreateDate) {
+				// console.log('image créée le : CreateDate : ', exifData.CreateDate) // Do something with your data!
+				moments.push(exifData.CreateDate)
+			}
+
+			moments = moments.map(d => {
+				let newdate = moment(d)
+				return newdate
+			})
+			let minDate = moment.min(moments)
+
+			// console.log('minDate :::::::::', minDate)
+			console.log('minDate :::::::::', minDate.format('yyyy-MM-DDTHH:mm:ss'))
+
+			return minDate.format('yyyy-MM-DDTHH:mm:ss')
+		} else {
+			console.log('pas de exif data')
+			return ''
+		}
+	}
+
+	/**
+	 * examine plusieurs propriétés exif de date et retourne la plus ancienne
+	 * @param filepath
+	 */
+	static async findExifCreationDate (filepath) {
+
+		console.log('filepath', filepath)
+		let dateAlreadyInFileName = finder.findFormattedDate(filepath)
+		if (dateAlreadyInFileName) {
+
+			console.log('------ dateAlreadyInFileName', dateAlreadyInFileName)
+		}
+
+		return await exifr.parse(filepath)
+
+	}
+
+	static findFolderPath (filePath) {
+		let folders = filePath.split('/')
+		let fileName = folders.pop()
+		folders = filePath.replace(fileName, '')
+
+		console.log('\n - folders', folders)
+		console.log(' - fileName', fileName, '\n')
+			return [folders, fileName]
+
+	}
+}
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diff --git a/index.mjs b/index.mjs
new file mode 100644
index 0000000..75964fb
--- /dev/null
+++ b/index.mjs
@@ -0,0 +1,134 @@
+/**---------------------
+ * @name tykayn Rangement
+ * @description Rangement sorts and rename files depending on their exif data
+ * @contact contact@cipherbliss.com
+  --------------------- */
+/** ---------------------
+    libs
+  --------------------- */
+import fs from 'node-fs'
+import minimist from 'minimist'
+/** ---------------------
+    custom utilities and configuration
+ --------------------- */
+import { enableTestsLocally, reportStatistics,tagSectionSeparator, tagSeparator } from './configs.mjs'
+import {
+	TestFindFormattedDate,
+	TestScreenShotIsFoundAndRenamed,
+	TestTagsAreDetectedInFileName
+} from './testFunctions.mjs'
+import finder from './finder.mjs'
+
+let mini_arguments
+console.log(' ')
+
+function parseArguments () {
+	mini_arguments = minimist(process.argv.slice(2))
+	console.log('arguments', mini_arguments)
+}
+
+parseArguments()
+
+function renameFile (originalFileName, fileMixedNewName) {
+	fs.rename(originalFileName, fileMixedNewName, function (err) {
+		if (err) console.log('rename ERROR: ' + err)
+	})
+}
+
+function appendFileName (fileProperties, newText) {
+	fileProperties.freeText = finder.cleanSpaces(fileProperties.freeText + ' ' + newText)
+	return fileProperties
+}
+
+function prependFileName (fileProperties, newText) {
+	fileProperties.freeText = finder.cleanSpaces(newText + ' ' + fileProperties.freeText)
+	return fileProperties
+}
+
+function makeFileNameFromProperties(fileProperties) {
+
+	let tagPlace = ''
+	if (fileProperties.tags.length) {
+		tagPlace = ' ' + tagSectionSeparator + ' '
+	}
+	// return finder.cleanSpaces(fileProperties.dateStamp + ' ' + fileProperties.freeText + tagPlace + fileProperties.tags.join(tagSeparator) + fileProperties.extension).replace(+' ' + tagSectionSeparator + ' ' + '.', '.')
+	return ''+fileProperties.dateStampExif + ' ' + fileProperties.freeText + tagPlace + fileProperties.tags.join(tagSeparator) + fileProperties.extension
+}
+
+function shouldWeChangeName (structureForFile) {
+	console.log(' ______ allez hop fini la recherche on fait un nouveau nom')
+	console.log('structureForFile', structureForFile)
+	let newName = makeFileNameFromProperties(structureForFile)
+	if (structureForFile.fileNameOriginal !== newName) {
+
+		console.log('\n ancien nom :', structureForFile.fileNameOriginal)
+		// console.log(' nouveau nom:', foundDate +structureForFile.freeText + structureForFile.tags.join(tagSeparator) + structureForFile.extension )
+		console.log(' nouveau nom:', newName)
+	} else {
+		console.log(' rien à changer')
+	}
+
+}
+
+async function guessFileNameOnAllFilesFromArguments () {
+
+	// parcourir les dossiers
+	// parcourir les fichiers
+
+	console.log('liste des fichiers', mini_arguments._)
+	let fileList = mini_arguments._
+
+	fileList.forEach(fullPath => {
+
+			let structureForFile = finder.destructurateFileName(fullPath)
+
+			// examiner les infos exif de chaque fichier pour proposer un nouveau nom
+			if (!structureForFile.dateStampInFileNameOriginal) {
+				console.log('    le nom de fichier ne contient pas de date formatée au début')
+
+				finder.findExifCreationDate(structureForFile.fullPath)
+					.then(data => {
+							console.log(' ... chercher la date de création')
+							let foundDate = finder.findEarliestDateInExifData(data)
+
+							console.log(' =>>>>>>> foundDate : ', foundDate)
+							if (foundDate) {
+
+
+								// finder.findEarliestDateInExifData(fullPath).then(response => {
+								// 	console.log(' ... trouvée')
+								// 	if (response) {
+										structureForFile.dateStampExif = foundDate
+
+										shouldWeChangeName(structureForFile)
+								// 	}
+								// })
+
+							} else {
+								console.log('pas de date trouvée dans le nom')
+							}
+
+						}
+						,
+						(error) => {
+							console.log('/////////// Error in reading exif of file: ' + error.message)
+							return ''
+						})
+			}
+		}
+	)
+
+}
+
+guessFileNameOnAllFilesFromArguments()
+
+// run tests
+if (enableTestsLocally) {
+
+	TestTagsAreDetectedInFileName()
+	TestFindFormattedDate()
+	TestScreenShotIsFoundAndRenamed()
+}
+if (reportStatistics || mini_arguments.stats) {
+	finder.reportStatistics()
+}
diff --git a/main.test.js b/main.test.js
new file mode 100644
index 0000000..be3d3c6
--- /dev/null
+++ b/main.test.js
@@ -0,0 +1,22 @@
+import finder from "./finders.mjs";
+// const finders = require('./finders.mjs')
+
+describe('rangement file name', () => {
+
+    test('detects date in file name', () => {
+        expect(finder.findFormattedDate('2023-06-23T18.36.47 -- machin bidule.jpg')).toBe('2023-06-23T18.36.47');
+    });
+    test('detects file extension in file name', () => {
+        expect(finder.findFileExtension()('2023-06-23T18.36.47 -- machin bidule.jpg')).toBe('jpg');
+    });
+})
+console.log('finders', finder)
+
+test('adding positive numbers is not zero', () => {
+    for (let a = 1; a < 10; a++) {
+        for (let b = 1; b < 10; b++) {
+            expect(a + b).not.toBe(0);
+        }
+    }
+});
+
diff --git a/testFiles/2sqdf45s5g456ghdf.jpg b/testFiles/2sqdf45s5g456ghdf.jpg
new file mode 100644
index 0000000..7e387cf
Binary files /dev/null and b/testFiles/2sqdf45s5g456ghdf.jpg differ
diff --git a/testFiles/un_document.pdf b/testFiles/un_document.pdf
new file mode 100644
index 0000000..e69de29
diff --git a/testFiles/une_photo.jpg b/testFiles/une_photo.jpg
new file mode 100644
index 0000000..e69de29
diff --git a/testFiles/une_photo_pas_pareil.jpg b/testFiles/une_photo_pas_pareil.jpg
new file mode 100644
index 0000000..e69de29
diff --git a/testFiles/une_photo_pas_pareil.png b/testFiles/une_photo_pas_pareil.png
new file mode 100644
index 0000000..e69de29
diff --git a/testFunctions.mjs b/testFunctions.mjs
new file mode 100644
index 0000000..548b4dd
--- /dev/null
+++ b/testFunctions.mjs
@@ -0,0 +1,48 @@
+import finder  from './finder.mjs'
+
+
+const pathFolder = '/home/poule/encrypted/stockage-syncable/photos/a_dispatcher/tout'
+const sortingFolder = '/home/poule/encrypted/stockage-syncable/photos/a_dispatcher'
+
+const fileDefinition = {
+	dateStamp: '',
+	freeText: '',
+	tags: [],
+	extension: '',
+}
+
+export function TestScreenShotIsFoundAndRenamed() {
+
+	let screenShotMockFileName = 'Screenshot 2023-06-15 at 15-28-21 Instance Panoramax OSM-FR.png'
+	let screenShotMockFileNameExpected = '2023-06-15 at 15-28-21 Instance Panoramax OSM-FR -- screenshot.png'
+	let found = finder.searchAndRenameScreenshots(screenShotMockFileName)
+	console.log('found', found)
+	if (found === screenShotMockFileNameExpected) {
+		console.log('TestScreenShotIsFoundAndRenamed : test succès')
+	} else {
+		console.log('TestScreenShotIsFoundAndRenamed : FAIL:')
+		console.log(found)
+		console.log(screenShotMockFileNameExpected)
+	}
+}
+
+export function TestTagsAreDetectedInFileName() {
+	let mockFileName = '2023-06-15T10:11:12 -- screeenshot festival.png'
+	let expectedResult = ['screeenshot', 'festival']
+	let found = finder.findTagSectionInString(mockFileName)
+	if (found === expectedResult) {
+		console.info('Succès')
+	}
+}
+
+
+export function TestFindFormattedDate() {
+	let mockFileName = 'Capture d\'écran 2023-06-15T10:11:12.png'
+	let expectedResult = '2023-06-15T10:11:12'
+	let found = finder.findFormattedDate(mockFileName)
+	console.log('foundDate', found, expectedResult)
+	console.log('foundDate', found)
+	if (found === expectedResult) {
+		console.info('Succès')
+	}
+}
diff --git a/workInProgress/not_ready_functions.mjs b/workInProgress/not_ready_functions.mjs
new file mode 100644
index 0000000..fd67409
--- /dev/null
+++ b/workInProgress/not_ready_functions.mjs
@@ -0,0 +1,103 @@
+import finder from './finders'
+import fs from 'node-fs'
+
+/**
+ ----------------------- parties non réalisées -----------------------
+ * work in progress
+// TODO
+ ---------------------------------------------------------------------
+ **/
+
+function TestDownloadedTelegramPictureRename (fileName) {
+	let fileProperties = destructurateFileName(fileName)
+}
+
+function hasDifferentDateInNameThanExif (fileName) {
+	let foundDate = finder.findFormattedDate(fileName)
+
+	if (foundDate && foundDate != getExifCreationDate(fileName)) {
+		return true
+	}
+	return false
+}
+
+function moveToArchive (targetDirectory, fileFullPath) {
+	// find current directory,
+	// rename file to move it
+}
+
+function getStatisticsOnArchiveFolder (fileFullPath) {
+
+	return {
+		foldersCount: 'TODO',
+		filesWithoutSemanticName: 'TODO'
+	}
+}
+
+function getControlledVocabularyFromFiles (fileFullPath) {
+
+	let controlledVocabulary = ['TODO']
+	// find all tags
+	return controlledVocabulary
+}
+
+function moveToSortingFolder (fileFullPath) {
+	return 'TODO'
+}
+
+/**
+ * écrit un nouveau nom de fichier formatté
+ * @param convertedToName
+ * @param originalFileName
+ * @returns {*}
+ */
+function mixDateNameWithFileName (convertedToName, originalFileName) {
+	// enlever l'ancien timestamp si il existe
+	// ajouter en début de nom le nouveau timestamp avec un espace et conserver le reste du nom
+	return originalFileName
+}
+
+function TestMixingName () {
+
+	let fileMixedNewName = mixDateNameWithFileName(convertedToName, originalFileName)
+	console.log('new name', fileMixedNewName)
+
+	if (fileMixedNewName !== originalFileName) {
+		console.log('renommage =>', fileMixedNewName)
+		// renameFile(originalFileName, fileMixedNewName)
+	}
+}
+
+
+
+/**
+ * obtenir une liste des dossiers uniquement dans le dossier courant
+ * @param path
+ * @returns {*}
+ */
+function getDirectories (path) {
+	return fs.readdirSync(path).filter(function (file) {
+		return fs.statSync(path + '/' + file).isDirectory()
+	})
+}
+
+
+function convertDateToTimeInFileName (inputDate) {
+	return inputDate.replace(' ', 'T')
+}
+
+function testthings(){
+	// let list = getDirectories(pathFolder)
+// console.log('list', list)
+
+	let originalFileName = '2015-04-30T09.09.02 -- scan papier.jpg'
+	let formattedDatePIMBefore = finder.findFormattedDate(originalFileName)
+	console.log('formattedDatePIMBefore', formattedDatePIMBefore)
+
+	let creationDateFound = finder.getExifCreationDate(pathFolder + '/' + originalFileName)
+	let convertedToName = ''
+	if (creationDateFound) {
+		convertedToName = convertDateToTimeInFileName(creationDateFound)
+	}
+	console.log('convertedToName', convertedToName)
+}
\ No newline at end of file