feat: Migrate generateFiles command with new client

BREACKING CHANGE: The `path` argument is replaced by `dirId`, and goes to second position.

Example to generate 2 files at the root of your Drive:
Before
```
ACH generateFiles <folderPath> <nbOfFile>
```

Now
```
ACH generateFiles <nbOfFile> <folderId>
```

cli.js

@@ -83,12 +83,12 @@ const handleImportDirCommand = async args => {
 }
 
 const handleGenerateFilesCommand = async args => {
-  const { path = '/', filesCount = 10, url, token } = args
+  const { dirId = 'io.cozy.files.root-dir', filesCount = 10, url, token } = args
   const ach = new ACH(token || autotoken(url, ['io.cozy.files']), url, [
     'io.cozy.files'
   ])
   await ach.connect()
-  await ach.createFiles(path, parseInt(filesCount))
+  await ach.createFiles(parseInt(filesCount), dirId)
 }
 
 const handleDropCommand = async args => {
@@ -321,14 +321,14 @@ program
   )
 
 program
-  .command('generateFiles [path] [filesCount]')
+  .command('generateFiles [filesCount] [dirId]')
   .description('Generates a given number of small files.')
   .action(
-    handleErrors(async function(path, filesCount) {
+    handleErrors(async function(filesCount, dirId) {
       await handleGenerateFilesCommand({
         url: program.url,
         token: program.token,
-        path,
+        dirId,
         filesCount
       })
     })

libs/ACH.js

@@ -121,7 +121,7 @@ const methods = {
   },
   createFiles: {
     method: createFiles,
-    oldClient: true
+    oldClient: false
   },
   export: {
     method: exportDocs,

libs/createFiles.js

@@ -1,16 +1,26 @@
 const ProgressBar = require('progress')
 const faker = require('faker')
+const {
+  uploadFileWithConflictStrategy
+} = require('cozy-client/dist/models/file')
 
-module.exports = async (client, path, filesCount) => {
-  const { forceCreateByPath } = client.files
-
+module.exports = async (
+  client,
+  filesCount,
+  dirId = 'io.cozy.files.root-dir'
+) => {
   const bar = new ProgressBar(':bar', { total: filesCount })
 
   for (let i = 0; i < filesCount; i++) {
-    const name = faker.datatype.uuid()
-    await forceCreateByPath(`${path}/${name}.txt`, name, {
-      name: `${name}.txt`,
-      contentType: 'text/plain'
+    const name = faker.lorem.word()
+    const content = faker.lorem.paragraph()
+    const buffer = new Buffer.from(content, 'utf-8')
+
+    await uploadFileWithConflictStrategy(client, buffer.toString(), {
+      name,
+      dirId,
+      contentType: 'text/plain',
+      conflictStrategy: 'rename'
     })
     bar.tick()
   }