[tests-only][full-ci]add test to upload folder via drag-n-drop

tests/e2e/cucumber/features/smoke/upload.feature

@@ -71,7 +71,10 @@ Feature: Upload
       | resource   |
       | simple.pdf |
     And "Alice" closes the file viewer
-
+    #upload folder via drag-n-drop
+    And "Alice" uploads the following resources via drag-n-drop
+      | resource          |
+      | Folder,With,Comma |
     # upload empty folder
     And "Alice" uploads the following resources
       | resource | type   |

tests/e2e/support/utils/dragDrop.ts

@@ -1,37 +1,106 @@
 import { readFileSync } from 'fs'
 import { Page } from '@playwright/test'
+import fs from 'fs'
+import path from 'path'
+import { promises as fsPromises } from 'fs'
 
 interface File {
-  name: string
-  path: string
+    name: string
+    path: string
 }
 
 interface FileBuffer {
-  name: string
-  bufferString: string
+    name: string
+    bufferString: string
+}
+
+
+async function getAllFiles(dirPath: string, baseName: string = ''): Promise<File[]> {
+    const results: File[] = []
+    const items = await fsPromises.readdir(dirPath)
+
+    // Add the root directory to results
+    results.push({
+        name: baseName ? `${baseName}/` : '',  // Add '/' to denote directory if baseName is not empty
+        path: dirPath
+    })
+    for (const item of items) {
+        const fullPath = path.join(dirPath, item)
+        const stats = await fsPromises.stat(fullPath)
+        if (stats.isDirectory()) {
+            // results.push({
+            //     name: path.join(baseName, item),
+            //     path: fullPath
+            // })
+            // Recursively process subdirectories
+            results.push(...(await getAllFiles(fullPath, path.join(baseName, item))))
+        } else if (stats.isFile()) {
+            results.push({
+                name: path.join(baseName, item),
+                path: fullPath
+            })
+        }
+    }
+    // console.log(results)
+    return results
 }
 
 export const dragDropFiles = async (page: Page, resources: File[], targetSelector: string) => {
-  const files = resources.map((file) => ({
-    name: file.name,
-    bufferString: JSON.stringify(Array.from(readFileSync(file.path)))
-  }))
-
-  await page.evaluate<Promise<void>, [FileBuffer[], string]>(
-    ([files, targetSelector]) => {
-      const dropArea = document.querySelector(targetSelector)
-      const dt = new DataTransfer()
-
-      for (const file of files) {
-        const buffer = Buffer.from(JSON.parse(file.bufferString))
-        const blob = new Blob([buffer])
-        dt.items.add(new File([blob], file.name))
-      }
-
-      dropArea.dispatchEvent(new DragEvent('drop', { dataTransfer: dt }))
-
-      return Promise.resolve()
-    },
-    [files, targetSelector]
-  )
+    const allFiles: File[] = []
+
+    for (const resource of resources) {
+        const stats = await fsPromises.stat(resource.path)
+        if (stats.isDirectory()) {
+            const filesInDir = await getAllFiles(resource.path, resource.name)
+            allFiles.push(...filesInDir)
+        } else if (stats.isFile()) {
+            allFiles.push(resource)
+        }
+    }
+    console.log(allFiles)
+    const filesBuffer: FileBuffer[] = await Promise.all(
+        allFiles.map(async (file) => {
+            if (fs.statSync(file.path).isDirectory()) {
+                return {
+                    name: file.name,
+                    bufferString: null
+                }
+            } else {
+                const buffer = await fsPromises.readFile(file.path)
+                return {
+                    name: file.name,
+                    bufferString: JSON.stringify(Array.from(buffer))
+                }
+            }
+        })
+    )
+
+    await page.evaluate<Promise<void>, [FileBuffer[], string]>(
+        async ([filesBuffer, targetSelector]) => {
+            const dropArea = document.querySelector(targetSelector)
+            if (!dropArea) {
+                throw new Error(`Drop area with selector ${targetSelector} not found.`)
+            }
+
+            const dt = new DataTransfer()
+
+            for (const file of filesBuffer) {
+                if (file.bufferString === null) {
+                    // Placeholder for handling directory upload
+                    const dirBlob = new Blob([])
+                    dt.items.add(new File([dirBlob], file.name))
+                } else {
+                    const buffer = new Uint8Array(JSON.parse(file.bufferString))
+                    const blob = new Blob([buffer])
+                    const fileObj = new File([blob], file.name)
+                    dt.items.add(fileObj)
+                }
+            }
+
+            dropArea.dispatchEvent(new DragEvent('drop', { dataTransfer: dt }))
+
+            return Promise.resolve()
+        },
+        [filesBuffer, targetSelector]
+    )
 }