feat: Upload a folder to knowledgebase (#17026)

Co-authored-by: Silow9 <soulskytony@gmail.com>

web/app/components/datasets/create/file-uploader/index.tsx

     e.stopPropagation()
     e.target === dragRef.current && setDragging(false)
   }
+  type FileWithPath = {
+    relativePath?: string
+  } & File
+  const traverseFileEntry = useCallback(
+    (entry: any, prefix = ''): Promise<FileWithPath[]> => {
+      return new Promise((resolve) => {
+        if (entry.isFile) {
+          entry.file((file: FileWithPath) => {
+            file.relativePath = `${prefix}${file.name}`
+            resolve([file])
+          })
+        }
+        else if (entry.isDirectory) {
+          const reader = entry.createReader()
+          const entries: any[] = []
+          const read = () => {
+            reader.readEntries(async (results: FileSystemEntry[]) => {
+              if (!results.length) {
+                const files = await Promise.all(
+                  entries.map(ent =>
+                    traverseFileEntry(ent, `${prefix}${entry.name}/`),
+                  ),
+                )
+                resolve(files.flat())
+              }
+              else {
+                entries.push(...results)
+                read()
+              }
+            })
+          }
+          read()
+        }
+        else {
+          resolve([])
+        }
+      })
+    },
+    [],
+  )
 
-  const handleDrop = useCallback((e: DragEvent) => {
-    e.preventDefault()
-    e.stopPropagation()
-    setDragging(false)
-    if (!e.dataTransfer)
-      return
-
-    let files = [...e.dataTransfer.files] as File[]
-    if (notSupportBatchUpload)
-      files = files.slice(0, 1)
-
-    const validFiles = files.filter(isValid)
-    initialUpload(validFiles)
-  }, [initialUpload, isValid, notSupportBatchUpload])
-
+  const handleDrop = useCallback(
+    async (e: DragEvent) => {
+      e.preventDefault()
+      e.stopPropagation()
+      setDragging(false)
+      if (!e.dataTransfer) return
+      const nested = await Promise.all(
+        Array.from(e.dataTransfer.items).map((it) => {
+          const entry = (it as any).webkitGetAsEntry?.()
+          if (entry) return traverseFileEntry(entry)
+          const f = it.getAsFile?.()
+          return f ? Promise.resolve([f]) : Promise.resolve([])
+        }),
+      )
+      let files = nested.flat()
+      if (notSupportBatchUpload) files = files.slice(0, 1)
+      const valid = files.filter(isValid)
+      initialUpload(valid)
+    },
+    [initialUpload, isValid, notSupportBatchUpload, traverseFileEntry],
+  )
   const selectHandle = () => {
     if (fileUploader.current)
       fileUploader.current.click()

web/i18n/de-DE/dataset-creation.ts

     },
     uploader: {
       title: 'Textdatei hochladen',
-      button: 'Datei hierher ziehen oder',
+      button: 'Dateien und Ordner hierher ziehen oder klicken',
       browse: 'Durchsuchen',
       tip: 'Unterstützt {{supportTypes}}. Maximal {{size}}MB pro Datei.',
       validation: {

web/i18n/en-US/dataset-creation.ts

     },
     uploader: {
       title: 'Upload file',
-      button: 'Drag and drop file, or',
+      button: 'Drag and drop file or folder, or',
       browse: 'Browse',
       tip: 'Supports {{supportTypes}}. Max {{size}}MB each.',
       validation: {

web/i18n/es-ES/dataset-creation.ts

     },
     uploader: {
       title: 'Cargar archivo',
-      button: 'Arrastra y suelta el archivo, o',
+      button: 'Arrastre y suelte archivos o carpetas, o',
       browse: 'Buscar',
       tip: 'Soporta {{supportTypes}}. Máximo {{size}}MB cada uno.',
       validation: {

web/i18n/fa-IR/dataset-creation.ts

     },
     uploader: {
       title: 'بارگذاری فایل',
-      button: 'کشیدن و رها کردن فایل، یا',
+      button: 'فایل ها یا پوشه ها را بکشید و رها کنید یا',
       browse: 'مرور',
       tip: 'پشتیبانی از {{supportTypes}}. حداکثر {{size}}MB هر کدام.',
       validation: {

web/i18n/fr-FR/dataset-creation.ts

     },
     uploader: {
       title: 'Télécharger le fichier texte',
-      button: 'Glisser et déposer le fichier, ou',
+      button: 'Faites glisser et déposez des fichiers ou des dossiers, ou',
       browse: 'Parcourir',
       tip: 'Prend en charge {{supportTypes}}. Max {{size}}MB chacun.',
       validation: {

web/i18n/hi-IN/dataset-creation.ts

     },
     uploader: {
       title: 'फ़ाइल अपलोड करें',
-      button: 'फ़ाइल खींचें और छोड़ें, या',
+      button: 'फ़ाइलों या फ़ोल्डरों को खींचें और छोड़ें, या',
       browse: 'ब्राउज़ करें',
       tip: 'समर्थित {{supportTypes}}। प्रत्येक अधिकतम {{size}}MB।',
       validation: {

web/i18n/it-IT/dataset-creation.ts

     },
     uploader: {
       title: 'Carica file',
-      button: 'Trascina e rilascia il file, o',
+      button: 'Trascina e rilascia file o cartelle, oppure',
       browse: 'Sfoglia',
       tip: 'Supporta {{supportTypes}}. Max {{size}}MB ciascuno.',
       validation: {

web/i18n/ja-JP/dataset-creation.ts

     },
     uploader: {
       title: 'テキストファイルをアップロード',
-      button: 'ファイルをドラッグ＆ドロップするか',
+      button: 'ファイルまたはフォルダをドラッグアンドドロップする',
       browse: '参照',
       tip: '{{supportTypes}}をサポートしています。1つあたりの最大サイズは{{size}}MBです。',
       validation: {

web/i18n/ko-KR/dataset-creation.ts

     },
     uploader: {
       title: '텍스트 파일 업로드',
-      button: '파일을 끌어다 놓거나',
+      button: '파일이나 폴더를 끌어서 놓기',
       browse: '찾아보기',
       tip: '{{supportTypes}}을(를) 지원합니다. 파일당 최대 크기는 {{size}}MB입니다.',
       validation: {

web/i18n/pl-PL/dataset-creation.ts

     },
     uploader: {
       title: 'Prześlij plik tekstowy',
-      button: 'Przeciągnij i upuść plik lub',
+      button: 'Przeciągnij i upuść pliki lub foldery lub',
       browse: 'Przeglądaj',
       tip: 'Obsługuje {{supportTypes}}. Maksymalnie {{size}}MB każdy.',
       validation: {

web/i18n/pt-BR/dataset-creation.ts

     },
     uploader: {
       title: 'Enviar arquivo de texto',
-      button: 'Arraste e solte o arquivo, ou',
+      button: 'Arraste e solte arquivos ou pastas, ou',
       browse: 'Navegar',
       tip: 'Suporta {{supportTypes}}. Máximo de {{size}}MB cada.',
       validation: {

web/i18n/ro-RO/dataset-creation.ts

     },
     uploader: {
       title: 'Încărcați fișier text',
-      button: 'Trageți și fixați fișierul, sau',
+      button: 'Trageți și plasați fișiere sau foldere sau',
       browse: 'Răsfoire',
       tip: 'Acceptă {{supportTypes}}. Maxim {{size}}MB fiecare.',
       validation: {

web/i18n/ru-RU/dataset-creation.ts

     },
     uploader: {
       title: 'Загрузить файл',
-      button: 'Перетащите файл или',
+      button: 'Перетащите файлы или папки или',
       browse: 'Обзор',
       tip: 'Поддерживаются {{supportTypes}}. Максимум {{size}} МБ каждый.',
       validation: {

web/i18n/sl-SI/dataset-creation.ts

     },
     uploader: {
       title: 'Naloži datoteko',
-      button: 'Povleci in spusti datoteko ali',
+      button: 'Povleci in spusti datoteke ali mape oz',
       browse: 'Prebrskaj',
       tip: 'Podprti tipi datotek: {{supportTypes}}. Največ {{size}}MB na datoteko.',
       validation: {

web/i18n/th-TH/dataset-creation.ts

     },
     uploader: {
       title: 'อัปโหลดไฟล์',
-      button: 'ลากและวางไฟล์ หรือ',
+      button: 'ลากและวางไฟล์หรือโฟลเดอร์หรือ',
       browse: 'เล็ม',
       tip: 'รองรับ {{supportTypes}} สูงสุด {{size}}MB แต่ละตัว',
       validation: {

web/i18n/tr-TR/dataset-creation.ts

     },
     uploader: {
       title: 'Dosya yükle',
-      button: 'Dosyayı sürükleyip bırakın veya',
+      button: 'Dosyaları veya klasörleri sürükleyip bırakın veya',
       browse: 'Göz atın',
       tip: 'Destekler {{supportTypes}}. Her biri en fazla {{size}}MB.',
       validation: {

web/i18n/uk-UA/dataset-creation.ts

     },
     uploader: {
       title: 'Завантажити текстовий файл',
-      button: 'Перетягніть файл або',
+      button: 'Перетягніть файли або папки або',
       browse: 'Оберіть',
       tip: 'Підтримуються {{supportTypes}}. Максимум {{size}} МБ кожен.',
       validation: {

web/i18n/vi-VN/dataset-creation.ts

     },
     uploader: {
       title: 'Tải lên tệp văn bản',
-      button: 'Kéo và thả tệp, hoặc',
+      button: 'Kéo và thả các tập tin hoặc thư mục, hoặc',
       browse: 'Chọn tệp',
       tip: 'Hỗ trợ {{supportTypes}}. Tối đa {{size}}MB mỗi tệp.',
       validation: {

web/i18n/zh-Hans/dataset-creation.ts

     },
     uploader: {
       title: '上传文本文件',
-      button: '拖拽文件至此，或者',
+      button: '拖拽文件或文件夹至此，或者',
       browse: '选择文件',
       tip: '已支持 {{supportTypes}}，每个文件不超过 {{size}}MB。',
       validation: {

web/i18n/zh-Hant/dataset-creation.ts

     },
     uploader: {
       title: '上傳文字檔案',
-      button: '拖拽檔案至此，或者',
+      button: '拖拽檔案或檔案夾至此，或者',
       browse: '選擇檔案',
       tip: '已支援 {{supportTypes}}，每個檔案不超過 {{size}}MB。',
       validation: {