fix: align behaviour between go and js for content without paths (#3385)

Aligns behaviour between js and go when no path is present during an import
- we now pass an empty string instead of `'unknown'`.

packages/interface-ipfs-core/src/add-all.js

@@ -171,6 +171,28 @@ module.exports = (common, options) => {
       expect(root.cid.toString()).to.equal(fixtures.directory.cid)
     })
 
+    it('should receive progress path as empty string when adding content without paths', async function () {
+      const content = (name) => fixtures.directory.files[name]
+      const progressSizes = {}
+
+      const dirs = [
+        content('pp.txt'),
+        content('holmes.txt'),
+        content('jungle.txt')
+      ]
+
+      const total = {
+        '': dirs.reduce((acc, curr) => acc + curr.length, 0)
+      }
+
+      const handler = (bytes, path) => {
+        progressSizes[path] = bytes
+      }
+
+      await drain(ipfs.addAll(dirs, { progress: handler }))
+      expect(progressSizes).to.deep.equal(total)
+    })
+
     it('should receive file name from progress event', async () => {
       const receivedNames = []
       function handler (p, name) {

packages/ipfs-http-server/src/api/resources/files-regular.js

@@ -260,7 +260,7 @@ exports.add = {
       multipart(request),
       async function * (source) {
         for await (const entry of source) {
-          currentFileName = entry.name || 'unknown'
+          currentFileName = entry.name || ''
 
           if (entry.type === 'file') {
             filesParsed = true