Pass current file name through to export command (#4503)

* Pass current file name through to export command

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu-latest-8-cores)

* Oops I needed a couple other things, not just that one line change

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu-latest-8-cores)

* Undo overriding of internal zipped file names
That was liable to cause conflicts and whatnot per @jessfraz feedback

* Update E2E test that was still looking for `output.gltf`

* Missed one other test my bad

* Should've just grepped for output.gltf to begin with

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Paul Tagliamonte <paul@zoo.dev>

src/lib/exportSave.ts

@@ -68,7 +68,16 @@ const save_ = async (file: ModelingAppFile, toastId: string) => {
 }
 
 // Saves files locally from an export call.
-export async function exportSave(data: ArrayBuffer, toastId: string) {
+// We override the file's name with one passed in from the client side.
+export async function exportSave({
+  data,
+  fileName,
+  toastId,
+}: {
+  data: ArrayBuffer
+  fileName: string
+  toastId: string
+}) {
   // This converts the ArrayBuffer to a Rust equivalent Vec<u8>.
   let uintArray = new Uint8Array(data)
 
@@ -80,9 +89,10 @@ export async function exportSave(data: ArrayBuffer, toastId: string) {
       zip.file(file.name, new Uint8Array(file.contents), { binary: true })
     }
     return zip.generateAsync({ type: 'array' }).then((contents) => {
-      return save_({ name: 'output.zip', contents }, toastId)
+      return save_({ name: `${fileName || 'output'}.zip`, contents }, toastId)
     })
   } else {
+    files[0].name = fileName || files[0].name
     return save_(files[0], toastId)
   }
 }