tldr: bulk-downloads of all files in a folder/share

My User Story

I have a folder full of pictures that i want to share with a friend. (f.e. the photos from a shared vacation)

• I want my friend to be able to view the folder and individidual files in the browser (that works great already)
• I want my friend to be able to download all files from the folder. Currently, he would need to download each image individually.

How to implement & considerations

I see two options really:

1. All files are concetenated on-the-fly into 1 big file (f.e. a .zip or .tar file)
2. All files are downloaded individually

Option 1. is the nicer one imho, its also how most other services do it (f.e. Google drive, Dropbox etc.). But it might need a cache directory? That would kinda contradict the minimalist "leave no marks on your filesystem" goal of pupcloud.

Option 2. has no dependencies, but browsers do not like a client-side invocation of lots of file downloads. (Because Its not very userfriendly - what happens on name conflicts etc.)