The media library

This is where the files the brand publishes around its products are kept. You upload several files at once, attach them to a unit or to a model, and get a viewing link. Deletion is protected: when a file is cited by metadata already published on chain, the server refuses it and invites you to replace the file at the same key.

#What the screen shows

A table of 20 rows per page: ID, File, Type, Size, Brand, Product and Created. Each row carries a type badge, in a different color for image, video, document or 3D model, and the file size written in bytes, in kilobytes or in megabytes. Two actions per row: "View" and "Delete".

An "All types" filter opens on Image, Video, Document and 3D model. The upload form is folded behind an Upload button. When the library is empty, the screen shows "No media" and the "Upload a file" button.

#What you can do here

Select several files at once and upload them. They go out one by one, one after the other. A failure on one file does not cancel the others, and each failure is written with the name of the file concerned.

On upload, you choose the brand, the asset type, a product to link, a model to link and an alternative text. The list itself is filtered by asset type.

"View" asks the server for a fresh signed link and opens the file in a new tab. "Delete" removes the file once its exact name is retyped, and the dialog first announces what the file will lose. The stored object is only removed after the record is deleted, and only if no other record points to the same key.

#What conditions access

The screen only shows for a signed-in administrator account, and the list is limited to the brands the account has access to. The upload button stays inactive as long as no brand is chosen, and the lists of products and models to link only fill in after that choice.

The accepted file types are JPEG, PNG, WebP, GIF, MP4, PDF, GLB and glTF, eight in all. The maximum size of a file is 10 megabytes. The list returns 20 items by default and 100 at most.

#What the screen refuses

• A content type outside the list: 400, "Content type '...' not allowed. Allowed: ...".
• A file whose first bytes do not match the declared type: 400, "File content does not match declared content type".
• A file that is too heavy: 413, "File too large (... bytes). Max: ...".
• A product or a model from another brand as the target of the link: 400, "Target product does not belong to the asset's brand" or "Target product model does not belong to the asset's brand".
• A deletion whose retyped file name does not match: 400, and the screen states that the deletion was refused and that nothing was changed.
• The deletion of a file cited by ERC-721 metadata already published: 409. The message names the units concerned and invites you to replace the file at the same key.

When one file of a multiple selection is rejected, the others are kept and the detail of each failure is displayed.