Reposts in feeds do not contain enough unique data

[csuhta]

I am using https://bsky.social/xrpc/app.bsky.feed.getAuthorFeed

When I fetch an author's feed, repost objects are the same as regular post objects, except the repost object also contains a reason object. The reason object doesn't contain its own at:// URI, it only contains a by object and an indexedAt field.

If I was storing these posts in a database or otherwise operating on them on a per-user basis, it is very hard to differentiate reposts across accounts.

As an example:

User A's authorFeed:
Post 2
Post 1 (Repost)
Post 1

User B's authorFeed:
Post 1 (Repost)
Post 3

In this example, there is only one unique at:// URI for Post 1 across all three versions of it, but I may want to keep track of the repost-posts separately for particular users. I would have to invent my own ID somehow for that.

In other social media systems, a repost is a skinny "wrapper" post with its own ID that references the original post. How am I supposed to operate on individual repost objects? Shouldn't a repost have its own URI or unique identifier?