Delete Avatar Problem

There is a problem something like this, reproduce:

1. Create 2 organizations
2. Set their avatars as same image
3. Delete one organization

Then you will see other organization's avatar reset to default gitea avatar, becouse image removed from disk.

This is same:

• Organization avatar
• User avatar
• Repository avatar

My opinions for solution:

1. Check if there are other same avatar name before remote from disk
2. Check if there are other same avatar name before set avatar and give new name if there

[guillep2k]

The filename is a hash of the avatar contents. For this, I think we should add the owner as part of the hash and force the names to be different. Otherwise, we'll have to keep a reference count for every file.

IMHO First one does not affect? If a user add same image to multiple organization then remove one

[guillep2k]

If your NASA organization adds planet.png as avatar, the file is uploaded as:

data/attachments/e/4/e4dc1049-68cd-4ed0-9636-41c0a04b0a69

The name is calculated by hashing its content. If ESA adds the same picture of a planet (no matter the file name, only the byte-by-byte content of the file), then it will be named again:

data/attachments/e/4/e4dc1049-68cd-4ed0-9636-41c0a04b0a69

That's why if ESA deletes its file, NASA's file gets deleted too. However, if we apply other metadata to the hash input, the hash will be different each case, for example:

NASA's planet.png       fe5156a4-6562-49a6-8732-1dbb48639560
ESA's planet.png        b519f855-1e11-4893-b64e-95ca221758cd

Even if they are the same file.

That should solve the problem, because if ESA deletes or changes its avatar, only b519f855-1e11-4893-b64e-95ca221758cd will be deleted, while fe5156a4-6562-49a6-8732-1dbb48639560 will remain untouched.

[stale]

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