Design a recycling bin system

[EmmanuelMess]

Describe the bug

• Where would it be?
• How are files deleted?
• How are files restored?
• How are users differentiated?
• How hidden is the store of files?
• Can the storage of deleted files be accessed from other file managers?
• Does the storage of deleted files have a size limit?
• How is metadata kept?
• Is it enabled by default?

[EmmanuelMess]

If the user swaps sd cards the files should stay in the sd card otherwise it might create a weird situation where the files are on the phone, but the sd card is not connected.
To keep track of the user id we can use a ".Trash-" format, like Ubuntu.
To keep track of metadata we can use a separate plain text file, like Ubuntu.

[VishalNehra]

@EmmanuelMess Remind me again why we need metadata file.

[EmmanuelMess]

Remind me again why we need metadata file.

Some metadata gets modified on move afaik (like timestamps), and the need to save the restoration location.

[VishalNehra]

@EmmanuelMess Right correct - for restoration location. How about actually preserving last modified for move operation?

[EmmanuelMess]

Right correct - for restoration location. How about actually preserving last modified for move operation?

The operation restore must revert all changes from the delete. As the delete operation does a move all changes made by the move must be undone by restore. That includes some timestamps.

[VishalNehra]

@EmmanuelMess Yes. That's why I mentioned we should preserve created and modified date with move operation to begin with. I'm not sure what other timestamps you are referring to.
Maintaining more fields other than restore location should make sense, but I'll leave it upto the person who does the POC.

[EmmanuelMess]

Yes. That's why I mentioned we should preserve created and modified date with move operation to begin with. I'm not sure what other timestamps you are referring to.

Ah, I misunderstood then. Anyways, a test for the entire metadata should be written, so that we know nothing failed weirdly.

Maintaining more fields other than restore location should make sense, but I'll leave it upto the person who does the POC.

That is a good idea

[VishnuSanal]

• Where would it be?
• How are files deleted?
• How are files restored?
• How are users differentiated?
• How hidden is the store of files?
• Can the storage of deleted files be accessed from other file managers?
• Does the storage of deleted files have a size limit?
• How is metadata kept?
• Is it enabled by default?

@VishalNehra @EmmanuelMess @TranceLove @shuvashish76 Please give your thoughts on these

[EmmanuelMess]

See how Ubuntu does recycling bin.

[VishnuSanal]

https://github.com/andreafrancia/trash-cli

[shuvashish76]

FOSS app with Recycle Bin feature : https://f-droid.org/en/packages/com.github.axet.filemanager/

[VishalNehra]

Library is up : https://github.com/TeamAmaze/AmazeTrashBin