Keep identity of activities regardless of file system location

[martin-ueding]

I've recently switched to activity files and noticed that they are considered a new activity when it is renamed or moved. This means that one has duplicate activities. This is not very nice.

Therefore it would be good if the identity of an activity was based on the hash of the activity file itself. When it is renamed, the metadata could be updated. When it is moved, the metadata like kind or equipment can be updated. In both cases it can be found via the hash of the file which doesn't change.

Deleting activities isn't possible due to the incremental nature of the explorer tiles. Removing an activity would make it hard to erase the visited tiles and almost impossible to do the correction to the tile history. In those cases we would have to delete the tile history and tile visits and create them again.

[martin-ueding]

I now use the Blake-2b hash of the activity file contents to form the identity of the activity. If one renames it, it will be picked up as the same activity and just update the metadata.

Will come in version 0.20.0

[martin-ueding]

Version 0.20.0 is released you can update and try it out. If the issue persists, please reopen this ticket.