"Undo" button when checking an item off

[maartendeblock]

Hi,

It would be great to have an undo button when you checked off an item, just like normal Todoist client.

Thank you for your great work!

[mwakerman]

Hi @maartendeblock, I agree. This is a good first issue for someone wanting to contribute so I've added the tag. Thanks for the suggestion.

[vidushirai]

Hey @mwakerman, is it cool if I work on this? I've started it in my branch here https://github.com/vidushirai/kanbanist/tree/undo-button but I'm still working on using redux to store the last completed item instead of storing it in the state.

[mwakerman]

Hi @vidushirai, I've been thinking about this particular issue for a while. For checking off a single item, this would not be difficult to just provide an undo button. But for other API changes (renaming lists, re-ordering lists, adding/deleting lists etc.) I thought it might be a better approach to provide "temporary undo" by delaying API actions (the same way that Todoist and Gmail do) where there's an undo option available for 5 seconds or so before an action is "committed". This would be harder to implement but provide a more general solution to undoing changes. I haven't written any code but my thoughts on an implementation are:

• In todoist-persistence.js middleware, add a setTimout delay to all server changes.
• Provide a callback to all actions called isCancelled which returns true or false and is called at the end of the setTimeout before the Todoist API is hit.
• If isCancelled is true then we don't make the API request and we do a fetch to replace the local redux state with the "undone" server state.

What do you think?

[vidushirai]

I like this approach better, i didn't know that's how Todoist and Gmail do it. I'd like to try implementing it this way and see how it goes.

[XuanLi-Leong]

Hi! Thought you might want to know that there's also a Todoist API to uncomplete an item. https://developer.todoist.com/sync/v7/#uncomplete-items