Implement Backup & Restore

[jaredly]

as requested in #1668 and #2103

I'm quite interested in being able to transfer read information, as I'm switching to a new phone and am in the middle of quite a few books 😅

NB I haven't written very much kotlin, so it's entirely likely that I've organized things weirdly. Let me know how you'd like things to be rearranged! I was pretty much just blundering around to get it to compile & work 🙃

But at the end of the day, it does work! I based my implementation fairly loosely on https://stackoverflow.com/a/73205884/290784. I'm exporting the whole sqlite file (including journaling files) as a .zip archive, and then to restore, I overwrite whatever sqlite database exists & restarting the app.
(It might be worth putting up an alert or something saying "Restoring will delete all your current data!" but I wasn't sure how to make an alert)

Here's a video of it in action:
https://github.com/PaulWoitaschek/Voice/assets/112170/d512e8b8-2762-4945-8a54-11ac84c3c952

[jaredly]

this was required for me to be able to build the project the first time, but I can back it out if you want

[jgilmore]

Yeah, good to know this isn't implemented yet. Too bad I can't see the reading positions on my old phone, since the SD card that had the books on it has been moved to the new phone already.

So I'm SOL I guess.

So I guess I should ask if this pull request backs up and restores the reading positions even for books that are no longer available on the device?

[jaredly]

@jgilmore I believe it does

[eturk1]

Thanks for the effort to implement a manual backup/restore!

First, is Android's Auto Backup implemented?
https://developer.android.com/identity/data/autobackup
Moving to a new phone should work automatically

[jaredly]

doesn't seem to have worked when I moved to a new phone the most recent time

[eturk1]

doesn't seem to have worked when I moved to a new phone the most recent time

Is it set in the manifest?
How do we debug auto backup, check for the backup in Drive?