Add a full data portability feature

[teolemon]

Add a full data portability feature

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1. Import/Export of Lists #3830
   ⭐ top issue User lists good first issue lists 🎯 P1 +5
2. Allow to export History as a CSV file
3. Allow to export Scan History as a CSV file
4. Preferences ? As a link for the website ?

• Notification on successful export to open the file
• Notification action button to share the file
• Filename should be clear scan-history.csv, shopping-list.csv with a timestamp of export to avoid overwriting older exports
• product_name, brand, barcode, timestamp of last scan, last access if applicable

Why

• Outstanding GDPR compliance
• Being more helpful with lists

Part of

• 🎯 What can I work on ? #525

[g123k]

Is-there a standard for this kind of data?
Or can we do whatever we want?

[teolemon]

We can do whatever we want. Heck, we could even create a standard for food scan histories ;-)

[monsieurtanuki]

After the wikipedia, we could be the Braille or the Morse of food! 🎉

Just checking: for us, a barcode is only digits?

[g123k]

After the wikipedia, we could be the Braille or the Morse of food! 🎉

Just checking: for us, a barcode is only digits?

Yes, barcodes are only numbers-based, as EAN stands for European Article Numbering

In parallel, I've checked schema.org and I think that using the Product type might be interesting in our case: https://schema.org/Product

[teolemon]

do we dump product data, or just the lists of EANs + timestamp ?

Note that we are the defacto standard, and that no one else is really implementing anything at this point.
If we were to dump without thought, what's the list of fields?
Also, there's a way to generate CSVs from the website

[g123k]

If we want to be retro-compatible with the old Android app (I have to check for iOS), only 3 fields are exported in a CSV:

• Barcode
• Name
• Brand

[g123k]

What about supporting iCloud on iOS?
https://pub.dev/packages/icloud_storage
https://pub.dev/packages/cloud_kit

And there's the same for Android with Google Drive: https://medium.com/@developerjo0517/backup-and-load-data-with-google-drive-in-flutter-1d901fd38f70

[teolemon]

We certainly can and should. Is there a way to get backup consent ?
It would be a way to stress that we don't save your personal data to the OFF servers.
We would also need a stupid db dump to the phone memory for F-Droid

[g123k]

We certainly can and should. Is there a way to get backup consent ? It would be a way to stress that we don't save your personal data to the OFF servers. We would also need a stupid db dump to the phone memory for F-Droid

We could ask for consent the first time the user creates a list.
But yes, F-Droid is still an issue here and in that case, the basic import/export by CSV would do the job.