Function deltachat::imex::get_backup

pub async fn get_backup(context: &Context, qr: Qr) -> Result<()>

Contacts a backup provider and receives the backup from it.

This uses a QR code to contact another instance of deltachat which is providing a backup using the BackupProvider. Once connected it will authenticate using the secrets in the QR code and retrieve the backup.

This is a long running operation which will only when completed.

Using Qr as argument is a bit odd as it only accepts one specific variant of it. It does avoid having [iroh::provider::Ticket] in the primary API however, without having to revert to untyped bytes.