[PATCH 2/2] lei_mail_sync: reject IMAP URLs w/o UIDVALIDITY

[Eric Wong <e@80x24.org>]

It's inappropriate to store sync information without
UIDVALIDITY, so add an assertion to prevent it.
---
 lib/PublicInbox/LeiMailSync.pm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/PublicInbox/LeiMailSync.pm b/lib/PublicInbox/LeiMailSync.pm
index b2986686..63076fa1 100644
--- a/lib/PublicInbox/LeiMailSync.pm
+++ b/lib/PublicInbox/LeiMailSync.pm
@@ -7,6 +7,7 @@ use strict;
 use v5.10.1;
 use DBI;
 use PublicInbox::ContentHash qw(git_sha);
+use Carp ();
 
 sub dbh_new {
 	my ($self, $rw) = @_;
@@ -88,6 +89,10 @@ UPDATE folders SET loc = ? WHERE fid = ?
 EOM
 			return $fid;
 		}
+	} elsif ($rw && $folder =~ m!\Aimaps?://!i) {
+		require PublicInbox::URIimap;
+		PublicInbox::URIimap->new($folder)->uidvalidity //
+			Carp::croak("BUG: $folder has no UIDVALIDITY");
 	}
 	return unless $rw;