+# n.b. this is a perfect candidate for memoization
+sub inbox_config ($$$) {
+ my ($ctx, $hdr, $txt) = @_;
+ my $ibx = $ctx->{-inbox};
+ push @$hdr, 'Content-Disposition', 'inline; filename=inbox.config';
+ my $name = dq_escape($ibx->{name});
+ my $inboxdir = '/path/to/top-level-inbox';
+ my $base_url = $ibx->base_url($ctx->{env});
+ $$txt .= <<EOS;
+; Example public-inbox config snippet for a mirror of
+; $base_url
+; See public-inbox-config(5) manpage for more details:
+; https://public-inbox.org/public-inbox-config.html
+[publicinbox "$name"]
+ inboxdir = $inboxdir
+ ; note: public-inbox before v1.2.0 used `mainrepo' instead of
+ ; `inboxdir', both remain supported after 1.2
+ mainrepo = $inboxdir
+ url = https://example.com/$name/
+ url = http://example.onion/$name/
+EOS
+ for my $k (qw(address listid infourl watchheader)) {
+ defined(my $v = $ibx->{$k}) or next;
+ $$txt .= "\t$k = $_\n" for @$v;
+ }
+ if (my $altid = $ibx->{altid}) {
+ my $altid_map = $ibx->altid_map;
+ $$txt .= <<EOF;
+ ; altid DBs may be used to provide numeric article ID lookup from
+ ; old, pre-existing sources. You can recreate them via curl(1),
+ ; gzip(1), and sqlite3(1) as documented:
+EOF
+ for (sort keys %$altid_map) {
+ $$txt .= "\t;\tcurl -XPOST $base_url$_.sql.gz | \\\n" .
+ "\t;\tgzip -dc | \\\n" .
+ "\t;\tsqlite3 $inboxdir/$_.sqlite3\n";
+ $$txt .= "\taltid = serial:$_:file=$_.sqlite3\n";
+ }
+ }