+sub output_json {
+ my $info = $engine->{'info'};
+
+ my $json = {};
+ $json->{'position'} = $pos_calculating;
+ $json->{'id'} = $engine->{'id'};
+ $json->{'score'} = long_score($info, $pos_calculating, '');
+
+ $json->{'nodes'} = $info->{'nodes'};
+ $json->{'nps'} = $info->{'nps'};
+ $json->{'depth'} = $info->{'depth'};
+ $json->{'tbhits'} = $info->{'tbhits'};
+ $json->{'seldepth'} = $info->{'seldepth'};
+
+ # single-PV only for now
+ $json->{'pv_uci'} = $info->{'pv'};
+ $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv'}}) ];
+
+ my %refutation_lines = ();
+ for my $move (keys %refutation_moves) {
+ my $m = $refutation_moves{$move};
+ my $pretty_move = "";
+ my @pretty_pv = ();
+ eval {
+ $pretty_move = join('', prettyprint_pv($pos_calculating->{'board'}, $move));
+ @pretty_pv = prettyprint_pv($pos_calculating->{'board'}, $move, @{$m->{'pv'}});
+ };
+ $refutation_lines{$move} = {
+ sort_key => $pretty_move,
+ depth => $m->{'depth'},
+ score_sort_key => score_sort_key($refutation_moves{$move}, $pos_calculating, '', 1),
+ pretty_score => short_score($refutation_moves{$move}, $pos_calculating, '', 1),
+ pretty_move => $pretty_move,
+ pv_pretty => \@pretty_pv,
+ };
+ eval {
+ $refutation_lines{$move}->{'pv_uci'} = [ $move, @{$m->{'pv'}} ];
+ };
+ }
+ $json->{'refutation_lines'} = \%refutation_lines;
+
+ open my $fh, ">analysis.json.tmp"
+ or return;
+ print $fh JSON::XS::encode_json($json);
+ close $fh;
+ rename("analysis.json.tmp", "analysis.json");
+}
+