Add a "dry run" mode to recalc-single-result, for easier testing.

diff --git a/recalc-single-result.pl b/recalc-single-result.pl
index 8c6923b83c10977888d589c20870e87ea84faf3a..efcd4c73891ef5a8af3aec31a168596261180bf0 100755 (executable)
--- a/recalc-single-result.pl
+++ b/recalc-single-result.pl
@@ -5,11 +5,19 @@ use DBI;
 use CGI;
 use CGI::Carp qw(fatalsToBrowser);
 require 'foosball.pm';
+no warnings 'once';
+
+my $dryrun = 0;
+if (defined($ARGV[0])) {
+       $dryrun = 1;
+       $foosball::initial_rd = $ARGV[0];
+       $foosball::c = $ARGV[1];
+}
 
 my $dbh = foosball::db_connect();
 $dbh->{AutoCommit} = 0;
 
-$dbh->do('delete from single_rating');
+$dbh->do('delete from single_rating') unless $dryrun;
 
 my %ratings = ();
 my $q = $dbh->prepare('select *,extract(epoch from gametime) as eptime from single_results order by gametime');
@@ -44,19 +52,21 @@ while (my $ref = $q->fetchrow_hashref) {
 
        $cll += log($likelihood);
 
-       printf("%-10s - %-10s: %u - %u, new ratings %u/%u %u/%u [$likelihood]\n",
-               $ref->{'username1'}, $ref->{'username2'}, $ref->{'score1'},
-               $ref->{'score2'}, $newr1, $newrd1, $newr2, $newrd2);
-       $dbh->do('insert into single_rating values (?,?,?,?,?)', undef,
-               $ref->{'username1'}, $ref->{'gametime'}, $newr1, $newrd1, $newr1-$rating1);
-       $dbh->do('insert into single_rating values (?,?,?,?,?)', undef,
-               $ref->{'username2'}, $ref->{'gametime'}, $newr2, $newrd2, $newr2-$rating2);
+       unless ($dryrun) {
+               printf("%-10s - %-10s: %u - %u, new ratings %u/%u %u/%u [$likelihood]\n",
+                       $ref->{'username1'}, $ref->{'username2'}, $ref->{'score1'},
+                       $ref->{'score2'}, $newr1, $newrd1, $newr2, $newrd2);
+               $dbh->do('insert into single_rating values (?,?,?,?,?)', undef,
+                       $ref->{'username1'}, $ref->{'gametime'}, $newr1, $newrd1, $newr1-$rating1);
+               $dbh->do('insert into single_rating values (?,?,?,?,?)', undef,
+                       $ref->{'username2'}, $ref->{'gametime'}, $newr2, $newrd2, $newr2-$rating2);
+       }
 
        $ratings{$ref->{'username1'}} = [ $newr1, $newrd1, $ref->{'eptime'} ];
        $ratings{$ref->{'username2'}} = [ $newr2, $newrd2, $ref->{'eptime'} ];
 }
 
-$dbh->commit;
+$dbh->commit unless $dryrun;
 $dbh->disconnect;
 
 printf "\nCombined negative log-likelihood (smaller value means a better model): %f\n",