From fc979d0122fb9378b931241ea3442c0bd1c40581 Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sesse@debian.org>
Date: Wed, 3 Oct 2007 22:35:20 +0200
Subject: [PATCH] Add recalc scripts.

---
 recalc-double-result.pl | 77 +++++++++++++++++++++++++++++++++++++++++
 recalc-single-result.pl | 48 +++++++++++++++++++++++++
 2 files changed, 125 insertions(+)
 create mode 100755 recalc-double-result.pl
 create mode 100755 recalc-single-result.pl

diff --git a/recalc-double-result.pl b/recalc-double-result.pl
new file mode 100755
index 0000000..7395800
--- /dev/null
+++ b/recalc-double-result.pl
@@ -0,0 +1,77 @@
+#! /usr/bin/perl
+use strict;
+use warnings;
+use DBI;
+use CGI;
+use CGI::Carp qw(fatalsToBrowser);
+require 'foosball.pm';
+
+my $dbh = foosball::db_connect();
+$dbh->{AutoCommit} = 0;
+
+$dbh->do('delete from double_rating');
+
+my %ratings = ();
+my $q = $dbh->prepare('select * from double_results order by gametime');
+$q->execute;
+
+while (my $ref = $q->fetchrow_hashref) {
+	for my $user (($ref->{'team1_username1'}, $ref->{'team1_username2'},
+	               $ref->{'team2_username1'}, $ref->{'team2_username2'})) {
+		if (!exists($ratings{$user})) {
+			$ratings{$user} = [ 1500, 350 ];
+		}
+	}
+	
+	my $rating1_1 = $ratings{$ref->{'team1_username1'}}->[0];
+	my $rd1_1 = $ratings{$ref->{'team1_username1'}}->[1];
+	my $rating1_2 = $ratings{$ref->{'team1_username2'}}->[0];
+	my $rd1_2 = $ratings{$ref->{'team1_username2'}}->[1];
+	my $rating2_1 = $ratings{$ref->{'team2_username1'}}->[0];
+	my $rd2_1 = $ratings{$ref->{'team2_username1'}}->[1];
+	my $rating2_2 = $ratings{$ref->{'team2_username2'}}->[0];
+	my $rd2_2 = $ratings{$ref->{'team2_username2'}}->[1];
+	my $score1 = $ref->{'score1'};
+	my $score2 = $ref->{'score2'};
+
+	# make virtual "team players"
+	my $rating_team1 = 0.5 * ($rating1_1 + $rating1_2);
+	my $rd_team1 = sqrt($rd1_1 * $rd1_1 + $rd1_2 * $rd1_2) / sqrt(2.0);
+	my $rating_team2 = 0.5 * ($rating1_2 + $rating2_2);
+	my $rd_team2 = sqrt($rd2_1 * $rd2_1 + $rd2_2 * $rd2_2) / sqrt(2.0);
+
+	my ($new_t1r, undef) =  foosball::calc_rating($rating_team1, $rd_team1, $rating_team2, $rd_team2, $score1, $score2);
+	my ($new_t2r, undef) =  foosball::calc_rating($rating_team2, $rd_team2, $rating_team1, $rd_team1, $score2, $score1);
+	my $newr1_1 = $rating1_1 + ($new_t1r - $rating_team1);
+	my $newr1_2 = $rating1_2 + ($new_t1r - $rating_team1);
+	my $newr2_1 = $rating2_1 + ($new_t2r - $rating_team2);
+	my $newr2_2 = $rating2_2 + ($new_t2r - $rating_team2);
+
+	my (undef, $newrd1_1) = foosball::calc_rating($rating1_1, $rd1_1, $rating_team2, $rd_team2, $score1, $score2);
+	my (undef, $newrd1_2) = foosball::calc_rating($rating1_2, $rd1_2, $rating_team2, $rd_team2, $score1, $score2);
+	my (undef, $newrd2_1) = foosball::calc_rating($rating2_1, $rd2_1, $rating_team1, $rd_team1, $score2, $score1);
+	my (undef, $newrd2_2) = foosball::calc_rating($rating2_2, $rd2_2, $rating_team1, $rd_team1, $score2, $score1);
+
+	printf("%-10s/%-10s - %-10s/%-10s: %u - %u, new ratings %u/%u %u/%u   %u/%u %u/%u\n",
+		$ref->{'team1_username1'}, $ref->{'team1_username2'},
+		$ref->{'team2_username1'}, $ref->{'team2_username2'},
+		$ref->{'score1'}, $ref->{'score2'},
+		$newr1_1, $newrd1_1, $newr1_2, $newrd1_2,
+		$newr2_1, $newrd2_1, $newr2_2, $newrd2_2);
+	$dbh->do('insert into double_rating values (?,?,?,?)', undef,
+		$ref->{'team1_username1'}, $ref->{'gametime'}, $newr1_1, $newrd1_1);
+	$dbh->do('insert into double_rating values (?,?,?,?)', undef,
+		$ref->{'team1_username2'}, $ref->{'gametime'}, $newr1_2, $newrd1_2);
+	$dbh->do('insert into double_rating values (?,?,?,?)', undef,
+		$ref->{'team2_username1'}, $ref->{'gametime'}, $newr2_1, $newrd2_1);
+	$dbh->do('insert into double_rating values (?,?,?,?)', undef,
+		$ref->{'team2_username2'}, $ref->{'gametime'}, $newr2_2, $newrd2_2);
+
+	$ratings{$ref->{'team1_username1'}} = [ $newr1_1, $newrd1_1 ];
+	$ratings{$ref->{'team1_username2'}} = [ $newr1_2, $newrd1_2 ];
+	$ratings{$ref->{'team2_username1'}} = [ $newr2_1, $newrd2_1 ];
+	$ratings{$ref->{'team2_username2'}} = [ $newr2_2, $newrd2_2 ];
+}
+
+$dbh->commit;
+$dbh->disconnect;
diff --git a/recalc-single-result.pl b/recalc-single-result.pl
new file mode 100755
index 0000000..8c981c2
--- /dev/null
+++ b/recalc-single-result.pl
@@ -0,0 +1,48 @@
+#! /usr/bin/perl
+use strict;
+use warnings;
+use DBI;
+use CGI;
+use CGI::Carp qw(fatalsToBrowser);
+require 'foosball.pm';
+
+my $dbh = foosball::db_connect();
+$dbh->{AutoCommit} = 0;
+
+$dbh->do('delete from single_rating');
+
+my %ratings = ();
+my $q = $dbh->prepare('select * from single_results order by gametime');
+$q->execute;
+
+while (my $ref = $q->fetchrow_hashref) {
+	for my $user (($ref->{'username1'}, $ref->{'username2'})) {
+		if (!exists($ratings{$user})) {
+			$ratings{$user} = [ 1500, 350 ];
+		}
+	}
+	
+	my $rating1 = $ratings{$ref->{'username1'}}->[0];
+	my $rd1 = $ratings{$ref->{'username1'}}->[1];
+	my $rating2 = $ratings{$ref->{'username2'}}->[0];
+	my $rd2 = $ratings{$ref->{'username2'}}->[1];
+	my $score1 = $ref->{'score1'};
+	my $score2 = $ref->{'score2'};
+
+	my ($newr1, $newrd1) = foosball::calc_rating($rating1, $rd1, $rating2, $rd2, $score1, $score2);
+	my ($newr2, $newrd2) = foosball::calc_rating($rating2, $rd2, $rating1, $rd1, $score2, $score1);
+
+	printf("%-10s - %-10s: %u - %u, new ratings %u/%u %u/%u\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);
+	$dbh->do('insert into single_rating values (?,?,?,?)', undef,
+		$ref->{'username2'}, $ref->{'gametime'}, $newr2, $newrd2);
+
+	$ratings{$ref->{'username1'}} = [ $newr1, $newrd1 ];
+	$ratings{$ref->{'username2'}} = [ $newr2, $newrd2 ];
+}
+
+$dbh->commit;
+$dbh->disconnect;
-- 
2.39.2