Add a Makefile for the book builder stuff.
[remoteglot] / remoteglot.pl
index 5982eca..6a5778a 100755 (executable)
@@ -28,12 +28,17 @@ use warnings;
 no warnings qw(once);
 
 # Program starts here
 no warnings qw(once);
 
 # Program starts here
-$SIG{ALRM} = sub { output(); };
 my $latest_update = undef;
 my $latest_update = undef;
+my $output_timer = undef;
 my $http_timer = undef;
 my $http_timer = undef;
+my $stop_pgn_fetch = 0;
 my $tb_retry_timer = undef;
 my %tb_cache = ();
 my $tb_lookup_running = 0;
 my $tb_retry_timer = undef;
 my %tb_cache = ();
 my $tb_lookup_running = 0;
+my $last_written_json = undef;
+
+# TODO: Persist (parts of) this so that we can restart.
+my %clock_target_for_pos = ();
 
 $| = 1;
 
 
 $| = 1;
 
@@ -160,10 +165,58 @@ sub handle_uci {
        output();
 }
 
        output();
 }
 
+my $getting_movelist = 0;
+my $pos_for_movelist = undef;
+my @uci_movelist = ();
+my @pretty_movelist = ();
+
 sub handle_fics {
        my $line = shift;
        if ($line =~ /^<12> /) {
                handle_position(Position->new($line));
 sub handle_fics {
        my $line = shift;
        if ($line =~ /^<12> /) {
                handle_position(Position->new($line));
+               $t->cmd("moves");
+       }
+       if ($line =~ /^Movelist for game /) {
+               my $pos = $pos_waiting // $pos_calculating;
+               if (defined($pos)) {
+                       @uci_movelist = ();
+                       @pretty_movelist = ();
+                       $pos_for_movelist = Position->start_pos($pos->{'player_w'}, $pos->{'player_b'});
+                       $getting_movelist = 1;
+               }
+       }
+       if ($getting_movelist &&
+           $line =~ /^\s* \d+\. \s+                     # move number
+                       (\S+) \s+ \( [\d:.]+ \) \s*       # first move, then time
+                      (?: (\S+) \s+ \( [\d:.]+ \) )?    # second move, then time 
+                    /x) {
+               eval {
+                       my $uci_move;
+                       ($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($1);
+                       push @uci_movelist, $uci_move;
+                       push @pretty_movelist, $1;
+
+                       if (defined($2)) {
+                               ($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($2);
+                               push @uci_movelist, $uci_move;
+                               push @pretty_movelist, $2;
+                       }
+               };
+               if ($@) {
+                       warn "Error when getting FICS move history: $@";
+                       $getting_movelist = 0;
+               }
+       }
+       if ($getting_movelist &&
+           $line =~ /^\s+ \{.*\} \s+ (?: \* | 1\/2-1\/2 | 0-1 | 1-0 )/x) {
+               # End of movelist.
+               for my $pos ($pos_waiting, $pos_calculating) {
+                       next if (!defined($pos));
+                       if ($pos->fen() eq $pos_for_movelist->fen()) {
+                               $pos->{'pretty_history'} = \@pretty_movelist;
+                       }
+               }
+               $getting_movelist = 0;
        }
        if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
                my ($who, $msg) = ($1, $2);
        }
        if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
                my ($who, $msg) = ($1, $2);
@@ -182,6 +235,7 @@ sub handle_fics {
                        fetch_pgn($url);
                } elsif ($msg =~ /^stoppgn$/) {
                        $t->cmd("tell $who Stopping poll.");
                        fetch_pgn($url);
                } elsif ($msg =~ /^stoppgn$/) {
                        $t->cmd("tell $who Stopping poll.");
+                       $stop_pgn_fetch = 1;
                        $http_timer = undef;
                } elsif ($msg =~ /^quit$/) {
                        $t->cmd("tell $who Bye bye.");
                        $http_timer = undef;
                } elsif ($msg =~ /^quit$/) {
                        $t->cmd("tell $who Bye bye.");
@@ -207,41 +261,55 @@ my $pgn_hysteresis_counter = 0;
 
 sub handle_pgn {
        my ($body, $header, $url) = @_;
 
 sub handle_pgn {
        my ($body, $header, $url) = @_;
+
+       if ($stop_pgn_fetch) {
+               $stop_pgn_fetch = 0;
+               $http_timer = undef;
+               return;
+       }
+
        my $pgn = Chess::PGN::Parse->new(undef, $body);
        my $pgn = Chess::PGN::Parse->new(undef, $body);
-       if (!defined($pgn) || !$pgn->read_game()) {
+       if (!defined($pgn) || !$pgn->read_game() || $body !~ /^\[/) {
                warn "Error in parsing PGN from $url\n";
        } else {
                warn "Error in parsing PGN from $url\n";
        } else {
-               $pgn->quick_parse_game;
-               my $pos = Position->start_pos($pgn->white, $pgn->black);
-               my $moves = $pgn->moves;
-               my @uci_moves = ();
-               for my $move (@$moves) {
-                       my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($move);
-                       push @uci_moves, Board::move_to_uci_notation($from_row, $from_col, $to_row, $to_col, $promo);
-                       $pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
-               }
-               $pos->{'history'} = \@uci_moves;
-               $pos->{'pretty_history'} = $moves;
-
-               # Sometimes, PGNs lose a move or two for a short while,
-               # or people push out new ones non-atomically. 
-               # Thus, if we PGN doesn't change names but becomes
-               # shorter, we mistrust it for a few seconds.
-               my $trust_pgn = 1;
-               if (defined($last_pgn_white) && defined($last_pgn_black) &&
-                   $last_pgn_white eq $pgn->white &&
-                   $last_pgn_black eq $pgn->black &&
-                   scalar(@uci_moves) < scalar(@last_pgn_uci_moves)) {
-                       if (++$pgn_hysteresis_counter < 3) {
-                               $trust_pgn = 0; 
+               eval {
+                       $pgn->parse_game({ save_comments => 'yes' });
+                       my $pos = Position->start_pos($pgn->white, $pgn->black);
+                       my $moves = $pgn->moves;
+                       my @uci_moves = ();
+                       for my $move (@$moves) {
+                               my $uci_move;
+                               ($pos, $uci_move) = $pos->make_pretty_move($move);
+                               push @uci_moves, $uci_move;
                        }
                        }
-               }
-               if ($trust_pgn) {
-                       $last_pgn_white = $pgn->white;
-                       $last_pgn_black = $pgn->black;
-                       @last_pgn_uci_moves = @uci_moves;
-                       $pgn_hysteresis_counter = 0;
-                       handle_position($pos);
+                       $pos->{'result'} = $pgn->result;
+                       $pos->{'pretty_history'} = $moves;
+
+                       extract_clock($pgn, $pos);
+
+                       # Sometimes, PGNs lose a move or two for a short while,
+                       # or people push out new ones non-atomically. 
+                       # Thus, if we PGN doesn't change names but becomes
+                       # shorter, we mistrust it for a few seconds.
+                       my $trust_pgn = 1;
+                       if (defined($last_pgn_white) && defined($last_pgn_black) &&
+                           $last_pgn_white eq $pgn->white &&
+                           $last_pgn_black eq $pgn->black &&
+                           scalar(@uci_moves) < scalar(@last_pgn_uci_moves)) {
+                               if (++$pgn_hysteresis_counter < 3) {
+                                       $trust_pgn = 0; 
+                               }
+                       }
+                       if ($trust_pgn) {
+                               $last_pgn_white = $pgn->white;
+                               $last_pgn_black = $pgn->black;
+                               @last_pgn_uci_moves = @uci_moves;
+                               $pgn_hysteresis_counter = 0;
+                               handle_position($pos);
+                       }
+               };
+               if ($@) {
+                       warn "Error in parsing moves from $url\n";
                }
        }
        
                }
        }
        
@@ -252,6 +320,7 @@ sub handle_pgn {
 
 sub handle_position {
        my ($pos) = @_;
 
 sub handle_position {
        my ($pos) = @_;
+       find_clock_start($pos);
                
        # if this is already in the queue, ignore it
        return if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
                
        # if this is already in the queue, ignore it
        return if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
@@ -264,6 +333,19 @@ sub handle_position {
        # if we're already thinking on something, stop and wait for the engine
        # to approve
        if (defined($pos_calculating)) {
        # if we're already thinking on something, stop and wait for the engine
        # to approve
        if (defined($pos_calculating)) {
+               # Store the final data we have for this position in the history,
+               # with the precise clock information we just got from the new
+               # position. (Historic positions store the clock at the end of
+               # the position.)
+               #
+               # Do not output anything new to the main analysis; that's
+               # going to be obsolete really soon.
+               $pos_calculating->{'white_clock'} = $pos->{'white_clock'};
+               $pos_calculating->{'black_clock'} = $pos->{'black_clock'};
+               delete $pos_calculating->{'white_clock_target'};
+               delete $pos_calculating->{'black_clock_target'};
+               output_json(1);
+
                if (!defined($pos_waiting)) {
                        uciprint($engine, "stop");
                }
                if (!defined($pos_waiting)) {
                        uciprint($engine, "stop");
                }
@@ -428,7 +510,8 @@ sub output {
        # Don't update too often.
        my $age = Time::HiRes::tv_interval($latest_update);
        if ($age < $remoteglotconf::update_max_interval) {
        # Don't update too often.
        my $age = Time::HiRes::tv_interval($latest_update);
        if ($age < $remoteglotconf::update_max_interval) {
-               Time::HiRes::alarm($remoteglotconf::update_max_interval + 0.01 - $age);
+               my $wait = $remoteglotconf::update_max_interval + 0.01 - $age;
+               $output_timer = AnyEvent->timer(after => $wait, cb => \&output);
                return;
        }
        
                return;
        }
        
@@ -452,7 +535,7 @@ sub output {
 
                my $t = $tb_cache{$fen};
                my $pv = $t->{'pv'};
 
                my $t = $tb_cache{$fen};
                my $pv = $t->{'pv'};
-               my $matelen = int((1 + scalar @$pv) / 2);
+               my $matelen = int((1 + $t->{'score'}) / 2);
                if ($t->{'result'} eq '1/2-1/2') {
                        $info->{'score_cp'} = 0;
                } elsif ($t->{'result'} eq '1-0') {
                if ($t->{'result'} eq '1/2-1/2') {
                        $info->{'score_cp'} = 0;
                } elsif ($t->{'result'} eq '1-0') {
@@ -510,7 +593,7 @@ sub output {
        }
 
        output_screen();
        }
 
        output_screen();
-       output_json();
+       output_json(0);
        $latest_update = [Time::HiRes::gettimeofday];
 }
 
        $latest_update = [Time::HiRes::gettimeofday];
 }
 
@@ -632,6 +715,7 @@ sub output_screen {
 }
 
 sub output_json {
 }
 
 sub output_json {
+       my $historic_json_only = shift;
        my $info = $engine->{'info'};
 
        my $json = {};
        my $info = $engine->{'info'};
 
        my $json = {};
@@ -647,8 +731,7 @@ sub output_json {
        $json->{'seldepth'} = $info->{'seldepth'};
        $json->{'tablebase'} = $info->{'tablebase'};
 
        $json->{'seldepth'} = $info->{'seldepth'};
        $json->{'tablebase'} = $info->{'tablebase'};
 
-       # single-PV only for now
-       $json->{'pv_uci'} = $info->{'pv'};
+       $json->{'pv_uci'} = $info->{'pv'};  # Still needs to be there for the JS to calculate arrows; only for the primary PV, though!
        $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating, @{$info->{'pv'}}) ];
 
        my %refutation_lines = ();
        $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating, @{$info->{'pv'}}) ];
 
        my %refutation_lines = ();
@@ -672,17 +755,76 @@ sub output_json {
                                        pretty_move => $pretty_move,
                                        pv_pretty => \@pretty_pv,
                                };
                                        pretty_move => $pretty_move,
                                        pv_pretty => \@pretty_pv,
                                };
-                               $refutation_lines{$pv->[0]}->{'pv_uci'} = $pv;
                        };
                }
        }
        $json->{'refutation_lines'} = \%refutation_lines;
 
                        };
                }
        }
        $json->{'refutation_lines'} = \%refutation_lines;
 
-       open my $fh, ">", $remoteglotconf::json_output . ".tmp"
+       my $encoded = JSON::XS::encode_json($json);
+       unless ($historic_json_only || !defined($remoteglotconf::json_output) ||
+               (defined($last_written_json) && $last_written_json eq $encoded)) {
+               atomic_set_contents($remoteglotconf::json_output, $encoded);
+               $last_written_json = $encoded;
+       }
+
+       if (exists($pos_calculating->{'pretty_history'}) &&
+           defined($remoteglotconf::json_history_dir)) {
+               my $filename = $remoteglotconf::json_history_dir . "/" . id_for_pos($pos_calculating) . ".json";
+
+               # Overwrite old analysis (assuming it exists at all) if we're
+               # using a different engine, or if we've calculated deeper.
+               # nodes is used as a tiebreaker. Don't bother about Multi-PV
+               # data; it's not that important.
+               my ($old_engine, $old_depth, $old_nodes) = get_json_analysis_stats($filename);
+               my $new_depth = $json->{'depth'} // 0;
+               my $new_nodes = $json->{'nodes'} // 0;
+               if (!defined($old_engine) ||
+                   $old_engine ne $json->{'id'}{'name'} ||
+                   $new_depth > $old_depth ||
+                   ($new_depth == $old_depth && $new_nodes >= $old_nodes)) {
+                       atomic_set_contents($filename, $encoded);
+               }
+       }
+}
+
+sub atomic_set_contents {
+       my ($filename, $contents) = @_;
+
+       open my $fh, ">", $filename . ".tmp"
                or return;
                or return;
-       print $fh JSON::XS::encode_json($json);
+       print $fh $contents;
+       close $fh;
+       rename($filename . ".tmp", $filename);
+}
+
+sub id_for_pos {
+       my $pos = shift;
+
+       my $halfmove_num = scalar @{$pos->{'pretty_history'}};
+       (my $fen = $pos->fen()) =~ tr,/ ,-_,;
+       return "move$halfmove_num-$fen";
+}
+
+sub get_json_analysis_stats {
+       my $filename = shift;
+
+       my ($engine, $depth, $nodes);
+
+       open my $fh, "<", $filename
+               or return undef;
+       local $/ = undef;
+       eval {
+               my $json = JSON::XS::decode_json(<$fh>);
+               $engine = $json->{'id'}{'name'} // die;
+               $depth = $json->{'depth'} // 0;
+               $nodes = $json->{'nodes'} // 0;
+       };
        close $fh;
        close $fh;
-       rename($remoteglotconf::json_output . ".tmp", $remoteglotconf::json_output);
+       if ($@) {
+               warn "Error in decoding $filename: $@";
+               return undef;
+       }
+       return ($engine, $depth, $nodes);
 }
 
 sub uciprint {
 }
 
 sub uciprint {
@@ -836,6 +978,89 @@ sub book_info {
        return $text;
 }
 
        return $text;
 }
 
+sub extract_clock {
+       my ($pgn, $pos) = @_;
+
+       # Look for extended PGN clock tags.
+       my $tags = $pgn->tags;
+       if (exists($tags->{'WhiteClock'}) && exists($tags->{'BlackClock'})) {
+               $pos->{'white_clock'} = $tags->{'WhiteClock'};
+               $pos->{'black_clock'} = $tags->{'BlackClock'};
+
+               $pos->{'white_clock'} =~ s/\b(\d)\b/0$1/g;
+               $pos->{'black_clock'} =~ s/\b(\d)\b/0$1/g;
+               return;
+       }
+
+       # Look for TCEC-style time comments.
+       my $moves = $pgn->moves;
+       my $comments = $pgn->comments;
+       my $last_black_move = int((scalar @$moves) / 2);
+       my $last_white_move = int((1 + scalar @$moves) / 2);
+
+       my $black_key = $last_black_move . "b";
+       my $white_key = $last_white_move . "w";
+
+       if (exists($comments->{$white_key}) &&
+           exists($comments->{$black_key}) &&
+           $comments->{$white_key} =~ /tl=(\d+:\d+:\d+)/ &&
+           $comments->{$black_key} =~ /tl=(\d+:\d+:\d+)/) {
+               $comments->{$white_key} =~ /tl=(\d+:\d+:\d+)/;
+               $pos->{'white_clock'} = $1;
+               $comments->{$black_key} =~ /tl=(\d+:\d+:\d+)/;
+               $pos->{'black_clock'} = $1;
+               return;
+       }
+}
+
+sub find_clock_start {
+       my $pos = shift;
+
+       # If the game is over, the clock is stopped.
+       if (exists($pos->{'result'}) &&
+           ($pos->{'result'} eq '1-0' ||
+            $pos->{'result'} eq '1/2-1/2' ||
+            $pos->{'result'} eq '0-1')) {
+               return;
+       }
+
+       # When we don't have any moves, we assume the clock hasn't started yet.
+       if ($pos->{'move_num'} == 1 && $pos->{'toplay'} eq 'W') {
+               return;
+       }
+
+       # TODO(sesse): Maybe we can get the number of moves somehow else for FICS games.
+       if (!exists($pos->{'pretty_history'})) {
+               return;
+       }
+
+       my $id = id_for_pos($pos);
+       if (exists($clock_target_for_pos{$id})) {
+               if ($pos->{'toplay'} eq 'W') {
+                       $pos->{'white_clock_target'} = $clock_target_for_pos{$id};
+               } else {
+                       $pos->{'black_clock_target'} = $clock_target_for_pos{$id};
+               }
+               return;
+       }
+
+       # OK, we haven't seen this position before, so we assume the move
+       # happened right now.
+       my $key = ($pos->{'toplay'} eq 'W') ? 'white_clock' : 'black_clock';
+       if (!exists($pos->{$key})) {
+               # No clock information.
+               return;
+       }
+       $pos->{$key} =~ /(\d+):(\d+):(\d+)/;
+       my $time_left = $1 * 3600 + $2 * 60 + $3;
+       $clock_target_for_pos{$id} = time + $time_left;
+       if ($pos->{'toplay'} eq 'W') {
+               $pos->{'white_clock_target'} = $clock_target_for_pos{$id};
+       } else {
+               $pos->{'black_clock_target'} = $clock_target_for_pos{$id};
+       }
+}
+
 sub schedule_tb_lookup {
        return if (!defined($remoteglotconf::tb_serial_key));
        my $pos = $pos_waiting // $pos_calculating;
 sub schedule_tb_lookup {
        return if (!defined($remoteglotconf::tb_serial_key));
        my $pos = $pos_waiting // $pos_calculating;
@@ -881,13 +1106,14 @@ sub handle_tb_lookup_return {
                                my $moves = $pgn->moves;
                                my @uci_moves = ();
                                for my $move (@$moves) {
                                my $moves = $pgn->moves;
                                my @uci_moves = ();
                                for my $move (@$moves) {
-                                       my ($from_row, $from_col, $to_row, $to_col, $promo) = $pvpos->parse_pretty_move($move);
-                                       push @uci_moves, Board::move_to_uci_notation($from_row, $from_col, $to_row, $to_col, $promo);
-                                       $pvpos = $pvpos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
+                                       my $uci_move;
+                                       ($pvpos, $uci_move) = $pvpos->make_pretty_move($move);
+                                       push @uci_moves, $uci_move;
                                }
                                $tb_cache{$fen} = {
                                        result => $pgn->result,
                                }
                                $tb_cache{$fen} = {
                                        result => $pgn->result,
-                                       pv => \@uci_moves
+                                       pv => \@uci_moves,
+                                       score => $response->{'Response'}{'Score'},
                                };
                                output();
                        }
                                };
                                output();
                        }