65566349f6
Don't worry, that won't happen for at least months. First we'll just log warnings for a while.
82 lines
2.3 KiB
Perl
82 lines
2.3 KiB
Perl
#!perl
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HELP1 "undo <transactionID>" => "Undo a transaction";
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my $filename = ".revbank.undo";
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my @TAB;
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sub command :Tab(undo) ($self, $cart, $command, @) {
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$command eq 'undo' or return NEXT;
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$cart->size and return ABORT, "Undo is not available mid-transaction.";
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my @log;
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open my $in, '<', $filename or die "$filename: $!";
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while (defined(my $line = readline $in)) {
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my ($tid, $user, $delta, $dt) = split " ", $line;
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if (@log and $log[-1]{tid} eq $tid) {
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push @{ $log[-1]{deltas} }, [ $user, $delta ];
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} else {
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push @log, { tid => $tid, dt => $dt, deltas => [ [ $user, $delta ] ] };
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}
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}
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@TAB = ();
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my $max = @log < 15 ? @log : 15;
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for my $txn (@log[-$max .. -1]) {
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print "ID: $txn->{tid} $txn->{dt} ", (
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join ", ", map { sprintf "%s:%+.2f", @$_ } @{ $txn->{deltas} }
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), "\n";
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push @TAB, $txn->{tid};
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}
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return "Transaction ID", \&undo;
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}
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sub tab { @TAB }
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my $doing_undo = 0; # Ugly but works, just like the rest of this plugin
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sub undo :Tab(&tab) ($self, $cart, $tid, @) {
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open my $in, '<', $filename or die "$filename: $!";
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open my $out, '>', "$filename.$$" or die "$filename.$$: $!";
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my $description = "Undo $tid";
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my $entry;
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while (defined(my $line = readline $in)) {
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if ($line =~ /^\Q$tid\E\s/) {
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my (undef, $user, $delta) = split " ", $line;
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$entry ||= $cart->add(0, $description);
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$entry->{FORCE_UNBALANCED} = 1;
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$entry->add_contra($user, $delta, "Undo $tid");
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} else {
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print {$out} $line;
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}
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}
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close $in;
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close $out or die $!;
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if ($cart->size) {
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rename "$filename.$$", $filename or die $!;
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$doing_undo = 1; # don't allow undoing undos
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$cart->checkout('-undo');
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$doing_undo = 0;
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} else {
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return ABORT, "Transaction ID '$tid' not found in undo log.";
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}
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return ACCEPT;
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}
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sub hook_user_balance($class, $username, $old, $delta, $new, $transaction_id, @) {
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return if $doing_undo; # don't allow undoing undos
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open my $fh, '>>', $filename or die "$filename: $!";
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print {$fh} join " ", $transaction_id, $username, -$delta, now(), "\n";
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close $fh or die "$filename: $!";
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}
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