107 lines
2.7 KiB
Perl
107 lines
2.7 KiB
Perl
package RevBank::Users;
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use v5.28;
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use warnings;
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use feature qw(signatures);
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no warnings qw(experimental::signatures);
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use RevBank::Global;
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use RevBank::Plugins;
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use Carp ();
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my $filename = "revbank.accounts";
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sub _read() {
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my @users;
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open my $fh, $filename or die $!;
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/\S/ and push @users, [split " "] while readline $fh;
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close $fh;
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return { map { lc($_->[0]) => $_ } @users };
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}
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sub names() {
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return map $_->[0], values %{ _read() };
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}
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sub balance($username) {
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return _read()->{ lc $username }->[1];
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}
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sub since($username) {
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return _read()->{ lc $username }->[3];
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}
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sub create($username) {
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open my $fh, '>>', $filename or die $!;
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my $now = now();
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print {$fh} "$username 0.00 $now\n" or die $!;
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close $fh or die $!;
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RevBank::Plugins::call_hooks("user_created", $username);
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return $username;
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}
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sub update($username, $delta, $transaction_id) {
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open my $in, 'revbank.accounts' or die $!;
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open my $out, ">.revbank.$$" or die $!;
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my $old = RevBank::Amount->new(0);
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my $new = RevBank::Amount->new(0);
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while (defined (my $line = readline $in)) {
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my @a = split " ", $line;
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if (lc $a[0] eq lc $username) {
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$old = RevBank::Amount->parse_string($a[1]);
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die "Fatal error: invalid balance in revbank:accounts:$.\n"
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if not defined $old;
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$new = $old + $delta;
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my $since = $a[3] // "";
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my $newc = $new->cents;
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my $oldc = $old->cents;
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$since = "+\@" . now() if $newc > 0 and (!$since or $oldc <= 0);
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$since = "-\@" . now() if $newc < 0 and (!$since or $oldc >= 0);
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$since = "0\@" . now() if $newc == 0 and (!$since or $oldc != 0);
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printf {$out} "%-16s %9s %s %s\n", (
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$username, $new->string("+"), now(), $since
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) or die $!;
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} else {
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print {$out} $line or die $!;
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}
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}
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close $out or die $!;
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close $in;
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rename ".revbank.$$", "revbank.accounts" or die $!;
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RevBank::Plugins::call_hooks(
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"user_balance", $username, $old, $delta, $new, $transaction_id
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);
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}
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sub is_hidden($username) {
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return $username =~ /^[-+]/;
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}
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sub parse_user($username) {
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return undef if is_hidden($username);
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my $users = _read();
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return exists $users->{ lc $username }
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? $users->{ lc $username }->[0]
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: undef;
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}
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sub assert_user($username) {
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my $users = _read();
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return exists $users->{ lc $username }
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? $users->{ lc $username }->[0]
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: (is_hidden($username)
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? create($username)
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: Carp::croak("Account '$username' does not exist")
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);
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}
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1;
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