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pbot/PBot/Commands.pm
2020-01-20 16:37:51 -08:00

241 lines
7.7 KiB
Perl

# File: Commands.pm
# Author: pragma_
#
# Purpose: Derives from Registerable class to provide functionality to
# register subroutines, along with a command name and admin level.
# Registered items will then be executed if their command name matches
# a name provided via input.
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
package PBot::Commands;
use warnings;
use strict;
use feature 'unicode_strings';
use base 'PBot::Registerable';
use Carp ();
use PBot::HashObject;
sub new {
Carp::croak("Options to " . __FILE__ . " should be key/value pairs, not hash reference") if ref($_[1]) eq 'HASH';
my ($class, %conf) = @_;
my $self = bless {}, $class;
$self->initialize(%conf);
return $self;
}
sub initialize {
my ($self, %conf) = @_;
$self->SUPER::initialize(%conf);
$self->{pbot} = $conf{pbot} // Carp::croak("Missing pbot reference to " . __FILE__);
$self->{metadata} = PBot::HashObject->new(pbot => $self->{pbot}, name => 'Commands', filename => $conf{filename});
$self->load_metadata;
$self->register(sub { $self->set(@_) }, "cmdset", 90);
$self->register(sub { $self->unset(@_) }, "cmdunset", 90);
$self->register(sub { $self->help(@_) }, "help", 0);
}
sub register {
my ($self, $subref, $name, $level) = @_;
if (not defined $subref or not defined $name or not defined $level) {
Carp::croak("Missing parameters to Commands::register");
}
my $ref = $self->SUPER::register($subref);
$ref->{name} = lc $name;
$ref->{level} = $level;
if (not $self->{metadata}->exists($name)) {
$self->{metadata}->add($name, { level => $level, help => '' }, 1);
} else {
if (not defined $self->get_meta($name, 'level')) {
$self->{metadata}->set($name, 'level', $level, 1);
}
}
return $ref;
}
sub unregister {
my ($self, $name) = @_;
Carp::croak("Missing name parameter to Commands::unregister") if not defined $name;
$name = lc $name;
@{ $self->{handlers} } = grep { $_->{name} ne $name } @{ $self->{handlers} };
}
sub exists {
my ($self, $keyword) = @_;
$keyword = lc $keyword;
foreach my $ref (@{ $self->{handlers} }) {
return 1 if $ref->{name} eq $keyword;
}
return 0;
}
sub interpreter {
my ($self, $stuff) = @_;
my $result;
if ($self->{pbot}->{registry}->get_value('general', 'debugcontext')) {
use Data::Dumper;
$Data::Dumper::Sortkeys = 1;
$self->{pbot}->{logger}->log("Commands::interpreter\n");
$self->{pbot}->{logger}->log(Dumper $stuff);
}
my $from = exists $stuff->{admin_channel_override} ? $stuff->{admin_channel_override} : $stuff->{from};
my ($admin_channel) = $stuff->{arguments} =~ m/\B(#[^ ]+)/; # assume first channel-like argument
$admin_channel = $from if not defined $admin_channel;
my $admin = $self->{pbot}->{admins}->loggedin($admin_channel, "$stuff->{nick}!$stuff->{user}\@$stuff->{host}");
my $admin_level = defined $admin ? $admin->{level} : 0;
my $keyword = lc $stuff->{keyword};
if (exists $stuff->{'effective-level'}) {
$self->{pbot}->{logger}->log("override level to $stuff->{'effective-level'}\n");
$admin_level = $stuff->{'effective-level'};
}
foreach my $ref (@{ $self->{handlers} }) {
if ($ref->{name} eq $keyword) {
my $cmd_level = $self->get_meta($keyword, 'level') // $ref->{level};
if ($admin_level >= $cmd_level) {
$stuff->{no_nickoverride} = 1;
my $result = &{ $ref->{subref} }($stuff->{from}, $stuff->{nick}, $stuff->{user}, $stuff->{host}, $stuff->{arguments}, $stuff);
if ($stuff->{referenced}) {
return undef if $result =~ m/(?:usage:|no results)/i;
}
return $result;
} else {
return undef if $stuff->{referenced};
if ($admin_level == 0) {
return "/msg $stuff->{nick} You must login to use this command.";
} else {
return "/msg $stuff->{nick} You are not authorized to use this command.";
}
}
}
}
return undef;
}
sub get_meta {
my ($self, $command, $key) = @_;
$command = lc $command;
return undef if not exists $self->{metadata}->{hash}->{$command};
return $self->{metadata}->{hash}->{$command}->{$key};
}
sub load_metadata {
my ($self) = @_;
$self->{metadata}->load;
}
sub save_metadata {
my ($self) = @_;
$self->{metadata}->save;
}
sub set {
my ($self, $from, $nick, $user, $host, $arguments, $stuff) = @_;
my ($command, $key, $value) = $self->{pbot}->{interpreter}->split_args($stuff->{arglist}, 3);
return "Usage: cmdset <command> [key [value]]" if not defined $command;
return $self->{metadata}->set($command, $key, $value);
}
sub unset {
my ($self, $from, $nick, $user, $host, $arguments, $stuff) = @_;
my ($command, $key) = $self->{pbot}->{interpreter}->split_args($stuff->{arglist}, 2);
return "Usage: cmdunset <command> <key>" if not defined $command or not defined $key;
return $self->{metadata}->unset($command, $key);
}
sub help {
my ($self, $from, $nick, $user, $host, $arguments, $stuff) = @_;
if (not length $arguments) {
return "For general help, see <https://github.com/pragma-/pbot/tree/master/doc>. For help about a specific command or factoid, use `help <keyword> [channel]`.";
}
my $keyword = lc $self->{pbot}->{interpreter}->shift_arg($stuff->{arglist});
# check built-in commands first
if ($self->exists($keyword)) {
if (exists $self->{metadata}->{hash}->{$keyword}) {
my $name = $self->{metadata}->{hash}->{$keyword}->{_name};
my $level = $self->{metadata}->{hash}->{$keyword}->{level};
my $help = $self->{metadata}->{hash}->{$keyword}->{help};
my $result = "/say $name: ";
if (defined $level and $level > 0) {
$result .= "[Level $level admin command] ";
}
if (not defined $help or not length $help) {
$result .= "I have no help for this command yet.";
} else {
$result .= $help;
}
return $result;
}
return "$keyword is a built-in command, but I have no help for it yet.";
}
# then factoids
my $channel_arg = $self->{pbot}->{interpreter}->shift_arg($stuff->{arglist});
$channel_arg = $from if not defined $channel_arg or not length $channel_arg;
$channel_arg = '.*' if $channel_arg !~ m/^#/;
my @factoids = $self->{pbot}->{factoids}->find_factoid($channel_arg, $keyword, exact_trigger => 1);
if (not @factoids or not $factoids[0]) {
return "I don't know anything about $keyword.";
}
my ($channel, $trigger);
if (@factoids > 1) {
if (not grep { $_->[0] eq $channel_arg } @factoids) {
return "/say $keyword found in multiple channels: " . (join ', ', sort map { $_->[0] eq '.*' ? 'global' : $_->[0] } @factoids) . "; use `help $keyword <channel>` to disambiguate.";
} else {
foreach my $factoid (@factoids) {
if ($factoid->[0] eq $channel_arg) {
($channel, $trigger) = ($factoid->[0], $factoid->[1]);
last;
}
}
}
} else {
($channel, $trigger) = ($factoids[0]->[0], $factoids[0]->[1]);
}
my $channel_name = $self->{pbot}->{factoids}->{factoids}->{hash}->{$channel}->{_name};
my $trigger_name = $self->{pbot}->{factoids}->{factoids}->{hash}->{$channel}->{$trigger}->{_name};
$channel_name = 'global channel' if $channel_name eq '.*';
$trigger_name = "\"$trigger_name\"" if $trigger_name =~ / /;
my $result = "/say ";
$result .= "[$channel_name] " if $channel ne $from and $channel ne '.*';
$result .= "$trigger_name: ";
my $help = $self->{pbot}->{factoids}->{factoids}->{hash}->{$channel}->{$trigger}->{help};
if (not defined $help or not length $help) {
return "/say $trigger_name is a factoid for $channel_name, but I have no help for it yet.";
}
$result .= $help;
return $result;
}
1;