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135 lines
4.5 KiB
Perl
135 lines
4.5 KiB
Perl
# File: Help.pm
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#
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# Purpose: Registers `help` command.
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# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
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# SPDX-License-Identifier: MIT
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package PBot::Core::Commands::Help;
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use PBot::Imports;
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use parent 'PBot::Core::Class';
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sub initialize {
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my ($self, %conf) = @_;
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$self->{pbot}->{commands}->register(sub { $self->cmd_help(@_) }, 'help');
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}
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sub cmd_help {
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my ($self, $context) = @_;
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if (not length $context->{arguments}) {
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return "For general help, see <https://github.com/pragma-/pbot/tree/master/doc#table-of-contents>. For help about a specific command or factoid, use `help <keyword> [channel]`.";
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}
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my $keyword = lc $self->{pbot}->{interpreter}->shift_arg($context->{arglist});
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# check built-in commands first
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if ($self->{pbot}->{commands}->exists($keyword)) {
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# check for command metadata
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if ($self->{pbot}->{commands}->{metadata}->exists($keyword)) {
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my $name = $self->{pbot}->{commands}->{metadata}->get_key_name($keyword);
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my $requires_cap = $self->{pbot}->{commands}->{metadata}->get_data($keyword, 'requires_cap');
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my $help = $self->{pbot}->{commands}->{metadata}->get_data($keyword, 'help');
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my $result = "/say $name: ";
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# prefix help text with required capability
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if ($requires_cap) {
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$result .= "[Requires can-$keyword] ";
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}
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if (not defined $help or not length $help) {
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$result .= "I have no help text for this command yet. To add help text, use the command `cmdset $keyword help <text>`.";
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} else {
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$result .= $help;
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}
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return $result;
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}
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# no command metadata available
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return "$keyword is a built-in command, but I have no help for it yet.";
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}
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# then factoids
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my $channel_arg = $self->{pbot}->{interpreter}->shift_arg($context->{arglist});
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if (not defined $channel_arg or not length $channel_arg) {
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# set channel argument to from if no argument was passed
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$channel_arg = $context->{from};
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}
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if ($channel_arg !~ /^#/) {
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# set channel argument to global if it's not channel-like
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$channel_arg = '.*';
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}
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# find factoids
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my @factoids = $self->{pbot}->{factoids}->{data}->find($channel_arg, $keyword, exact_trigger => 1);
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if (not @factoids or not $factoids[0]) {
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# nothing found
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return "I don't know anything about $keyword.";
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}
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my ($channel, $trigger);
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if (@factoids > 1) {
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# ask to disambiguate factoids if found in multiple channels
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if (not grep { $_->[0] eq $channel_arg } @factoids) {
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return
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"/say $keyword found in multiple channels: "
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. (join ', ', sort map { $_->[0] eq '.*' ? 'global' : $_->[0] } @factoids)
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. "; use `help $keyword <channel>` to disambiguate.";
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} else {
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foreach my $factoid (@factoids) {
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if ($factoid->[0] eq $channel_arg) {
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($channel, $trigger) = ($factoid->[0], $factoid->[1]);
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last;
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}
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}
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}
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} else {
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($channel, $trigger) = ($factoids[0]->[0], $factoids[0]->[1]);
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}
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# get canonical channel and trigger names with original typographical casing
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my $channel_name = $self->{pbot}->{factoids}->{data}->{storage}->get_key_name($channel);
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my $trigger_name = $self->{pbot}->{factoids}->{data}->{storage}->get_key_name($channel, $trigger);
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# prettify channel name if it's ".*"
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if ($channel_name eq '.*') {
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$channel_name = 'global channel';
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}
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# prettify trigger name with double-quotes if it contains spaces
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if ($trigger_name =~ / /) {
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$trigger_name = "\"$trigger_name\"";
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}
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# get factoid's `help` metadata
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my $help = $self->{pbot}->{factoids}->{data}->{storage}->get_data($channel, $trigger, 'help');
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# return immediately if no help text
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if (not defined $help or not length $help) {
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return "/say $trigger_name is a factoid for $channel_name, but I have no help text for it yet."
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. " To add help text, use the command `factset $trigger_name help <text>`.";
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}
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my $result = "/say ";
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# if factoid doesn't belong to invoked or global channel,
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# then prefix with the factoid's channel name.
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if ($channel ne $context->{from} and $channel ne '.*') {
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$result .= "[$channel_name] ";
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}
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$result .= "$trigger_name: $help";
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return $result;
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}
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1;
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