From a22d539075597a686f04a79d960c2047c83ab389 Mon Sep 17 00:00:00 2001
From: David Phillips <david@sighup.nz>
Date: Fri, 12 Jul 2019 21:14:58 +1200
Subject: Topic: Add topic reporting plugin

---
 Plugin/Admin.pm |  4 ++--
 Plugin/Log.pm   | 12 ++++++++++++
 Plugin/Topic.pm | 44 ++++++++++++++++++++++++++++++++++++++++++++
 idalius.pl      | 16 ++++++++++++++++
 4 files changed, 74 insertions(+), 2 deletions(-)
 create mode 100644 Plugin/Topic.pm

diff --git a/Plugin/Admin.pm b/Plugin/Admin.pm
index ce43424..38d4993 100644
--- a/Plugin/Admin.pm
+++ b/Plugin/Admin.pm
@@ -28,7 +28,7 @@ sub configure {
 	$cmdref->($self, "part", sub { $self->part(@_); } );
 	$cmdref->($self, "mode", sub { $self->mode(@_); } );
 	$cmdref->($self, "kick", sub { $self->kick(@_); } );
-	$cmdref->($self, "topic", sub { $self->topic(@_); } );
+	$cmdref->($self, "set topic", sub { $self->topic(@_); } );
 	$cmdref->($self, "reconnect", sub { $self->reconnect(@_); } );
 
 	$cmdref->($self, "ignore", sub { $self->ignore(@_); } );
@@ -168,7 +168,7 @@ sub topic {
 	my ($self, $irc, $logger, $who, $where, $ided, $rest, $no_reenter, @arguments) = @_;
 
 	return unless is_admin($logger, $who, $ided);
-	return "Syntax: topic <new topic>" unless @arguments >= 2;
+	return "Syntax: set topic <new topic>" unless @arguments >= 2;
 
 	# Strip nick/channel from message
 	$rest =~ s/^(.*?\s)//;
diff --git a/Plugin/Log.pm b/Plugin/Log.pm
index dd092f5..542873c 100644
--- a/Plugin/Log.pm
+++ b/Plugin/Log.pm
@@ -156,6 +156,18 @@ sub on_ping {
 	return;
 }
 
+sub on_331_rpl_notopic {
+	my ($self, $logger, $where, $irc) = @_;
+	$logger->("$t{bracket}\[$t{channel}$where$t{bracket}\]$t{info} --- topic is not set$t{reset}");
+	return;
+}
+
+sub on_332_rpl_topic {
+	my ($self, $logger, $where, $topic, $irc) = @_;
+	$logger->("$t{bracket}\[$t{channel}$where$t{bracket}\]$t{info} --- topic is $t{message}$topic$t{reset}");
+	return;
+}
+
 sub on_372_motd_content {
 	my ($self, $logger, $server, $motd, $irc) = @_;
 	$logger->("$t{info}MOTD: $t{message}$motd$t{reset}");
diff --git a/Plugin/Topic.pm b/Plugin/Topic.pm
new file mode 100644
index 0000000..ce3c782
--- /dev/null
+++ b/Plugin/Topic.pm
@@ -0,0 +1,44 @@
+package Plugin::Topic;
+
+use strict;
+use warnings;
+
+my %channel_topics;
+
+sub configure {
+	my $self = shift;
+	my $cmdref = shift;
+	shift; # run_command
+
+	$cmdref->($self, "topic", sub { $self->topic(@_); } );
+
+	return $self;
+}
+
+sub topic {
+	my ($self, $irc, $logger, $who, $where, $ided, $rest, $no_reenter, @arguments) = @_;
+	$where = $where->[0] if ref($where) eq "ARRAY";
+
+	# use current channel unless one is specified
+	my $channel = @arguments ? $arguments[0] : $where;
+	return "Syntax: topic [channel]" unless $channel =~ m/^#.*$/;
+
+	my $topic = $channel_topics{$channel} || "(no topic)";
+	return "Topic for $channel: $topic";
+}
+
+sub on_topic {
+	my ($self, $logger, $who, $where, $topic, $irc) = @_;
+	$channel_topics{$where} = $topic;
+}
+
+sub on_331_rpl_notopic {
+	my ($self, $logger, $where, $irc) = @_;
+	delete $channel_topics{$where};
+}
+
+sub on_332_rpl_topic {
+	my ($self, $logger, $where, $topic, $irc) = @_;
+	$channel_topics{$where} = $topic;
+}
+1;
diff --git a/idalius.pl b/idalius.pl
index bd727ac..e62f090 100755
--- a/idalius.pl
+++ b/idalius.pl
@@ -64,6 +64,8 @@ POE::Session->create(
 			irc_254
 			irc_255
 			irc_302
+			irc_331
+			irc_332
 			irc_372
 			irc_375
 			irc_376
@@ -388,7 +390,21 @@ sub irc_255 {
 	return;
 }
 
+# 331 (rpl_notopic)
+# Sent in response to topic query
+sub irc_331 {
+	my ($where) = $_[ARG1];
+	trigger_modules("331_rpl_notopic", undef, $where, [], ($where));
+	return;
+}
 
+# 332 (rpl_topic)
+# Sent in response to topic query
+sub irc_332 {
+	my ($where, $topic) = @{$_[ARG2]};
+	trigger_modules("332_rpl_topic", undef, undef, [], ($where, $topic));
+	return;
+}
 
 # 372 (MOTD content)
 sub irc_372 {
-- 
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