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.\" ========================================================================
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.IX Title "POE::Component::IRC::Cookbook::Seen 3pm"
.TH POE::Component::IRC::Cookbook::Seen 3pm "2018-01-01" "perl v5.26.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
POE::Component::IRC::Cookbook::Seen \- Implement the 'seen' command
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
This little bot tracks the whereabouts of users and allows you to retrieve
that information on command.
.PP
.Vb 10
\& 19:59:51 * seen_bot (n=hinrik@pool\-71\-164\-43\-32.chrlwv.east.verizon.net) has joined #test_channel1
\& 19:59:55 <foo> bar
\& 20:00:16 * seen_bot has quit (Remote closed the connection)
\& 20:00:27 * seen_bot (n=hinrik@pool\-71\-164\-43\-32.chrlwv.east.verizon.net) has joined #test_channel1
\& 20:00:29 <literal> seen_bot: seen seen_bot
\& 20:00:29 <seen_bot> literal: I last saw seen_bot at Mon Sep 22 20:00:27 2008 joining #test_channel1
\& 20:00:34 <literal> seen_bot: seen foo
\& 20:00:40 <seen_bot> literal: I last saw foo at Mon Sep 22 19:59:56 2008 on #test_channel1 saying: bar
\& 20:00:45 <literal> seen_bot: seen baz
\& 20:00:48 <seen_bot> literal: I haven\*(Aqt seen baz
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
.Vb 1
\& #!/usr/bin/env perl
\&
\& use strict;
\& use warnings;
\& use IRC::Utils qw(parse_user lc_irc);
\& use POE;
\& use POE::Component::IRC::State;
\& use POE::Component::IRC::Plugin::AutoJoin;
\& use POE::Component::IRC::Plugin::BotCommand;
\& use Storable;
\&
\& use constant {
\&     USER_DATE     => 0,
\&     USER_MSG      => 1,
\&     DATA_FILE     => \*(Aqseen\*(Aq,
\&     SAVE_INTERVAL => 20 * 60,   # save state every 20 mins
\& };
\&
\& my $seen = { };
\& $seen = retrieve(DATA_FILE) if \-s DATA_FILE;
\&
\& POE::Session\->create(
\&     package_states => [
\&         main => [ qw(
\&             _start
\&             irc_botcmd_seen
\&             irc_ctcp_action
\&             irc_join
\&             irc_part
\&             irc_public
\&             irc_quit
\&             save
\&         )]
\&     ],
\& );
\&
\& $poe_kernel\->run();
\&
\& sub _start {
\&     my ($kernel, $heap) = @_[KERNEL, HEAP];
\&     my $irc = POE::Component::IRC::State\->spawn(
\&         Nick   => \*(Aqseen_bot\*(Aq,
\&         Server => \*(Aqirc.freenode.net\*(Aq,
\&     );
\&     $heap\->{irc} = $irc;
\&
\&     $irc\->plugin_add(\*(AqAutoJoin\*(Aq, POE::Component::IRC::Plugin::AutoJoin\->new(
\&         Channels => [ \*(Aq#test_channel1\*(Aq, \*(Aq#test_channel2\*(Aq ]
\&     ));
\&
\&     $irc\->plugin_add(\*(AqBotCommand\*(Aq, POE::Component::IRC::Plugin::BotCommand\->new(
\&         Commands => {
\&            seen => \*(AqUsage: seen <nick>\*(Aq
\&         }
\&     ));
\&
\&     $irc\->yield(register => qw(ctcp_action join part public quit botcmd_seen));
\&     $irc\->yield(\*(Aqconnect\*(Aq);
\&     $kernel\->delay_set(\*(Aqsave\*(Aq, SAVE_INTERVAL);
\&     return;
\& }
\&
\& sub save {
\&     my $kernel = $_[KERNEL];
\&     warn "storing\en";
\&     store($seen, DATA_FILE) or die "Can\*(Aqt save state";
\&     $kernel\->delay_set(\*(Aqsave\*(Aq, SAVE_INTERVAL);
\& }
\&
\& sub irc_ctcp_action {
\&     my $nick = parse_user($_[ARG0]);
\&     my $chan = $_[ARG1]\->[0];
\&     my $text = $_[ARG2];
\&
\&     add_nick($nick, "on $chan doing: * $nick $text");
\& }
\&
\& sub irc_join {
\&     my $nick = parse_user($_[ARG0]);
\&     my $chan = $_[ARG1];
\&
\&     add_nick($nick, "joining $chan");
\& }
\&
\& sub irc_part {
\&     my $nick = parse_user($_[ARG0]);
\&     my $chan = $_[ARG1];
\&     my $text = $_[ARG2];
\&
\&     my $msg = \*(Aqparting $chan\*(Aq;
\&     $msg .= " with message \*(Aq$text\*(Aq" if defined $text;
\&
\&     add_nick($nick, $msg);
\& }
\&
\& sub irc_public {
\&     my $nick = parse_user($_[ARG0]);
\&     my $chan = $_[ARG1]\->[0];
\&     my $text = $_[ARG2];
\&
\&     add_nick($nick, "on $chan saying: $text");
\& }
\&
\& sub irc_quit {
\&     my $nick = parse_user($_[ARG0]);
\&     my $text = $_[ARG1];
\&
\&     my $msg = \*(Aqquitting\*(Aq;
\&     $msg .= " with message \*(Aq$text\*(Aq" if defined $text;
\&
\&     add_nick($nick, $msg);
\& }
\&
\& sub add_nick {
\&     my ($nick, $msg) = @_;
\&     $seen\->{lc_irc($nick)} = [time, $msg];
\& }
\&
\& sub irc_botcmd_seen {
\&     my ($heap, $nick, $channel, $target) = @_[HEAP, ARG0..$#_];
\&     $nick = parse_user($nick);
\&     my $irc = $heap\->{irc};
\&
\&     if ($seen\->{lc_irc($target)}) {
\&         my $date = localtime $seen\->{lc_irc($target)}\->[USER_DATE];
\&         my $msg = $seen\->{lc_irc($target)}\->[USER_MSG];
\&         $irc\->yield(privmsg => $channel, "$nick: I last saw $target at $date $msg");
\&     }
\&     else {
\&         $irc\->yield(privmsg => $channel, "$nick: I haven\*(Aqt seen $target");
\&     }
\& }
.Ve
.SH "AUTHOR"
.IX Header "AUTHOR"
Hinrik Örn Sigurðsson, hinrik.sig@gmail.com