#!/usr/bin/perl

use File::ReadBackwards;

if ($#ARGV ne 2){
   print "not enough arguments\n";
   exit 1;
}

my $file=$ARGV[0];
my $nick=$ARGV[1];
my $printdate=$ARGV[2];
my $date=0;
my $lastaction;
my $line;

my $log = File::ReadBackwards->new($file) || die $!;

while ($line=$log->readline()){
#   $line=$log->readline();
   if ($date eq 0){
      if ($line =~ m/^\[[0-9]{2}:[0-9]{2}\] <$nick> /i && $line !~ m/joined #/ ) {
         $date=1;
         ($lastaction=$line)=~s/\n//;
      }
   } else {
      if ($printdate eq 0){
         print "$nick\'s last action: $lastaction\n";
         exit 0;
      } else {
         if ($line=~m/^\[00:00\] --- /){
            ($date=$line)=~s/^.{12}(.*)\n/$1/;
            print "$nick spoke last time on $date\n";
            print "$nick\'s last action: $lastaction\n";
            exit 0;
         }
      }
   }
}

print "I didn't remember $nick\n";