#!/usr/bin/perl

# parse.pl - extract date, name, and text from irc log

# Eric Lease Morgan <eric_morgan@infomotions.com>
# February 12, 2011 - first cut

# configure
use constant LOG => './irclog.txt';

# require
use strict;

# initialize
my $date = '';

open INPUT, ' < ' . LOG or die "Can't open " . LOG . ": $!\n";
while ( <INPUT> ) {

	# re-initialize
	my $time = '';
	my $text = '';
	my $name = '';
	
	# clean
	chop;
	
	# check for day change
	if ( /^--- Day changed/ ) {
		
		/^--- Day changed \w\w\w (.*)$/;
		my ( $month, $day, $year ) = split / /, $1;
		
		# map the month
		if    ( $month eq 'Jan' ) { $month = '01' }
		elsif ( $month eq 'Feb' ) { $month = '02' }
		elsif ( $month eq 'Mar' ) { $month = '03' }
		elsif ( $month eq 'Apr' ) { $month = '04' }
		elsif ( $month eq 'May' ) { $month = '05' }
		elsif ( $month eq 'Jun' ) { $month = '06' }
		elsif ( $month eq 'Jul' ) { $month = '06' }
		elsif ( $month eq 'Aug' ) { $month = '08' }
		elsif ( $month eq 'Sep' ) { $month = '09' }
		elsif ( $month eq 'Oct' ) { $month = '10' }
		elsif ( $month eq 'Nov' ) { $month = '11' }
		elsif ( $month eq 'Dec' ) { $month = '12' }
		else  { 
		
			# error
			print "Unknown value for month: $month. Call Eric.\n";
			next;
			
		}

		$date = $year . '-' . $month . '-' . $day;
		next;
		
	}
	
	# actual transaction
	else {
	
		# extract date and text
		/^\[(\d\d:\d\d:\d\d)\](.*)/;
		$time = $1;
		$text = $2;
		
		# skip, for now, "processing instructions"
		if ( $text =~ /            ---\|/ ) { next }
		
		# trap "me" comment
		elsif ( $text =~ / \* / ) { $text =~ s/ \*// }
	
		# clean
		$text =~ s/ +/ /g;
		$text =~ s/^ //;
		$text =~ s/ $//;
		
		# extract name from normal transaction
		if ( $text =~ /^\w+ \|/ ) {
		
			$text =~ /^(\w+) \| (.*)/;
			$name = $1;
			$text = $2;
		
		}
		
		# extract name for "me" comment
		else {
		
			$text =~ /^(\w+) /;
			$name = $1;
			
		}
		
	}
	
	# date stamp;
	my $datestamp = "$date $time";
	
	# echo
	#print "  date stamp: $datestamp\n";
	#print "        name: $name\n";
	#print "        text: $text\n";
	#print "\n";
	
	# echo to "database"
	print "$datestamp\t$name\t$text\n";

}

# done
close INPUT;
exit;