#!/usr/bin/perl -w

use strict;
use File::Basename;

open(FH, $ARGV[0]);
open(HITRATE, "> hitrate.dat");

my $line;
my $year;
my $month;
my $day;
my $hour;
my $min = -1;
my $sec = -1;
my $nh = 0;

while ( $line = <FH> ) {

	chomp($line);

	unless ( $line =~ /^Reflections\ from\ indexing\ in\ (.+)$/ ) {
		next;
	}

	my $filename = basename($1);

	if ( $filename ) {

		unless ( $filename =~
		   /LCLS_(\d+)_([A-Za-z]+)(\d+)_r\d\d\d\d_(\d\d)(\d\d)(\d\d)_/ ) {
			printf(STDERR "Wrong filename format '%s'!\n",
			       $filename);
			exit(1);
		}

		my $new_year = $1;
		my $new_month = $2;
		my $new_day = $3;
		my $new_hour = $4;
		my $new_min = $5;
		my $new_sec = $6;

		if ( $new_min != $min ) {

			# Not the first time
			if ( $sec != -1 ) {
				printf(HITRATE "%s/%s/%s-%s:%s:%s %i\n",
				               $year, $month, $day,
				               $hour, $min, $sec, $nh);
			}

			$year = $new_year;
			$month = $new_month;
			$day = $new_day;
			$hour = $new_hour;
			$min = $new_min;
			$sec = $new_sec;
			$nh = 0;

		} else {

			$nh++;

		}

	}

}

close(FH);
close(HITRATE);

#system("head -n 67 hitrate.dat > hitrate2.dat");
system("tail -n 105 hitrate.dat > hitrate2.dat");

open(GP, "| gnuplot");

print(GP "set term postscript enhanced font \"Helvetica,20\"\n");
print(GP "set output \"hitrate.ps\"\n");
print(GP "set title \"Hit rate\"\n");
print(GP "set xtics nomirror rotate by -60\n");
print(GP "set xdata time\n");
print(GP "set timefmt \"%Y/%b/%d-%H:%M:%S\"\n");
print(GP "set format x \"%d/%b %H:%M\"\n");
print(GP "set rmargin 6\n");
print(GP "unset key\n");
print(GP "plot [] [] \"hitrate2.dat\" u 1:2 w histeps lw 3 lc 3\n");
close(GP);

system("ps2pdf hitrate.ps");
#unlink("hitrate.dat");
unlink("hitrate.ps");