#!/usr/bin/perl

use warnings;
use strict;

use Data::Dumper;
use Template;

my (%results_by_date, %results_by_test);

foreach (glob "reports/*") {
	my ($date) = $_ =~ m{reports/(?:[\w-])+-results-(.*)\.txt};	
	$results_by_date{$date} = load_report($_);
}

# Turn sorted-by-date structure inside out.
foreach my $date (keys %results_by_date) {
		my $date_result = $results_by_date{$date};
		foreach my $test_name (keys %$date_result) {
			$results_by_test{$test_name}{$date} = $date_result->{$test_name};
		}
}

my %report_data = (
	'results'    => \%results_by_test,
	'test_dates' => [ sort keys %results_by_date ],
);

my $tt = Template->new({
	INCLUDE_PATH => 'templates',
});

$tt->process('tests.tt', { 'data' => \%report_data }) or die $tt->error;

# ----------------------------------------------------------------------------

sub load_report {
	my $file = shift;

	die 'No input file specified'  unless $file;
	die "That file doesn't exist"  unless -e $file;
	die "That isn't a plain file"  unless -f _;
	die "That file isn't readable" unless -r _;

	open (my $RESULTS, '<', $file) or die "Can't open $file: $!";
	my @lines = <$RESULTS>;
	close $RESULTS;

	my (%tests, $current_test);

	# XXX: Test files get added, removed, renamed, etc. A mechanism is necessary
	# here to cope with this.
	
	foreach (@lines) {
			chomp;

			if (m{^t/(.*?)\.}) {
				$current_test = $1;
			} elsif (/^ok$/) {
				$tests{$current_test} = 100;
			} elsif (/Failed .*? tests, (.*?)% okay/) {
				$tests{$current_test} = $1;
			}
	}
	
	\%tests;
}