package Gsg::MdParse;
use strict;
use warnings;
use Log::Log4perl qw(:easy);
use Exporter qw(import);
our @EXPORT_OK = qw(render_readme);

# README content is passed in as a var, sub returned an HTML version of the parsed markdown
sub render_readme($$) {

	my $readme_content = shift;
	my $logger = shift;

	my $html_readme;
	# Might be a better way to do this? TODO
	open my $fh, '>>', \$html_readme or die "Can't open variable: $!";

	# Main parsing logic, doing it line by line
	# I have some ideas on how to make this more robust/efficient,
	# but starting with below for POC
	foreach my $line ( split("\n", $readme_content) ) {
		# HEADERS
		if ( $line =~ m/^#{1}(?!#)(.*)#$|^#{1}(?!#)(.*)$/ ) {
			my $parsed_line;
			if ( ! defined $1 || $1 eq "" ) {
				$parsed_line = "<h1>$2</h1>";
			} else {
				$parsed_line = "<h1>$1</h1>";
			}
			print $fh "$parsed_line";
		} elsif ( $line =~ m/^#{2}(?!#)(.*)#{2}$|^#{2}(?!#)(.*)$/ ) {
			my $parsed_line;
			if ( ! defined $1 || $1 eq "" ) {
				$parsed_line = "<h2>$2</h2>";
			} else {
				$parsed_line = "<h2>$1</h2>";
			}
			print $fh "$parsed_line";
		} elsif ( $line =~ m/^#{3}(?!#)(.*)#{3}$|^#{3}(?!#)(.*)$/ ) {
			my $parsed_line;
			if ( ! defined $1 || $1 eq "" ) {
				$parsed_line = "<h3>$2</h3>";
			} else {
				$parsed_line = "<h3>$1</h3>";
			}
			print $fh "$parsed_line";
		} elsif ( $line =~ m/^#{4}(?!#)(.*)#{4}$|^#{4}(?!#)(.*)$/ ) {
			my $parsed_line;
			if ( ! defined $1 || $1 eq "" ) {
				$parsed_line = "<h4>$2</h4>";
			} else {
				$parsed_line = "<h4>$1</h4>";
			}
			print $fh "$parsed_line";
		} elsif ( $line =~ m/^#{5}(?!#)(.*)#{5}$|^#{5}(?!#)(.*)$/ ) {
			my $parsed_line;
			if ( ! defined $1 || $1 eq "" ) {
				$parsed_line = "<h5>$2</h5>";
			} else {
				$parsed_line = "<h5>$1</h5>";
			}
			print $fh "$parsed_line";
		} elsif ( $line =~ m/^\*(.*)/ ) {
			my $parsed_line = "<ul><li>$1</li></ul>";
			print $fh "$parsed_line";
		}
		else {
			print $fh "$line</br>";
		}
	}

	print $fh "</br><hr\>";
	close $fh;
	$logger->info("Parsed README");
	return $html_readme;

}
1;