#!/usr/bin/perl -w

use CGI::FormBuilder;

my $docroot = '../build/html';

# TODO: check if protocol-agnostic URL works
my $webroot = 'https://form.stadsvandring.dk/form';
my $req_path = $docroot . '/index.tmpl';
my $ack_path = $docroot . '/thanks/index.html';

my $webmaster = 'webmaster@stadsvandring.dk';
my $frontdesk = 'info@stadsvandring.dk';
my $helpdesk = 'hostmaster@stadsvandring.dk';

# Set this to 1 for a separate confirmation page
my ($confirm) = 1;

# Built-in email validation is too simplistic
my $valid_email = '/^[+_A-Za-z0-9-]+(\.[+_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)*(\.[_A-Za-z0-9-]+)$/';

my $form = CGI::FormBuilder->new(
	lang => 'en',
	title => 'stadsvandring contact form',
	method => 'POST',
	fields => [qw/
		name
		email
	/],
	validate => {
		email => $valid_email,
		_email => $valid_email, #fake check to silence warning of variable used only once
	},
	required => [qw/
		name
		email
	/],
	messages => ':en_US',
	submit => ['Submit'],
	action => $webroot, #avoids loosing submitted values when redirected from other site
);

$form->field(
	name => 'name',
	placeholder => 'Name',
);
$form->field(
	name => 'email',
	placeholder => 'Email',
);

my ($form_required_text) = $form->{opt}{messages}{form_required_text};
my ($mail_from) = $webmaster;
my ($mail_to, $mail_subject);

if ($form->submitted) {
	$infostring = "Thanks for your interest in stadsvandring.dk!";
	if ($form->validate) {
		$mail_to = $frontdesk;
		$mail_subject = 'stadsvandring.dk contact form';
	} else {
		$mail_to = "$frontdesk, $helpdesk";
		$mail_subject = 'ERROR in stadsvandring.dk contact form';
		$infostring .= "\n<P>NB! There was an error in one or more of the fields. The info was sent anyway, but you are adviced to go back, check that all fields are properly filed out, and then send again.";
		$confirm = 0;
	};
	# Abuse subject to add additional headers
#	$mail_subject .= "\n" . 'Content-Type: text/plain; charset="ISO-8859-1";';
#	$mail_subject .= "\n" . 'Content-Transfer-Encoding: 8bit';
	$form->mailresults(
		to	=> $mail_to,
		from	=> $mail_from,
		subject	=> "$mail_subject",
	);
	if ($confirm) {
		$infostring .= "\n<P>The following info has been submitted:";
		$form->{opt}{messages}{form_confirm_text} = "$infostring";
		print $form->confirm(
			header		=> 1,
			template	=> $ack_path
		);
	} else {
		printhack( $form->render(
			header		=> 1,
			sticky		=> (! $form->validate),
#FIXME			text		=> $infostring,
			template	=> $req_path
		));
	}
} elsif ($ENV{'FORMBUILDER_NOHEADER'}) {
	printhack( $form->render(
		header		=> 0,
		template	=> $req_path
	));
} else {
	printhack( $form->render(
		header		=> 1,
		template	=> $req_path
	));
}

# fix charset in header
sub printhack {
	$_ = shift;
	s,charset=\Kiso\-8859\-1,utf-8,;
	print $_;
}