From b08609649a576ba82d34384110373ac4804f0231 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Sun, 25 Aug 2024 19:30:39 +0200
Subject: use Text::Xslate

---
 bin/events2md.pl  | 69 ++++++++++++++++++++++++++++++-------------------------
 templates/list.md | 32 ++++++++++++++++++++++++++
 2 files changed, 70 insertions(+), 31 deletions(-)
 create mode 100644 templates/list.md

diff --git a/bin/events2md.pl b/bin/events2md.pl
index cd662bb..6d73768 100755
--- a/bin/events2md.pl
+++ b/bin/events2md.pl
@@ -7,6 +7,8 @@ use strictures;
 use autodie;
 use Feature::Compat::Try;
 
+use FindBin qw($Bin);
+
 use POSIX qw(locale_h);
 use locale;
 use Encode qw(decode_utf8);    # TODO: modernize CalDAV access instead
@@ -23,15 +25,17 @@ use Cal::DAV;
 use Data::ICal::DateTime;
 use DateTime;
 use Path::Tiny;
+use Text::Xslate;
 
 if ( IO::Interactive::Tiny::is_interactive() ) {
 	Log::Any::Adapter->set( 'Screen', default_level => 'info' );
 }
 
 # set defaults and parse command-line options
-my ( $BASE_URI, $CALENDAR_URI, $OUTPUT_FILE );
+my ( $BASE_URI, $CALENDAR_URI, $SKELDIR, $OUTPUT_FILE );
 $BASE_URI     = $ENV{CAL_DAV_URL_BASE};
 $CALENDAR_URI = $ENV{CAL_DAV_URL_CALENDAR};
+$SKELDIR      = $ENV{SKELDIR} || "$Bin/../templates";
 $BASE_URI ||= shift @ARGV
 	if @ARGV;
 $CALENDAR_URI ||= shift @ARGV
@@ -160,12 +164,31 @@ if ($OUTPUT_FILE) {
 	$output_path->remove;
 }
 
+my %vars;
 for (@events) {
 	next unless $_->summary;
-	print_event( $_, $_->start, $_->end, $output_path, );
+	push @{ $vars{events} }, resolve_event( $_, $_->start, $_->end );
+}
+
+my %tmpl;
+$tmpl{list} = path($SKELDIR)->child('list.md')->slurp_utf8;
+
+my $template = Text::Xslate->new(
+	path   => \%tmpl,
+	syntax => 'TTerse',
+	type   => 'text',
+);
+
+my $content = $template->render( 'list', \%vars );
+
+if ($output_path) {
+	$output_path->append_utf8($content);
+}
+else {
+	print $content;
 }
 
-sub print_event
+sub resolve_event
 {
 	my ( $entry, $start, $end, $path ) = @_;
 
@@ -196,7 +219,7 @@ sub print_event
 		= $time_end
 		? ucfirst("$date_begin kl. $time_begin-$time_end")
 		: undef;
-	my %attachments;
+	my @attachments;
 
 	if ( $entry->property('attach') ) {
 		for ( @{ $entry->property('attach') } ) {
@@ -208,36 +231,20 @@ sub print_event
 			}
 			$uri->authority and $uri->host
 				or next;
-			push @{ $attachments{ $uri->host } }, $uri;
+			push @attachments, $uri;
 		}
 	}
 
-	$_ = "### $time_brief.";
-	$_ .= " $summary"
-		if $summary;
-	$_ .= "\n$description";
-	$_ .= "  \nMed " . join( ' og ', @attendees ) . '.'
-		if @attendees;
-	$_ .= "  \n**Mødested:** $location"
-		if $location;
-	$_ .= "  \n**Tid:** $timespan."
-		if $timespan;
-	$_ .= "  \n**Pris:** $price"
-		if $price;
-	$_ .= "  \n[Køb billet på Holdbar]($attachments{'byvandring.holdbar.com'}[0])"
-		if $attachments{'byvandring.holdbar.com'};
-	$_ .= "  \n[Køb billet på Billetto]($attachments{'billetto.dk'}[0])"
-		if $attachments{'billetto.dk'};
-	$_ .= "  \n[Læs mere her]($attachments{'byvandring.nu'}[0])"
-		if $attachments{'byvandring.nu'};
-	$_ .= "\n\n---\n\n";
-
-	if ($path) {
-		$path->append_utf8($_);
-	}
-	else {
-		print $_;
-	}
+	return {
+		time_brief  => $time_brief,
+		summary     => $summary,
+		description => $description,
+		attendees   => [@attendees],
+		location    => $location,
+		timespan    => $timespan,
+		price       => $price,
+		attachments => [@attachments],
+	};
 }
 
 sub get_property_string
diff --git a/templates/list.md b/templates/list.md
new file mode 100644
index 0000000..02b8c1b
--- /dev/null
+++ b/templates/list.md
@@ -0,0 +1,32 @@
+[%- FOREACH e IN events -%]
+### [% e.time_brief %].
+[%- IF e.summary %] [% e.summary %]
+[%- END %]
+[% e.description %]
+[%- IF e.attendees %]  
+Med [% e.attendees.join(' og ') %].
+[%- END %]
+[%- IF e.location %]  
+**Mødested:** [% e.location %]
+[%- END %]
+[%- IF e.timespan %]  
+**Tid:** [% e.timespan %].
+[%- END %]
+[%- IF e.price %]  
+**Pris:** [% e.price %]
+[%- END %]
+[%- FOREACH uri IN e.attachments %]
+[%- IF uri.host == 'byvandring.holdbar.com' %]  
+[Køb billet på Holdbar]([% uri.as_iri %])
+[%- END %]
+[%- IF uri.host == 'billetto.dk' %]  
+[Køb billet på Billetto]([% uri.as_iri %])
+[%- END %]
+[%- IF uri.host == 'byvandring.nu' %]  
+[Læs mere her]([% uri.as_iri %])
+[%- END %]
+[%- END %]
+
+---
+
+[% END %]
-- 
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