1 files changed, 202 insertions, 0 deletions
diff --git a/bin/events2semesterplan.pl b/bin/events2semesterplan.pl
new file mode 100755
index 0000000..68e695b
--- /dev/null
+++ b/bin/events2semesterplan.pl
@@ -0,0 +1,202 @@
+#!/usr/bin/perl
+
+use v5.36;
+use utf8;
+use open qw(:std :encoding(UTF-8));
+use Feature::Compat::Try;
+
+use FindBin qw($Bin);
+use lib "$Bin/../lib";
+
+use Getopt::Complete (
+	'quiet!'   => undef,
+	'verbose!' => undef,
+	'debug!'   => undef,
+	'trace!'   => undef,
+	'output'   => 'files',
+	'skeldir'  => 'directories',
+	'username' => undef,
+	'password' => undef,
+	'locale'   => undef,
+	'timezone' => undef,
+	'title'    => undef,
+	'<>'       => undef,
+);
+use IO::Interactive::Tiny;
+use Log::Any qw($log);
+use Log::Any::Adapter;
+use URI;
+use DateTime;
+use Path::Tiny 0.119 qw(path tempdir);
+use Text::Xslate;
+use POSIX qw(locale_h);    # resolve LC_TIME
+use locale;
+use DateTime::TimeZone;
+use LaTeX::Driver;
+
+use Object::Groupware::DAV;
+use Object::Groupware::Calendar;
+
+# collect settings from command-line options and defaults
+my $SKELDIR      = $ARGS{skeldir}  || $ENV{SKELDIR} || "$Bin/../templates";
+my $BASE_URI     = $ARGS{'<>'}[0]  || $ENV{CAL_DAV_URL_BASE};
+my $CALENDAR_URI = $ARGS{'<>'}[1]  || $ENV{CAL_DAV_URL_CALENDAR};
+my $USERNAME     = $ARGS{username} || $ENV{CAL_DAV_USER};
+my $PASSWORD     = $ARGS{password} || $ENV{CAL_DAV_PASS};
+my $LOCALE       = $ARGS{locale}   || $ENV{CAL_LANG};
+my $TIME_ZONE    = $ARGS{timezone};
+my $OUTPUT_FILE  = $ARGS{output};
+
+# init logging
+my $LOGLEVEL = 'warning';
+$LOGLEVEL = 'critical' if $ARGS{quiet};
+$LOGLEVEL = 'warning'  if defined $ARGS{verbose} and !$ARGS{verbose};
+$LOGLEVEL = 'info'     if $ARGS{verbose};
+$LOGLEVEL = 'debug'    if $ARGS{debug};
+$LOGLEVEL = 'trace'    if $ARGS{trace};
+if ( IO::Interactive::Tiny::is_interactive() ) {
+	Log::Any::Adapter->set( 'Screen', default_level => $LOGLEVEL );
+}
+else {
+	use Log::Any::Adapter ( 'Stderr', default_level => $LOGLEVEL );
+}
+
+# init groupware settings
+my $dt_locale = DateTime::Locale->load( $LOCALE || setlocale(LC_TIME) );
+my %GROUPWARE_OPTIONS = (
+	dt_locale    => $dt_locale,
+	dt_time_zone => DateTime::TimeZone->new(
+		name => ( $ARGS{timezone} || 'local' ),
+	),
+);
+$log->infof(
+	'Will use locale %s and time zone %s',
+	$GROUPWARE_OPTIONS{dt_locale}->code,
+	$GROUPWARE_OPTIONS{dt_time_zone}->name,
+);
+
+# init calendar URIs
+$BASE_URI = URI->new($BASE_URI)
+	or $log->fatal('failed to parse required base URI') && exit 2;
+$BASE_URI->scheme
+	or $BASE_URI->scheme('file');
+
+# get calendar
+my $calendar;
+if ( $BASE_URI->scheme eq 'http' or $BASE_URI->scheme eq 'https' ) {
+	$log->infof( 'will use base URI %s', $BASE_URI );
+	$CALENDAR_URI = URI->new( $CALENDAR_URI || $BASE_URI );
+	$CALENDAR_URI and $CALENDAR_URI->authority
+		or $log->fatal('bad calendar URI: must be an internet URI') && exit 2;
+	$BASE_URI->eq($CALENDAR_URI) and $CALENDAR_URI = undef
+		or $log->infof( 'will use calendar URI %s', $CALENDAR_URI );
+
+	my $session = Object::Groupware::DAV->new(
+		user => $USERNAME,
+		pass => $PASSWORD,
+		uri  => $BASE_URI,
+		%GROUPWARE_OPTIONS,
+	);
+	$calendar = $session->get($CALENDAR_URI);
+}
+elsif ( $BASE_URI->scheme eq 'file' ) {
+	defined $BASE_URI->file
+		or $log->fatal('bad base URI: cannot open file') && exit 2;
+	$log->infof( 'will use base URI %s', $BASE_URI );
+
+	# parse local calendar data
+	$log->debug('parse local calendar data...');
+	my $path = path( $BASE_URI->file );
+	if ( $path->is_file ) {
+		$calendar = Object::Groupware::Calendar->new(
+			filename => "$path",
+			%GROUPWARE_OPTIONS,
+		);
+	}
+	else {
+		my $data;
+		$path->visit( sub { $data .= $_->slurp_raw if $_->is_file } );
+		$calendar = Object::Groupware::Calendar->new(
+			data => $data,
+			%GROUPWARE_OPTIONS,
+		);
+	}
+}
+
+# select subset of calendar events
+$log->debug('serialize calendar events...');
+my $start;
+if ( $ENV{CAL_DAV_NOW} ) {
+	try { require DateTimeX::Easy }
+	catch ($e) {
+		$log->fatalf( 'failed parsing CAL_DAV_NOW: %s', $e ) && exit 2
+	}
+	$start = DateTimeX::Easy->new( $ENV{CAL_DAV_NOW} );
+	$log->fatalf(
+		'failed parsing CAL_DAV_NOW: unknown start time "%s"',
+		$ENV{CAL_DAV_NOW}
+		)
+		&& exit 2
+		unless defined $start;
+}
+$start ||= DateTime->now;
+my $end    = $start->clone->add( months => 6 );
+my $span   = DateTime::Span->from_datetimes( start => $start, end => $end );
+my @events = $calendar->events($span);
+
+# serialize calendar view
+my %vars;
+
+#$vars{metadata} = $calendar->metadata();
+$vars{name} = $ARGS{title} || '';
+for (@events) {
+	next unless $_->summary;
+	push @{ $vars{events} }, $_;
+}
+
+my %tmpl;
+$tmpl{plan} = path($SKELDIR)->child('semesterplan.tex')->slurp_utf8;
+$tmpl{list} = path($SKELDIR)->child('semesterplan-list.events')->slurp_utf8;
+
+my $template = Text::Xslate->new(
+	path   => \%tmpl,
+	syntax => 'TTerse',
+	type   => 'text',
+);
+
+my $content_plan = $template->render( 'plan', \%vars );
+my $content_list = $template->render( 'list', \%vars );
+
+my $tempdir = tempdir( CLEANUP => !$log->is_debug );
+my $srcfile = $tempdir->child('plan.tex');
+my $pdffile = $tempdir->child('plan.pdf');
+if ( $log->is_debug ) {
+	$log->warnf( '[debug] temporary directory %s will not be cleaned',
+		$tempdir );
+}
+
+$srcfile->append_utf8($content_plan);
+$tempdir->child('list.events')->append_utf8($content_list);
+
+my $drv = LaTeX::Driver->new(
+	source => "$srcfile",
+	output => "$pdffile",
+	format => 'pdf(lualatex)',
+	DEBUG  => $log->is_debug,
+	-capture_stderr,
+);
+
+$drv->run
+	or $log->fatalf( 'failed to generate PDF file: %s', $drv->stderr )
+	&& exit 2;
+
+if ($OUTPUT_FILE) {
+	$OUTPUT_FILE = path($OUTPUT_FILE);
+	$OUTPUT_FILE->parent->mkpath;
+	$pdffile->copy($OUTPUT_FILE);
+}
+else {
+	print $pdffile->slurp_raw;
+}
+
+1;