From 4aee2fb6dc0755371eaa23459e514ac76f6a9576 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sun, 2 Jul 2017 18:37:50 +0200
Subject: Fix delay calculation for prematurely terminating trains

---
 Changelog                           |  4 +++
 lib/Travel/Status/DE/IRIS/Result.pm | 62 ++++++++++++++++++++-----------------
 2 files changed, 37 insertions(+), 29 deletions(-)

diff --git a/Changelog b/Changelog
index 8f80136..bf50c41 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,7 @@
+git HEAD
+
+    * Fix miscalculated delays of prematurely terminating trains
+
 Travel::Status::DE::IRIS 1.15 - Tue Jun 06 2017
 
     * Performance improvements
diff --git a/lib/Travel/Status/DE/IRIS/Result.pm b/lib/Travel/Status/DE/IRIS/Result.pm
index 3de6400..07d1bf9 100644
--- a/lib/Travel/Status/DE/IRIS/Result.pm
+++ b/lib/Travel/Status/DE/IRIS/Result.pm
@@ -233,6 +233,17 @@ sub parse_ts {
 sub set_ar {
 	my ( $self, %attrib ) = @_;
 
+	if ( $attrib{status} and $attrib{status} eq 'c' ) {
+		$self->{arrival_is_cancelled} = 1;
+	}
+	elsif ( $attrib{status} and $attrib{status} eq 'a' ) {
+		$self->{arrival_is_additional} = 1;
+	}
+	else {
+		$self->{arrival_is_additional} = 0;
+		$self->{arrival_is_cancelled}  = 0;
+	}
+
 	# unscheduled arrivals may not appear in the plan, but we do need to
 	# know their planned arrival time
 	if ( $attrib{plan_arrival_ts} ) {
@@ -242,13 +253,15 @@ sub set_ar {
 
 	if ( $attrib{arrival_ts} ) {
 		$self->{arrival} = $self->parse_ts( $attrib{arrival_ts} );
-		$self->{delay}
-		  = $self->arrival->subtract_datetime( $self->sched_arrival )
-		  ->in_units('minutes');
+		if ( not $self->{arrival_is_cancelled} ) {
+			$self->{delay}
+			  = $self->arrival->subtract_datetime( $self->sched_arrival )
+			  ->in_units('minutes');
+		}
 	}
 	else {
 		$self->{arrival} = $self->{sched_arrival};
-		$self->{delay}   = 0;
+		$self->{delay} //= 0;
 	}
 
 	if ( $attrib{platform} ) {
@@ -274,23 +287,23 @@ sub set_ar {
 		$self->{sched_route_start} = $self->{sched_route_pre}[0];
 	}
 
+	return $self;
+}
+
+sub set_dp {
+	my ( $self, %attrib ) = @_;
+
 	if ( $attrib{status} and $attrib{status} eq 'c' ) {
-		$self->{arrival_is_cancelled} = 1;
+		$self->{departure_is_cancelled} = 1;
 	}
 	elsif ( $attrib{status} and $attrib{status} eq 'a' ) {
-		$self->{arrival_is_additional} = 1;
+		$self->{departure_is_additional} = 1;
 	}
 	else {
-		$self->{arrival_is_additional} = 0;
-		$self->{arrival_is_cancelled}  = 0;
+		$self->{departure_is_additional} = 0;
+		$self->{departure_is_cancelled}  = 0;
 	}
 
-	return $self;
-}
-
-sub set_dp {
-	my ( $self, %attrib ) = @_;
-
 	# unscheduled arrivals may not appear in the plan, but we do need to
 	# know their planned arrival time
 	if ( $attrib{plan_departure_ts} ) {
@@ -300,13 +313,15 @@ sub set_dp {
 
 	if ( $attrib{departure_ts} ) {
 		$self->{departure} = $self->parse_ts( $attrib{departure_ts} );
-		$self->{delay}
-		  = $self->departure->subtract_datetime( $self->sched_departure )
-		  ->in_units('minutes');
+		if ( not $self->{departure_is_cancelled} ) {
+			$self->{delay}
+			  = $self->departure->subtract_datetime( $self->sched_departure )
+			  ->in_units('minutes');
+		}
 	}
 	else {
 		$self->{departure} = $self->{sched_departure};
-		$self->{delay}     = 0;
+		$self->{delay} //= 0;
 	}
 
 	if ( $attrib{platform} ) {
@@ -332,17 +347,6 @@ sub set_dp {
 		$self->{sched_route_end} = $self->{sched_route_post}[-1];
 	}
 
-	if ( $attrib{status} and $attrib{status} eq 'c' ) {
-		$self->{departure_is_cancelled} = 1;
-	}
-	elsif ( $attrib{status} and $attrib{status} eq 'a' ) {
-		$self->{departure_is_additional} = 1;
-	}
-	else {
-		$self->{departure_is_additional} = 0;
-		$self->{departure_is_cancelled}  = 0;
-	}
-
 	return $self;
 }
 
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