From a3e6315b3258858c928bf40695619ac81b903740 Mon Sep 17 00:00:00 2001
From: Vlasta Neubauer <cz.paranoiq@gmail.com>
Date: Wed, 31 May 2023 12:21:36 +0200
Subject: [PATCH] Fix default format in SimpleDateTimeIntervalFormatter

---
 .../Interval/SimpleDateTimeIntervalFormatter.php | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/Time/Interval/SimpleDateTimeIntervalFormatter.php b/src/Time/Interval/SimpleDateTimeIntervalFormatter.php
index c33b4855..11b8f3c4 100644
--- a/src/Time/Interval/SimpleDateTimeIntervalFormatter.php
+++ b/src/Time/Interval/SimpleDateTimeIntervalFormatter.php
@@ -9,8 +9,12 @@
 
 namespace Dogma\Time\Interval;
 
+use Dogma\ShouldNotHappenException;
 use Dogma\StrictBehaviorMixin;
+use Dogma\Time\Date;
+use Dogma\Time\DateTime;
 use Dogma\Time\InvalidFormattingStringException;
+use Dogma\Time\Time;
 use function count;
 use function explode;
 
@@ -32,9 +36,17 @@ public function format(DateOrTimeInterval $interval, ?string $format = null): st
             }
             [$startFormat, $endFormat] = $parts;
             $separator = '';
-        } else {
-            $startFormat = $endFormat = null;
+        } elseif ($interval instanceof TimeInterval) {
+            $startFormat = $endFormat = Time::DEFAULT_FORMAT;
+            $separator = ' - ';
+        } elseif ($interval instanceof DateTimeInterval) {
+            $startFormat = $endFormat = DateTime::DEFAULT_FORMAT;
             $separator = ' - ';
+        } elseif ($interval instanceof DateInterval || $interval instanceof NightInterval) {
+            $startFormat = $endFormat = Date::DEFAULT_FORMAT;
+            $separator = ' - ';
+        } else {
+            throw new ShouldNotHappenException('Default format for ' . get_class($interval) . ' is not defined.');
         }
 
         if ($interval instanceof DateInterval) {