Refactor relTimeToSeconds to separate function

No behavioral changes intended: the negative modifier bug is explicitly
included in this refactoring.

Author: Kevinjil

webapp/src/Service/ExternalContestSourceService.php

@@ -697,34 +697,14 @@ protected function validateAndUpdateContest(Event $event, EventData $data): void
         $reltimeRegex = '/^(-)?(\d+):(\d{2}):(\d{2})(?:\.(\d{3}))?$/';
         preg_match($reltimeRegex, $duration, $durationData);
 
-        $durationNegative = ($durationData[1] === '-');
-        $fullDuration     = $durationNegative ? $duration : ('+' . $duration);
+        $durationNegative  = ($durationData[1] === '-');
+        $durationInSeconds = Utils::relTimeToSeconds($duration);
+        $fullDuration      = Utils::relTime($durationInSeconds, includePlus: true);
 
         if ($freeze !== null) {
-            preg_match($reltimeRegex, $freeze, $freezeData);
-            $freezeNegative     = ($freezeData[1] === '-');
-            $freezeHourModifier = $freezeNegative ? -1 : 1;
-            $freezeInSeconds    = $freezeHourModifier * (int)$freezeData[2] * 3600
-                + 60 * (int)$freezeData[3]
-                + (double)sprintf('%d.%03d', $freezeData[4], $freezeData[5] ?? 0);
-            $durationHourModifier = $durationNegative ? -1 : 1;
-            $durationInSeconds    = $durationHourModifier * (int)$durationData[2] * 3600
-                                    + 60 * (int)$durationData[3]
-                                    + (double)sprintf('%d.%03d', $durationData[4], $durationData[5] ?? 0);
-            $freezeStartSeconds   = $durationInSeconds - $freezeInSeconds;
-            $freezeHour           = floor($freezeStartSeconds / 3600);
-            $freezeMinutes        = floor(($freezeStartSeconds % 3600) / 60);
-            $freezeSeconds        = floor(($freezeStartSeconds % 60) / 60);
-            $freezeMilliseconds   = $freezeStartSeconds - floor($freezeStartSeconds);
-
-            $fullFreeze = sprintf(
-                '%s%d:%02d:%02d.%03d',
-                $freezeHour < 0 ? '' : '+',
-                $freezeHour,
-                $freezeMinutes,
-                $freezeSeconds,
-                $freezeMilliseconds
-            );
+            $freezeInSeconds    = Utils::relTimeToSeconds($freeze);
+            $freezeStartSeconds = $durationInSeconds - $freezeInSeconds;
+            $fullFreeze         = Utils::relTime($freezeStartSeconds, includePlus: true);
         } else {
             $fullFreeze = null;
         }

webapp/src/Utils/Utils.php

@@ -167,6 +167,8 @@ class Utils
 
     final public const DAY_IN_SECONDS = 60*60*24;
 
+    final public const RELTIME_REGEX = '/^(-)?(\d+):(\d{2}):(\d{2})(?:\.(\d{3}))?$/';
+
     /**
      * Returns the milliseconds part of a time stamp truncated at three digits.
      */
@@ -191,12 +193,12 @@ public static function absTime(mixed $epoch, bool $floored = false): ?string
     }
 
     /**
-     * Prints a time diff as relative time as (-)?(h)*h:mm:ss(.uuu)?
-     * (with millis if $floored is false).
+     * Prints a time diff as relative time as ([-+])?(h)*h:mm:ss(.uuu)?
+     * (with millis if $floored is false and with + sign only if $includePlus is true).
      */
-    public static function relTime(float $seconds, bool $floored = false): string
+    public static function relTime(float $seconds, bool $floored = false, bool $includePlus = false): string
     {
-        $sign = ($seconds < 0) ? '-' : '';
+        $sign = ($seconds < 0) ? '-' : ($includePlus ? '+' : '');
         $seconds = abs($seconds);
         $hours = (int)($seconds / 3600);
         $minutes = (int)(($seconds - $hours*3600)/60);
@@ -206,6 +208,17 @@ public static function relTime(float $seconds, bool $floored = false): string
             . ($floored ? '' : $millis);
     }
 
+    public static function relTimeToSeconds(string $reltime): float
+    {
+        preg_match(self::RELTIME_REGEX, $reltime, $data);
+        $negative = ($data[1] === '-');
+        $modifier = $negative ? -1 : 1;
+        $seconds  = $modifier * (int)$data[2] * 3600
+                    + (int)$data[3] * 60
+                    + (float)sprintf('%d.%03d', $data[4], $data[5] ?? 0);
+        return $seconds;
+    }
+
     /**
      * Parse a string as time and return as epoch in float format (with
      * optional fractional part). The original time string should be in one of

webapp/tests/Unit/Utils/UtilsTest.php

@@ -72,6 +72,14 @@ public function testRelTime(): void
         self::assertEquals('1:18:31.000', Utils::relTime(4711));
     }
 
+    /**
+     * Test that the relTime function returns the plus sign
+     */
+    public function testRelTimeWithPlus(): void
+    {
+        self::assertEquals('+1:18:31.000', Utils::relTime(4711, includePlus: true));
+    }
+
     /**
      * Test that the relTime function returns the correct data when using a
      * time with millisecond precision
@@ -126,6 +134,30 @@ public function testNegativeRelTimeWithMillisFloored(): void
         self::assertEquals('-3:25:45', Utils::relTime(-12345.6789, true));
     }
 
+    /**
+     * Test the relTimeToSeconds function with basic data.
+     */
+    public function testRelTimeToSeconds(): void
+    {
+        self::assertEquals(1*3600 + 2*60 + 3, Utils::relTimeToSeconds('1:02:03'));
+    }
+
+    /**
+     * Test the relTimeToSeconds function with millisecond precision.
+     */
+    public function testRelTimeToSecondsWithMillis(): void
+    {
+        self::assertEquals(10.123, Utils::relTimeToSeconds('0:00:10.123'));
+    }
+
+    /**
+     * Test the relTimeToSeconds function with negative reltime.
+     */
+    public function testRelTimeToSecondsWithNegative(): void
+    {
+        self::assertEquals(-(1*3600 + 2*60 + 3), Utils::relTimeToSeconds('-1:02:03'));
+    }
+
     /**
      * Test that the toEpochFloat function works with a leap day
      */