From db0e1fd8b3e4a200635fd26451a930c78f76c991 Mon Sep 17 00:00:00 2001
From: Bill <bill@Loyaltys-MacBook-Pro-2.local>
Date: Mon, 17 Sep 2018 14:28:42 +1000
Subject: [PATCH] update calculate total time duration with reverse duration
 seconds

---
 src/animateGroup.js                       |  1 +
 src/utils/calculateTotalDuration.js       |  7 ++++++-
 test/utils/calculateTotalDuration.test.js | 20 ++++++++++++++++++--
 3 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/src/animateGroup.js b/src/animateGroup.js
index 3e2abb2..4639b66 100644
--- a/src/animateGroup.js
+++ b/src/animateGroup.js
@@ -92,6 +92,7 @@ export default class AnimateGroup extends React.PureComponent<Props, State> {
         previous +
         calculateTotalDuration({
           ...this.animations[id],
+          play,
           restAttributes,
         });
 
diff --git a/src/utils/calculateTotalDuration.js b/src/utils/calculateTotalDuration.js
index 247c895..0510e80 100644
--- a/src/utils/calculateTotalDuration.js
+++ b/src/utils/calculateTotalDuration.js
@@ -3,12 +3,17 @@ export default ({
   durationSeconds = 0,
   delaySeconds = 0,
   overlaySeconds = 0,
+  reverseDurationSeconds = 0,
+  play,
 }: {
   durationSeconds?: number,
   delaySeconds?: number,
   overlaySeconds?: number,
+  reverseDurationSeconds?: number,
+  play: boolean,
 }): number => {
-  const duration = parseFloat(durationSeconds) + parseFloat(delaySeconds);
+  const duration =
+    parseFloat(play ? durationSeconds : reverseDurationSeconds || durationSeconds) + parseFloat(delaySeconds);
   const withEarlySeconds = duration - parseFloat(overlaySeconds);
   return withEarlySeconds * 1000;
 };
diff --git a/test/utils/calculateTotalDuration.test.js b/test/utils/calculateTotalDuration.test.js
index 1216b29..1479d83 100644
--- a/test/utils/calculateTotalDuration.test.js
+++ b/test/utils/calculateTotalDuration.test.js
@@ -2,8 +2,24 @@ import calculateTotalDuration from '../../src/utils/calculateTotalDuration';
 
 describe('calculateTotalDuration', () => {
   it('should return correctly seconds', () => {
-    expect(calculateTotalDuration({ durationSeconds: 1, delaySeconds: 1, overlaySeconds: 1 })).toEqual(1000);
+    expect(calculateTotalDuration({ durationSeconds: 1, delaySeconds: 1, overlaySeconds: 1, play: true })).toEqual(
+      1000,
+    );
 
-    expect(calculateTotalDuration({ durationSeconds: 2, delaySeconds: 1, overlaySeconds: 1 })).toEqual(2000);
+    expect(calculateTotalDuration({ durationSeconds: 2, delaySeconds: 1, overlaySeconds: 1, play: true })).toEqual(
+      2000,
+    );
+  });
+
+  it('should return correctly seconds when play on reverse', () => {
+    expect(
+      calculateTotalDuration({
+        durationSeconds: 1,
+        reverseDurationSeconds: 2,
+        delaySeconds: 1,
+        overlaySeconds: 1,
+        play: false,
+      }),
+    ).toEqual(2000);
   });
 });