From 26b8c9b350054be6c2250316d48d3e86c21c0525 Mon Sep 17 00:00:00 2001
From: Jeremy Press <jpress@box.com>
Date: Mon, 23 Jul 2018 16:14:11 -0700
Subject: [PATCH] Fix: Fix scenario where skills are present with no transcript
 (#824)

---
 src/lib/viewers/media/DashViewer.js           | 26 +++++++++++-------
 .../media/__tests__/DashViewer-test.js        | 27 +++++++++++++++++++
 2 files changed, 44 insertions(+), 9 deletions(-)

diff --git a/src/lib/viewers/media/DashViewer.js b/src/lib/viewers/media/DashViewer.js
index 68b671357..b19dddd43 100644
--- a/src/lib/viewers/media/DashViewer.js
+++ b/src/lib/viewers/media/DashViewer.js
@@ -469,17 +469,25 @@ class DashViewer extends VideoBaseViewer {
 
         // Convert Box Skill transcript cards to Shaka Text Cues
         const skillsCards = getProp(this.options, 'file.metadata.global.boxSkillsCards.cards');
-        if (skillsCards) {
-            const transcriptCard = skillsCards.find((card) => card.skill_card_type === 'transcript');
-            const entries = transcriptCard.entries || [];
-            entries.forEach((entry) => {
-                // Set defaults if transcript data is malformed (start/end: 0s, text: '')
-                const { appears = [{}], text = '' } = entry;
-                const { start = 0, end = 0 } = Array.isArray(appears) && appears.length > 0 ? appears[0] : {};
-                textCues.push(new shaka.text.Cue(start, end, text));
-            });
+        // No skills are available on the file
+        if (!skillsCards) {
+            return;
+        }
+
+        const transcriptCard = skillsCards.find((card) => card.skill_card_type === 'transcript');
+        // No transcript can be found in the skills data
+        if (!transcriptCard) {
+            return;
         }
 
+        const entries = transcriptCard.entries || [];
+        entries.forEach((entry) => {
+            // Set defaults if transcript data is malformed (start/end: 0s, text: '')
+            const { appears = [{}], text = '' } = entry;
+            const { start = 0, end = 0 } = Array.isArray(appears) && appears.length > 0 ? appears[0] : {};
+            textCues.push(new shaka.text.Cue(start, end, text));
+        });
+
         if (textCues.length > 0) {
             this.autoCaptionDisplayer = new shaka.text.SimpleTextDisplayer(this.mediaEl);
             this.autoCaptionDisplayer.append(textCues);
diff --git a/src/lib/viewers/media/__tests__/DashViewer-test.js b/src/lib/viewers/media/__tests__/DashViewer-test.js
index d53813179..b238f9f98 100644
--- a/src/lib/viewers/media/__tests__/DashViewer-test.js
+++ b/src/lib/viewers/media/__tests__/DashViewer-test.js
@@ -862,6 +862,33 @@ describe('lib/viewers/media/DashViewer', () => {
 
             dash.loadAutoGeneratedCaptions();
         });
+
+        it('should convert to Shaka Cues, initialize subtitles, set button label & return true if there are auto-generated subtitles', () => {
+            dash.options = {
+                file: {
+                    metadata: {
+                        global: {
+                            boxSkillsCards: {
+                                cards: [
+                                    {
+                                        skill_card_type: 'not a transcript',
+                                        entries: []
+                                    }
+                                ]
+                            }
+                        }
+                    }
+                },
+                location: {
+                    locale: 'en-US'
+                }
+            };
+            stubs.mockPlayer.expects('configure').never();
+            stubs.mockControls.expects('initSubtitles').never();
+            stubs.mockControls.expects('setLabel').never();
+
+            dash.loadAutoGeneratedCaptions();
+        });
     });
 
     describe('loadAlternateAudio()', () => {