From 6bce3c07e5de77106c9d138253c7899883ac44b0 Mon Sep 17 00:00:00 2001
From: Harald Wellmann <harald.wellmann@gmx.de>
Date: Mon, 14 Aug 2023 11:53:04 +0200
Subject: [PATCH] fix tunebook via direct URL

---
 src/app/component/tunes-list/tunes-list.component.ts | 6 ++++--
 src/app/service/tunebook-index.ts                    | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/app/component/tunes-list/tunes-list.component.ts b/src/app/component/tunes-list/tunes-list.component.ts
index 45732e9..6a9e77f 100644
--- a/src/app/component/tunes-list/tunes-list.component.ts
+++ b/src/app/component/tunes-list/tunes-list.component.ts
@@ -24,10 +24,12 @@ export class TunesListComponent {
     }
 
     bookName(): string {
-        return this.index.getBookById(this.bookId).descriptor.name;
+        return this.index.getBookById(this.bookId)?.descriptor.name;
     }
 
     private onReady(event?: string) {
-        this.entries = this.index.findAllTunesInBook(event);
+        if (event == this.bookId) {
+            this.entries = this.index.findAllTunesInBook(event);
+        }
     }
 }
diff --git a/src/app/service/tunebook-index.ts b/src/app/service/tunebook-index.ts
index 9a99923..37af5a1 100644
--- a/src/app/service/tunebook-index.ts
+++ b/src/app/service/tunebook-index.ts
@@ -131,7 +131,7 @@ export class TuneBookIndex {
     }
 
     findAllTunesInBook(bookId: string): AnalyzedTune[] {
-        return this.idToBookMap.get(bookId).tuneBook.tunes;
+        return this.idToBookMap.get(bookId)?.tuneBook.tunes;
     }
 
     getBooks(): TuneBookReference[] {