From 35735cd9315758ae78d59b0514111ca3a3e5e9fc Mon Sep 17 00:00:00 2001
From: Huang Xin <chrox.huang@gmail.com>
Date: Mon, 26 May 2025 22:03:43 +0800
Subject: [PATCH] fix: skip speech when the text is empty at the end of some
 chapters, closes #1231 (#1243)

---
 apps/readest-app/src/services/tts/TTSController.ts | 8 +++++++-
 apps/readest-app/src/types/view.ts                 | 4 ++--
 apps/readest-app/src/utils/style.ts                | 4 ++++
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/apps/readest-app/src/services/tts/TTSController.ts b/apps/readest-app/src/services/tts/TTSController.ts
index 689a23ab..2e313fd8 100644
--- a/apps/readest-app/src/services/tts/TTSController.ts
+++ b/apps/readest-app/src/services/tts/TTSController.ts
@@ -1,5 +1,6 @@
 import { FoliateView, TTSGranularity } from '@/types/view';
 import { TTSClient, TTSMessageCode, TTSVoice } from './TTSClient';
+import { parseSSMLMarks } from '@/utils/ssml';
 import { WebSpeechClient } from './WebSpeechClient';
 import { EdgeTTSClient } from './EdgeTTSClient';
 import { TTSUtils } from './TTSUtils';
@@ -106,7 +107,7 @@ export class TTSController extends EventTarget {
           // FIXME: in case we are at the end of the book, need a better way to handle this
           if (this.#nossmlCnt < 10 && this.state === 'playing') {
             resolve();
-            await this.view.next(1);
+            await this.view.next();
             await this.forward();
           }
           return;
@@ -114,6 +115,11 @@ export class TTSController extends EventTarget {
           this.#nossmlCnt = 0;
         }
 
+        const { plainText, marks } = parseSSMLMarks(ssml);
+        if (!plainText || marks.length === 0) {
+          resolve();
+          return await this.forward();
+        }
         const iter = await this.ttsClient.speak(ssml, signal);
         let lastCode: TTSMessageCode = 'boundary';
         for await (const { code, mark } of iter) {
diff --git a/apps/readest-app/src/types/view.ts b/apps/readest-app/src/types/view.ts
index dd6f1486..dfaa67c6 100644
--- a/apps/readest-app/src/types/view.ts
+++ b/apps/readest-app/src/types/view.ts
@@ -10,8 +10,8 @@ export interface FoliateView extends HTMLElement {
   init: (options: { lastLocation: string }) => void;
   goTo: (href: string) => void;
   goToFraction: (fraction: number) => void;
-  prev: (distance: number) => void;
-  next: (distance: number) => void;
+  prev: (distance?: number) => void;
+  next: (distance?: number) => void;
   goLeft: () => void;
   goRight: () => void;
   getCFI: (index: number, range: Range) => string;
diff --git a/apps/readest-app/src/utils/style.ts b/apps/readest-app/src/utils/style.ts
index e32d06b8..aeecc629 100644
--- a/apps/readest-app/src/utils/style.ts
+++ b/apps/readest-app/src/utils/style.ts
@@ -248,6 +248,10 @@ const getLayoutStyles = (
     hanging-punctuation: allow-end last;
     widows: 2;
   }
+  p:has(> img:only-child) {
+    text-indent: unset !important;
+    text-align: unset !important;
+  }
   p, div {
     ${vertical ? `margin-left: ${paragraphMargin}em ${overrideLayout ? '!important' : ''};` : ''}
     ${vertical ? `margin-right: ${paragraphMargin}em ${overrideLayout ? '!important' : ''};` : ''}