Setting for themed epubs

src/app/epub/[id]/page.tsx

@@ -20,7 +20,6 @@ export default function EPUBPage() {
   const [isSettingsOpen, setIsSettingsOpen] = useState(false);
 
   const loadDocument = useCallback(async () => {
-    if (!isLoading) return;
     console.log('Loading new epub (from page.tsx)');
     stop(); // Reset TTS when loading new document
 
@@ -36,11 +35,13 @@ export default function EPUBPage() {
     } finally {
       setIsLoading(false);
     }
-  }, [isLoading, id, setCurrentDocument, stop]);
+  }, [id, setCurrentDocument, stop]);
 
   useEffect(() => {
+    if (!isLoading) return;
+
     loadDocument();
-  }, [loadDocument]);
+  }, [loadDocument, isLoading]);
 
   if (error) {
     return (

src/components/DocumentSettings.tsx

@@ -18,7 +18,7 @@ const viewTypes = [
 ];
 
 export function DocumentSettings({ isOpen, setIsOpen, epub }: DocViewSettingsProps) {
-  const { viewType, skipBlank, updateConfigKey } = useConfig();
+  const { viewType, skipBlank, epubTheme, updateConfigKey } = useConfig();
   const selectedView = viewTypes.find(v => v.id === viewType) || viewTypes[0];
 
   return (
@@ -124,6 +124,22 @@ export function DocumentSettings({ isOpen, setIsOpen, epub }: DocViewSettingsPro
                         Automatically skip pages with no text content
                       </p>
                     </div>
+                    {epub && (
+                      <div className="space-y-2">
+                        <label className="flex items-center space-x-2">
+                          <input
+                            type="checkbox"
+                            checked={epubTheme}
+                            onChange={(e) => updateConfigKey('epubTheme', e.target.checked)}
+                            className="form-checkbox h-4 w-4 text-accent rounded border-muted"
+                          />
+                          <span className="text-sm font-medium text-foreground">Use theme (experimental)</span>
+                        </label>
+                        <p className="text-sm text-muted pl-6">
+                          Apply the current app theme to the EPUB viewer
+                        </p>
+                      </div>
+                    )}
                   </div>
                 </div>
 

src/components/EPUBViewer.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useEffect, useRef, useCallback } from 'react';
+import { useEffect, useRef, useCallback, useState } from 'react';
 import { useParams } from 'next/navigation';
 import dynamic from 'next/dynamic';
 import { useEPUB } from '@/contexts/EPUBContext';
@@ -9,12 +9,80 @@ import { DocumentSkeleton } from '@/components/DocumentSkeleton';
 import TTSPlayer from '@/components/player/TTSPlayer';
 import { setLastDocumentLocation } from '@/utils/indexedDB';
 import type { Rendition, Book, NavItem } from 'epubjs';
+import { ReactReaderStyle, type IReactReaderStyle } from 'react-reader';
+import { useConfig } from '@/contexts/ConfigContext';
 
 const ReactReader = dynamic(() => import('react-reader').then(mod => mod.ReactReader), {
   ssr: false,
   loading: () => <DocumentSkeleton />
 });
 
+const colors = {
+  background: getComputedStyle(document.documentElement).getPropertyValue('--background'),
+  foreground: getComputedStyle(document.documentElement).getPropertyValue('--foreground'),
+  base: getComputedStyle(document.documentElement).getPropertyValue('--base'),
+  offbase: getComputedStyle(document.documentElement).getPropertyValue('--offbase'),
+  muted: getComputedStyle(document.documentElement).getPropertyValue('--muted'),
+};
+
+const getThemeStyles = (): IReactReaderStyle => {
+  const baseStyle = {
+    ...ReactReaderStyle,
+    readerArea: {
+      ...ReactReaderStyle.readerArea,
+      transition: undefined,
+    }
+  };
+
+  return {
+    ...baseStyle,
+    arrow: {
+      ...baseStyle.arrow,
+      color: colors.foreground,
+    },
+    arrowHover: {
+      ...baseStyle.arrowHover,
+      color: colors.muted,
+    },
+    readerArea: {
+      ...baseStyle.readerArea,
+      backgroundColor: colors.base,
+    },
+    titleArea: {
+      ...baseStyle.titleArea,
+      color: colors.foreground,
+      display: 'none',
+    },
+    tocArea: {
+      ...baseStyle.tocArea,
+      background: colors.base,
+    },
+    tocButtonExpanded: {
+      ...baseStyle.tocButtonExpanded,
+      background: colors.offbase,
+    },
+    tocButtonBar: {
+      ...baseStyle.tocButtonBar,
+      background: colors.muted,
+    },
+    tocButton: {
+      ...baseStyle.tocButton,
+      color: colors.muted,
+    },
+    tocAreaButton: {
+      ...baseStyle.tocAreaButton,
+      color: colors.muted,
+      backgroundColor: colors.offbase,
+      padding: '0.25rem',
+      paddingLeft: '0.5rem',
+      paddingRight: '0.5rem',
+      marginBottom: '0.25rem',
+      borderRadius: '0.25rem',
+      borderColor: 'transparent',
+    },
+  };
+};
+
 interface EPUBViewerProps {
   className?: string;
 }
@@ -23,13 +91,16 @@ export function EPUBViewer({ className = '' }: EPUBViewerProps) {
   const { id } = useParams();
   const { currDocData, currDocName, currDocPage, extractPageText } = useEPUB();
   const { setEPUBPageInChapter, registerLocationChangeHandler } = useTTS();
+  const { epubTheme } = useConfig();
   const bookRef = useRef<Book | null>(null);
   const rendition = useRef<Rendition | undefined>(undefined);
   const toc = useRef<NavItem[]>([]);
   const locationRef = useRef<string | number>(currDocPage);
-  
+  const [reloadKey, setReloadKey] = useState(0);
+  const [initialPrevLocLoad, setInitialPrevLocLoad] = useState(false);
 
   const handleLocationChanged = useCallback((location: string | number, initial = false) => {
+    if (!bookRef.current?.isOpen) return;
     // Handle special 'next' and 'prev' cases, which 
     if (location === 'next' && rendition.current) {
       rendition.current.next();
@@ -60,17 +131,55 @@ export function EPUBViewer({ className = '' }: EPUBViewerProps) {
       
       // Add a small delay for initial load to ensure rendition is ready
       if (initial) {
-        setTimeout(() => {
+        setInitialPrevLocLoad(true);
-          if (bookRef.current && rendition.current) {
-            extractPageText(bookRef.current, rendition.current);
-          }
-        }, 100);
       } else {
         extractPageText(bookRef.current, rendition.current);
       }
     }
   }, [id, setEPUBPageInChapter, extractPageText]);
 
+  // Load the initial location
+  useEffect(() => {
+    if (bookRef.current && rendition.current) {
+      extractPageText(bookRef.current, rendition.current);
+    }
+  }, [extractPageText, initialPrevLocLoad]);
+
+  const updateTheme = useCallback((rendition: Rendition) => {
+    if (!epubTheme) return; // Only apply theme if enabled
+    
+    rendition.themes.override('color', colors.foreground);
+    rendition.themes.override('background', colors.base);
+  }, [epubTheme]);
+
+  // Watch for theme changes
+  useEffect(() => {
+    if (!epubTheme || !bookRef.current?.isOpen || !rendition.current) return;
+
+    const observer = new MutationObserver((mutations) => {
+      mutations.forEach((mutation) => {
+        if (mutation.attributeName === 'class') {
+          if (epubTheme) {
+            setReloadKey(prev => prev + 1);
+          }
+        }
+      });
+    });
+
+    observer.observe(document.documentElement, {
+      attributes: true,
+      attributeFilter: ['class']
+    });
+
+    return () => observer.disconnect();
+  }, [epubTheme]);
+
+  // Watch for epubTheme changes
+  useEffect(() => {
+    if (!epubTheme || !bookRef.current?.isOpen || !rendition.current) return;
+    setReloadKey(prev => prev + 1);
+  }, [epubTheme]);
+
   // Register the location change handler
   useEffect(() => {
     registerLocationChangeHandler(handleLocationChanged);
@@ -87,13 +196,17 @@ export function EPUBViewer({ className = '' }: EPUBViewerProps) {
       </div>
       <div className="flex-1 -mt-16 pt-16">
         <ReactReader
+          key={reloadKey} // Add this line to force remount
           location={locationRef.current}
           locationChanged={handleLocationChanged}
           url={currDocData}
           title={currDocName}
           tocChanged={(_toc) => (toc.current = _toc)}
           showToc={true}
+          readerStyles={epubTheme && getThemeStyles() || undefined}
           getRendition={(_rendition: Rendition) => {
+            updateTheme(_rendition);
+
             bookRef.current = _rendition.book;
             rendition.current = _rendition;
           }}

src/components/player/TTSPlayer.tsx

@@ -31,7 +31,7 @@ export default function TTSPlayer({ currentPage, numPages }: {
 
   return (
     <div className={`fixed bottom-4 left-1/2 transform -translate-x-1/2 z-49 transition-opacity duration-300`}>
-      <div className="bg-base dark:bg-base rounded-full shadow-lg px-3 sm:px-4 py-0.5 sm:py-1 flex items-center space-x-0.5 sm:space-x-1 relative scale-90 sm:scale-100">
+      <div className="bg-base dark:bg-base rounded-full shadow-lg px-3 sm:px-4 py-0.5 sm:py-1 flex items-center space-x-0.5 sm:space-x-1 relative scale-90 sm:scale-100 border border-offbase">
         {/* Speed control */}
         <SpeedControl setSpeedAndRestart={setSpeedAndRestart} />
 

src/contexts/ConfigContext.tsx

@@ -11,6 +11,7 @@ interface ConfigContextType {
   voiceSpeed: number;
   voice: string;
   skipBlank: boolean;
+  epubTheme: boolean;  // Add this line
   updateConfig: (newConfig: Partial<{ apiKey: string; baseUrl: string; viewType: ViewType }>) => Promise<void>;
   updateConfigKey: <K extends keyof ConfigValues>(key: K, value: ConfigValues[K]) => Promise<void>;
   isLoading: boolean;
@@ -25,6 +26,7 @@ type ConfigValues = {
   voiceSpeed: number;
   voice: string;
   skipBlank: boolean;
+  epubTheme: boolean;  // Add this line
 };
 
 const ConfigContext = createContext<ConfigContextType | undefined>(undefined);
@@ -37,6 +39,7 @@ export function ConfigProvider({ children }: { children: ReactNode }) {
   const [voiceSpeed, setVoiceSpeed] = useState<number>(1);
   const [voice, setVoice] = useState<string>('af_sarah');
   const [skipBlank, setSkipBlank] = useState<boolean>(true);
+  const [epubTheme, setEpubTheme] = useState<boolean>(false);
 
   const [isLoading, setIsLoading] = useState(true);
   const [isDBReady, setIsDBReady] = useState(false);
@@ -55,6 +58,7 @@ export function ConfigProvider({ children }: { children: ReactNode }) {
         const cachedVoiceSpeed = await getItem('voiceSpeed');
         const cachedVoice = await getItem('voice');
         const cachedSkipBlank = await getItem('skipBlank');
+        const cachedEpubTheme = await getItem('epubTheme');
 
         if (cachedApiKey) console.log('Cached API key found:', cachedApiKey);
         if (cachedBaseUrl) console.log('Cached base URL found:', cachedBaseUrl);
@@ -62,6 +66,7 @@ export function ConfigProvider({ children }: { children: ReactNode }) {
         if (cachedVoiceSpeed) console.log('Cached voice speed found:', cachedVoiceSpeed);
         if (cachedVoice) console.log('Cached voice found:', cachedVoice);
         if (cachedSkipBlank) console.log('Cached skip blank found:', cachedSkipBlank);
+        if (cachedEpubTheme) console.log('Cached EPUB theme found:', cachedEpubTheme);
 
         // If not in cache, use env variables
         const defaultApiKey = process.env.NEXT_PUBLIC_OPENAI_API_KEY || '1234567890';
@@ -74,6 +79,7 @@ export function ConfigProvider({ children }: { children: ReactNode }) {
         setVoiceSpeed(parseFloat(cachedVoiceSpeed || '1'));
         setVoice(cachedVoice || 'af_sarah');
         setSkipBlank(cachedSkipBlank === 'false' ? false : true);
+        setEpubTheme(cachedEpubTheme === 'true');
 
         // If not in cache, save to cache
         if (!cachedApiKey) {
@@ -88,6 +94,9 @@ export function ConfigProvider({ children }: { children: ReactNode }) {
         if (cachedSkipBlank === null) {
           await setItem('skipBlank', 'true');
         }
+        if (cachedEpubTheme === null) {
+          await setItem('epubTheme', 'false');
+        }
         
       } catch (error) {
         console.error('Error initializing:', error);
@@ -137,6 +146,9 @@ export function ConfigProvider({ children }: { children: ReactNode }) {
         case 'skipBlank':
           setSkipBlank(value as boolean);
           break;
+        case 'epubTheme':
+          setEpubTheme(value as boolean);
+          break;
       }
     } catch (error) {
       console.error(`Error updating config key ${key}:`, error);
@@ -152,6 +164,7 @@ export function ConfigProvider({ children }: { children: ReactNode }) {
       voiceSpeed,
       voice,
       skipBlank,
+      epubTheme,
       updateConfig, 
       updateConfigKey,
       isLoading, 

src/contexts/EPUBContext.tsx

@@ -85,8 +85,8 @@ export function EPUBProvider({ children }: { children: ReactNode }) {
    */
   const extractPageText = useCallback(async (book: Book, rendition: Rendition): Promise<string> => {
     try {      
-      const { start, end } = rendition.location;
+      const { start, end } = rendition?.location;
-      if (!start?.cfi || !end?.cfi) return '';
+      if (!start?.cfi || !end?.cfi || !book || !book.isOpen || !rendition) return '';
       
       const rangeCfi = createRangeCfi(start.cfi, end.cfi);