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245
app/src/main/java/com/aryan/reader/AppNavigation.kt
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245
app/src/main/java/com/aryan/reader/AppNavigation.kt
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// AppNavigation.kt
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package com.aryan.reader
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import android.os.Build
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import timber.log.Timber
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import androidx.annotation.RequiresApi
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import androidx.compose.foundation.layout.Arrangement
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.Column
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import androidx.compose.foundation.layout.Spacer
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import androidx.compose.foundation.layout.fillMaxSize
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import androidx.compose.foundation.layout.height
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import androidx.compose.foundation.layout.padding
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import androidx.compose.material3.Button
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import androidx.compose.material3.CircularProgressIndicator
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import androidx.compose.material3.ExperimentalMaterial3Api
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import androidx.compose.material3.MaterialTheme
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import androidx.compose.material3.Text
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import androidx.compose.material3.windowsizeclass.WindowSizeClass
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.LaunchedEffect
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import androidx.compose.runtime.getValue
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.unit.dp
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import androidx.lifecycle.compose.collectAsStateWithLifecycle
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import androidx.navigation.NavHostController
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import androidx.navigation.compose.NavHost
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import androidx.navigation.compose.composable
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import com.aryan.reader.epubreader.EpubReaderScreen
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import com.aryan.reader.feedback.FeedbackScreen
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import com.aryan.reader.pdf.PdfViewerScreen
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object AppDestinations {
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const val MAIN_ROUTE = "main"
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const val PDF_VIEWER_ROUTE = "pdf_viewer"
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const val EPUB_READER_ROUTE = "epub_reader"
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const val PRO_SCREEN_ROUTE = "pro_screen"
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const val FEEDBACK_SCREEN_ROUTE = "feedback_screen_route"
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const val FONTS_SCREEN_ROUTE = "fonts_screen_route"
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}
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@OptIn(ExperimentalMaterial3Api::class)
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@RequiresApi(Build.VERSION_CODES.VANILLA_ICE_CREAM)
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@Composable
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fun AppNavigation(
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navController: NavHostController,
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windowSizeClass: WindowSizeClass,
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viewModel: MainViewModel
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) {
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Timber.d("AppNavigation composable invoked.")
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val uiState by viewModel.uiState.collectAsStateWithLifecycle()
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NavHost(navController = navController, startDestination = AppDestinations.MAIN_ROUTE) {
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composable(AppDestinations.MAIN_ROUTE) {
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Timber.d("Navigating to Main Screen (${AppDestinations.MAIN_ROUTE}).")
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MainScreen(
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viewModel = viewModel,
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windowSizeClass = windowSizeClass,
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navController = navController
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)
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LaunchedEffect(uiState.selectedFileType, uiState.isLoading, uiState.selectedEpubBook, uiState.selectedPdfUri) {
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if (!uiState.isLoading) {
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when (uiState.selectedFileType) {
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FileType.PDF -> {
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if (uiState.selectedPdfUri != null) {
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Timber.d("Navigating to PDF Viewer. Route: ${AppDestinations.PDF_VIEWER_ROUTE}")
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if (navController.currentDestination?.route != AppDestinations.PDF_VIEWER_ROUTE) {
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navController.navigate(AppDestinations.PDF_VIEWER_ROUTE)
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}
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}
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}
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FileType.EPUB, FileType.MOBI, FileType.MD, FileType.TXT, FileType.HTML -> {
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if (uiState.selectedEpubBook != null) {
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Timber.d("Navigating to EPUB Reader for ${uiState.selectedFileType}. Route: ${AppDestinations.EPUB_READER_ROUTE}")
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if (navController.currentDestination?.route != AppDestinations.EPUB_READER_ROUTE) {
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navController.navigate(AppDestinations.EPUB_READER_ROUTE)
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}
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} else if (uiState.selectedEpubUri != null && uiState.errorMessage == null) {
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Timber.d("${uiState.selectedFileType} selected, waiting for parsing/loading before navigation.")
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} else if (uiState.errorMessage != null) {
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Timber.w("${uiState.selectedFileType} loading failed, staying on Home. Error: ${uiState.errorMessage}")
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}
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}
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null -> {
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if (navController.currentDestination?.route != AppDestinations.MAIN_ROUTE) {
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Timber.d("File cleared, ensuring navigation back to Main Screen.")
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navController.popBackStack(AppDestinations.MAIN_ROUTE, inclusive = false)
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}
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}
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}
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}
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}
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}
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// PDF Viewer Screen Composable
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composable(route = AppDestinations.PDF_VIEWER_ROUTE) {
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Timber.d("Navigating to PDF Viewer Screen (${AppDestinations.PDF_VIEWER_ROUTE}).")
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val pdfUri = uiState.selectedPdfUri
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val initialPage = uiState.initialPageInBook
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val initialBookmarksJson = uiState.initialBookmarksJson
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val bookId = uiState.recentFiles.find { it.uriString == uiState.selectedPdfUri.toString() }?.bookId
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if (pdfUri != null) {
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Timber.i("Displaying PDF Viewer for URI: $pdfUri, initialPage: $initialPage")
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PdfViewerScreen(
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pdfUri = pdfUri,
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initialPage = initialPage,
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initialBookmarksJson = initialBookmarksJson,
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isProUser = uiState.isProUser,
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pendingSyncUpdate = uiState.pendingSyncUpdate?.takeIf { it.bookId == bookId },
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onClearPendingSyncUpdate = viewModel::clearPendingSyncUpdate,
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onNavigateBack = {
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Timber.d("Back action triggered from PDF Viewer.")
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viewModel.clearSelectedFile()
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},
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onSavePosition = viewModel::savePdfReadingPosition,
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onBookmarksChanged = { bookmarksJson ->
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if (bookId != null) {
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viewModel.saveBookmarks(bookId, bookmarksJson)
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} else {
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Timber.w("Could not find bookId to save PDF bookmarks for URI: ${uiState.selectedPdfUri}")
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}
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},
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onNavigateToPro = {
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navController.navigate(AppDestinations.PRO_SCREEN_ROUTE)
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},
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viewModel = viewModel
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)
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} else {
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Timber.w("PDF URI is null in ViewModel state while on PDF screen. Navigating back to Main.")
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LaunchedEffect(Unit) {
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navController.popBackStack(AppDestinations.MAIN_ROUTE, inclusive = false)
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}
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}
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}
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// EPUB Reader Screen Composable
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composable(route = AppDestinations.EPUB_READER_ROUTE) {
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Timber.d("Navigating to EPUB Reader Screen (${AppDestinations.EPUB_READER_ROUTE}).")
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val epubBook = uiState.selectedEpubBook
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val isLoading = uiState.isLoading
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val errorMessage = uiState.errorMessage
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val initialLocator = uiState.initialLocator
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val initialCfi = uiState.initialCfi
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val initialBookmarksJson = uiState.initialBookmarksJson
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val renderMode = uiState.renderMode
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when {
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epubBook != null -> {
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Timber.i("Displaying EPUB Reader for Book: ${epubBook.title}, initialLocator: $initialLocator")
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val coverPath = uiState.recentFiles.find { it.uriString == uiState.selectedEpubUri.toString() }?.coverImagePath
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val epubUri = uiState.selectedEpubUri
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val bookId = uiState.recentFiles.find { it.uriString == uiState.selectedEpubUri.toString() }?.bookId
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val customFonts by viewModel.customFonts.collectAsStateWithLifecycle()
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EpubReaderScreen(
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epubBook = epubBook,
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renderMode = renderMode,
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initialLocator = initialLocator,
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initialCfi = initialCfi,
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initialBookmarksJson = initialBookmarksJson,
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isProUser = uiState.isProUser,
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coverImagePath = coverPath,
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pendingSyncUpdate = uiState.pendingSyncUpdate?.takeIf { it.bookId == bookId },
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onClearPendingSyncUpdate = viewModel::clearPendingSyncUpdate,
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onNavigateBack = {
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Timber.d("Back action from EPUB Reader. Clearing selected file to navigate home.")
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viewModel.clearSelectedFile()
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},
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onSavePosition = { locator, cfiForWebView, progress ->
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Timber.d("Auto-saving EPUB position: Locator $locator, Progress $progress%")
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epubUri?.let { uri ->
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viewModel.saveEpubReadingPosition(uri, locator, cfiForWebView, progress)
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}
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},
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onBookmarksChanged = { bookmarksJson ->
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val bookId = uiState.recentFiles.find { it.uriString == uiState.selectedEpubUri.toString() }?.bookId
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if (bookId != null) {
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viewModel.saveBookmarks(bookId, bookmarksJson)
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} else {
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Timber.w("Could not find bookId to save bookmarks for URI: ${uiState.selectedEpubUri}")
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}
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},
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onNavigateToPro = {
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navController.navigate(AppDestinations.PRO_SCREEN_ROUTE)
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},
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onRenderModeChange = viewModel::setRenderMode,
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customFonts = customFonts,
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onImportFont = viewModel::importFont,
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)
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}
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isLoading -> {
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Timber.d("EPUB Reader: Showing loading indicator.")
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Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
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CircularProgressIndicator()
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}
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}
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errorMessage != null -> {
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Timber.e("EPUB Reader: Showing error message - $errorMessage")
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Column(
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modifier = Modifier.fillMaxSize().padding(16.dp),
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horizontalAlignment = Alignment.CenterHorizontally,
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verticalArrangement = Arrangement.Center
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) {
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Text("Error: $errorMessage", color = MaterialTheme.colorScheme.error)
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Spacer(modifier = Modifier.height(16.dp))
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Button(onClick = {
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viewModel.clearSelectedFile()
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}) {
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Text("Go Back")
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}
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}
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}
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else -> {
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Timber.w("EPUB Book is null and not loading/error state on EPUB screen. Navigating back.")
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LaunchedEffect(Unit) {
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navController.popBackStack(AppDestinations.MAIN_ROUTE, inclusive = false)
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}
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}
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}
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}
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composable(route = AppDestinations.PRO_SCREEN_ROUTE) {
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ProScreen(
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viewModel = viewModel,
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onNavigateBack = { navController.popBackStack() }
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)
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}
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composable(route = AppDestinations.FEEDBACK_SCREEN_ROUTE) {
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FeedbackScreen(
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navController = navController
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)
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}
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composable(route = AppDestinations.FONTS_SCREEN_ROUTE) {
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FontsScreen(
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viewModel = viewModel,
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onBackClick = { navController.popBackStack() }
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)
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}
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}
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}
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