Refactor reader

app/src/main/java/org/koitharu/kotatsu/core/local/CbzFilter.kt

@@ -5,5 +5,6 @@ import java.io.FilenameFilter
 
 class CbzFilter : FilenameFilter {
 
-	override fun accept(dir: File, name: String) = name.endsWith(".cbz", ignoreCase = true)
+	override fun accept(dir: File, name: String) =
+		name.endsWith(".cbz", ignoreCase = true) || name.endsWith(".zip", ignoreCase = true)
 }

app/src/main/java/org/koitharu/kotatsu/core/parser/LocalMangaRepository.kt

@@ -16,6 +16,7 @@ import org.koitharu.kotatsu.utils.ext.readText
 import org.koitharu.kotatsu.utils.ext.safe
 import java.io.File
 import java.util.*
+import java.util.zip.ZipEntry
 import java.util.zip.ZipFile
 
 class LocalMangaRepository(loaderContext: MangaLoaderContext) : BaseMangaRepository(loaderContext) {
@@ -68,7 +69,11 @@ class LocalMangaRepository(loaderContext: MangaLoaderContext) : BaseMangaReposit
 				x.copy(
 					source = MangaSource.LOCAL,
 					url = fileUri,
-					coverUrl = zipUri(file, it.getCoverEntry() ?: zip.entries().nextElement().name),
+					coverUrl = zipUri(
+						file,
+						entryName = it.getCoverEntry()
+							?: findFirstEntry(zip.entries())?.name.orEmpty()
+					),
 					chapters = x.chapters?.map { c -> c.copy(url = fileUri) }
 				)
 			}
@@ -79,7 +84,7 @@ class LocalMangaRepository(loaderContext: MangaLoaderContext) : BaseMangaReposit
 				title = title,
 				url = fileUri,
 				source = MangaSource.LOCAL,
-				coverUrl = zipUri(file, zip.entries().nextElement().name),
+				coverUrl = zipUri(file, findFirstEntry(zip.entries())?.name.orEmpty()),
 				chapters = listOf(
 					MangaChapter(
 						id = file.absolutePath.longHashCode(),
@@ -101,6 +106,13 @@ class LocalMangaRepository(loaderContext: MangaLoaderContext) : BaseMangaReposit
 	private fun zipUri(file: File, entryName: String) =
 		Uri.fromParts("cbz", file.path, entryName).toString()
 
+	private fun findFirstEntry(entries: Enumeration<out ZipEntry>): ZipEntry? {
+		val list = entries.toList()
+			.filterNot { it.isDirectory }
+			.sortedWith(compareBy(AlphanumComparator()) { x -> x.name })
+		return list.firstOrNull()
+	}
+
 	companion object {
 
 		fun isFileSupported(name: String): Boolean {

app/src/main/java/org/koitharu/kotatsu/ui/download/DownloadNotification.kt

@@ -36,7 +36,6 @@ class DownloadNotification(private val context: Context) {
 		builder.setContentText(context.getString(R.string.manga_downloading_))
 		builder.setProgress(1, 0, true)
 		builder.setSmallIcon(android.R.drawable.stat_sys_download)
-		builder.setSubText(context.getText(R.string.preparing_))
 		builder.setLargeIcon(null)
 	}
 
@@ -50,19 +49,18 @@ class DownloadNotification(private val context: Context) {
 			chapter * PROGRESS_STEP + (page / pagesTotal.toFloat() * PROGRESS_STEP).roundToInt()
 		val percent = (progress / max.toFloat() * 100).roundToInt()
 		builder.setProgress(max, progress, false)
-		builder.setSubText("$percent%")
+		builder.setContentText(context.getString(R.string.downloading_d_percent, percent))
 	}
 
 	fun setPostProcessing() {
 		builder.setProgress(1, 0, true)
-		builder.setSubText(context.getString(R.string.processing_))
+		builder.setContentText(context.getString(R.string.processing_))
 	}
 
 	fun setDone() {
 		builder.setProgress(0, 0, false)
 		builder.setContentText(context.getString(R.string.download_complete))
 		builder.setSmallIcon(android.R.drawable.stat_sys_download_done)
-		builder.setSubText(null)
 	}
 
 	fun update(id: Int = NOTIFICATION_ID) {

app/src/main/java/org/koitharu/kotatsu/ui/reader/BaseReaderFragment.kt

@@ -0,0 +1,34 @@
+package org.koitharu.kotatsu.ui.reader
+
+import android.net.Uri
+import androidx.annotation.LayoutRes
+import org.koitharu.kotatsu.core.model.MangaPage
+import org.koitharu.kotatsu.ui.common.BaseFragment
+
+abstract class BaseReaderFragment(@LayoutRes contentLayoutId: Int) : BaseFragment(contentLayoutId), ReaderView {
+
+	abstract val hasItems: Boolean
+
+	abstract val currentPageIndex: Int
+
+	abstract val pages: List<MangaPage>
+
+	abstract fun setCurrentPage(index: Int, smooth: Boolean)
+
+	val currentPage get() = pages.getOrNull(currentPageIndex)
+
+	/**
+	 * Handled by activity
+	 */
+	override fun onLoadingStateChanged(isLoading: Boolean) = Unit
+
+	/**
+	 * Handled by activity
+	 */
+	override fun onError(e: Exception) = Unit
+
+	/**
+	 * Handled by activity
+	 */
+	override fun onPageSaved(uri: Uri?) = Unit
+}

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderActivity.kt

@@ -12,6 +12,7 @@ import android.view.MotionEvent
 import android.widget.Toast
 import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
+import androidx.fragment.app.commit
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.activity_reader.*
 import moxy.MvpDelegate
@@ -22,6 +23,7 @@ import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaHistory
 import org.koitharu.kotatsu.core.model.MangaPage
 import org.koitharu.kotatsu.ui.common.BaseFullscreenActivity
+import org.koitharu.kotatsu.ui.reader.standard.StandardReaderFragment
 import org.koitharu.kotatsu.ui.reader.thumbnails.OnPageSelectListener
 import org.koitharu.kotatsu.ui.reader.thumbnails.PagesThumbnailsSheet
 import org.koitharu.kotatsu.utils.GridTouchHelper
@@ -32,14 +34,15 @@ import org.koitharu.kotatsu.utils.ext.*
 class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnChapterChangeListener,
 	GridTouchHelper.OnGridTouchListener, OnPageSelectListener {
 
-	private val presenter by moxyPresenter(factory = ::ReaderPresenter)
+	private val presenter by moxyPresenter(factory = ReaderPresenter.Companion::getInstance)
 
 	private lateinit var state: ReaderState
 
-	private lateinit var loader: PageLoader
-	private lateinit var adapter: PagesAdapter
 	private lateinit var touchHelper: GridTouchHelper
 
+	private val reader
+		get() = supportFragmentManager.findFragmentById(R.id.container) as? BaseReaderFragment
+
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_reader)
@@ -67,23 +70,22 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 			insets
 		}
 
-		loader = PageLoader()
-		adapter = PagesAdapter(loader)
-		pager.adapter = adapter
-		pager.offscreenPageLimit = 2
+		if (reader == null) {
+			supportFragmentManager.commit {
+				replace(R.id.container, StandardReaderFragment())
+			}
+		}
+
 		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
 			presenter.loadChapter(state)
 		}
 	}
 
-	override fun onDestroy() {
-		loader.dispose()
-		super.onDestroy()
-	}
-
 	override fun onPause() {
-		state = state.copy(page = pager.currentItem)
-		presenter.saveState(state)
+		reader?.let {
+			state = state.copy(page = it.currentPageIndex)
+			presenter.saveState(state)
+		}
 		super.onPause()
 	}
 
@@ -102,9 +104,9 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 			true
 		}
 		R.id.action_pages_thumbs -> {
-			if (adapter.hasItems) {
+			if (reader?.hasItems == true) {
 				PagesThumbnailsSheet.show(
-					supportFragmentManager, adapter.items,
+					supportFragmentManager, reader!!.pages,
 					state.chapter?.name ?: title?.toString().orEmpty()
 				)
 			} else {
@@ -113,10 +115,13 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 			true
 		}
 		R.id.action_save_page -> {
-			if (adapter.hasItems) {
+			if (reader?.hasItems == true) {
 				requestPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) {
 					if (it) {
-						presenter.savePage(contentResolver, adapter.getItem(pager.currentItem))
+						presenter.savePage(
+							resolver = contentResolver,
+							page = reader?.currentPage ?: return@requestPermission
+						)
 					}
 				}
 			} else {
@@ -128,8 +133,7 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 	}
 
 	override fun onPagesReady(pages: List<MangaPage>, index: Int) {
-		adapter.replaceData(pages)
-		pager.setCurrentItem(index, false)
+
 	}
 
 	override fun onLoadingStateChanged(isLoading: Boolean) {
@@ -141,7 +145,7 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 			setTitle(R.string.error_occurred)
 			setMessage(e.message)
 			setPositiveButton(R.string.close, null)
-			if (!adapter.hasItems) {
+			if (reader?.hasItems != true) {
 				setOnDismissListener {
 					finish()
 				}
@@ -164,20 +168,22 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 			}
 			GridTouchHelper.AREA_TOP,
 			GridTouchHelper.AREA_LEFT -> {
-				pager.setCurrentItem(pager.currentItem - 1, true)
+				reader?.let {
+					it.setCurrentPage(it.currentPageIndex - 1, true)
+				}
 			}
 			GridTouchHelper.AREA_BOTTOM,
 			GridTouchHelper.AREA_RIGHT -> {
-				pager.setCurrentItem(pager.currentItem + 1, true)
+				reader?.let {
+					it.setCurrentPage(it.currentPageIndex + 1, true)
+				}
 			}
 		}
 	}
 
 	override fun onProcessTouch(rawX: Int, rawY: Int): Boolean {
-		return if (appbar_top.hasGlobalPoint(rawX, rawY) || appbar_bottom.hasGlobalPoint(
-				rawX,
-				rawY
-			)
+		return if (appbar_top.hasGlobalPoint(rawX, rawY)
+			|| appbar_bottom.hasGlobalPoint(rawX, rawY)
 		) {
 			false
 		} else {
@@ -201,20 +207,22 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 	}
 
 	override fun onPageSelected(page: MangaPage) {
-		val index = adapter.items.indexOfFirst { x -> x.id == page.id }
-		if (index != -1) {
-			pager.setCurrentItem(index, false)
+		reader?.let {
+			val index = it.pages.indexOfFirst { x -> x.id == page.id }
+			if (index != -1) {
+				it.setCurrentPage(index, false)
+			}
 		}
 	}
 
 	override fun onPageSaved(uri: Uri?) {
 		if (uri != null) {
-			Snackbar.make(pager, R.string.page_saved, Snackbar.LENGTH_LONG)
+			Snackbar.make(container, R.string.page_saved, Snackbar.LENGTH_LONG)
 				.setAction(R.string.share) {
 					ShareHelper.shareImage(this, uri)
 				}.show()
 		} else {
-			Snackbar.make(pager, R.string.error_occurred, Snackbar.LENGTH_SHORT).show()
+			Snackbar.make(container, R.string.error_occurred, Snackbar.LENGTH_SHORT).show()
 		}
 	}
 

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderPresenter.kt

@@ -84,4 +84,20 @@ class ReaderPresenter : BasePresenter<ReaderView>() {
 		}
 	}
 
+	override fun onDestroy() {
+		instance = null
+		super.onDestroy()
+	}
+
+	companion object {
+
+		private var instance: ReaderPresenter? = null
+
+		fun getInstance(): ReaderPresenter = instance ?: synchronized(this) {
+			ReaderPresenter().also {
+				instance = it
+			}
+		}
+	}
+
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderView.kt

@@ -2,22 +2,21 @@ package org.koitharu.kotatsu.ui.reader
 
 import android.net.Uri
 import moxy.MvpView
-import moxy.viewstate.strategy.AddToEndSingleStrategy
-import moxy.viewstate.strategy.OneExecutionStateStrategy
-import moxy.viewstate.strategy.StateStrategyType
+import moxy.viewstate.strategy.alias.AddToEndSingle
+import moxy.viewstate.strategy.alias.OneExecution
 import org.koitharu.kotatsu.core.model.MangaPage
 
 interface ReaderView : MvpView {
 
-	@StateStrategyType(AddToEndSingleStrategy::class)
+	@AddToEndSingle
 	fun onPagesReady(pages: List<MangaPage>, index: Int)
 
-	@StateStrategyType(AddToEndSingleStrategy::class)
+	@AddToEndSingle
 	fun onLoadingStateChanged(isLoading: Boolean)
 
-	@StateStrategyType(OneExecutionStateStrategy::class)
+	@OneExecution
 	fun onError(e: Exception)
 
-	@StateStrategyType(OneExecutionStateStrategy::class)
+	@OneExecution
 	fun onPageSaved(uri: Uri?)
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/standard/PageHolder.kt

@@ -1,4 +1,4 @@
-package org.koitharu.kotatsu.ui.reader
+package org.koitharu.kotatsu.ui.reader.standard
 
 import android.view.ViewGroup
 import androidx.core.net.toUri
@@ -10,6 +10,7 @@ import kotlinx.coroutines.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaPage
 import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
+import org.koitharu.kotatsu.ui.reader.PageLoader
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 
 class PageHolder(parent: ViewGroup, private val loader: PageLoader) :

app/src/main/java/org/koitharu/kotatsu/ui/reader/standard/PagesAdapter.kt

@@ -1,12 +1,14 @@
-package org.koitharu.kotatsu.ui.reader
+package org.koitharu.kotatsu.ui.reader.standard
 
 import android.view.ViewGroup
 import org.koitharu.kotatsu.core.model.MangaPage
 import org.koitharu.kotatsu.ui.common.list.BaseRecyclerAdapter
+import org.koitharu.kotatsu.ui.reader.PageLoader
 
 class PagesAdapter(private val loader: PageLoader) : BaseRecyclerAdapter<MangaPage, Unit>() {
 
-	override fun onCreateViewHolder(parent: ViewGroup) = PageHolder(parent, loader)
+	override fun onCreateViewHolder(parent: ViewGroup) =
+		PageHolder(parent, loader)
 
 	override fun onGetItemId(item: MangaPage) = item.id
 

app/src/main/java/org/koitharu/kotatsu/ui/reader/standard/StandardReaderFragment.kt

@@ -0,0 +1,56 @@
+package org.koitharu.kotatsu.ui.reader.standard
+
+import android.os.Bundle
+import android.view.View
+import kotlinx.android.synthetic.main.fragment_reader_standard.*
+import moxy.ktx.moxyPresenter
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.MangaPage
+import org.koitharu.kotatsu.ui.reader.BaseReaderFragment
+import org.koitharu.kotatsu.ui.reader.PageLoader
+import org.koitharu.kotatsu.ui.reader.ReaderPresenter
+
+class StandardReaderFragment : BaseReaderFragment(R.layout.fragment_reader_standard) {
+
+	private val presenter by moxyPresenter(factory = ReaderPresenter.Companion::getInstance)
+
+	private var adapter: PagesAdapter? = null
+	private lateinit var loader: PageLoader
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+		loader = PageLoader()
+	}
+
+	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+		super.onViewCreated(view, savedInstanceState)
+		adapter = PagesAdapter(loader)
+		pager.adapter = adapter
+		pager.offscreenPageLimit = 2
+	}
+
+	override fun onPagesReady(pages: List<MangaPage>, index: Int) {
+		adapter?.let {
+			it.replaceData(pages)
+			pager.setCurrentItem(index, false)
+		}
+	}
+
+	override fun onDestroy() {
+		loader.dispose()
+		super.onDestroy()
+	}
+
+	override val hasItems: Boolean
+		get() = adapter?.hasItems == true
+
+	override val currentPageIndex: Int
+		get() = pager.currentItem
+
+	override val pages: List<MangaPage>
+		get() = adapter?.items.orEmpty()
+
+	override fun setCurrentPage(index: Int, smooth: Boolean) {
+		pager.setCurrentItem(index, smooth)
+	}
+}

app/src/main/res/layout/activity_reader.xml

@@ -4,11 +4,11 @@
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	android:id="@+id/rootLayout"
 	android:layout_width="match_parent"
-	android:layout_height="match_parent">
+	android:layout_height="match_parent"
+	android:keepScreenOn="true">
 
-	<androidx.viewpager2.widget.ViewPager2
-		android:id="@+id/pager"
-		android:keepScreenOn="true"
+	<androidx.fragment.app.FragmentContainerView
+		android:id="@+id/container"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent" />
 

app/src/main/res/layout/fragment_reader_standard.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.viewpager2.widget.ViewPager2
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:id="@+id/pager"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent" />

app/src/main/res/values/strings.xml

@@ -79,4 +79,5 @@
 	<string name="clear_pages_cache">Clear pages cache</string>
 	<string name="cache">Cache</string>
 	<string name="text_file_sizes">B|kB|MB|GB|TB</string>
+	<string name="downloading_d_percent">Downloading: %d%%</string>
 </resources>