Share logic for saving page/cover (#6787)

* Use MediaStore on newer Android Q or newer

* Use flow instead of Observable

* Review comment fixes

* Use suspended function instead of flow

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt

@@ -3,7 +3,6 @@ package eu.kanade.tachiyomi.ui.reader
 import android.annotation.SuppressLint
 import android.annotation.TargetApi
 import android.app.ProgressDialog
-import android.content.ClipData
 import android.content.Context
 import android.content.Intent
 import android.content.res.ColorStateList
@@ -13,6 +12,7 @@ import android.graphics.ColorMatrix
 import android.graphics.ColorMatrixColorFilter
 import android.graphics.Paint
 import android.graphics.drawable.RippleDrawable
+import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.view.Gravity
@@ -69,13 +69,13 @@ import eu.kanade.tachiyomi.ui.reader.viewer.BaseViewer
 import eu.kanade.tachiyomi.ui.reader.viewer.ReaderProgressIndicator
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.R2LPagerViewer
 import eu.kanade.tachiyomi.util.preference.toggle
-import eu.kanade.tachiyomi.util.storage.getUriCompat
 import eu.kanade.tachiyomi.util.system.applySystemAnimatorScale
 import eu.kanade.tachiyomi.util.system.createReaderThemeContext
 import eu.kanade.tachiyomi.util.system.getThemeColor
 import eu.kanade.tachiyomi.util.system.hasDisplayCutout
 import eu.kanade.tachiyomi.util.system.isNightMode
 import eu.kanade.tachiyomi.util.system.logcat
+import eu.kanade.tachiyomi.util.system.toShareIntent
 import eu.kanade.tachiyomi.util.system.toast
 import eu.kanade.tachiyomi.util.view.copy
 import eu.kanade.tachiyomi.util.view.popupMenu
@@ -89,7 +89,6 @@ import kotlinx.coroutines.flow.sample
 import logcat.LogPriority
 import nucleus.factory.RequiresPresenter
 import uy.kohesive.injekt.injectLazy
-import java.io.File
 import kotlin.math.abs
 import kotlin.math.max
 
@@ -830,18 +829,14 @@ class ReaderActivity : BaseRxActivity<ReaderActivityBinding, ReaderPresenter>()
      * Called from the presenter when a page is ready to be shared. It shows Android's default
      * sharing tool.
      */
-    fun onShareImageResult(file: File, page: ReaderPage) {
+    fun onShareImageResult(uri: Uri, page: ReaderPage) {
         val manga = presenter.manga ?: return
         val chapter = page.chapter.chapter
 
-        val uri = file.getUriCompat(this)
-        val intent = Intent(Intent.ACTION_SEND).apply {
-            putExtra(Intent.EXTRA_TEXT, getString(R.string.share_page_info, manga.title, chapter.name, page.number))
-            putExtra(Intent.EXTRA_STREAM, uri)
-            clipData = ClipData.newRawUri(null, uri)
-            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_GRANT_READ_URI_PERMISSION
-            type = "image/*"
-        }
+        val intent = uri.toShareIntent(
+            context = applicationContext,
+            message = getString(R.string.share_page_info, manga.title, chapter.name, page.number)
+        )
         startActivity(Intent.createChooser(intent, getString(R.string.action_share)))
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt

@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.ui.reader
 
 import android.app.Application
+import android.net.Uri
 import android.os.Bundle
 import com.jakewharton.rxrelay.BehaviorRelay
 import eu.kanade.tachiyomi.R
@@ -10,6 +11,9 @@ import eu.kanade.tachiyomi.data.database.models.History
 import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.download.DownloadManager
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
+import eu.kanade.tachiyomi.data.saver.Image
+import eu.kanade.tachiyomi.data.saver.ImageSaver
+import eu.kanade.tachiyomi.data.saver.Location
 import eu.kanade.tachiyomi.data.track.TrackManager
 import eu.kanade.tachiyomi.data.track.job.DelayedTrackingStore
 import eu.kanade.tachiyomi.data.track.job.DelayedTrackingUpdateJob
@@ -28,11 +32,10 @@ import eu.kanade.tachiyomi.util.chapter.getChapterSort
 import eu.kanade.tachiyomi.util.isLocal
 import eu.kanade.tachiyomi.util.lang.byteSize
 import eu.kanade.tachiyomi.util.lang.launchIO
+import eu.kanade.tachiyomi.util.lang.launchUI
 import eu.kanade.tachiyomi.util.lang.takeBytes
 import eu.kanade.tachiyomi.util.storage.DiskUtil
-import eu.kanade.tachiyomi.util.storage.getPicturesDir
-import eu.kanade.tachiyomi.util.storage.getTempShareDir
-import eu.kanade.tachiyomi.util.system.ImageUtil
+import eu.kanade.tachiyomi.util.storage.cacheImageDir
 import eu.kanade.tachiyomi.util.system.isOnline
 import eu.kanade.tachiyomi.util.system.logcat
 import eu.kanade.tachiyomi.util.updateCoverLastModified
@@ -45,7 +48,7 @@ import rx.android.schedulers.AndroidSchedulers
 import rx.schedulers.Schedulers
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
-import java.io.File
+import uy.kohesive.injekt.injectLazy
 import java.util.Date
 import java.util.concurrent.TimeUnit
 
@@ -92,6 +95,8 @@ class ReaderPresenter(
      */
     private val isLoadingAdjacentChapterRelay = BehaviorRelay.create<Boolean>()
 
+    private val imageSaver: ImageSaver by injectLazy()
+
     /**
      * Chapter list for the active manga. It's retrieved lazily and should be accessed for the first
      * time in a background thread to avoid blocking the UI.
@@ -560,32 +565,6 @@ class ReaderPresenter(
             })
     }
 
-    /**
-     * Saves the image of this [page] in the given [directory] and returns the file location.
-     */
-    private fun saveImage(page: ReaderPage, directory: File, manga: Manga): File {
-        val stream = page.stream!!
-        val type = ImageUtil.findImageType(stream) ?: throw Exception("Not an image")
-
-        directory.mkdirs()
-
-        val chapter = page.chapter.chapter
-
-        // Build destination file.
-        val filenameSuffix = " - ${page.number}.${type.extension}"
-        val filename = DiskUtil.buildValidFilename(
-            "${manga.title} - ${chapter.name}".takeBytes(MAX_FILE_NAME_BYTES - filenameSuffix.byteSize())
-        ) + filenameSuffix
-
-        val destFile = File(directory, filename)
-        stream().use { input ->
-            destFile.outputStream().use { output ->
-                input.copyTo(output)
-            }
-        }
-        return destFile
-    }
-
     /**
      * Saves the image of this [page] on the pictures directory and notifies the UI of the result.
      * There's also a notification to allow sharing the image somewhere else or deleting it.
@@ -593,32 +572,42 @@ class ReaderPresenter(
     fun saveImage(page: ReaderPage) {
         if (page.status != Page.READY) return
         val manga = manga ?: return
-        val context = Injekt.get<Application>()
 
+        val context = Injekt.get<Application>()
         val notifier = SaveImageNotifier(context)
         notifier.onClear()
 
+        // Generate filename
+        val chapter = page.chapter.chapter
+        val filenameSuffix = " - ${page.number}"
+        val filename = DiskUtil.buildValidFilename(
+            "${manga.title} - ${chapter.name}".takeBytes(MAX_FILE_NAME_BYTES - filenameSuffix.byteSize())
+        ) + filenameSuffix
+
         // Pictures directory.
-        val baseDir = getPicturesDir(context).absolutePath
-        val destDir = if (preferences.folderPerManga()) {
-            File(baseDir + File.separator + DiskUtil.buildValidFilename(manga.title))
-        } else {
-            File(baseDir)
-        }
+        val relativePath = if (preferences.folderPerManga()) DiskUtil.buildValidFilename(manga.title) else ""
 
         // Copy file in background.
-        Observable.fromCallable { saveImage(page, destDir, manga) }
-            .doOnNext { file ->
-                DiskUtil.scanMedia(context, file)
-                notifier.onComplete(file)
+
+        try {
+            presenterScope.launchIO {
+                val uri = imageSaver.save(
+                    image = Image.Page(
+                        inputStream = page.stream!!,
+                        name = filename,
+                        location = Location.Pictures.create(relativePath)
+                    )
+                )
+                launchUI {
+                    DiskUtil.scanMedia(context, uri)
+                    notifier.onComplete(uri)
+                    view!!.onSaveImageResult(SaveImageResult.Success(uri))
+                }
             }
-            .doOnError { notifier.onError(it.message) }
-            .subscribeOn(Schedulers.io())
-            .observeOn(AndroidSchedulers.mainThread())
-            .subscribeFirst(
-                { view, file -> view.onSaveImageResult(SaveImageResult.Success(file)) },
-                { view, error -> view.onSaveImageResult(SaveImageResult.Error(error)) }
-            )
+        } catch (e: Throwable) {
+            notifier.onError(e.message)
+            view!!.onSaveImageResult(SaveImageResult.Error(e))
+        }
     }
 
     /**
@@ -631,18 +620,27 @@ class ReaderPresenter(
     fun shareImage(page: ReaderPage) {
         if (page.status != Page.READY) return
         val manga = manga ?: return
+
         val context = Injekt.get<Application>()
+        val destDir = context.cacheImageDir
 
-        val destDir = getTempShareDir(context)
-
-        Observable.fromCallable { destDir.deleteRecursively() } // Keep only the last shared file
-            .map { saveImage(page, destDir, manga) }
-            .subscribeOn(Schedulers.io())
-            .observeOn(AndroidSchedulers.mainThread())
-            .subscribeFirst(
-                { view, file -> view.onShareImageResult(file, page) },
-                { _, _ -> /* Empty */ }
-            )
+        try {
+            presenterScope.launchIO {
+                destDir.deleteRecursively()
+                val uri = imageSaver.save(
+                    image = Image.Page(
+                        inputStream = page.stream!!,
+                        name = manga.title,
+                        location = Location.Cache
+                    )
+                )
+                launchUI {
+                    view!!.onShareImageResult(uri, page)
+                }
+            }
+        } catch (e: Throwable) {
+            logcat(LogPriority.ERROR, e)
+        }
     }
 
     /**
@@ -691,7 +689,7 @@ class ReaderPresenter(
      * Results of the save image feature.
      */
     sealed class SaveImageResult {
-        class Success(val file: File) : SaveImageResult()
+        class Success(val uri: Uri) : SaveImageResult()
         class Error(val error: Throwable) : SaveImageResult()
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/reader/SaveImageNotifier.kt

@@ -3,6 +3,7 @@ package eu.kanade.tachiyomi.ui.reader
 import android.content.Context
 import android.graphics.Bitmap
 import android.graphics.drawable.BitmapDrawable
+import android.net.Uri
 import androidx.core.app.NotificationCompat
 import coil.imageLoader
 import coil.request.CachePolicy
@@ -13,7 +14,6 @@ import eu.kanade.tachiyomi.data.notification.NotificationReceiver
 import eu.kanade.tachiyomi.data.notification.Notifications
 import eu.kanade.tachiyomi.util.system.notificationBuilder
 import eu.kanade.tachiyomi.util.system.notificationManager
-import java.io.File
 
 /**
  * Class used to show BigPictureStyle notifications
@@ -36,14 +36,14 @@ class SaveImageNotifier(private val context: Context) {
      *
      * @param file image file containing downloaded page image.
      */
-    fun onComplete(file: File) {
+    fun onComplete(uri: Uri) {
         val request = ImageRequest.Builder(context)
-            .data(file)
+            .data(uri)
             .memoryCachePolicy(CachePolicy.DISABLED)
             .size(720, 1280)
             .target(
                 onSuccess = { result ->
-                    showCompleteNotification(file, (result as BitmapDrawable).bitmap)
+                    showCompleteNotification(uri, (result as BitmapDrawable).bitmap)
                 },
                 onError = {
                     onError(null)
@@ -53,7 +53,7 @@ class SaveImageNotifier(private val context: Context) {
         context.imageLoader.enqueue(request)
     }
 
-    private fun showCompleteNotification(file: File, image: Bitmap) {
+    private fun showCompleteNotification(uri: Uri, image: Bitmap) {
         with(notificationBuilder) {
             setContentTitle(context.getString(R.string.picture_saved))
             setSmallIcon(R.drawable.ic_photo_24dp)
@@ -64,18 +64,18 @@ class SaveImageNotifier(private val context: Context) {
             // Clear old actions if they exist
             clearActions()
 
-            setContentIntent(NotificationHandler.openImagePendingActivity(context, file))
+            setContentIntent(NotificationHandler.openImagePendingActivity(context, uri))
             // Share action
             addAction(
                 R.drawable.ic_share_24dp,
                 context.getString(R.string.action_share),
-                NotificationReceiver.shareImagePendingBroadcast(context, file.absolutePath, notificationId)
+                NotificationReceiver.shareImagePendingBroadcast(context, uri.path!!, notificationId)
             )
             // Delete action
             addAction(
                 R.drawable.ic_delete_24dp,
                 context.getString(R.string.action_delete),
-                NotificationReceiver.deleteImagePendingBroadcast(context, file.absolutePath, notificationId)
+                NotificationReceiver.deleteImagePendingBroadcast(context, uri.path!!, notificationId)
             )
 
             updateNotification()