#283 fixed restoring to missing Download subdir

CHANGELOG.md

@@ -15,6 +15,10 @@ All notable changes to this project will be documented in this file.
 - Slideshow: option for no transition
 - Widget: tap action setting
 
+### Fixed
+
+- restoring to missing Download subdir
+
 ## <a id="v1.7.0"></a>[v1.7.0] - 2022-09-19
 
 ### Added

android/app/src/main/kotlin/deckers/thibault/aves/model/provider/MediaStoreImageProvider.kt

@@ -7,7 +7,6 @@ import android.content.*
 import android.media.MediaScannerConnection
 import android.net.Uri
 import android.os.Build
-import android.os.Environment
 import android.provider.MediaStore
 import android.util.Log
 import com.commonsware.cwac.document.DocumentFileCompat
@@ -391,10 +390,15 @@ class MediaStoreImageProvider : ImageProvider() {
                 effectiveTargetDir = targetDir
                 targetDirDocFile = StorageUtils.createDirectoryDocIfAbsent(activity, targetDir)
                 if (!File(targetDir).exists()) {
+                    val downloadDirPath = StorageUtils.getDownloadDirPath(activity, targetDir)
+                    val isDownloadSubdir = downloadDirPath != null && targetDir.startsWith(downloadDirPath)
+                    // download subdirectories can be created later by Media Store insertion
+                    if (!isDownloadSubdir) {
                         callback.onFailure(Exception("failed to create directory at path=$targetDir"))
                         return
                     }
                 }
+            }
 
             for (entry in entries) {
                 val mimeType = entry.mimeType
@@ -535,10 +539,17 @@ class MediaStoreImageProvider : ImageProvider() {
         targetNameWithoutExtension: String,
         write: (OutputStream) -> Unit,
     ): String {
-        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R && isDownloadDir(activity, targetDir)) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            val downloadDirPath = StorageUtils.getDownloadDirPath(activity, targetDir)
+            val isDownloadSubdir = downloadDirPath != null && targetDir.startsWith(downloadDirPath)
+            if (isDownloadSubdir) {
+                val volumePath = StorageUtils.getVolumePath(activity, targetDir)
+                val relativePath = targetDir.substring(volumePath?.length ?: 0)
+
                 val targetFileName = "$targetNameWithoutExtension${extensionFor(mimeType)}"
                 val values = ContentValues().apply {
                     put(MediaStore.MediaColumns.DISPLAY_NAME, targetFileName)
+                    put(MediaStore.MediaColumns.RELATIVE_PATH, relativePath)
                     put(MediaStore.MediaColumns.IS_PENDING, 1)
                 }
                 val resolver = activity.contentResolver
@@ -551,8 +562,10 @@ class MediaStoreImageProvider : ImageProvider() {
                     resolver.update(uri, values, null, null)
                 } ?: throw Exception("MediaStore failed for some reason")
 
-            File(targetDir, targetFileName).path
+                return File(targetDir, targetFileName).path
-        } else {
+            }
+        }
+
         targetDirDocFile ?: throw Exception("failed to get tree doc for directory at path=$targetDir")
 
         // the file created from a `TreeDocumentFile` is also a `TreeDocumentFile`
@@ -576,13 +589,7 @@ class MediaStoreImageProvider : ImageProvider() {
         // - a file with the same name already exists, some implementations give a suffix like ` (1)`, some *do not*
         // - the original extension does not match the extension added by the underlying provider
         val fileName = targetDocFile.name
-            targetDir + fileName
+        return targetDir + fileName
-        }
-    }
-
-    private fun isDownloadDir(context: Context, dirPath: String): Boolean {
-        val relativeDir = removeTrailingSeparator(PathSegments(context, dirPath).relativeDir ?: "")
-        return relativeDir == Environment.DIRECTORY_DOWNLOADS
     }
 
     override suspend fun renameMultiple(

android/app/src/main/kotlin/deckers/thibault/aves/utils/PermissionManager.kt

@@ -105,7 +105,11 @@ object PermissionManager {
                             val primaryDir = dirSegments.firstOrNull()
                             if (getRestrictedPrimaryDirectories().contains(primaryDir) && dirSegments.size > 1) {
                                 // request secondary directory (if any) for restricted primary directory
-                                dirSet.add(dirSegments.take(2).joinToString(File.separator))
+                                val dir = dirSegments.take(2).joinToString(File.separator)
+                                // only register directories that exist on storage, so they can be selected for access grant
+                                if (File(volumePath, dir).exists()) {
+                                    dirSet.add(dir)
+                                }
                             } else {
                                 primaryDir?.let { dirSet.add(it) }
                             }

android/app/src/main/kotlin/deckers/thibault/aves/utils/StorageUtils.kt

@@ -9,6 +9,7 @@ import android.content.pm.PackageManager
 import android.media.MediaMetadataRetriever
 import android.net.Uri
 import android.os.Build
+import android.os.Environment
 import android.os.storage.StorageManager
 import android.provider.DocumentsContract
 import android.provider.MediaStore
@@ -93,6 +94,10 @@ object StorageUtils {
         return getVolumePaths(context).firstOrNull { anyPath.startsWith(it) }
     }
 
+    fun getDownloadDirPath(context: Context, anyPath: String): String? {
+        return getVolumePath(context, anyPath)?.let { volumePath -> ensureTrailingSeparator(File(volumePath, Environment.DIRECTORY_DOWNLOADS).path) }
+    }
+
     private fun getPathStepIterator(context: Context, anyPath: String, root: String?): Iterator<String?>? {
         val rootLength = (root ?: getVolumePath(context, anyPath))?.length ?: return null