Fix: copy issue

build.gradle

@@ -11,7 +11,7 @@ buildscript {
     dependencies {
         classpath "com.android.tools.build:gradle:9.0.0"
 
-        classpath "org.jetbrains.dokka:dokka-gradle-plugin:2.1.0"
+        classpath "org.jetbrains.dokka:dokka-gradle-plugin:2.2.0"
         classpath "com.vanniktech:gradle-maven-publish-plugin:0.36.0"
     }
 }
@@ -23,7 +23,7 @@ allprojects {
     }
 
     plugins.withId("com.vanniktech.maven.publish.base") {
-        version = "1.5"
+        version = "1.6"
         group = "com.lazygeniouz"
 
         mavenPublishing {

dfc/src/main/java/com/lazygeniouz/dfc/file/DocumentFileCompat.kt

@@ -105,10 +105,9 @@ abstract class DocumentFileCompat(
     /**
      * Rename a Document File / Folder.
      *
-     * Will throw [UnsupportedOperationException] when called on a [SingleDocumentFileCompat].
+     * Succeeds when the underlying Uri carries `FLAG_SUPPORTS_RENAME`.
      *
      * @return True if the rename was successful, False otherwise.
-     * @throws UnsupportedOperationException
      */
     abstract fun renameTo(name: String): Boolean
 

dfc/src/main/java/com/lazygeniouz/dfc/file/internals/SingleDocumentFileCompat.kt

@@ -78,12 +78,16 @@ internal class SingleDocumentFileCompat(
     }
 
     /**
-     * [SingleDocumentFileCompat] has limited access and permissions to the [uri].
+     * Rename succeeds when the underlying Uri carries `FLAG_SUPPORTS_RENAME`;
+     * ideally true for documents obtained from a tree grant via [DocumentFileCompat.listFiles].
      *
-     * @throws UnsupportedOperationException
+     * @return True if the rename was successful, False otherwise.
      */
     override fun renameTo(name: String): Boolean {
-        throw UnsupportedOperationException()
+        val newUri = fileController.renameTo(name)
+        val success = newUri != null
+        if (success) uri = newUri
+        return success
     }
 
     // Copies current file to the destination uri.

dfc/src/main/java/com/lazygeniouz/dfc/resolver/ResolverCompat.kt

@@ -7,6 +7,7 @@ import android.net.Uri
 import android.provider.DocumentsContract
 import android.provider.DocumentsContract.Document
 import com.lazygeniouz.dfc.file.DocumentFileCompat
+import com.lazygeniouz.dfc.file.internals.SingleDocumentFileCompat
 import com.lazygeniouz.dfc.file.internals.TreeDocumentFileCompat
 import com.lazygeniouz.dfc.logger.ErrorLogger
 
@@ -125,10 +126,11 @@ internal object ResolverCompat {
         val childrenUri = createChildrenUri(uri)
         val listOfDocuments = arrayListOf<DocumentFileCompat>()
 
-        // ensure `Document.COLUMN_DOCUMENT_ID` is always included
-        val finalProjection = if (Document.COLUMN_DOCUMENT_ID !in projection) {
-            arrayOf(Document.COLUMN_DOCUMENT_ID, *projection)
-        } else projection
+        val finalProjection = arrayOf(
+            Document.COLUMN_DOCUMENT_ID, /* identifier */
+            Document.COLUMN_MIME_TYPE, /* for supporting rename via `isDirectory` check */
+            *projection
+        ).distinct().toTypedArray()
 
         val cursor = getCursor(context, childrenUri, finalProjection) ?: return emptyList()
 
@@ -168,14 +170,23 @@ internal object ResolverCompat {
                  */
                 val documentFlags = getLongOrDefault(cursor, flagsIndex, 0L).toInt()
 
-                TreeDocumentFileCompat(
-                    context, documentUri, documentName,
-                    documentSize, lastModifiedTime,
-                    documentMimeType, documentFlags
-                ).also { childFile ->
-                    childFile.parentFile = file
-                    listOfDocuments.add(childFile)
-                }
+                /* return correct document type */
+                val childFile: DocumentFileCompat =
+                    if (documentMimeType == Document.MIME_TYPE_DIR) {
+                        TreeDocumentFileCompat(
+                            context, documentUri, documentName,
+                            documentSize, lastModifiedTime,
+                            documentMimeType, documentFlags
+                        )
+                    } else {
+                        SingleDocumentFileCompat(
+                            context, documentUri, documentName,
+                            documentSize, lastModifiedTime,
+                            documentMimeType, documentFlags
+                        )
+                    }
+                childFile.parentFile = file
+                listOfDocuments.add(childFile)
             }
         }