Merge pull request #7344 from hayaksi1/fix/6371-save-file-name-conflicts

Keep saving files to Downloads once 32 files share the same name

tests/konsist/src/test/kotlin/io/element/android/tests/konsist/KonsistClassNameTest.kt

@@ -103,6 +103,7 @@ class KonsistClassNameTest {
                 "FakeImageLoader",
                 "FakeKeyStore",
                 "FakeListenableFuture",
+                "FakeMediaStoreContentProvider",
                 "FakeParentNode",
             )
             .assertTrue {

tests/testutils/src/main/kotlin/io/element/android/tests/testutils/fake/FakeMediaStoreContentProvider.kt

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2026 Element Creations Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.tests.testutils.fake
+
+import android.content.ContentProvider
+import android.content.ContentValues
+import android.content.pm.ProviderInfo
+import android.database.Cursor
+import android.net.Uri
+import android.os.ParcelFileDescriptor
+import android.provider.MediaStore
+import androidx.test.core.app.ApplicationProvider
+import org.robolectric.shadows.ShadowContentResolver
+import java.io.File
+
+/**
+ * Stands in for the MediaStore provider: it records the display names an insert is attempted with,
+ * writes what is copied into it to a temporary directory, and can make any display name collide the
+ * way MediaStore does once a directory already holds 32 files with the same name.
+ */
+class FakeMediaStoreContentProvider : ContentProvider() {
+    private val directory: File = File.createTempFile("fake-media-store", null).apply {
+        delete()
+        mkdir()
+    }
+
+    val insertedDisplayNames = mutableListOf<String>()
+
+    var conflictingDisplayNames: Set<String> = emptySet()
+
+    /** When true, an insert reports that it created nothing, the way a rejected insert does. */
+    var returnsNoUriOnInsert: Boolean = false
+
+    fun savedFileNames(): List<String> = directory.list().orEmpty().toList()
+
+    fun savedContent(displayName: String): String = File(directory, displayName).readText()
+
+    override fun onCreate() = true
+
+    override fun insert(uri: Uri, values: ContentValues?): Uri? {
+        val displayName = values?.getAsString(MediaStore.MediaColumns.DISPLAY_NAME).orEmpty()
+        insertedDisplayNames += displayName
+        check(displayName !in conflictingDisplayNames) { "Failed to build unique file" }
+        return if (returnsNoUriOnInsert) null else uri.buildUpon().appendPath(displayName).build()
+    }
+
+    override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor {
+        val file = File(directory, uri.lastPathSegment.orEmpty())
+        return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_CREATE or ParcelFileDescriptor.MODE_READ_WRITE)
+    }
+
+    override fun query(uri: Uri, projection: Array<out String>?, selection: String?, selectionArgs: Array<out String>?, sortOrder: String?): Cursor? = null
+
+    override fun getType(uri: Uri): String? = null
+
+    override fun update(uri: Uri, values: ContentValues?, selection: String?, selectionArgs: Array<out String>?) = 0
+
+    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<out String>?) = 0
+}
+
+fun registerFakeMediaStoreContentProvider(): FakeMediaStoreContentProvider {
+    return FakeMediaStoreContentProvider().apply {
+        attachInfo(
+            ApplicationProvider.getApplicationContext(),
+            ProviderInfo().apply { authority = MediaStore.AUTHORITY }
+        )
+        ShadowContentResolver.registerProviderInternal(MediaStore.AUTHORITY, this)
+    }
+}