From b840d481a851570432fa2710e6e109440ababeb0 Mon Sep 17 00:00:00 2001
From: ugurtafrali <tafraliugur@gmail.com>
Date: Tue, 14 Apr 2026 00:26:11 +0300
Subject: [PATCH] Add timestamp to export filename

---
 .../java/protect/card_locker/ImportExportActivity.kt   | 10 +++++++++-
 .../protect/card_locker/ImportExportActivityTest.kt    |  7 +++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/protect/card_locker/ImportExportActivity.kt b/app/src/main/java/protect/card_locker/ImportExportActivity.kt
index aa8a2aa13..b0efdb08e 100644
--- a/app/src/main/java/protect/card_locker/ImportExportActivity.kt
+++ b/app/src/main/java/protect/card_locker/ImportExportActivity.kt
@@ -27,6 +27,9 @@ import protect.card_locker.importexport.ImportExportResultType
 import java.io.IOException
 import java.io.InputStream
 import java.io.OutputStream
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
 
 class ImportExportActivity : CatimaAppCompatActivity() {
     private lateinit var binding: ImportExportActivityBinding
@@ -45,6 +48,11 @@ class ImportExportActivity : CatimaAppCompatActivity() {
 
     companion object {
         private const val TAG = "Catima"
+
+        internal fun getExportFilename(): String {
+            val sdf = SimpleDateFormat("yyyyMMdd", Locale.US)
+            return "catima_${sdf.format(Date())}.zip"
+        }
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -107,7 +115,7 @@ class ImportExportActivity : CatimaAppCompatActivity() {
         val intentCreateDocumentAction = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
             addCategory(Intent.CATEGORY_OPENABLE)
             type = "application/zip"
-            putExtra(Intent.EXTRA_TITLE, "catima.zip")
+            putExtra(Intent.EXTRA_TITLE, getExportFilename())
         }
 
         val exportButton: Button = binding.exportButton
diff --git a/app/src/test/java/protect/card_locker/ImportExportActivityTest.kt b/app/src/test/java/protect/card_locker/ImportExportActivityTest.kt
index ecd5cc240..c5110efe8 100644
--- a/app/src/test/java/protect/card_locker/ImportExportActivityTest.kt
+++ b/app/src/test/java/protect/card_locker/ImportExportActivityTest.kt
@@ -7,6 +7,7 @@ import android.content.pm.ApplicationInfo
 import android.content.pm.ResolveInfo
 import android.view.View
 import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.robolectric.Robolectric
@@ -61,6 +62,12 @@ class ImportExportActivityTest {
         assertEquals(state, buttonView.visibility)
     }
 
+    @Test
+    fun testExportFilenameHasTimestamp() {
+        val filename = ImportExportActivity.getExportFilename()
+        assertTrue(filename.matches(Regex("catima_\\d{8}\\.zip")))
+    }
+
     @Test
     fun testAllOptionsAvailable() {
         registerIntentHandler(Intent.ACTION_PICK)