From 91c15ac89776750a2ea4a5f1f5d3aa19425efdb7 Mon Sep 17 00:00:00 2001
From: Tony Tam <engineer.tonytam@pm.me>
Date: Tue, 31 Mar 2020 11:29:33 -0700
Subject: [PATCH] put a date with the filename being exported (#3980)

---
 .../ImportExportPreferencesFragment.java      | 22 +++++++++++++------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/ImportExportPreferencesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/ImportExportPreferencesFragment.java
index 4f0feef47..c8abe0dc5 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/preferences/ImportExportPreferencesFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/preferences/ImportExportPreferencesFragment.java
@@ -35,6 +35,8 @@ import io.reactivex.schedulers.Schedulers;
 
 import java.io.File;
 import java.io.FileOutputStream;
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.List;
 
 public class ImportExportPreferencesFragment extends PreferenceFragmentCompat {
@@ -44,16 +46,16 @@ public class ImportExportPreferencesFragment extends PreferenceFragmentCompat {
     private static final String PREF_HTML_EXPORT = "prefHtmlExport";
     private static final String PREF_DATABASE_IMPORT = "prefDatabaseImport";
     private static final String PREF_DATABASE_EXPORT = "prefDatabaseExport";
-    private static final String DEFAULT_OPML_OUTPUT_NAME = "antennapod-feeds.opml";
+    private static final String DEFAULT_OPML_OUTPUT_NAME = "antennapod-feeds-%s.opml";
     private static final String CONTENT_TYPE_OPML = "text/x-opml";
-    private static final String DEFAULT_HTML_OUTPUT_NAME = "antennapod-feeds.html";
+    private static final String DEFAULT_HTML_OUTPUT_NAME = "antennapod-feeds-%s.html";
     private static final String CONTENT_TYPE_HTML = "text/html";
     private static final int REQUEST_CODE_CHOOSE_OPML_EXPORT_PATH = 1;
     private static final int REQUEST_CODE_CHOOSE_OPML_IMPORT_PATH = 2;
     private static final int REQUEST_CODE_CHOOSE_HTML_EXPORT_PATH = 3;
     private static final int REQUEST_CODE_RESTORE_DATABASE = 4;
     private static final int REQUEST_CODE_BACKUP_DATABASE = 5;
-    private static final String DATABASE_EXPORT_FILENAME = "AntennaPodBackup.db";
+    private static final String DATABASE_EXPORT_FILENAME = "AntennaPodBackup-%s.db";
     private Disposable disposable;
     private ProgressDialog progressDialog;
 
@@ -80,17 +82,23 @@ public class ImportExportPreferencesFragment extends PreferenceFragmentCompat {
         }
     }
 
+    private String dateStampFilename(String fname) {
+        return String.format(fname,
+                new SimpleDateFormat("yyyy-MM-dd")
+                       .format(new Date()));
+    }
+
     private void setupStorageScreen() {
         findPreference(PREF_OPML_EXPORT).setOnPreferenceClickListener(
                 preference -> {
-                    openExportPathPicker(CONTENT_TYPE_OPML, DEFAULT_OPML_OUTPUT_NAME,
+                    openExportPathPicker(CONTENT_TYPE_OPML, dateStampFilename(DEFAULT_OPML_OUTPUT_NAME),
                             REQUEST_CODE_CHOOSE_OPML_EXPORT_PATH, new OpmlWriter());
                     return true;
                 }
         );
         findPreference(PREF_HTML_EXPORT).setOnPreferenceClickListener(
                 preference -> {
-                    openExportPathPicker(CONTENT_TYPE_HTML, DEFAULT_HTML_OUTPUT_NAME,
+                    openExportPathPicker(CONTENT_TYPE_HTML, dateStampFilename(DEFAULT_HTML_OUTPUT_NAME),
                             REQUEST_CODE_CHOOSE_HTML_EXPORT_PATH, new HtmlWriter());
                     return true;
                 });
@@ -146,12 +154,12 @@ public class ImportExportPreferencesFragment extends PreferenceFragmentCompat {
             Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT)
                     .addCategory(Intent.CATEGORY_OPENABLE)
                     .setType("application/x-sqlite3")
-                    .putExtra(Intent.EXTRA_TITLE, DATABASE_EXPORT_FILENAME);
+                    .putExtra(Intent.EXTRA_TITLE, dateStampFilename(DATABASE_EXPORT_FILENAME));
 
             startActivityForResult(intent, REQUEST_CODE_BACKUP_DATABASE);
         } else {
             File sd = Environment.getExternalStorageDirectory();
-            File backupDB = new File(sd, DATABASE_EXPORT_FILENAME);
+            File backupDB = new File(sd, dateStampFilename(DATABASE_EXPORT_FILENAME));
             progressDialog.show();
             disposable = Completable.fromAction(() ->
                         DatabaseExporter.exportToStream(new FileOutputStream(backupDB), getContext()))