Show last cleanup time

app/src/main/java/eu/faircode/email/FragmentOptions.java

@@ -115,6 +115,7 @@ public class FragmentOptions extends FragmentBase implements SharedPreferences.O
     private SwitchCompat swEnglish;
     private SwitchCompat swUpdates;
     private SwitchCompat swDebug;
+    private TextView tvLastCleanup;
 
     private Group grpSearchLocal;
     private Group grpNotification;
@@ -201,6 +202,7 @@ public class FragmentOptions extends FragmentBase implements SharedPreferences.O
         swEnglish = view.findViewById(R.id.swEnglish);
         swUpdates = view.findViewById(R.id.swUpdates);
         swDebug = view.findViewById(R.id.swDebug);
+        tvLastCleanup = view.findViewById(R.id.tvLastCleanup);
 
         grpSearchLocal = view.findViewById(R.id.grpSearchLocal);
         grpNotification = view.findViewById(R.id.grpNotification);
@@ -596,6 +598,12 @@ public class FragmentOptions extends FragmentBase implements SharedPreferences.O
             }
         });
 
+        long last_cleanup = prefs.getLong("last_cleanup", -1);
+        java.text.DateFormat df = SimpleDateFormat.getDateTimeInstance();
+        tvLastCleanup.setText(
+                getString(R.string.title_advanced_last_cleanup,
+                        last_cleanup < 0 ? "-" : df.format(last_cleanup)));
+
         PreferenceManager.getDefaultSharedPreferences(getContext()).registerOnSharedPreferenceChangeListener(this);
 
         return view;

app/src/main/java/eu/faircode/email/WorkerCleanup.java

@@ -1,8 +1,10 @@
 package eu.faircode.email;
 
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.net.Uri;
 import android.os.Build;
+import android.preference.PreferenceManager;
 
 import androidx.annotation.NonNull;
 import androidx.work.Constraints;
@@ -156,6 +158,10 @@ public class WorkerCleanup extends Worker {
             Log.e(ex);
         } finally {
             Log.i("End cleanup");
+            if (!manual) {
+                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+                prefs.edit().putLong("last_cleanup", new Date().getTime()).apply();
+            }
         }
     }
 

app/src/main/res/layout/fragment_options.xml

@@ -964,6 +964,19 @@
                 app:layout_constraintTop_toBottomOf="@id/swUpdates"
                 app:switchPadding="12dp" />
 
+            <TextView
+                android:id="@+id/tvLastCleanup"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="12dp"
+                android:layout_marginTop="12dp"
+                android:layout_marginEnd="60dp"
+                android:text="@string/title_advanced_last_cleanup"
+                android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@id/swDebug" />
+
             <androidx.constraintlayout.widget.Group
                 android:id="@+id/grpSearchLocal"
                 android:layout_width="0dp"

app/src/main/res/values/strings.xml

@@ -203,6 +203,7 @@
     <string name="title_advanced_paranoid">Extra privacy features</string>
     <string name="title_advanced_updates">Check for updates</string>
     <string name="title_advanced_debug">Debug mode</string>
+    <string name="title_advanced_last_cleanup">Last cleanup: %1$s</string>
 
     <string name="title_advanced_enabled_hint">Globally disable or enable receiving and sending of messages</string>
     <string name="title_advanced_schedule_hint">Tap on a time to set a time</string>