remove Trashbin items after 30 days

app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt

@@ -120,6 +120,8 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
             config.wasRecycleBinPinned = true
             config.saveFolderGrouping(SHOW_ALL, GROUP_BY_DATE_TAKEN or GROUP_DESCENDING)
         }
+
+        checkRecycleBinItems()
     }
 
     override fun onStart() {
@@ -925,6 +927,20 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
         }, LAST_MEDIA_CHECK_PERIOD)
     }
 
+    private fun checkRecycleBinItems() {
+        if (config.useRecycleBin) {
+            Thread {
+                val mediumDao = galleryDB.MediumDao()
+                val deletedMedia = mediumDao.getDeletedMedia()
+                deletedMedia.forEach {
+                    if (System.currentTimeMillis() > it.deletedTS + MONTH_MILLISECONDS) {
+                        mediumDao.deleteMediumPath(it.path)
+                    }
+                }
+            }.start()
+        }
+    }
+
     override fun refreshItems() {
         getDirectories()
     }

app/src/main/kotlin/com/simplemobiletools/gallery/helpers/Constants.kt

@@ -1,5 +1,7 @@
 package com.simplemobiletools.gallery.helpers
 
+import com.simplemobiletools.commons.helpers.MONTH_SECONDS
+
 // shared preferences
 const val DIRECTORY_SORT_ORDER = "directory_sort_order"
 const val SORT_FOLDER_PREFIX = "sort_folder_"
@@ -76,6 +78,7 @@ const val MAX_COLUMN_COUNT = 20
 const val SHOW_TEMP_HIDDEN_DURATION = 300000L
 const val CLICK_MAX_DURATION = 150
 const val DRAG_THRESHOLD = 8
+const val MONTH_MILLISECONDS = MONTH_SECONDS * 1000L
 
 const val DIRECTORY = "directory"
 const val MEDIUM = "medium"