Add refresh download cache, and remove size check for force delete non library cover cache (#872)

* add option to force refresh download cache.
Removed size check on clear non library covers because what it does did not match what it said it did

* forgot }

app/src/main/java/eu/kanade/tachiyomi/data/cache/CoverCache.kt

@@ -94,15 +94,13 @@ class CoverCache(val context: Context) {
     }
 
     /**
-     * Clear out online covers until its under a certain size
+     * Clear out all online covers
      */
     fun deleteAllCachedCovers() {
         GlobalScope.launch(Dispatchers.IO) {
             val directory = onlineCoverDirectory
             val size = DiskUtil.getDirectorySize(directory)
-            if (size <= maxOnlineCacheSize) {
+
-                return@launch
-            }
             var deletedSize = 0L
             val files =
                 directory.listFiles()?.sortedBy { it.lastModified() }?.iterator() ?: return@launch

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt

@@ -118,6 +118,12 @@ class DownloadCache(
         }
     }
 
+    fun forceRenewCache() {
+        renew()
+        lastRenew = System.currentTimeMillis()
+    }
+
+
     /**
      * Renews the downloads cache.
      */

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadManager.kt

@@ -372,6 +372,11 @@ class DownloadManager(val context: Context) {
         }
     }
 
+    // forceRefresh the download cache
+    fun refreshCache() {
+        cache.forceRenewCache()
+    }
+
     fun addListener(listener: DownloadQueue.DownloadListener) = queue.addListener(listener)
     fun removeListener(listener: DownloadQueue.DownloadListener) = queue.removeListener(listener)
 }

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsAdvancedController.kt

@@ -52,6 +52,8 @@ class SettingsAdvancedController : SettingsController() {
 
     private val coverCache: CoverCache by injectLazy()
 
+    private val downloadManager: DownloadManager by injectLazy()
+
     @SuppressLint("BatteryLife")
     override fun setupPreferenceScreen(screen: PreferenceScreen) = screen.apply {
         titleRes = R.string.advanced
@@ -103,6 +105,12 @@ class SettingsAdvancedController : SettingsController() {
                 onClick { clearChapterCache() }
             }
 
+            preference {
+                titleRes = R.string.force_download_cache_refresh
+                summaryRes = R.string.force_download_cache_refresh_summary
+                onClick { downloadManager.refreshCache() }
+            }
+
             preference {
                 key = "clean_cached_covers"
                 titleRes = R.string.clean_up_cached_covers
@@ -220,7 +228,6 @@ class SettingsAdvancedController : SettingsController() {
         job = GlobalScope.launch(Dispatchers.IO, CoroutineStart.DEFAULT) {
             val mangaList = db.getMangas().executeAsBlocking()
             val sourceManager: SourceManager = Injekt.get()
-            val downloadManager: DownloadManager = Injekt.get()
             val downloadProvider = DownloadProvider(activity!!)
             var foldersCleared = 0
             val sources = sourceManager.getOnlineSources()

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

@@ -668,6 +668,9 @@
 
     <!-- Advanced section -->
     <string name="clear_chapter_cache">Clear chapter cache</string>
+    <string name="force_download_cache_refresh">Refresh the download cache</string>
+    <string name="force_download_cache_refresh_summary">This will force the download cache to recalculate.  Useful if you copied downloads outside of this app and want the app to pick them up</string>
+
     <string name="data_management">Data Management</string>
     <string name="crash_logs">Crash logs</string>
     <string name="dump_crash_logs">Dump crash logs</string>