Add ability to delete saved filters in batch

Author: nonproto

app/src/main/java/eu/kanade/tachiyomi/data/database/queries/BrowseFilterQueries.kt

@@ -22,6 +22,14 @@ interface BrowseFilterQueries : DbProvider {
         )
         .prepare()
 
+    fun deleteAllBrowseFilters() = db.delete()
+        .byQuery(
+            DeleteQuery.builder()
+                .table(BrowseFilterTable.TABLE)
+                .build(),
+        )
+        .prepare()
+
     fun getBrowseFilters() = db.get()
         .listOfObjects(BrowseFilterImpl::class.java)
         .withQuery(

app/src/main/java/eu/kanade/tachiyomi/source/online/utils/MdLang.kt

@@ -42,7 +42,7 @@ enum class MdLang(val lang: String, val prettyPrint: String, val iconResId: Int)
     PORTUGUESE_BR("pt-br", "Portuguese (Br)", R.drawable.ic_flag_br),
     ROMANIAN("ro", "Romanian", R.drawable.ic_flag_ro),
     RUSSIAN("ru", "Russian", R.drawable.ic_flag_ru),
-    SERBIAN("sr", "Serbo-Croatian", R.drawable.ic_flag_sr),
+    SERBIAN("sr", "Serbian", R.drawable.ic_flag_sr),
     SLOVAK("sk", "Slovak", R.drawable.ic_flag_sk),
     SPANISH_ES("es", "Spanish (Es)", R.drawable.ic_flag_es),
     SPANISH_LATAM("es-la", "Spanish (LATAM)", R.drawable.ic_flag_mx),

app/src/main/java/eu/kanade/tachiyomi/source/online/utils/MdUtil.kt

@@ -61,7 +61,8 @@ class MdUtil {
         }
 
         fun getLangsToShow(preferences: PreferencesHelper) =
-            preferences.langsToShow().get().split(",")
+            //this prevents langauges that don't exist anymore from causing a parse exception
+            preferences.langsToShow().get().split(",").filter { MdLang.values().firstOrNull { mdLang -> it == mdLang.lang } != null }
 
         fun getTitle(
             titleMap: Map<String, String?>,

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

@@ -126,6 +126,22 @@ class SettingsSiteController :
             defaultValue = 0
         }
 
+        preference {
+            titleRes = R.string.delete_saved_filters
+            summaryRes = R.string.delete_saved_filters_description
+            onClick {
+                activity!!.materialAlertDialog()
+                    .setTitle(R.string.delete_saved_filters)
+                    .setNegativeButton(android.R.string.cancel, null)
+                    .setPositiveButton(R.string.delete) { dialog, t ->
+                        viewScope.launch {
+                            db.deleteAllBrowseFilters().executeAsBlocking()
+                        }
+                    }
+                    .show()
+            }
+        }
+
         preference {
 
             titleRes = R.string.currently_blocked_scanlators

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

@@ -1131,6 +1131,9 @@
     <string name="currently_blocked_scanlators_description">These are blocks in the app only, as the app does not use or sync with the MangaDex website setting.</string>
     <string name="unblock_scanlator">Unblock scanlator</string>
     <string name="no_blocked_scanlator">No blocked scanlators</string>
+    <string name="delete_saved_filters">Delete saved filters</string>
+    <string name="delete_saved_filters_description">Use this if you get a parse exception clicking the search button in browse, or want to delete all your saved search filters.</string>
+
     <string name="menu">menu</string>
     <string name="more">More</string>
     <string name="move_to_bottom">Move to bottom</string>