Search: introduce weighted reordering (#272)

* Database: backend for weights & timestamps

- Migration 21->22
- SearchableLaunchTimestampEntity.kt
- `weight`-column in SavedSearchableEntity
- Queries for sorting by and adjusting weight
- Queries for sorting by recent use

* move weightfactor access to favoritesRepository

* reorder calls in SearchVM

* no more datahoarding

* add settings screen for ordering

* ui fix, animations

* move ordering settings out of own screen

* remove unused localization

* weight factors

* larger factor for WeightFactor.High

* cleanup

* sort favorites by weight

* icons for favorite screen

* I hate coming up with descriptive strings

* add default weight factor to settings migration

* Add default values for search result ordering preferences

* Favorites settings: change order of preferences

* Change strings

* Replace favorites variability slider with list preference

* migration initial weight

* Change labels

* Include searchable weight column in backup

---------

Co-authored-by: MM20 <15646950+MM2-0@users.noreply.github.com>

core/preferences/src/main/java/de/mm20/launcher2/preferences/Defaults.kt

@@ -183,6 +183,11 @@ fun createFactorySettings(context: Context): Settings {
                 .setSwipeLeft(Settings.GestureSettings.GestureAction.None)
                 .setSwipeRight(Settings.GestureSettings.GestureAction.None)
         )
+        .setResultOrdering(
+            Settings.SearchResultOrderingSettings.newBuilder()
+                .setOrdering(Settings.SearchResultOrderingSettings.Ordering.Weighted)
+                .setWeightFactor(Settings.SearchResultOrderingSettings.WeightFactor.Default)
+        )
         .build()
 }
 

core/preferences/src/main/java/de/mm20/launcher2/preferences/migrations/Migration_12_13.kt

@@ -1,6 +1,7 @@
 package de.mm20.launcher2.preferences.migrations
 
 import de.mm20.launcher2.preferences.Settings
+import de.mm20.launcher2.preferences.Settings.SearchResultOrderingSettings.WeightFactor
 
 class Migration_12_13: VersionedMigration(12, 13) {
     override suspend fun applyMigrations(builder: Settings.Builder): Settings.Builder {
@@ -10,5 +11,10 @@ class Migration_12_13: VersionedMigration(12, 13) {
                     .setDatePart(true)
                     .build()
             )
+            .setResultOrdering(
+                builder.resultOrdering.toBuilder()
+                    .setWeightFactor(WeightFactor.Default)
+                    .build()
+            )
     }
 }

core/preferences/src/main/proto/settings.proto

@@ -223,11 +223,6 @@ message Settings {
     }
     SearchBarColors color = 3;
     bool launch_on_enter = 4;
-    enum SearchResultOrdering {
-      Alphabetic = 0;
-      Relevance = 1;
-    }
-    SearchResultOrdering search_result_ordering = 5;
   }
   SearchBarSettings search_bar = 20;
 
@@ -332,4 +327,20 @@ message Settings {
     string long_press_app = 10;
   }
   GestureSettings gestures = 28;
+
+  message SearchResultOrderingSettings {
+    enum Ordering {
+      Alphabetic = 0;
+      LaunchCount = 1;
+      Weighted = 2;
+    }
+    Ordering ordering = 1;
+    enum WeightFactor {
+      Low = 0;
+      Default = 1;
+      High = 2;
+    }
+    WeightFactor weight_factor = 2;
+  }
+  SearchResultOrderingSettings result_ordering = 29;
 }