Add system languages as subtypes when blank

java/src/org/futo/inputmethod/latin/LatinIME.kt

@@ -221,6 +221,8 @@ class LatinIME : InputMethodService(), LifecycleOwner, ViewModelStoreOwner, Save
     override fun onCreate() {
         super.onCreate()
 
+        Subtypes.addDefaultSubtypesIfNecessary(this)
+
         languageModelFacilitator = LanguageModelFacilitator(
             this,
             latinIMELegacy.mInputLogic,

java/src/org/futo/inputmethod/latin/Subtypes.kt

@@ -39,6 +39,7 @@ import org.futo.inputmethod.latin.uix.setSettingBlocking
 import org.futo.inputmethod.latin.uix.settings.NavigationItem
 import org.futo.inputmethod.latin.uix.settings.NavigationItemStyle
 import org.futo.inputmethod.latin.uix.settings.SettingsActivity
+import org.futo.inputmethod.latin.uix.settings.pages.LocaleLayoutMap
 import org.futo.inputmethod.latin.uix.settings.useDataStoreValueBlocking
 import org.futo.inputmethod.latin.uix.theme.Typography
 import org.futo.inputmethod.latin.utils.SubtypeLocaleUtils
@@ -55,6 +56,36 @@ val ActiveSubtype = SettingsKey(
 )
 
 object Subtypes {
+    fun addDefaultSubtypesIfNecessary(context: Context) {
+        val currentSubtypes = context.getSettingBlocking(SubtypesSetting)
+        if(currentSubtypes.isNotEmpty()) return
+
+        val locales = context.resources.configuration.locales
+        if(locales.size() == 0) return
+
+        for(i in 0 until locales.size()) {
+            val locale = locales.get(i)
+            val layout = findClosestLocaleLayouts(locale).firstOrNull() ?: continue
+
+            addLanguage(context, locale, layout)
+        }
+
+        context.setSettingBlocking(ActiveSubtype.key, context.getSettingBlocking(SubtypesSetting).first())
+    }
+
+    fun findClosestLocaleLayouts(locale: Locale): List<String> {
+        val supportedLocales = LocaleLayoutMap.toList().associate {
+            getLocale(it.first) to it.second
+        }
+
+        val perfectMatch = supportedLocales.keys.find { it.language == locale.language && it.country == locale.country }
+        val languageMatch = supportedLocales.keys.find { it.language == locale.language }
+
+        val match = perfectMatch ?: languageMatch
+
+        return match?.let { supportedLocales[it] } ?: listOf()
+    }
+
     fun convertToSubtype(string: String): InputMethodSubtype {
         val splits = string.split(":")
         val locale = splits[0]

java/src/org/futo/inputmethod/latin/uix/settings/pages/AddLanguage.kt

@@ -23,7 +23,7 @@ import org.futo.inputmethod.latin.uix.settings.SettingItem
 
 val QwertyVariants = listOf("qwerty", "qwertz", "dvorak", "azerty", "colemak", "bepo", "pcqwerty")
 
-val locales = mapOf(
+val LocaleLayoutMap = mapOf(
     "af"     to   listOf("qwerty"),
     "ar"     to   listOf("arabic"),
     "az_AZ"  to   listOf("qwerty"),
@@ -114,7 +114,7 @@ fun AddLanguageScreen(navController: NavHostController = rememberNavController()
     val selectedLocale: MutableState<String> = remember { mutableStateOf(context.resources.configuration.locale.toString()) }
     val selectedLayout: MutableState<String> = remember { mutableStateOf("qwerty") }
 
-    val keys = remember { locales.keys.toList() }
+    val keys = remember { LocaleLayoutMap.keys.toList() }
     ScrollableList {
         ScreenTitle("Add Language", showBack = true, navController)
 
@@ -125,7 +125,7 @@ fun AddLanguageScreen(navController: NavHostController = rememberNavController()
                 selectedLocale.value,
                 {
                     selectedLocale.value = it
-                    selectedLayout.value = locales[it]!!.first()
+                    selectedLayout.value = LocaleLayoutMap[it]!!.first()
                 },
                 {
                     Subtypes.getNameForLocale(it)
@@ -137,7 +137,7 @@ fun AddLanguageScreen(navController: NavHostController = rememberNavController()
         SettingItem(title = "Layout") {
             DropDownPicker(
                 "",
-                locales[selectedLocale.value] ?: listOf(),
+                LocaleLayoutMap[selectedLocale.value] ?: listOf(),
                 selectedLayout.value,
                 { selectedLayout.value = it },
                 { Subtypes.getLayoutName(context, it) },