From eafa87b43a151da05e6360938488dc2efd2cb3f6 Mon Sep 17 00:00:00 2001
From: Zsombor Gegesy <gzsombor@gmail.com>
Date: Thu, 29 Aug 2024 00:14:37 +0200
Subject: [PATCH] Fix the language selector for newer Androids

---
 .../VideoPlayerPreferenceFragment.java        | 84 +++++++++++--------
 .../main/res/values/strings_preferences.xml   |  2 +-
 2 files changed, 50 insertions(+), 36 deletions(-)

diff --git a/app/src/main/java/free/rm/skytube/gui/fragments/preferences/VideoPlayerPreferenceFragment.java b/app/src/main/java/free/rm/skytube/gui/fragments/preferences/VideoPlayerPreferenceFragment.java
index 67dff8298..b51518ca5 100644
--- a/app/src/main/java/free/rm/skytube/gui/fragments/preferences/VideoPlayerPreferenceFragment.java
+++ b/app/src/main/java/free/rm/skytube/gui/fragments/preferences/VideoPlayerPreferenceFragment.java
@@ -23,6 +23,7 @@
 
 import androidx.appcompat.app.AppCompatDelegate;
 import androidx.core.os.LocaleListCompat;
+import androidx.core.util.Pair;
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceFragmentCompat;
@@ -35,8 +36,11 @@
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Comparator;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Locale;
+import java.util.Set;
 import java.util.stream.Collectors;
 
 import free.rm.skytube.BuildConfig;
@@ -74,41 +78,51 @@ public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
 		configureLanguageSelector();
 	}
 
-	private List<String> getLanguages() {
-		List<String> result = new ArrayList<>();
-		try {
-			XmlResourceParser xpp = getResources().getXml(R.xml._generated_res_locale_config);
-			while (xpp.getEventType() != XmlPullParser.END_DOCUMENT) {
-				if (xpp.getEventType() == XmlPullParser.START_TAG) {
-					if ("locale".equals(xpp.getName()) && xpp.getAttributeCount() > 0 && "name".equals(xpp.getAttributeName(0))) {
-						result.add(xpp.getAttributeValue(0));
-					}
-				}
-				xpp.next();
-			}
-			Logger.i(this, "Language list:"+result);
-		} catch(XmlPullParserException|IOException e) {
-			Logger.e(this, "Unable to parse locale config: "+e.getMessage(), e);
-		}
-		return result;
-	}
-
-	private void configureLanguageSelector() {
-		ListPreference languageSelector = findPreference(getString(R.string.pref_key_app_language));
-
-		List<String> languages = getLanguages();
-		LocaleListCompat localeList = LocaleListCompat.forLanguageTags(Joiner.on(",").join(languages));
-		int size = localeList.size();
-		String[] localeCodes = new String[size];
-		String[] localeNames = new String[size];
-		for (int i = 0;i<size;i++) {
-			Locale locale = localeList.get(i);
-			localeNames[i] = locale.getDisplayName();
-			localeCodes[i] = locale.getLanguage();
-		}
-		languageSelector.setEntries(localeNames);
-		languageSelector.setEntryValues(localeCodes);
-	}
+    private List<String> getLanguages() {
+        List<String> result = new ArrayList<>();
+        try {
+            XmlResourceParser xpp = getResources().getXml(R.xml._generated_res_locale_config);
+            while (xpp.getEventType() != XmlPullParser.END_DOCUMENT) {
+                if (xpp.getEventType() == XmlPullParser.START_TAG) {
+                    if ("locale".equals(xpp.getName()) && xpp.getAttributeCount() > 0 && "name".equals(xpp.getAttributeName(0))) {
+                        result.add(xpp.getAttributeValue(0));
+                    }
+                }
+                xpp.next();
+            }
+            Logger.i(this, "Language list:"+result);
+        } catch(XmlPullParserException|IOException e) {
+            Logger.e(this, "Unable to parse locale config: "+e.getMessage(), e);
+        }
+        return result;
+    }
+
+    private static Comparator<Pair<String, String>> ENGLISH_COMPARATOR = Comparator.comparing(pair -> "en".equals(pair.first) ? 0 : 1);
+    private static Comparator<Pair<String, String>> COMPARATOR = ENGLISH_COMPARATOR.thenComparing(pair -> pair.second);
+
+    private void configureLanguageSelector() {
+        ListPreference languageSelector = findPreference(getString(R.string.pref_key_app_language));
+
+        List<String> languages = getLanguages();
+        LocaleListCompat localeListCompat = AppCompatDelegate.getApplicationLocales();
+        Locale defaultLocale = localeListCompat.isEmpty() ? Locale.getDefault() : localeListCompat.get(0);
+        Logger.i(this, "Default locale: " + defaultLocale + " -> language:" + defaultLocale.getLanguage());
+        List<Pair<String, String>> languageWithCodes = languages.stream()
+                .map(code -> Pair.create(code, new Locale(code).getDisplayLanguage(defaultLocale)))
+                .sorted(COMPARATOR)
+                .collect(Collectors.toList());
+        int size = languageWithCodes.size();
+        String[] localeCodes = new String[size];
+        String[] localeNames = new String[size];
+        for (int i = 0;i<size;i++) {
+            Pair<String, String> locale = languageWithCodes.get(i);
+            localeNames[i] = locale.second;
+            localeCodes[i] = locale.first;
+        }
+        languageSelector.setEntries(localeNames);
+        languageSelector.setEntryValues(localeCodes);
+        languageSelector.setValue(defaultLocale.getLanguage());
+    }
 
 	private void configureCountrySelector() {
 		ListPreference countrySelector = findPreference(getString(R.string.pref_key_default_content_country));
diff --git a/app/src/main/res/values/strings_preferences.xml b/app/src/main/res/values/strings_preferences.xml
index 17e4ab357..b8ceac7a7 100644
--- a/app/src/main/res/values/strings_preferences.xml
+++ b/app/src/main/res/values/strings_preferences.xml
@@ -749,7 +749,7 @@
 
     <string name="pref_key_app_language" translatable="false">pref_key_app_language</string>
     <string name="pref_title_app_language">Application Language</string>
-    <string name="pref_summary_app_language">The language used for all the labels in the application</string>
+    <string name="pref_summary_app_language">The language used for all the labels in the application: %s</string>
 
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