语言逻辑处理

我的项目里有5个国家的语言，如果用户在app里手动切换了国家语言，只要不卸载app，用户在手机设置切换语言，app的语言不要变；如果app被删
  除，重新安装，app语言要跟随手机设置的语言（如果语言对不上，app就显示英语）
  用户没有在app里手动设置过国家语言，用户在手机设置界面切换国家，app要跟随手机设置的语言（如果语言对不上，app就显示英语）。

CustomKeyboard/Manager/KBKeyboardLayoutResolver.m

@@ -6,6 +6,7 @@
 #import "KBKeyboardLayoutResolver.h"
 #import "KBInputProfileManager.h"
 #import "KBConfig.h"
+#import "KBLocalizationManager.h"
 
 @implementation KBKeyboardLayoutResolver
 
@@ -18,6 +19,30 @@
     return instance;
 }
 
+/// 未手动选择键盘输入配置时，根据当前 App 语言推导默认键盘语言码（对应 kb_input_profiles.json 的 code）。
+- (NSString *)kb_defaultKeyboardLanguageCodeForAppLanguageCode:(NSString *)appLanguageCode {
+    NSString *lc = (appLanguageCode ?: @"").lowercaseString;
+    if ([lc hasPrefix:@"es"]) { return @"es"; }
+    if ([lc hasPrefix:@"pt"]) { return @"pt"; }
+    if ([lc hasPrefix:@"id"]) { return @"id"; }
+    if ([lc hasPrefix:@"zh-hant"]) { return @"zh-Hant-Pinyin"; }
+    return @"en";
+}
+
+- (BOOL)kb_didUserSelectKeyboardProfileInAppGroup:(NSUserDefaults *)appGroup {
+    return [appGroup boolForKey:AppGroup_DidUserSelectKeyboardProfile];
+}
+
+- (nullable KBInputProfileLayout *)kb_defaultLayoutForCurrentAppLanguage {
+    NSString *appLang = [KBLocalizationManager shared].currentLanguageCode ?: KBLanguageCodeEnglish;
+    NSString *kbLang = [self kb_defaultKeyboardLanguageCodeForAppLanguageCode:appLang];
+    KBInputProfile *profile = [[KBInputProfileManager sharedManager] profileForLanguageCode:kbLang];
+    if (!profile) {
+        profile = [[KBInputProfileManager sharedManager] profileForLanguageCode:@"en"];
+    }
+    return profile.layouts.firstObject;
+}
+
 - (NSString *)layoutJsonIdForProfileId:(NSString *)profileId {
     if (profileId.length == 0) {
         return @"letters";
@@ -51,19 +76,31 @@
 - (nullable NSString *)currentProfileId {
     NSUserDefaults *appGroup = [[NSUserDefaults alloc] initWithSuiteName:AppGroup];
     NSString *profileId = [appGroup stringForKey:AppGroup_SelectedKeyboardProfileId];
-    return profileId;
+    if ([self kb_didUserSelectKeyboardProfileInAppGroup:appGroup]) {
+        return profileId;
+    }
+    KBInputProfileLayout *layout = [self kb_defaultLayoutForCurrentAppLanguage];
+    return layout.profileId.length > 0 ? layout.profileId : profileId;
 }
 
 - (nullable NSString *)currentLanguageCode {
     NSUserDefaults *appGroup = [[NSUserDefaults alloc] initWithSuiteName:AppGroup];
     NSString *languageCode = [appGroup stringForKey:AppGroup_SelectedKeyboardLanguageCode];
-    return languageCode;
+    if ([self kb_didUserSelectKeyboardProfileInAppGroup:appGroup]) {
+        return languageCode;
+    }
+    NSString *appLang = [KBLocalizationManager shared].currentLanguageCode ?: KBLanguageCodeEnglish;
+    return [self kb_defaultKeyboardLanguageCodeForAppLanguageCode:appLang];
 }
 
 - (nullable NSString *)currentLayoutVariant {
     NSUserDefaults *appGroup = [[NSUserDefaults alloc] initWithSuiteName:AppGroup];
     NSString *layoutVariant = [appGroup stringForKey:AppGroup_SelectedKeyboardLayoutVariant];
-    return layoutVariant;
+    if ([self kb_didUserSelectKeyboardProfileInAppGroup:appGroup]) {
+        return layoutVariant;
+    }
+    KBInputProfileLayout *layout = [self kb_defaultLayoutForCurrentAppLanguage];
+    return layout.variant.length > 0 ? layout.variant : layoutVariant;
 }
 
 @end