From effed0925808a09ca1a2fbc781b6c259eaa36268 Mon Sep 17 00:00:00 2001
From: Bezhan Salleh <bezhan_salleh@yahoo.com>
Date: Thu, 25 Jan 2024 04:36:12 +0430
Subject: [PATCH] wip

---
 src/Http/Middleware/SwitchLanguageLocale.php | 27 ++------------
 src/LanguageSwitch.php                       | 37 ++++++++++++++++++++
 2 files changed, 40 insertions(+), 24 deletions(-)

diff --git a/src/Http/Middleware/SwitchLanguageLocale.php b/src/Http/Middleware/SwitchLanguageLocale.php
index 5ea7c08..bebdbe3 100644
--- a/src/Http/Middleware/SwitchLanguageLocale.php
+++ b/src/Http/Middleware/SwitchLanguageLocale.php
@@ -10,31 +10,10 @@ class SwitchLanguageLocale
 {
     public function handle(Request $request, Closure $next): \Illuminate\Http\Response | \Illuminate\Http\RedirectResponse
     {
-        $locale = session()->get('locale')
-            ?? $request->get('locale')
-            ?? $request->cookie('filament_language_switch_locale')
-            ?? $this->getBrowserLocale($request)
-            ?? config('app.locale', 'en');
-
-        if (in_array($locale, LanguageSwitch::make()->getLocales())) {
-            app()->setLocale($locale);
-        }
+        app()->setLocale(
+            LanguageSwitch::make()->getPreferredLocale()
+        );
 
         return $next($request);
     }
-
-    private function getBrowserLocale(Request $request): ?string
-    {
-        $appLocales = LanguageSwitch::make()->getLocales();
-
-        $userLocales = preg_split('/[,;]/', $request->server('HTTP_ACCEPT_LANGUAGE'));
-
-        foreach ($userLocales as $locale) {
-            if (in_array($locale, $appLocales)) {
-                return $locale;
-            }
-        }
-
-        return null;
-    }
 }
diff --git a/src/LanguageSwitch.php b/src/LanguageSwitch.php
index f72f045..1547c6a 100755
--- a/src/LanguageSwitch.php
+++ b/src/LanguageSwitch.php
@@ -38,6 +38,11 @@ class LanguageSwitch extends Component
 
     protected Closure | string $renderHook = 'panels::global-search.after';
 
+    protected Closure | string | null $userPreferredLocale = null;
+
+    protected Closure | string | null $preferredLocale = null;
+
+
     public static function make(): static
     {
         $static = app(static::class);
@@ -146,6 +151,20 @@ public function renderHook(string $hook): static
         return $this;
     }
 
+    public function userPreferredLocale(Closure | string | null $locale): static
+    {
+        $this->userPreferredLocale = $locale;
+
+        return $this;
+    }
+
+    public function preferredLocale(Closure | string $locale): static
+    {
+        $this->preferredLocale = $locale;
+
+        return $this;
+    }
+
     public function visible(bool | Closure $insidePanels = true, bool | Closure $outsidePanels = false): static
     {
         $this->visibleInsidePanels = $insidePanels;
@@ -229,6 +248,24 @@ public function getRenderHook(): string
         return (string) $this->evaluate($this->renderHook);
     }
 
+    public function getUserPreferredLocale(): ?string
+    {
+        return $this->evaluate($this->userPreferredLocale) ?? null;
+    }
+
+    public function getPreferredLocale(): string
+    {
+        $locale = $this->perferredLocale ??
+            session()->get('locale') ??
+            request()->get('locale') ??
+            request()->cookie('filament_language_switch_locale') ??
+            $this->getUserPreferredLocale() ??
+            config('app.locale', 'en') ??
+            request()->getPreferredLanguage();
+
+        return in_array($locale, $this->getLocales(), true) ? $locale : config('app.locale');
+    }
+
     /**
      * @return array<string, Panel>
      */