fix theme system

hooks/use-theme-context.tsx

@@ -14,7 +14,10 @@ import {
   useState,
   ReactNode,
 } from "react";
-import { useColorScheme as useSystemColorScheme } from "react-native";
+import {
+  useColorScheme as useSystemColorScheme,
+  Appearance,
+} from "react-native";
 
 type ThemeMode = "light" | "dark" | "system";
 type ColorScheme = "light" | "dark";
@@ -32,23 +35,64 @@ const ThemeContext = createContext<ThemeContextType | undefined>(undefined);
 const THEME_STORAGE_KEY = "theme_mode";
 
 export function ThemeProvider({ children }: { children: ReactNode }) {
-  // Dùng useColorScheme từ react-native để detect theme thiết bị
-  const deviceColorScheme = useSystemColorScheme(); // "light" | "dark" | null | undefined
+  // State để force re-render khi system theme thay đổi
+  const [systemTheme, setSystemTheme] = useState<ColorScheme>(() => {
+    const current = Appearance.getColorScheme();
+    console.log("[Theme] Initial system theme:", current);
+    return current === "dark" ? "dark" : "light";
+  });
 
   // State lưu user's choice (light/dark/system)
   const [themeMode, setThemeModeState] = useState<ThemeMode>("system");
   const [isLoaded, setIsLoaded] = useState(false);
 
+  // Listen vào system theme changes - đăng ký ngay từ đầu
+  useEffect(() => {
+    console.log("[Theme] Registering appearance listener");
+
+    const subscription = Appearance.addChangeListener(({ colorScheme }) => {
+      const newScheme = colorScheme === "dark" ? "dark" : "light";
+      console.log(
+        "[Theme] System theme changed to:",
+        newScheme,
+        "at",
+        new Date().toLocaleTimeString()
+      );
+      setSystemTheme(newScheme);
+    });
+
+    // Double check current theme khi mount
+    const currentScheme = Appearance.getColorScheme();
+    const current = currentScheme === "dark" ? "dark" : "light";
+    if (current !== systemTheme) {
+      console.log("[Theme] Syncing system theme on mount:", current);
+      setSystemTheme(current);
+    }
+
+    return () => {
+      console.log("[Theme] Removing appearance listener");
+      subscription.remove();
+    };
+  }, []);
+
   // Xác định colorScheme cuối cùng
   const colorScheme: ColorScheme =
-    themeMode === "system"
-      ? deviceColorScheme === "dark"
-        ? "dark"
-        : "light"
-      : themeMode;
+    themeMode === "system" ? systemTheme : themeMode;
 
   const colors = Colors[colorScheme];
 
+  // Log để debug
+  useEffect(() => {
+    console.log(
+      "[Theme] Current state - Mode:",
+      themeMode,
+      "| Scheme:",
+      colorScheme,
+      "| System:",
+      systemTheme
+    );
+  }, [themeMode, colorScheme, systemTheme]);
+
   useEffect(() => {
     const loadThemeMode = async () => {
       try {
@@ -85,17 +129,15 @@ export function ThemeProvider({ children }: { children: ReactNode }) {
   // Chờ theme load xong trước khi render
   if (!isLoaded) {
     // Render với default theme (system) khi đang load
-    const defaultScheme: ColorScheme =
-      deviceColorScheme === "dark" ? "dark" : "light";
     return (
       <ThemeContext.Provider
         value={{
           themeMode: "system",
-          colorScheme: defaultScheme,
-          colors: Colors[defaultScheme],
+          colorScheme: systemTheme,
+          colors: Colors[systemTheme],
           setThemeMode: async () => {},
           getColor: (colorName: ColorName) =>
-            Colors[defaultScheme][colorName] || Colors[defaultScheme].text,
+            Colors[systemTheme][colorName] || Colors[systemTheme].text,
         }}
       >
         {children}