chore: add parrainage

frontend-admin/src/utils/pushTokenUtils.ts

@@ -0,0 +1,33 @@
+import * as Notifications from "expo-notifications";
+import * as Device from "expo-device";
+import { Platform } from "react-native";
+
+/**
+ * Demande les permissions et retourne le token Expo push.
+ * Retourne null si non supporté (simulateur, refus de permission).
+ */
+export async function getExpoPushToken(): Promise<string | null> {
+    if (!Device.isDevice) return null;
+
+    const { status: existing } = await Notifications.getPermissionsAsync();
+    let finalStatus = existing;
+
+    if (existing !== "granted") {
+        const { status } = await Notifications.requestPermissionsAsync();
+        finalStatus = status;
+    }
+
+    if (finalStatus !== "granted") return null;
+
+    if (Platform.OS === "android") {
+        await Notifications.setNotificationChannelAsync("orders", {
+            name: "Nouvelles commandes",
+            importance: Notifications.AndroidImportance.MAX,
+            vibrationPattern: [0, 250, 250, 250],
+            sound: "default",
+        });
+    }
+
+    const tokenData = await Notifications.getExpoPushTokenAsync();
+    return tokenData.data;
+}