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my-library/src/context/SubscriptionContext.js

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+import { createContext, useContext, useState } from 'react';
+
+const SubscriptionContext = createContext(null);
+
+const PLANS = [
+  { id: 'basic', name: 'Basic', price: 9.99, description: '2 livres par mois' },
+  { id: 'standard', name: 'Standard', price: 14.99, description: '5 livres par mois' },
+  { id: 'premium', name: 'Premium', price: 24.99, description: 'Livres illimités par mois' },
+];
+
+export { PLANS };
+
+export function SubscriptionProvider({ children }) {
+  const [subscription, setSubscription] = useState(() => {
+    const saved = localStorage.getItem('subscription');
+    return saved ? JSON.parse(saved) : null;
+  });
+
+  function subscribe(planId, phoneNumber) {
+    const plan = PLANS.find(p => p.id === planId);
+    const newSubscription = {
+      subscriptionId: crypto.randomUUID(),
+      planId,
+      planName: plan.name,
+      price: plan.price,
+      phoneNumber,
+      status: 'ACTIVE',
+      startDate: new Date().toISOString(),
+    };
+    setSubscription(newSubscription);
+    localStorage.setItem('subscription', JSON.stringify(newSubscription));
+    return newSubscription;
+  }
+
+  function cancelSubscription() {
+    const updated = { ...subscription, status: 'CANCELLED' };
+    setSubscription(updated);
+    localStorage.setItem('subscription', JSON.stringify(updated));
+  }
+
+  return (
+    <SubscriptionContext.Provider value={{ subscription, subscribe, cancelSubscription, PLANS }}>
+      {children}
+    </SubscriptionContext.Provider>
+  );
+}
+
+export function useSubscription() {
+  return useContext(SubscriptionContext);
+}