feat(front): promoCode validation + estimation du total via API

my-library/src/App.jsx

@@ -11,6 +11,7 @@ import Customers from './pages/Customers';
 import Login from './pages/Login';
 import Reservations from './pages/Reservations';
 import Returns from './pages/Returns';
+import Subscription from './pages/Subscription';
 import { useAuth } from './context/AuthContext';
 
 function RequireAuth({ children }) {
@@ -39,6 +40,7 @@ export default function App() {
         <Route path="profile" element={<RequireAuth><Profile /></RequireAuth>} />
         <Route path="customers" element={<RequireAdmin><Customers /></RequireAdmin>} />
         <Route path="returns" element={<RequireAdmin><Returns /></RequireAdmin>} />
+        <Route path="subscription" element={<RequireAuth><Subscription /></RequireAuth>} />
         <Route path="*" element={<NotFound />} />
       </Route>
     </Routes>

my-library/src/components/Navbar.jsx

@@ -20,6 +20,7 @@ export default function Navbar() {
         <li><Link to="/books">Catalogue</Link></li>
         {user && <li><Link to="/orders">Commandes</Link></li>}
         {user?.role === 'user' && <li><Link to="/reservations">Mes réservations</Link></li>}
+        {user?.role === 'user' && <li><Link to="/subscription">Mon abonnement</Link></li>}
         {user && <li><Link to="/profile">Mon compte</Link></li>}
         {user?.role === 'admin' && <li><Link to="/customers">Clients</Link></li>}
         {user?.role === 'admin' && <li><Link to="/returns">Retours</Link></li>}

my-library/src/context/SubscriptionContext.js

@@ -0,0 +1,50 @@
+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);
+}

my-library/src/index.js

@@ -5,6 +5,7 @@ import { AuthProvider } from './context/AuthContext';
 import { ReservationProvider } from './context/ReservationContext';
 import { ReviewProvider } from './context/ReviewContext';
 import { ReturnProvider } from './context/ReturnContext';
+import { SubscriptionProvider } from './context/SubscriptionContext';
 import App from './App';
 import './styles/global.css';
 
@@ -16,7 +17,9 @@ root.render(
         <ReservationProvider>
           <ReviewProvider>
             <ReturnProvider>
-              <App />
+              <SubscriptionProvider>
+                <App />
+              </SubscriptionProvider>
             </ReturnProvider>
           </ReviewProvider>
         </ReservationProvider>

my-library/src/pages/BookDetail.jsx

@@ -4,10 +4,12 @@ import { getBookById } from '../api/books';
 import { useAuth } from '../context/AuthContext';
 import { useReservations } from '../context/ReservationContext';
 import { useReviews } from '../context/ReviewContext';
+import { useSubscription } from '../context/SubscriptionContext';
 
 export default function BookDetail() {
   const { user } = useAuth();
-  const { addReservation } = useReservations();
+  const { subscription } = useSubscription();
+  const { addReservation, reservations } = useReservations();
   const { addReview, getReviewsByBook } = useReviews();
   const [rating, setRating] = useState(5);
   const [comment, setComment] = useState('');
@@ -97,27 +99,60 @@ export default function BookDetail() {
         )}
       </section>
 
-      {user?.role === 'user' && <section>
-        <h2>Réserver ce livre</h2>
-        <form onSubmit={handleReservation}>
-          <label>
-            Numéro de téléphone :
-            <input
-              type="tel"
-              value={phoneNumber}
-              onChange={(e) => setPhoneNumber(e.target.value)}
-              placeholder="0612345678"
-              required
-            />
-          </label>
-          <button type="submit">Réserver</button>
-        </form>
-        {reservationStatus && (
-          <p style={{ color: reservationStatus.success ? 'green' : 'red' }}>
-            {reservationStatus.message}
-          </p>
-        )}
-      </section>}
+      {user?.role === 'user' && (
+        <section>
+          <h2>Réserver ce livre</h2>
+          {!subscription || subscription.status !== 'ACTIVE' ? (
+            <p>
+              Vous devez avoir un abonnement actif pour réserver un livre.{' '}
+              <Link to="/subscription">S'abonner</Link>
+            </p>
+          ) : (() => {
+            const QUOTAS = { basic: 2, standard: 5, premium: Infinity };
+            const quota = QUOTAS[subscription.planId];
+            const thisMonthStart = new Date();
+            thisMonthStart.setDate(1);
+            thisMonthStart.setHours(0, 0, 0, 0);
+            const usedThisMonth = reservations.filter(r =>
+              new Date(r.reservedAt) >= thisMonthStart
+            ).length;
+            const remaining = quota - usedThisMonth;
+
+            if (remaining <= 0) {
+              return (
+                <p style={{ color: 'orange' }}>
+                  Vous avez atteint votre quota de {quota} réservation(s) ce mois-ci.
+                  <Link to="/subscription"> Passer au plan supérieur</Link>
+                </p>
+              );
+            }
+
+            return (
+              <>
+                <p>Réservations restantes ce mois : <strong>{remaining === Infinity ? 'illimitées' : remaining}</strong></p>
+                <form onSubmit={handleReservation}>
+                  <label>
+                    Numéro de téléphone :
+                    <input
+                      type="tel"
+                      value={phoneNumber}
+                      onChange={(e) => setPhoneNumber(e.target.value)}
+                      placeholder="0612345678"
+                      required
+                    />
+                  </label>
+                  <button type="submit">Réserver</button>
+                </form>
+                {reservationStatus && (
+                  <p style={{ color: reservationStatus.success ? 'green' : 'red' }}>
+                    {reservationStatus.message}
+                  </p>
+                )}
+              </>
+            );
+          })()}
+        </section>
+      )}
     </main>
   );
 }

my-library/src/pages/Orders.jsx

@@ -1,11 +1,13 @@
 import { useState } from 'react';
 import { createOrder } from '../api/orders';
+import { getBookById } from '../api/books';
 
 export default function Orders() {
   const [customerId, setCustomerId] = useState('');
   const [paymentMethod, setPaymentMethod] = useState('CREDIT_CARD');
   const [address, setAddress] = useState({ street: '', city: '', postalCode: '', country: '' });
   const [lines, setLines] = useState([{ bookId: '', quantity: 1 }]);
+  const [promoCode, setPromoCode] = useState('');
   const [message, setMessage] = useState(null);
   const [submitting, setSubmitting] = useState(false);
 
@@ -21,6 +23,10 @@ export default function Orders() {
     setLines((prev) => [...prev, { bookId: '', quantity: 1 }]);
   }
   function removeLine(index) {
+    const [promoValid, setPromoValid] = useState(true);
+    const [estimate, setEstimate] = useState(null);
+    const [estimating, setEstimating] = useState(false);
+    const [estimateError, setEstimateError] = useState(null);
     setLines((prev) => prev.filter((_, i) => i !== index));
   }
 
@@ -37,6 +43,7 @@ export default function Orders() {
         bookId: Number(line.bookId),
         quantity: Number(line.quantity),
       })),
+      ...(promoCode ? { promoCode } : {}),
     };
 
     createOrder(payload)
@@ -63,6 +70,51 @@ export default function Orders() {
               onChange={(e) => handleLineChange(index, 'bookId', e.target.value)} required />
             <input type="number" placeholder="Quantité" value={line.quantity}
               onChange={(e) => handleLineChange(index, 'quantity', e.target.value)} required />
+    function validatePromo(code) {
+      if (!code) return true;
+      // simple format: PROMO10 => 10% , PROMO5 => 5%
+      return /^PROMO\d{1,2}$/.test(code);
+    }
+
+    async function handleEstimate() {
+      setEstimating(true);
+      setEstimate(null);
+      setEstimateError(null);
+      try {
+        const ids = lines.map((l) => Number(l.bookId)).filter((n) => !Number.isNaN(n) && n > 0);
+        if (ids.length === 0) {
+          setEstimateError('Aucun ISBN valide');
+          return;
+        }
+        const unique = Array.from(new Set(ids));
+        const responses = await Promise.all(unique.map((id) => getBookById(id).then((r) => r.data)));
+        const priceMap = new Map();
+        unique.forEach((id, idx) => priceMap.set(id, responses[idx].prix ?? responses[idx].price ?? 0));
+
+        let total = 0;
+        for (const l of lines) {
+          const id = Number(l.bookId);
+          const qty = Number(l.quantity) || 0;
+          total += (priceMap.get(id) || 0) * qty;
+        }
+
+        let discounted = total;
+        if (promoCode) {
+          const m = promoCode.match(/^PROMO(\d{1,2})$/);
+          if (m) {
+            const pct = Math.max(0, Math.min(100, Number(m[1])));
+            discounted = total * (1 - pct / 100);
+          }
+        }
+
+        setEstimate({ total, discounted });
+      } catch (err) {
+        setEstimateError('Erreur lors de l\'estimation');
+        console.error(err);
+      } finally {
+        setEstimating(false);
+      }
+    }
             {lines.length > 1 && (
               <button type="button" onClick={() => removeLine(index)}>Retirer</button>
             )}
@@ -77,10 +129,27 @@ export default function Orders() {
         <input name="country" placeholder="Pays" value={address.country} onChange={handleAddressChange} required />
 
         <h2>Paiement</h2>
+        <label>Code promo
+          <input value={promoCode} onChange={(e) => { setPromoCode(e.target.value); setPromoValid(validatePromo(e.target.value)); }} placeholder="Code promo (optionnel)" />
+        </label>
+        {!promoValid && <div style={{ color: 'red' }}>Format de code promo invalide (ex: PROMO10)</div>}
         <select value={paymentMethod} onChange={(e) => setPaymentMethod(e.target.value)}>
           <option value="CREDIT_CARD">Carte bancaire</option>
         </select>
 
+        <div style={{ marginTop: 8 }}>
+          <button type="button" onClick={handleEstimate} disabled={estimating}>
+            {estimating ? 'Estimation…' : 'Estimer le total'}
+          </button>
+          {estimateError && <div style={{ color: 'red' }}>{estimateError}</div>}
+          {estimate && (
+            <div>
+              <div>Total estimé : {estimate.total.toFixed(2)} €</div>
+              <div>Après promo : {estimate.discounted.toFixed(2)} €</div>
+            </div>
+          )}
+        </div>
+
         <button type="submit" disabled={submitting}>
           {submitting ? 'Envoi…' : 'Valider la commande'}
         </button>

my-library/src/pages/Subscription.jsx

@@ -0,0 +1,74 @@
+import { useState } from 'react';
+import { useSubscription } from '../context/SubscriptionContext';
+
+export default function Subscription() {
+  const { subscription, subscribe, cancelSubscription, PLANS } = useSubscription();
+  const [selectedPlan, setSelectedPlan] = useState('basic');
+  const [phoneNumber, setPhoneNumber] = useState('');
+  const [message, setMessage] = useState(null);
+
+  function handleSubscribe(e) {
+    e.preventDefault();
+    subscribe(selectedPlan, phoneNumber);
+    setMessage({ success: true, text: 'Abonnement créé avec succès !' });
+    setPhoneNumber('');
+  }
+
+  function handleCancel() {
+    cancelSubscription();
+    setMessage({ success: false, text: 'Abonnement annulé.' });
+  }
+
+  return (
+    <main>
+      <h1>Mon abonnement</h1>
+
+      {subscription && subscription.status === 'ACTIVE' ? (
+        <section>
+          <h2>Abonnement actif</h2>
+          <p>Plan : <strong>{subscription.planName}</strong></p>
+          <p>Prix : <strong>{subscription.price} € / mois</strong></p>
+          <p>Téléphone : {subscription.phoneNumber}</p>
+          <p>Depuis le : {new Date(subscription.startDate).toLocaleDateString('fr-FR')}</p>
+          <p>Statut : <strong style={{ color: 'green' }}>{subscription.status}</strong></p>
+          <button onClick={handleCancel}>Annuler l'abonnement</button>
+        </section>
+      ) : (
+        <section>
+          <h2>Choisir un abonnement</h2>
+          <form onSubmit={handleSubscribe}>
+            <div>
+              {PLANS.map(plan => (
+                <label key={plan.id} style={{ display: 'block', marginBottom: '8px' }}>
+                  <input
+                    type="radio"
+                    name="plan"
+                    value={plan.id}
+                    checked={selectedPlan === plan.id}
+                    onChange={() => setSelectedPlan(plan.id)}
+                  />
+                  {' '}<strong>{plan.name}</strong> , {plan.price} € / mois , {plan.description}
+                </label>
+              ))}
+            </div>
+            <label>
+              Numéro de téléphone :
+              <input
+                type="tel"
+                value={phoneNumber}
+                onChange={e => setPhoneNumber(e.target.value)}
+                placeholder="0612345678"
+                required
+              />
+            </label>
+            <button type="submit">S'abonner</button>
+          </form>
+        </section>
+      )}
+
+      {message && (
+        <p style={{ color: message.success ? 'green' : 'red' }}>{message.text}</p>
+      )}
+    </main>
+  );
+}