✨ Story 5.3: persistance localStorage

assets/js/state.js

@@ -0,0 +1,57 @@
+/**
+ * Gestionnaire d'état pour le localStorage
+ */
+const AppState = {
+    STORAGE_KEY: 'portfolio_contact_form',
+    EXCLUDED_FIELDS: ['csrf_token', 'password', 'recaptcha_token'],
+
+    isStorageAvailable() {
+        try {
+            const test = '__storage_test__';
+            localStorage.setItem(test, test);
+            localStorage.removeItem(test);
+            return true;
+        } catch (e) {
+            return false;
+        }
+    },
+
+    saveFormData(data) {
+        if (!this.isStorageAvailable()) return;
+
+        try {
+            const filteredData = {};
+            Object.keys(data).forEach((key) => {
+                if (!this.EXCLUDED_FIELDS.includes(key)) {
+                    filteredData[key] = data[key];
+                }
+            });
+
+            localStorage.setItem(this.STORAGE_KEY, JSON.stringify(filteredData));
+        } catch (e) {
+            console.warn('Impossible de sauvegarder dans localStorage:', e);
+        }
+    },
+
+    getFormData() {
+        if (!this.isStorageAvailable()) return null;
+
+        try {
+            const data = localStorage.getItem(this.STORAGE_KEY);
+            return data ? JSON.parse(data) : null;
+        } catch (e) {
+            console.warn('Impossible de charger depuis localStorage:', e);
+            return null;
+        }
+    },
+
+    clearFormData() {
+        if (!this.isStorageAvailable()) return;
+
+        try {
+            localStorage.removeItem(this.STORAGE_KEY);
+        } catch (e) {
+            // Silencieux
+        }
+    }
+};