Enhance toast notifications and improve settings form submission; implement async handling and error reporting for better user feedback

static/js/widget.js

@@ -1,3 +1,47 @@
+function renderToast({ message, type = 'info', timeout = 3000 }) {
+    if (!message) {
+        console.warn('renderToast was called without a message.');
+        return;
+    }
+
+    // Auto-create the toast container if it doesn't exist
+    let container = document.getElementById('toast-container');
+    if (!container) {
+        container = document.createElement('div');
+        container.id = 'toast-container';
+        container.className = 'toast-container position-fixed bottom-0 end-0 p-3';
+        document.body.appendChild(container);
+    }
+
+    const toastId = `toast-${Date.now()}`;
+    const wrapper = document.createElement('div');
+    wrapper.innerHTML = `
+        <div id="${toastId}" class="toast align-items-center text-bg-${type}" role="alert" aria-live="assertive" aria-atomic="true">
+            <div class="d-flex">
+                <div class="toast-body">
+                    ${message}
+                </div>
+                <button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast" aria-label="Close"></button>
+            </div>
+        </div>
+    `;
+
+    const toastElement = wrapper.firstElementChild;
+    container.appendChild(toastElement);
+
+    const toast = new bootstrap.Toast(toastElement, { delay: timeout });
+    toast.show();
+
+    toastElement.addEventListener('hidden.bs.toast', () => {
+        toastElement.remove();
+
+        // Clean up container if empty
+        if (container.children.length === 0) {
+            container.remove();
+        }
+    });
+}
+
 const ComboBoxWidget = (() => {
     let tempIdCounter = 1;
 

templates/layout.html

@@ -56,6 +56,9 @@
             {% block content %}{% endblock %}
     </main>
 
+    <!-- Toast Container -->
+    <div id="toast-container" class="toast-container position-fixed bottom-0 end-0 p-3"></div>
+
     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.6/dist/js/bootstrap.bundle.min.js"
         integrity="sha384-j1CDi7MgGQ12Z7Qab0qlWQ/Qqz24Gc6BM0thvEMVjHnfYGF0rmFCozFSxQBxwHKO"
         crossorigin="anonymous"></script>

templates/settings.html

@@ -221,33 +221,36 @@
             });
         });
 
-        form.addEventListener('submit', (event) => {
+        form.addEventListener('submit', async (event) => {
             event.preventDefault();
             try {
                 const state = buildFormState();
-                fetch('/api/settings', {
+            
+                const response = await fetch('/api/settings', {
                     method: 'POST',
-                    headers: {
+                    headers: { 'Content-Type': 'application/json' },
-                        'Content-Type': 'application/json'
-                    },
                     body: JSON.stringify(state)
-                })
+                });
-                .then(response => {
+            
+                const contentType = response.headers.get("content-type");
+            
                 if (!response.ok) {
-                        return response.json().then(data => {
+                    if (contentType && contentType.includes("application/json")) {
+                        const data = await response.json();
                         throw new Error(data.errors?.join("\n") || "Unknown error");
-                        });
+                    } else {
+                        const text = await response.text();
+                        throw new Error("Unexpected response:\n" + text.slice(0, 200));
                     }
-                    return response.json();
+                }
-                })
+            
-                .then(data => {
+                const data = await response.json();
                 console.log("Sync result:", data);
-                })
+                renderToast({ message: 'Settings updated successfully.', type: 'success' });
-                .catch(err => {
+            
-                    console.error("Submission error:", err);
-                });
             } catch (err) {
-                console.error("Failed to build form state:", err);
+                console.error("Submission error:", err);
+                renderToast({ message: `Failed to update settings, ${err}`, type: 'danger' });
             }
         });