first commit of refactor

frontend/src/api/alertEvents.jsx

@@ -0,0 +1,36 @@
+// API client for alert event history
+
+import { getAuthHeadersSimple } from './authHeaders';
+
+const API_BASE = '/api';
+
+/**
+ * Get all alert events (history)
+ * @returns {Promise<Array>} List of alert events, sorted by most recent first
+ */
+export async function getAlertEvents() {
+  try {
+  const headers = await getAuthHeadersSimple();
+  const response = await fetch(`${API_BASE}/alert-events`, {
+    headers: headers
+  });
+  
+  if (!response.ok) {
+      let errorMessage = 'Failed to fetch alert events';
+      try {
+    const error = await response.json();
+        errorMessage = error.message || errorMessage;
+      } catch {
+        errorMessage = `Server error: ${response.status} ${response.statusText}`;
+      }
+      throw new Error(errorMessage);
+  }
+  
+  return response.json();
+  } catch (error) {
+    if (error.message.includes('fetch')) {
+      throw new Error('Cannot connect to server. Is the backend running?');
+    }
+    throw error;
+  }
+}