feat: implement authentication and core API endpoints - auth, podcasts, episodes

frontend/src/services/api.ts

@@ -0,0 +1,35 @@
+import axios from 'axios';
+
+const API_URL = import.meta.env.VITE_API_URL || 'http://localhost:5000/api';
+
+const api = axios.create({
+  baseURL: API_URL,
+  headers: {
+    'Content-Type': 'application/json',
+  },
+});
+
+// Add auth token to requests
+api.interceptors.request.use((config) => {
+  const token = localStorage.getItem('accessToken');
+  if (token) {
+    config.headers.Authorization = `Bearer ${token}`;
+  }
+  return config;
+});
+
+// Handle token refresh on 401
+api.interceptors.response.use(
+  (response) => response,
+  async (error) => {
+    if (error.response?.status === 401) {
+      // Token expired - could implement refresh token logic here
+      localStorage.removeItem('accessToken');
+      localStorage.removeItem('refreshToken');
+      window.location.href = '/login';
+    }
+    return Promise.reject(error);
+  }
+);
+
+export default api;