Gate analytics and cache public API requests

frontend/app/api/analytics/events/route.ts

@@ -5,8 +5,14 @@ import {
 } from "@/lib/backend-auth";
 
 const API_BASE = process.env.POLYWEATHER_API_BASE_URL;
+const ANALYTICS_ENABLED =
+  process.env.NEXT_PUBLIC_POLYWEATHER_APP_ANALYTICS === "true";
 
 export async function POST(req: NextRequest) {
+  if (!ANALYTICS_ENABLED) {
+    return new NextResponse(null, { status: 204 });
+  }
+
   if (!API_BASE) {
     return NextResponse.json(
       { error: "POLYWEATHER_API_BASE_URL is not configured" },

frontend/app/api/cities/route.ts

@@ -18,10 +18,15 @@ export async function GET(req: NextRequest) {
   }
 
   try {
-    const auth = await buildBackendRequestHeaders(req);
-    const res = await fetch(`${API_BASE}/api/cities`, {
+    const auth = await buildBackendRequestHeaders(req, {
+      includeSupabaseIdentity: false,
+    });
+    const fetchOptions = {
       headers: auth.headers,
-      cache: "no-store",
+      next: { revalidate: 300 },
+    } as const;
+    const res = await fetch(`${API_BASE}/api/cities`, {
+      ...fetchOptions,
     });
     if (!res.ok) {
       const raw = await res.text();

frontend/app/api/city/[name]/route.ts

@@ -23,7 +23,9 @@ export async function GET(
   const url = `${API_BASE}/api/city/${encodeURIComponent(name)}?force_refresh=${forceRefresh}`;
 
   try {
-    const auth = await buildBackendRequestHeaders(req);
+    const auth = await buildBackendRequestHeaders(req, {
+      includeSupabaseIdentity: false,
+    });
     const res = await fetch(url, {
       headers: auth.headers,
       cache: "no-store",

frontend/app/api/city/[name]/summary/route.ts

@@ -25,10 +25,21 @@ export async function GET(
   const url = `${API_BASE}/api/city/${encodeURIComponent(name)}/summary?force_refresh=${forceRefresh}`;
 
   try {
-    const auth = await buildBackendRequestHeaders(req);
+    const auth = await buildBackendRequestHeaders(req, {
+      includeSupabaseIdentity: false,
+    });
+    const fetchOptions =
+      bypassCache
+        ? {
+            headers: auth.headers,
+            cache: "no-store" as const,
+          }
+        : {
+            headers: auth.headers,
+            next: { revalidate: 20 },
+          };
     const res = await fetch(url, {
-      headers: auth.headers,
-      cache: "no-store",
+      ...fetchOptions,
     });
     if (!res.ok) {
       const raw = await res.text();

frontend/app/api/healthz/route.ts

@@ -15,7 +15,9 @@ export async function GET(req: NextRequest) {
   }
 
   try {
-    const auth = await buildBackendRequestHeaders(req);
+    const auth = await buildBackendRequestHeaders(req, {
+      includeSupabaseIdentity: false,
+    });
     const res = await fetch(`${API_BASE}/healthz`, {
       headers: auth.headers,
       cache: "no-store",

frontend/app/api/history/[name]/route.ts

@@ -24,9 +24,12 @@ export async function GET(
 
   try {
     const auth = await buildBackendRequestHeaders(req);
-    const res = await fetch(url, {
+    const fetchOptions = {
       headers: auth.headers,
-      cache: "no-store",
+      next: { revalidate: 60 },
+    } as const;
+    const res = await fetch(url, {
+      ...fetchOptions,
     });
     if (!res.ok) {
       const raw = await res.text();

frontend/app/api/vitals/route.ts

@@ -5,6 +5,9 @@ import {
   recordVitalsSample,
 } from "@/lib/vitals-store";
 
+const WEB_VITALS_ENABLED =
+  process.env.NEXT_PUBLIC_POLYWEATHER_WEB_VITALS === "true";
+
 type VitalsPayload = {
   id?: string;
   metric?: string;
@@ -15,6 +18,10 @@ type VitalsPayload = {
 };
 
 export async function POST(request: Request) {
+  if (!WEB_VITALS_ENABLED) {
+    return new NextResponse(null, { status: 204 });
+  }
+
   try {
     const payload = (await request.json()) as VitalsPayload;
     const metric = normalizeMetricName(payload.metric);
@@ -56,6 +63,16 @@ export async function POST(request: Request) {
 }
 
 export async function GET(request: Request) {
+  if (!WEB_VITALS_ENABLED) {
+    return NextResponse.json({
+      ok: true,
+      disabled: true,
+      generatedAt: Date.now(),
+      sampleCount: 0,
+      routes: {},
+    });
+  }
+
   const { searchParams } = new URL(request.url);
   const targetRoute = String(searchParams.get("route") || "").trim();
   const summary = getVitalsSummary();

frontend/app/layout.tsx

@@ -1,5 +1,4 @@
 import type { Metadata } from "next";
-import { Analytics } from "@vercel/analytics/react";
 import "./globals.css";
 
 export const metadata: Metadata = {
@@ -31,10 +30,7 @@ export default function RootLayout({
           rel="stylesheet"
         />
       </head>
-      <body className="min-h-screen font-sans antialiased">
-        {children}
-        <Analytics />
-      </body>
+      <body className="min-h-screen font-sans antialiased">{children}</body>
     </html>
   );
 }