refactor: separate regional briefing and weather sources

server/providers/regional/http.js

@@ -0,0 +1,37 @@
+import { readResponseJsonCapped, readResponseTextCapped } from '../common/http.js';
+
+const REGIONAL_MAX_RESPONSE_BYTES = 2 * 1024 * 1024;
+
+async function fetchRegionalJson(url, {
+  headers = {},
+  timeoutMs = 9000,
+  maxBytes = REGIONAL_MAX_RESPONSE_BYTES,
+} = {}) {
+  const controller = new AbortController();
+  const timeout = setTimeout(() => controller.abort(), timeoutMs);
+  try {
+    const response = await fetch(url, { signal: controller.signal, headers });
+    if (!response.ok) throw new Error(`Upstream returned ${response.status}`);
+    return readResponseJsonCapped(response, maxBytes);
+  } finally {
+    clearTimeout(timeout);
+  }
+}
+
+async function fetchRegionalText(url, {
+  headers = {},
+  timeoutMs = 9000,
+  maxBytes = REGIONAL_MAX_RESPONSE_BYTES,
+} = {}) {
+  const controller = new AbortController();
+  const timeout = setTimeout(() => controller.abort(), timeoutMs);
+  try {
+    const response = await fetch(url, { signal: controller.signal, headers });
+    if (!response.ok) throw new Error(`Upstream returned ${response.status}`);
+    return readResponseTextCapped(response, maxBytes);
+  } finally {
+    clearTimeout(timeout);
+  }
+}
+
+export { fetchRegionalJson, fetchRegionalText };