Derive API path from frontend config URL

2026-08-25 16:53:58 +00:00
parent f79415d2f6
commit f6fb033eb8
3 changed files with 63 additions and 2 deletions
@@ -0,0 +1,50 @@
+import { readFileSync, writeFileSync } from "node:fs";
+
+const loaderPath = "src/components/loader.js";
+let source = readFileSync(loaderPath, "utf8");
+
+const upstreamApiPath = "`${webConfig.api_host}/${webConfig.abbr}`";
+const deploymentApiPath = "getApiPath(webConfig)";
+const helperMarker = "function getApiPath(webConfig) {";
+const insertBefore = "function sleep(ms) {";
+const occurrences = source.split(upstreamApiPath).length - 1;
+
+if (occurrences === 3 && !source.includes(helperMarker)) {
+    const helper = `function getApiPath(webConfig) {
+  if (import.meta.env.VITE_USE_MULTIHUB == "true") {
+    return \`${upstreamApiPath.slice(1, -1)}\`;
+  }
+
+  const configUrl = new URL(import.meta.env.VITE_CONFIG_URL);
+  const endpoint = "/client/config/global";
+  const pathname = configUrl.pathname.replace(/\\/+$/, "");
+  if (!pathname.endsWith(endpoint)) {
+    throw new Error("VITE_CONFIG_URL must end with /client/config/global.");
+  }
+
+  configUrl.pathname = pathname.slice(0, -endpoint.length) || "/";
+  configUrl.search = "";
+  configUrl.hash = "";
+  return configUrl.toString().replace(/\\/$/, "");
+}
+
+`;
+
+    if (!source.includes(insertBefore)) {
+        throw new Error("Cannot locate the API path helper insertion point.");
+    }
+
+    source = source.replace(insertBefore, helper + insertBefore);
+    source = source.replaceAll(upstreamApiPath, deploymentApiPath);
+    console.log("Use VITE_CONFIG_URL as the single-hub API path source.");
+} else if (occurrences === 0 && !/api_host[^;\n]{0,80}abbr/.test(source)) {
+    console.log("Upstream does not contain the known API path dependency; skip the patch.");
+} else {
+    throw new Error(`Unsupported upstream API path implementation (${occurrences} known references).`);
+}
+
+if (source.includes(upstreamApiPath) && !source.includes("VITE_USE_MULTIHUB")) {
+    throw new Error("The upstream API path dependency remains without a multihub fallback.");
+}
+
+writeFileSync(loaderPath, source);