Resolve edge E2E host routing in CI

scripts/edge-gateway-e2e.mjs

@@ -75,6 +75,63 @@ function normalizeBaseUrl(url) {
   return String(url || "").replace(/\/+$/, "");
 }
 
+function baseUrlWithHost(baseUrl, host) {
+  const url = new URL(normalizeBaseUrl(baseUrl));
+  url.hostname = host;
+  return normalizeBaseUrl(url.toString());
+}
+
+async function readDefaultGatewayHost() {
+  if (process.platform === "win32") {
+    return null;
+  }
+
+  try {
+    const routeTable = await fs.readFile("/proc/net/route", "utf8");
+    const route = routeTable
+      .split(/\r?\n/)
+      .map((line) => line.trim().split(/\s+/))
+      .find((fields) => fields[1] === "00000000" && /^[0-9A-Fa-f]{8}$/.test(fields[2] || ""));
+
+    if (!route) {
+      return null;
+    }
+
+    const gateway = route[2];
+    const octets = [
+      gateway.slice(6, 8),
+      gateway.slice(4, 6),
+      gateway.slice(2, 4),
+      gateway.slice(0, 2),
+    ].map((octet) => Number.parseInt(octet, 16));
+
+    if (octets.some((octet) => !Number.isInteger(octet)) || octets.every((octet) => octet === 0)) {
+      return null;
+    }
+
+    return octets.join(".");
+  } catch {
+    return null;
+  }
+}
+
+async function candidateApiBaseUrls(baseUrl) {
+  const normalized = normalizeBaseUrl(baseUrl);
+  const candidates = [normalized];
+  const url = new URL(normalized);
+
+  if (["localhost", "127.0.0.1", "::1"].includes(url.hostname)) {
+    const gatewayHost = await readDefaultGatewayHost();
+    if (gatewayHost) {
+      candidates.push(baseUrlWithHost(normalized, gatewayHost));
+    }
+
+    candidates.push(baseUrlWithHost(normalized, "host.docker.internal"));
+  }
+
+  return [...new Set(candidates)];
+}
+
 async function waitForCondition(predicate, { timeoutMs = 30_000, intervalMs = 500, message = "Timed out" } = {}) {
   const deadline = Date.now() + timeoutMs;
 
@@ -97,25 +154,29 @@ async function ensureComposeServices(rootDir, composeProject) {
 }
 
 async function waitForApiReady(baseUrl, attempts = 60) {
-  const root = normalizeBaseUrl(baseUrl);
+  const candidates = await candidateApiBaseUrls(baseUrl);
   let lastError = "API never responded";
 
   for (let attempt = 0; attempt < attempts; attempt += 1) {
-    try {
-      const response = await fetch(`${root}/ping`);
-      if (response.ok) {
-        return;
-      }
+    for (const root of candidates) {
+      try {
+        const response = await fetch(`${root}/ping`, {
+          signal: AbortSignal.timeout(1000),
+        });
+        if (response.ok) {
+          return root;
+        }
 
-      lastError = `Unexpected ping status ${response.status}`;
-    } catch (error) {
-      lastError = error instanceof Error ? error.message : String(error);
+        lastError = `${root}/ping returned HTTP ${response.status}`;
+      } catch (error) {
+        lastError = `${root}/ping failed: ${error instanceof Error ? error.message : String(error)}`;
+      }
     }
 
     await new Promise((resolve) => setTimeout(resolve, 1000));
   }
 
-  throw new Error(`API did not become ready at ${root}/ping: ${lastError}`);
+  throw new Error(`API did not become ready at ${candidates.map((candidate) => `${candidate}/ping`).join(", ")}: ${lastError}`);
 }
 
 function parseLastJsonLine(output) {
@@ -345,7 +406,7 @@ async function main() {
   const containerName = `truckwash-edge-e2e-${runId}`;
   const configDir = path.join(rootDir, ".tmp", "edge-gateway-e2e", runId);
   const configFilePath = path.join(configDir, DEFAULT_CONFIG_FILE_NAME);
-  const baseUrl = process.env.EDGE_GATEWAY_E2E_BASE_URL || DEFAULT_HOST_API_URL;
+  let baseUrl = process.env.EDGE_GATEWAY_E2E_BASE_URL || DEFAULT_HOST_API_URL;
   const composeProject =
     process.env.EDGE_GATEWAY_E2E_COMPOSE_PROJECT
     || path.basename(rootDir);
@@ -357,7 +418,7 @@ async function main() {
 
   try {
     await ensureComposeServices(rootDir, composeProject);
-    await waitForApiReady(baseUrl);
+    baseUrl = await waitForApiReady(baseUrl);
 
     fixture = await runPhpFixture(rootDir, composeProject, "create");
     const authToken = String(fixture.auth_token || "");