Reduce dev proxy response logging noise

scripts/dev-server.mjs

@@ -18,6 +18,7 @@ import { tmpdir } from "node:os";
 const PUBLIC_PORT = 8080;
 const MODERNJS_PORT = 8081;
 const API_TARGET = process.env.API_TARGET || "https://flights.test.aeroflot.ru";
+const DEBUG_PROXY_BODY = process.env.DEBUG_PROXY_BODY === "1";
 
 // Shared cookie jar so the Ngenix WAF cookie challenge (`ngenix_valid` +
 // 307-to-self) only runs once per dev-server lifetime, not per request.
@@ -138,9 +139,7 @@ app.use(["/api", "/flights"], (req, res) => {
 });
 
 function execCurlWithFallback(buildArgs, extraArgs, res) {
-  console.log(`execCurlWithFallback called`);
   runCurl([...extraArgs, ...buildArgs(true)], (direct) => {
-    console.log(`execCurlWithFallback: direct result, isSuccessful=${isSuccessfulUpstream(direct)}`);
     if (isSuccessfulUpstream(direct)) {
       respondWithCurlResult(direct, res);
       return;
@@ -154,10 +153,13 @@ function execCurlWithFallback(buildArgs, extraArgs, res) {
 }
 
 function runCurl(args, cb) {
-  console.log(`runCurl: args=${JSON.stringify(args).substring(0, 200)}...`);
   execFile("/usr/bin/curl", args, { maxBuffer: 10 * 1024 * 1024, timeout: 30000 }, (err, stdout, stderr) => {
-    console.log(`runCurl callback: err=${!!err}, stdout length=${stdout ? stdout.length : 0}, stderr length=${stderr ? stderr.length : 0}`);
-    console.log(`runCurl stdout preview: ${stdout ? stdout.substring(0, 200) : 'null'}`);
+    if (err) {
+      console.warn(`curl failed: ${err.message}`);
+    }
+    if (stderr) {
+      console.warn(`curl stderr: ${stderr.substring(0, 300)}`);
+    }
     cb({ err, stdout: stdout ?? "" });
   });
 }
@@ -171,7 +173,6 @@ function isSuccessfulUpstream({ err, stdout }) {
 }
 
 function respondWithCurlResult({ err, stdout }, res) {
-  console.log(`respondWithCurlResult: err=${!!err}, stdout length=${stdout ? stdout.length : 0}`);
   if (err) {
     res.status(502).json({ error: err.message });
     return;
@@ -189,8 +190,12 @@ function respondWithCurlResult({ err, stdout }, res) {
 
   const isJson = body.trimStart().startsWith("{") || body.trimStart().startsWith("[");
 
-  console.log(`isJson=${isJson}, status=${status}, body length=${body.length}`);
-  console.log(`body preview: ${body.substring(0, 200)}`);
+  console.log(
+    `proxy response: status=${status}, content=${isJson ? "json" : "html"}, bodyLength=${body.length}, ${summarizeBody(body)}`,
+  );
+  if (DEBUG_PROXY_BODY) {
+    console.log(`body preview: ${body.substring(0, 500)}`);
+  }
 
   res.status(status);
   res.set("Content-Type", isJson ? "application/json" : "text/html");
@@ -198,6 +203,32 @@ function respondWithCurlResult({ err, stdout }, res) {
   res.send(body);
 }
 
+function summarizeBody(body) {
+  const trimmed = body.trimStart();
+  if (!trimmed) return "body=empty";
+
+  try {
+    const parsed = JSON.parse(trimmed);
+    if (parsed && typeof parsed === "object" && !Array.isArray(parsed)) {
+      if (typeof parsed.days === "string") {
+        const available = [...parsed.days].filter((d) => d === "1").length;
+        return `daysLength=${parsed.days.length}, availableDays=${available}`;
+      }
+      if (parsed.data && Array.isArray(parsed.data.routes)) {
+        return `routes=${parsed.data.routes.length}`;
+      }
+      return `jsonKeys=${Object.keys(parsed).slice(0, 5).join(",")}`;
+    }
+    if (Array.isArray(parsed)) {
+      return `jsonArrayLength=${parsed.length}`;
+    }
+  } catch {
+    // fall through to non-JSON summary
+  }
+
+  return `bodyPreview=${trimmed.substring(0, 80).replace(/\s+/g, " ")}`;
+}
+
 // --- Everything else → Modern.js ---
 const modernProxy = createProxyMiddleware({
   target: `http://localhost:${MODERNJS_PORT}`,