From e5f37b003d93a17c2a9958697269b2d3228d8830 Mon Sep 17 00:00:00 2001
From: Adam Soltys <adam@coinos.io>
Date: Wed, 4 Mar 2026 23:06:35 -0800
Subject: tuning

---
 perf-test.ts | 146 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 perf-test.ts

(limited to 'perf-test.ts')

diff --git a/perf-test.ts b/perf-test.ts
new file mode 100644
index 00000000..082d9113
--- /dev/null
+++ b/perf-test.ts
@@ -0,0 +1,146 @@
+import { chromium } from "@playwright/test";
+
+const BASE = "http://localhost:5173";
+
+(async () => {
+  const browser = await chromium.launch({ headless: true });
+  const context = await browser.newContext();
+  const page = await context.newPage();
+
+  // Collect all network requests during navigation
+  const requests: { url: string; duration: number; size: number }[] = [];
+
+  // Login as bob
+  console.log("=== Logging in as bob ===");
+  await page.goto(`${BASE}/login`);
+  await page.fill('input[name="username"]', "bob");
+  await page.fill('input[name="password"]', "pw");
+  await page.click('button[type="submit"]');
+  await page.waitForURL("**/bob", { timeout: 10000 });
+  console.log("Logged in, at:", page.url());
+
+  // Wait for page to fully settle
+  await page.waitForTimeout(2000);
+
+  // Now measure navigation to /invoice/lnurl
+  console.log("\n=== Navigating to /invoice/lnurl ===");
+
+  // Enable request interception to measure timings
+  const navRequests: { url: string; method: string; duration: number }[] = [];
+
+  page.on("request", (req) => {
+    (req as any)._startTime = Date.now();
+  });
+
+  page.on("response", (res) => {
+    const req = res.request();
+    const start = (req as any)._startTime;
+    if (start) {
+      navRequests.push({
+        url: req.url().replace(BASE, ""),
+        method: req.method(),
+        duration: Date.now() - start,
+      });
+    }
+  });
+
+  // Take screenshot before navigation
+  await page.screenshot({ path: "/tmp/perf-before.png" });
+
+  const navStart = Date.now();
+
+  // Click the Receive button on the first account (custodial/spending)
+  const receiveBtn = page.locator('[data-testid="account-receive"]').first();
+  const receiveHref = await receiveBtn.locator("..").getAttribute("href");
+  console.log("Receive link href:", receiveHref);
+
+  await receiveBtn.click();
+
+  // Wait for the invoice page to load
+  await page.waitForURL("**/invoice/**", { timeout: 10000 });
+  const urlReady = Date.now() - navStart;
+  console.log(`URL changed in ${urlReady}ms`);
+
+  // Wait for QR to appear
+  try {
+    await page.waitForSelector('.invoice img[src]', { timeout: 5000 });
+    const qrReady = Date.now() - navStart;
+    console.log(`QR img element appeared in ${qrReady}ms`);
+  } catch {
+    console.log("QR img not found within 5s");
+  }
+
+  // Check if QR image has actually loaded (naturalWidth > 0)
+  try {
+    await page.waitForFunction(
+      () => {
+        const img = document.querySelector(".invoice img") as HTMLImageElement;
+        return img && img.naturalWidth > 0;
+      },
+      { timeout: 5000 }
+    );
+    const qrLoaded = Date.now() - navStart;
+    console.log(`QR image fully loaded in ${qrLoaded}ms`);
+  } catch {
+    console.log("QR image did not fully load within 5s");
+  }
+
+  const totalTime = Date.now() - navStart;
+
+  await page.screenshot({ path: "/tmp/perf-after.png" });
+
+  console.log(`\nTotal navigation time: ${totalTime}ms`);
+  console.log("\n=== Network requests during navigation ===");
+  for (const r of navRequests.sort((a, b) => b.duration - a.duration)) {
+    console.log(`  ${r.method} ${r.url} - ${r.duration}ms`);
+  }
+
+  // Now measure a second navigation (back and forth) to see cached behavior
+  console.log("\n=== Going back to profile ===");
+  navRequests.length = 0;
+  await page.goBack();
+  await page.waitForTimeout(1000);
+
+  console.log("\n=== Second navigation to /invoice/lnurl ===");
+  navRequests.length = 0;
+  const nav2Start = Date.now();
+  await receiveBtn.click();
+  await page.waitForURL("**/invoice/**", { timeout: 10000 });
+  const url2Ready = Date.now() - nav2Start;
+  console.log(`URL changed in ${url2Ready}ms`);
+
+  try {
+    await page.waitForFunction(
+      () => {
+        const img = document.querySelector(".invoice img") as HTMLImageElement;
+        return img && img.naturalWidth > 0;
+      },
+      { timeout: 5000 }
+    );
+    const qr2Loaded = Date.now() - nav2Start;
+    console.log(`QR image fully loaded in ${qr2Loaded}ms`);
+  } catch {
+    console.log("QR image did not fully load within 5s");
+  }
+
+  await page.screenshot({ path: "/tmp/perf-after2.png" });
+
+  console.log(`\nTotal 2nd navigation time: ${Date.now() - nav2Start}ms`);
+  console.log("\n=== Network requests during 2nd navigation ===");
+  for (const r of navRequests.sort((a, b) => b.duration - a.duration)) {
+    console.log(`  ${r.method} ${r.url} - ${r.duration}ms`);
+  }
+
+  // Also capture performance entries
+  const perfEntries = await page.evaluate(() => {
+    return performance.getEntriesByType("navigation").map((e: any) => ({
+      name: e.name,
+      duration: e.duration,
+      domContentLoaded: e.domContentLoadedEventEnd - e.startTime,
+      loadEvent: e.loadEventEnd - e.startTime,
+    }));
+  });
+  console.log("\n=== Performance entries ===", perfEntries);
+
+  await browser.close();
+})();
-- 
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