From 29fc1978d56d6e5b087cf78086796c910119ee78 Mon Sep 17 00:00:00 2001
From: Tiyatrotist <179411334+Tiyatrotist@users.noreply.github.com>
Date: Sun, 27 Sep 2026 08:57:07 +0300
Subject: [PATCH] feat: add shareable compare demo link

---
 assets/profiler-compare.js | 13 +++++++++----
 assets/profiler-ui.js      |  6 ++++--
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/assets/profiler-compare.js b/assets/profiler-compare.js
index fe3dfd90..bd8c0357 100644
--- a/assets/profiler-compare.js
+++ b/assets/profiler-compare.js
@@ -707,12 +707,17 @@
   }
 
   // ── Init ────────────────────────────────────────────────────────────────
-  wireSlot('A', dropA, fileA, nameAEl);
-  wireSlot('B', dropB, fileB, nameBEl);
-  sampleBtn.addEventListener('click', function () {
+  function loadSampleComparison() {
     setSlot('A', E.parseCSV(buildSample('A')), 'sample-baseline.csv', dropA, nameAEl);
     setSlot('B', E.parseCSV(buildSample('B')), 'sample-current.csv', dropB, nameBEl);
-  });
+  }
+
+  wireSlot('A', dropA, fileA, nameAEl);
+  wireSlot('B', dropB, fileB, nameBEl);
+  sampleBtn.addEventListener('click', loadSampleComparison);
+  if (new URLSearchParams(window.location.search).get('demo') === 'compare') {
+    loadSampleComparison();
+  }
   downloadHtmlBtn.addEventListener('click', downloadCompareHtmlReport);
   copyJsonBtn.addEventListener('click', copyCompareResultAsJSON);
 })();
diff --git a/assets/profiler-ui.js b/assets/profiler-ui.js
index d964e6f1..18e63369 100644
--- a/assets/profiler-ui.js
+++ b/assets/profiler-ui.js
@@ -793,9 +793,11 @@
     }
   }
 
-  // Shareable demo link: profiler.html?demo loads the sample automatically.
+  // Shareable demo link: profiler.html?demo loads the profile sample automatically.
+  // Reserve ?demo=compare for the two-dataset sample handled by profiler-compare.js.
   // Placed last so all declarations above (e.g. GRADE_COLOR) are initialized.
-  if (/(?:\?|&)demo\b/.test(window.location.search)) {
+  var demoMode = new URLSearchParams(window.location.search).get('demo');
+  if (demoMode !== null && demoMode !== 'compare') {
     runText(buildSampleCSV(), 'sample-health-data.csv');
   }
 })();