Show uutils.github.io build commit on the playground page

Alongside the coreutils WASM commit, record the website repo's
commit/date in version.js (SITE_VERSION) and display it next to
the existing build info on the playground.

.github/workflows/website.yml

@@ -154,14 +154,24 @@ jobs:
           commit_hash=$(git rev-parse HEAD)
           commit_short=$(git rev-parse --short HEAD)
           commit_date=$(git show -s --format=%cI HEAD)
+          # Record the uutils.github.io commit the site was built from
+          site_hash=$(git -C ../uutils.github.io rev-parse HEAD)
+          site_short=$(git -C ../uutils.github.io rev-parse --short HEAD)
+          site_date=$(git -C ../uutils.github.io show -s --format=%cI HEAD)
           {
             echo "const UUTILS_WASM_VERSION = {"
             echo "  commit: \"${commit_hash}\","
             echo "  short: \"${commit_short}\","
             echo "  date: \"${commit_date}\""
             echo "};"
+            echo "const SITE_VERSION = {"
+            echo "  commit: \"${site_hash}\","
+            echo "  short: \"${site_short}\","
+            echo "  date: \"${site_date}\""
+            echo "};"
           } > ../uutils.github.io/static/wasm/version.js
           echo "uutils WASM build: ${commit_short} (${commit_date})"
+          echo "site build: ${site_short} (${site_date})"
         fi
 
     - name: Run Zola

content/playground.md

@@ -44,13 +44,24 @@ template = "page.html"
         }).join(" ");
       }
     }
-    // Show the uutils commit that was used to build the WASM binary
-    if (typeof UUTILS_WASM_VERSION !== "undefined") {
-      var el = document.getElementById("playground-version");
-      var date = UUTILS_WASM_VERSION.date.split("T")[0];
-      var url = "https://github.com/uutils/coreutils/commit/" + UUTILS_WASM_VERSION.commit;
-      el.innerHTML = 'Built from uutils/coreutils <a href="' + url + '"><code>' +
-        UUTILS_WASM_VERSION.short + '</code></a> (' + date + ')';
+    // Show the uutils commit that was used to build the WASM binary,
+    // and the uutils.github.io commit the site itself was built from.
+    var el = document.getElementById("playground-version");
+    if (el) {
+      var parts = [];
+      if (typeof UUTILS_WASM_VERSION !== "undefined") {
+        var date = UUTILS_WASM_VERSION.date.split("T")[0];
+        var url = "https://github.com/uutils/coreutils/commit/" + UUTILS_WASM_VERSION.commit;
+        parts.push('Built from uutils/coreutils <a href="' + url + '"><code>' +
+          UUTILS_WASM_VERSION.short + '</code></a> (' + date + ')');
+      }
+      if (typeof SITE_VERSION !== "undefined") {
+        var siteDate = SITE_VERSION.date.split("T")[0];
+        var siteUrl = "https://github.com/uutils/uutils.github.io/commit/" + SITE_VERSION.commit;
+        parts.push('site <a href="' + siteUrl + '"><code>' +
+          SITE_VERSION.short + '</code></a> (' + siteDate + ')');
+      }
+      el.innerHTML = parts.join(' &middot; ');
     }
   });
 </script>