pi-hole · bitigchi · Mar 2, 2024
diff --git a/scripts/pi-hole/js/formatter.js b/scripts/pi-hole/js/formatter.js
@@ -0,0 +1,17 @@
+/* Pi-hole: A black hole for Internet advertisements
+ *  (c) 2024 Pi-hole, LLC (https://pi-hole.net)
+ *  Network-wide ad blocking via your own hardware.
+ *
+ *  This file is copyright under the latest version of the EUPL.
+ *  Please see LICENSE file for your rights under this license. */
+
+/* global moment:false */
+
+Number.prototype.toPercent = function (fractionDigits = 0) {
+  const userLocale = navigator.language || 'en-US';
+  return new Intl.NumberFormat(userLocale, {
+    style: 'percent',
+    minimumFractionDigits: fractionDigits,
+    maximumFractionDigits: fractionDigits
+  }).format(this / 100);
+};
diff --git a/scripts/pi-hole/js/index.js b/scripts/pi-hole/js/index.js
@@ -7,6 +7,8 @@
 
 /* global utils:false, Chart:false */
 
+import 'formatter.js'
+
 // Define global variables
 var timeLineChart, clientsChart;
 var queryTypePieChart, forwardDestinationPieChart;
@@ -206,8 +208,8 @@ var customTooltips = function (context) {
   } else {
     // Calculate percentage X value depending on the tooltip's
     // width to avoid hanging arrow out on tooltip width changes
-    var arrowXpercent = ((100 / tooltipWidth) * arrowX).toFixed(1);
-    tooltipEl.querySelector(".arrow").style.left = arrowXpercent + "%";
+    var arrowXpercent = ((100 / tooltipWidth) * arrowX);
+    tooltipEl.querySelector(".arrow").style.left = `${arrowXpercent.toPercent(1)}`;
   }
 
   tooltipEl.style.opacity = 1;
@@ -694,14 +696,11 @@ function updateSummaryData(runOnce) {
       var textData = data[apiName];
       if (!FTLoffline) {
         // Only format as number if FTL is online
-        var formatter = new Intl.NumberFormat();
-
-        // Round to one decimal place and format locale-aware
-        var text = formatter.format(Math.round(data[apiName] * 10) / 10);
-        textData = idx === 2 && data[apiName] !== "to" ? text + "%" : text;
+        const roundedValue = Math.round(data[apiName] * 10) / 10;
+        const textData = idx === 2 && data[apiName] !== "to" ? roundedValue.toPercent(1) : roundedValue;
       }
 
-      if ($todayElement.text() !== textData && $todayElement.text() !== textData + "%") {
+      if ($todayElement.text() !== textData && $todayElement.text() !== `${textData}`) {
         $todayElement.addClass("glow");
         $todayElement.text(textData);
       }
@@ -738,32 +737,28 @@ function doughnutTooltip(tooltipLabel) {
   var label = " " + tooltipLabel.label;
   var itemPercentage;
 
-  // if we only show < 1% percent of all, show each item with two decimals
+  // If we only show < 1% percent of all, show each item with two decimals
   if (percentageTotalShown < 1) {
-    itemPercentage = tooltipLabel.parsed.toFixed(2);
+    itemPercentage = tooltipLabel.parsed.toPercent(2);
   } else {
-    // show with one decimal, but in case the item share is really small it could be rounded to 0.0
-    // we compensate for this
+    // Show with one decimal, but in case the item share is really small, it could be rounded to 0.0
+    // We compensate for this
     itemPercentage =
-      tooltipLabel.parsed.toFixed(1) === "0.0" ? "< 0.1" : tooltipLabel.parsed.toFixed(1);
+      tooltipLabel.parsed.toPercent(1) === "0.0" ? "< 0.1" : tooltipLabel.parsed.toPercent(1);
   }
 
-  // even if no doughnut slice is hidden, sometimes percentageTotalShown is slightly less then 100
-  // we therefore use 99.9 to decide if slices are hidden (we only show with 0.1 precision)
+  // Even if no doughnut slice is hidden, sometimes percentageTotalShown is slightly less than 100
+  // We therefore use 99.9 to decide if slices are hidden (we only show with 0.1 precision)
   if (percentageTotalShown > 99.9) {
     // All items shown
-    return label + ": " + itemPercentage + "%";
+    return `${label}: ${itemPercentage}`;
   } else {
-    // set percentageTotalShown again without rounding to account
-    // for cases where the total shown percentage would be <0.1% of all
+    // Set percentageTotalShown again without rounding to account
+    // for cases where the total shown percentage would be < 0.1% of all
     percentageTotalShown = tooltipLabel.chart._metasets[0].total;
     return (
-      label +
-      ":<br>&bull; " +
-      itemPercentage +
-      "% of all queries<br>&bull; " +
-      ((tooltipLabel.parsed * 100) / percentageTotalShown).toFixed(1) +
-      "% of shown items"
+      `${label}:<br>&bull; ${itemPercentage} of all queries` +
+      `<br>&bull; ${(tooltipLabel.parsed * 100 / percentageTotalShown).toPercent(1)} of shown items`
     );
   }
 }
@@ -917,7 +912,7 @@ $(function () {
                   percentage = (100 * blocked) / (permitted + blocked);
                 }
 
-                label += ": " + tooltipLabel.parsed.y + " (" + percentage.toFixed(1) + "%)";
+                label += `: ${tooltipLabel.parsed.y} (${percentage.toPercent(1)})`;
               } else {
                 label += ": " + tooltipLabel.parsed.y;
               }

diff --git a/scripts/pi-hole/js/utils.js b/scripts/pi-hole/js/utils.js
@@ -7,6 +7,8 @@
 
 /* global moment:false */
 
+import 'formatter.js'
+
 // Credit: https://stackoverflow.com/a/4835406
 function escapeHtml(text) {
   var map = {
@@ -354,10 +356,12 @@ function addTD(content) {
   return "<td>" + content + "</td> ";
 }
 
+}
 function colorBar(percentage, total, cssClass) {
-  var title = percentage.toFixed(1) + "% of " + total;
-  var bar = '<div class="progress-bar ' + cssClass + '" style="width: ' + percentage + '%"></div>';
-  return '<div class="progress progress-sm" title="' + title + '"> ' + bar + " </div>";
+  const percentFormatted = percentage.toPercent(1);
+  const title = `${percentFormatted} of ${total}`;
+  const bar = `<div class="progress-bar ${cssClass}" style="width: ${percentage}%"></div>`;
+  return `<div class="progress progress-sm" title="${title}"> ${bar} </div>`;
 }
 
 function checkMessages() {

diff --git a/scripts/pi-hole/php/sidebar.php b/scripts/pi-hole/php/sidebar.php
@@ -42,7 +42,12 @@
                         echo 'text-green-light';
                     }
                     if ($memory_usage > 0.0) {
-                        echo '"></i> Memory usage:&nbsp;&nbsp;'.sprintf('%.1f', 100.0 * $memory_usage).'&thinsp;%</span>';
+                        $locale = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : 'en_US';
+                        $formatter = new NumberFormatter($locale, NumberFormatter::PERCENT);
+                        $formatter->setAttribute(NumberFormatter::MIN_FRACTION_DIGITS, 1);
+                        $formatter->setAttribute(NumberFormatter::MAX_FRACTION_DIGITS, 1);
+                        $formattedPercent = $formatter->format($memory_usage);
+                        echo '"></i> Memory usage:&nbsp;&nbsp;' . $formattedPercent . '</span>';
                     } else {
                         echo '"></i> Memory usage:&nbsp;&nbsp; N/A</span>';
                     }