feat: add metric name for big number chart types #33013 (#33099)

Co-authored-by: Fardin Mustaque <fardinmustaque@Fardins-Mac-mini.local>

superset-frontend/plugins/plugin-chart-echarts/src/BigNumber/utils.ts

@@ -22,6 +22,10 @@ import utc from 'dayjs/plugin/utc';
 import {
   getTimeFormatter,
   getTimeFormatterForGranularity,
+  isAdhocMetricSimple,
+  isSavedMetric,
+  Metric,
+  QueryFormMetric,
   SMART_DATE_ID,
   TimeGranularity,
 } from '@superset-ui/core';
@@ -47,3 +51,43 @@ export const getDateFormatter = (
   timeFormat === SMART_DATE_ID
     ? getTimeFormatterForGranularity(granularity)
     : getTimeFormatter(timeFormat ?? fallbackFormat);
+
+export function getOriginalLabel(
+  metric: QueryFormMetric,
+  metrics: Metric[] = [],
+): string {
+  const metricLabel = typeof metric === 'string' ? metric : metric.label || '';
+
+  if (isSavedMetric(metric)) {
+    const metricEntry = metrics.find(m => m.metric_name === metric);
+    return (
+      metricEntry?.verbose_name ||
+      metricEntry?.metric_name ||
+      metric ||
+      'Unknown Metric'
+    );
+  }
+
+  if (isAdhocMetricSimple(metric)) {
+    const column = metric.column || {};
+    const columnName = column.column_name || 'unknown_column';
+    const verboseName = column.verbose_name || columnName;
+    const aggregate = metric.aggregate || 'UNKNOWN';
+    return metric.hasCustomLabel && metric.label
+      ? metric.label
+      : `${aggregate}(${verboseName})`;
+  }
+
+  if (
+    typeof metric === 'object' &&
+    'expressionType' in metric &&
+    metric.expressionType === 'SQL' &&
+    'sqlExpression' in metric
+  ) {
+    return metric.hasCustomLabel && metric.label
+      ? metric.label
+      : metricLabel || 'Custom Metric';
+  }
+
+  return metricLabel || 'Unknown Metric';
+}