Stats Page Foundation with Chart.js

frontend/src/Indexer/Stats/Stats.js

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+import PropTypes from 'prop-types';
+import React from 'react';
+import BarChart from 'Components/Chart/BarChart';
+import DoughnutChart from 'Components/Chart/DoughnutChart';
+import LoadingIndicator from 'Components/Loading/LoadingIndicator';
+import PageContent from 'Components/Page/PageContent';
+import PageToolbar from 'Components/Page/Toolbar/PageToolbar';
+import getErrorMessage from 'Utilities/Object/getErrorMessage';
+import styles from './Stats.css';
+
+function getAverageResponseTimeData(indexerStats) {
+  const data = indexerStats.map((indexer) => {
+    return {
+      label: indexer.indexerName,
+      value: indexer.averageResponseTime
+    };
+  });
+
+  return data;
+}
+
+function getTotalRequestsData(indexerStats) {
+  const data = indexerStats.map((indexer) => {
+    return {
+      label: indexer.indexerName,
+      value: indexer.numberOfQueries
+    };
+  });
+
+  return data;
+}
+
+function Stats(props) {
+  const {
+    items,
+    isFetching,
+    isPopulated,
+    error
+  } = props;
+
+  const isLoaded = !!(!error && isPopulated && items.length);
+
+  return (
+    <PageContent>
+      <PageToolbar />
+      {
+        isFetching && !isPopulated &&
+          <LoadingIndicator />
+      }
+
+      {
+        !isFetching && !!error &&
+          <div className={styles.errorMessage}>
+            {getErrorMessage(error, 'Failed to load indexer stats from API')}
+          </div>
+      }
+
+      {
+        isLoaded &&
+          <div>
+            <div className={styles.fullWidthChart}>
+              <BarChart
+                data={getAverageResponseTimeData(items)}
+                title='Average Response Times (ms)'
+              />
+            </div>
+            <div className={styles.halfWidthChart}>
+              <DoughnutChart
+                data={getTotalRequestsData(items)}
+                title='Total Indexer Queries'
+              />
+            </div>
+          </div>
+      }
+    </PageContent>
+  );
+}
+
+Stats.propTypes = {
+  items: PropTypes.arrayOf(PropTypes.object).isRequired,
+  isFetching: PropTypes.bool.isRequired,
+  isPopulated: PropTypes.bool.isRequired,
+  error: PropTypes.object,
+  data: PropTypes.object
+};
+
+export default Stats;