[Data Explorer] Clean out angular contents in Discover (#4468)

* [Data Explorer] Clean out angular contents in Discover

Issue Resolve
#4459

Signed-off-by: ananzh <[email protected]>

* remove obsolete snapshot

Signed-off-by: ananzh <[email protected]>

---------

Signed-off-by: ananzh <[email protected]>

src/plugins/discover/public/application/components/chart/point_series.ts

@@ -0,0 +1,122 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Any modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { uniq } from 'lodash';
+import { Duration, Moment } from 'moment';
+import { Unit } from '@elastic/datemath';
+
+import { SerializedFieldFormat } from '../../../../../expressions/common/types';
+
+export interface Column {
+  id: string;
+  name: string;
+}
+
+export interface Row {
+  [key: string]: number | 'NaN';
+}
+
+export interface Table {
+  columns: Column[];
+  rows: Row[];
+}
+
+interface HistogramParams {
+  date: true;
+  interval: Duration;
+  intervalOpenSearchValue: number;
+  intervalOpenSearchUnit: Unit;
+  format: string;
+  bounds: {
+    min: Moment;
+    max: Moment;
+  };
+}
+export interface Dimension {
+  accessor: 0 | 1;
+  format: SerializedFieldFormat<{ pattern: string }>;
+}
+
+export interface Dimensions {
+  x: Dimension & { params: HistogramParams };
+  y: Dimension;
+}
+
+interface Ordered {
+  date: true;
+  interval: Duration;
+  intervalOpenSearchUnit: string;
+  intervalOpenSearchValue: number;
+  min: Moment;
+  max: Moment;
+}
+export interface Chart {
+  values: Array<{
+    x: number;
+    y: number;
+  }>;
+  xAxisOrderedValues: number[];
+  xAxisFormat: Dimension['format'];
+  xAxisLabel: Column['name'];
+  yAxisLabel?: Column['name'];
+  ordered: Ordered;
+}
+
+export const buildPointSeriesData = (table: Table, dimensions: Dimensions) => {
+  const { x, y } = dimensions;
+  const xAccessor = table.columns[x.accessor].id;
+  const yAccessor = table.columns[y.accessor].id;
+  const chart = {} as Chart;
+
+  chart.xAxisOrderedValues = uniq(table.rows.map((r) => r[xAccessor] as number));
+  chart.xAxisFormat = x.format;
+  chart.xAxisLabel = table.columns[x.accessor].name;
+
+  const { intervalOpenSearchUnit, intervalOpenSearchValue, interval, bounds } = x.params;
+  chart.ordered = {
+    date: true,
+    interval,
+    intervalOpenSearchUnit,
+    intervalOpenSearchValue,
+    min: bounds.min,
+    max: bounds.max,
+  };
+
+  chart.yAxisLabel = table.columns[y.accessor].name;
+
+  chart.values = table.rows
+    .filter((row) => row && row[yAccessor] !== 'NaN')
+    .map((row) => ({
+      x: row[xAccessor] as number,
+      y: row[yAccessor] as number,
+    }));
+
+  return chart;
+};