fix(web): fix inconsistency between model recommendation charts and display charts (#1615)

Co-authored-by: hzh97 <2976151305@qq.com>
Co-authored-by: aries_ckt <916701291@qq.com>

web/components/chart/autoChart/charts/util.ts

@@ -1,3 +1,7 @@
+import { Datum, FieldInfo } from '@antv/ava';
+import { hasSubset, intersects } from '../advisor/utils';
+import { uniq } from 'lodash';
+
 type BasicDataPropertyForAdvice = any;
 
 /**
@@ -14,3 +18,35 @@ export function processDateEncode(field: string, dataProps: BasicDataPropertyFor
   }
   return field;
 }
+
+export function findOrdinalField(fields: FieldInfo[]) {
+  return fields.find((field) => field.levelOfMeasurements && intersects(field.levelOfMeasurements, ['Time', 'Ordinal']));
+}
+
+export function findNominalField(fields: FieldInfo[]) {
+  return fields.find((field) => field.levelOfMeasurements && hasSubset(field.levelOfMeasurements, ['Nominal']));
+}
+
+// 识别 x 轴是否只有一条数据（绘制的折线图是否只有一个点）
+export const isUniqueXValue = ({ data, xField }: { xField: string; data: Datum[] }): boolean => {
+  const uniqXValues = uniq(data.map((datum) => datum[xField]));
+  return uniqXValues.length <= 1;
+};
+
+/** 获取线宽：当只有一条数据时，折线图需要特殊设置线宽，否则仅绘制 1px，看不见 */
+export const getLineSize = (
+  datum: Datum,
+  allData: Datum[],
+  fields: {
+    field4Split?: FieldInfo;
+    field4X?: FieldInfo;
+  },
+) => {
+  const { field4Split, field4X } = fields;
+  if (field4Split?.name && field4X?.name) {
+    const seriesValue = datum[field4Split.name];
+    const splitData = allData.filter((item) => field4Split.name && item[field4Split.name] === seriesValue);
+    return isUniqueXValue({ data: splitData, xField: field4X.name }) ? 5 : undefined;
+  }
+  return field4X?.name && isUniqueXValue({ data: allData, xField: field4X.name }) ? 5 : undefined;
+};