Address review comments

src/components/chart/statistics-chart.ts

@@ -30,6 +30,15 @@ import {
 import type { HomeAssistant } from "../../types";
 import "./ha-chart-base";
 
+export type ExtendedStatisticType = StatisticType | "state" | "sum_rel";
+
+export const statTypeMap: Record<ExtendedStatisticType, StatisticType> = {
+  mean: "mean",
+  min: "min",
+  max: "max",
+  sum: "sum",
+  sum_rel: "sum",
+};
 @customElement("statistics-chart")
 class StatisticsChart extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
@@ -42,7 +51,7 @@ class StatisticsChart extends LitElement {
 
   @property({ attribute: false }) public endTime?: Date;
 
-  @property({ type: Array }) public statTypes: Array<StatisticType> = [
+  @property({ type: Array }) public statTypes: Array<ExtendedStatisticType> = [
     "sum",
     "min",
     "mean",
@@ -307,7 +316,7 @@ class StatisticsChart extends LitElement {
         : this.statTypes;
 
       sortedTypes.forEach((type) => {
-        if (statisticsHaveType(stats, type)) {
+        if (statisticsHaveType(stats, statTypeMap[type])) {
           const band = drawBands && (type === "min" || type === "max");
           statTypes.push(type);
           statDataSets.push({
@@ -335,8 +344,14 @@ class StatisticsChart extends LitElement {
 
       let prevDate: Date | null = null;
       // Process chart data.
-      let initVal: number | null = null;
+      const initVal: Record<"sum" | "sum_rel", number | null> = {
-      let prevSum: number | null = null;
+        sum: null,
+        sum_rel: null,
+      };
+      const prevSum: Record<"sum" | "sum_rel", number | null> = {
+        sum: null,
+        sum_rel: null,
+      };
       stats.forEach((stat) => {
         const date = new Date(stat.start);
         if (prevDate === date) {
@@ -347,11 +362,11 @@ class StatisticsChart extends LitElement {
         statTypes.forEach((type) => {
           let val: number | null;
           if (type === "sum" || type === "sum_rel") {
-            if (initVal === null) {
+            if (initVal[type] === null) {
-              initVal = val = type === "sum_rel" ? 0 : stat.sum || 0;
+              initVal[type] = val = type === "sum_rel" ? 0 : stat.sum || 0;
-              prevSum = stat.sum;
+              prevSum[type] = stat.sum;
             } else {
-              val = initVal + ((stat.sum || 0) - prevSum!);
+              val = initVal[type]! + ((stat.sum || 0) - prevSum[type]!);
             }
           } else {
             val = stat[type];

src/data/recorder.ts

@@ -1,7 +1,7 @@
 import { computeStateName } from "../common/entity/compute_state_name";
 import { HomeAssistant } from "../types";
 
-export type StatisticType = "sum" | "sum_rel" | "min" | "max" | "mean";
+export type StatisticType = "sum" | "min" | "max" | "mean";
 
 export interface Statistics {
   [statisticId: string]: StatisticValue[];
@@ -201,13 +201,10 @@ export const calculateStatisticsSumGrowth = (
 export const statisticsHaveType = (
   stats: StatisticValue[],
   type: StatisticType
-) => {
+) => stats.some((stat) => stat[type] !== null);
-  type = type === "sum_rel" ? "sum" : type;
-  return stats.some((stat) => stat[type] !== null);
-};
 
 const mean_stat_types: readonly StatisticType[] = ["mean", "min", "max"];
-const sum_stat_types: readonly StatisticType[] = ["sum", "sum_rel"];
+const sum_stat_types: readonly StatisticType[] = ["sum"];
 
 export const statisticsMetaHasType = (
   metadata: StatisticsMetaData,

src/panels/lovelace/editor/config-elements/hui-statistics-graph-card-editor.ts

@@ -36,6 +36,7 @@ import {
   statisticsMetaHasType,
 } from "../../../../data/recorder";
 import { deepEqual } from "../../../../common/util/deep-equal";
+import { statTypeMap } from "../../../../components/chart/statistics-chart";
 
 const statTypeStruct = union([
   literal("sum"),
@@ -157,7 +158,7 @@ export class HuiStatisticsGraphCardEditor
                     disabled:
                       !metaDatas ||
                       !metaDatas?.every((metaData) =>
-                        statisticsMetaHasType(metaData, stat_type)
+                        statisticsMetaHasType(metaData, statTypeMap[stat_type])
                       ),
                   })),
                 },