Add `statistics-graph-card` (#9479)

* Add `statistics-graph-card`

* Make variable names clearer

src/components/chart/state-history-chart-line.ts

@@ -6,12 +6,17 @@ import { LineChartEntity, LineChartState } from "../../data/history";
 import { HomeAssistant } from "../../types";
 import "./ha-chart-base";
 
+const safeParseFloat = (value) => {
+  const parsed = parseFloat(value);
+  return isFinite(parsed) ? parsed : null;
+};
+
 class StateHistoryChartLine extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
   @property({ attribute: false }) public data: LineChartEntity[] = [];
 
-  @property({ type: Boolean }) public names = false;
+  @property() public names: boolean | Record<string, string> = false;
 
   @property() public unit?: string;
 
@@ -122,21 +127,15 @@ class StateHistoryChartLine extends LitElement {
       return;
     }
 
-    function safeParseFloat(value) {
-      const parsed = parseFloat(value);
-      return isFinite(parsed) ? parsed : null;
-    }
-
     endTime =
       this.endTime ||
       // Get the highest date from the last date of each device
       new Date(
-        Math.max.apply(
-          null,
-          deviceStates.map((devSts) =>
+        Math.max(
+          ...deviceStates.map((devSts) =>
             new Date(
               devSts.states[devSts.states.length - 1].last_changed
-            ).getMilliseconds()
+            ).getTime()
           )
         )
       );

src/components/chart/state-history-chart-timeline.ts

@@ -79,7 +79,7 @@ export class StateHistoryChartTimeline extends LitElement {
 
   @property({ attribute: false }) public data: TimelineEntity[] = [];
 
-  @property({ type: Boolean }) public names = false;
+  @property() public names: boolean | Record<string, string> = false;
 
   @property() public unit?: string;
 

src/components/chart/state-history-charts.ts

@@ -10,7 +10,6 @@ import { customElement, property } from "lit/decorators";
 import { isComponentLoaded } from "../../common/config/is_component_loaded";
 import { HistoryResult } from "../../data/history";
 import type { HomeAssistant } from "../../types";
-import "../ha-circular-progress";
 import "./state-history-chart-line";
 import "./state-history-chart-timeline";
 

src/components/chart/statistics-chart.ts

@@ -0,0 +1,308 @@
+import type {
+  ChartData,
+  ChartDataset,
+  ChartOptions,
+  ChartType,
+} from "chart.js";
+import {
+  css,
+  CSSResultGroup,
+  html,
+  LitElement,
+  PropertyValues,
+  TemplateResult,
+} from "lit";
+import { customElement, property, state } from "lit/decorators";
+import { getColorByIndex } from "../../common/color/colors";
+import { isComponentLoaded } from "../../common/config/is_component_loaded";
+import { computeStateName } from "../../common/entity/compute_state_name";
+import {
+  Statistics,
+  statisticsHaveType,
+  StatisticType,
+} from "../../data/history";
+import type { HomeAssistant } from "../../types";
+import "./ha-chart-base";
+
+@customElement("statistics-chart")
+class StatisticsChart extends LitElement {
+  @property({ attribute: false }) public hass!: HomeAssistant;
+
+  @property({ attribute: false }) public statisticsData!: Statistics;
+
+  @property() public names: boolean | Record<string, string> = false;
+
+  @property({ attribute: false }) public endTime?: Date;
+
+  @property({ type: Array }) public statTypes: Array<StatisticType> = [
+    "sum",
+    "min",
+    "max",
+    "mean",
+  ];
+
+  @property() public chartType: ChartType = "line";
+
+  @property({ type: Boolean }) public isLoadingData = false;
+
+  @state() private _chartData?: ChartData;
+
+  @state() private _chartOptions?: ChartOptions;
+
+  protected shouldUpdate(changedProps: PropertyValues): boolean {
+    return !(changedProps.size === 1 && changedProps.has("hass"));
+  }
+
+  public willUpdate(changedProps: PropertyValues) {
+    if (!this.hasUpdated) {
+      this._createOptions();
+    }
+    if (changedProps.has("statisticsData")) {
+      this._generateData();
+    }
+  }
+
+  protected render(): TemplateResult {
+    if (!isComponentLoaded(this.hass, "history")) {
+      return html`<div class="info">
+        ${this.hass.localize("ui.components.history_charts.history_disabled")}
+      </div>`;
+    }
+
+    if (this.isLoadingData && !this.statisticsData) {
+      return html`<div class="info">
+        ${this.hass.localize(
+          "ui.components.statistics_charts.loading_statistics"
+        )}
+      </div>`;
+    }
+
+    if (!this.statisticsData || !Object.keys(this.statisticsData).length) {
+      return html`<div class="info">
+        ${this.hass.localize(
+          "ui.components.statistics_charts.no_statistics_found"
+        )}
+      </div>`;
+    }
+
+    return html`
+      <ha-chart-base
+        .data=${this._chartData}
+        .options=${this._chartOptions}
+        .chartType=${this.chartType}
+      ></ha-chart-base>
+    `;
+  }
+
+  private _createOptions() {
+    this._chartOptions = {
+      parsing: false,
+      animation: false,
+      scales: {
+        x: {
+          type: "time",
+          adapters: {
+            date: {
+              locale: this.hass.locale,
+            },
+          },
+          ticks: {
+            maxRotation: 0,
+            sampleSize: 5,
+            autoSkipPadding: 20,
+            major: {
+              enabled: true,
+            },
+            font: (context) =>
+              context.tick && context.tick.major
+                ? ({ weight: "bold" } as any)
+                : {},
+          },
+          time: {
+            tooltipFormat: "datetimeseconds",
+          },
+        },
+        y: {
+          ticks: {
+            maxTicksLimit: 7,
+          },
+        },
+      },
+      plugins: {
+        tooltip: {
+          mode: "nearest",
+          callbacks: {
+            label: (context) => `${context.dataset.label}: ${context.parsed.y}`,
+          },
+        },
+        filler: {
+          propagate: true,
+        },
+        legend: {
+          display: false,
+          labels: {
+            usePointStyle: true,
+          },
+        },
+      },
+      hover: {
+        mode: "nearest",
+      },
+      elements: {
+        line: {
+          tension: 0.4,
+          borderWidth: 1.5,
+        },
+        point: {
+          hitRadius: 5,
+        },
+      },
+    };
+  }
+
+  private _generateData() {
+    let colorIndex = 0;
+    const statisticsData = Object.values(this.statisticsData);
+    const totalDataSets: ChartDataset<"line">[] = [];
+    let endTime: Date;
+
+    if (statisticsData.length === 0) {
+      return;
+    }
+
+    endTime =
+      this.endTime ||
+      // Get the highest date from the last date of each statistic
+      new Date(
+        Math.max(
+          ...statisticsData.map((stats) =>
+            new Date(stats[stats.length - 1].start).getTime()
+          )
+        )
+      );
+
+    if (endTime > new Date()) {
+      endTime = new Date();
+    }
+
+    const names = this.names || {};
+    statisticsData.forEach((stats) => {
+      const firstStat = stats[0];
+      let name = names[firstStat.statistic_id];
+      if (!name) {
+        const entityState = this.hass.states[firstStat.statistic_id];
+        if (entityState) {
+          name = computeStateName(entityState);
+        } else {
+          name = firstStat.statistic_id;
+        }
+      }
+      // array containing [value1, value2, etc]
+      let prevValues: Array<number | null> | null = null;
+
+      // The datasets for the current statistic
+      const statDataSets: ChartDataset<"line">[] = [];
+
+      const pushData = (
+        timestamp: Date,
+        dataValues: Array<number | null> | null
+      ) => {
+        if (!dataValues) return;
+        if (timestamp > endTime) {
+          // Drop datapoints that are after the requested endTime. This could happen if
+          // endTime is "now" and client time is not in sync with server time.
+          return;
+        }
+        statDataSets.forEach((d, i) => {
+          if (dataValues[i] === null && prevValues && prevValues[i] !== null) {
+            // null data values show up as gaps in the chart.
+            // If the current value for the dataset is null and the previous
+            // value of the data set is not null, then add an 'end' point
+            // to the chart for the previous value. Otherwise the gap will
+            // be too big. It will go from the start of the previous data
+            // value until the start of the next data value.
+            d.data.push({ x: timestamp.getTime(), y: prevValues[i]! });
+          }
+          d.data.push({ x: timestamp.getTime(), y: dataValues[i]! });
+        });
+        prevValues = dataValues;
+      };
+
+      const addDataSet = (
+        nameY: string,
+        step = false,
+        fill = false,
+        color?: string
+      ) => {
+        if (!color) {
+          color = getColorByIndex(colorIndex);
+          colorIndex++;
+        }
+        statDataSets.push({
+          label: nameY,
+          fill: fill ? "origin" : false,
+          borderColor: color,
+          backgroundColor: color + "7F",
+          stepped: step ? "before" : false,
+          pointRadius: 0,
+          data: [],
+        });
+      };
+
+      const statTypes: this["statTypes"] = [];
+
+      this.statTypes.forEach((type) => {
+        if (statisticsHaveType(stats, type)) {
+          statTypes.push(type);
+          addDataSet(
+            `${name} (${this.hass.localize(
+              `ui.components.statistics_charts.statistic_types.${type}`
+            )})`,
+            false
+          );
+        }
+      });
+
+      // Process chart data.
+      stats.forEach((stat) => {
+        const dataValues: Array<number | null> = [];
+        statTypes.forEach((type) => {
+          const val = stat[type];
+          dataValues.push(val !== null ? Math.round(val * 100) / 100 : null);
+        });
+        const date = new Date(stat.start);
+        pushData(date, dataValues);
+      });
+
+      // Add an entry for final values
+      pushData(endTime, prevValues);
+
+      // Concat two arrays
+      Array.prototype.push.apply(totalDataSets, statDataSets);
+    });
+
+    this._chartData = {
+      datasets: totalDataSets,
+    };
+  }
+
+  static get styles(): CSSResultGroup {
+    return css`
+      :host {
+        display: block;
+        min-height: 60px;
+      }
+      .info {
+        text-align: center;
+        line-height: 60px;
+        color: var(--secondary-text-color);
+      }
+    `;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "statistics-chart": StatisticsChart;
+  }
+}

src/data/history.ts

@@ -53,11 +53,28 @@ export interface HistoryResult {
   timeline: TimelineEntity[];
 }
 
+export type StatisticType = "sum" | "min" | "max" | "mean";
+
+export interface Statistics {
+  [statisticId: string]: StatisticValue[];
+}
+
+export interface StatisticValue {
+  statistic_id: string;
+  start: string;
+  last_reset: string | null;
+  max: number | null;
+  mean: number | null;
+  min: number | null;
+  sum: number | null;
+  state: number | null;
+}
+
 export const fetchRecent = (
-  hass,
-  entityId,
-  startTime,
-  endTime,
+  hass: HomeAssistant,
+  entityId: string,
+  startTime: Date,
+  endTime: Date,
   skipInitialState = false,
   significantChangesOnly?: boolean,
   minimalResponse = true
@@ -87,7 +104,7 @@ export const fetchDate = (
   hass: HomeAssistant,
   startTime: Date,
   endTime: Date,
-  entityId
+  entityId?: string
 ): Promise<HassEntity[][]> =>
   hass.callApi(
     "GET",
@@ -252,3 +269,32 @@ export const computeHistory = (
 
   return { line: unitStates, timeline: timelineDevices };
 };
+
+// Statistics
+
+export const getStatisticIds = (
+  hass: HomeAssistant,
+  statistic_type?: "mean" | "sum"
+) =>
+  hass.callWS<string[]>({
+    type: "history/list_statistic_ids",
+    statistic_type,
+  });
+
+export const fetchStatistics = (
+  hass: HomeAssistant,
+  startTime: Date,
+  endTime?: Date,
+  statistic_ids?: string[]
+) =>
+  hass.callWS<Statistics>({
+    type: "history/statistics_during_period",
+    start_time: startTime.toISOString(),
+    end_time: endTime?.toISOString(),
+    statistic_ids,
+  });
+
+export const statisticsHaveType = (
+  stats: StatisticValue[],
+  type: StatisticType
+) => stats.some((stat) => stat[type] !== null);

src/panels/lovelace/cards/hui-history-graph-card.ts

@@ -63,7 +63,6 @@ export class HuiHistoryGraphCard extends LitElement implements LovelaceCard {
       throw new Error("You must include at least one entity");
     }
 
-    this._config = config;
     this._configEntities = config.entities
       ? processConfigEntities(config.entities)
       : [];
@@ -85,9 +84,14 @@ export class HuiHistoryGraphCard extends LitElement implements LovelaceCard {
       cacheKey: _entities.join(),
       hoursToShow: config.hours_to_show || 24,
     };
+
+    this._config = config;
   }
 
   protected shouldUpdate(changedProps: PropertyValues): boolean {
+    if (changedProps.has("_stateHistory")) {
+      return true;
+    }
     return hasConfigOrEntitiesChanged(this, changedProps);
   }
 

src/panels/lovelace/cards/hui-statistics-graph-card.ts

@@ -0,0 +1,182 @@
+import {
+  css,
+  CSSResultGroup,
+  html,
+  LitElement,
+  PropertyValues,
+  TemplateResult,
+} from "lit";
+import { customElement, property, state } from "lit/decorators";
+import { classMap } from "lit/directives/class-map";
+import "../../../components/ha-card";
+import "../../../components/chart/statistics-chart";
+import { HomeAssistant } from "../../../types";
+import { hasConfigOrEntitiesChanged } from "../common/has-changed";
+import { processConfigEntities } from "../common/process-config-entities";
+import { LovelaceCard } from "../types";
+import { StatisticsGraphCardConfig } from "./types";
+import { fetchStatistics, Statistics } from "../../../data/history";
+
+@customElement("hui-statistics-graph-card")
+export class HuiStatisticsGraphCard extends LitElement implements LovelaceCard {
+  @property({ attribute: false }) public hass?: HomeAssistant;
+
+  @state() private _statistics?: Statistics;
+
+  @state() private _config?: StatisticsGraphCardConfig;
+
+  private _entities: string[] = [];
+
+  private _names: Record<string, string> = {};
+
+  private _fetching = false;
+
+  private _interval?: number;
+
+  public disconnectedCallback() {
+    super.disconnectedCallback();
+    if (this._interval) {
+      clearInterval(this._interval);
+      this._interval = undefined;
+    }
+  }
+
+  public connectedCallback() {
+    super.connectedCallback();
+    if (!this.hasUpdated) {
+      return;
+    }
+    this._getStatistics();
+    // statistics are created every hour
+    clearInterval(this._interval);
+    this._interval = window.setInterval(
+      () => this._getStatistics(),
+      1000 * 60 * 60
+    );
+  }
+
+  public getCardSize(): number {
+    return this._config?.title ? 2 : 0 + 2 * (this._entities?.length || 1);
+  }
+
+  public setConfig(config: StatisticsGraphCardConfig): void {
+    if (!config.entities || !Array.isArray(config.entities)) {
+      throw new Error("Entities need to be an array");
+    }
+
+    if (!config.entities.length) {
+      throw new Error("You must include at least one entity");
+    }
+
+    const configEntities = config.entities
+      ? processConfigEntities(config.entities)
+      : [];
+
+    configEntities.forEach((entity) => {
+      this._entities.push(entity.entity);
+      if (entity.name) {
+        this._names[entity.entity] = entity.name;
+      }
+    });
+
+    if (typeof config.stat_types === "string") {
+      this._config = { ...config, stat_types: [config.stat_types] };
+    } else if (!config.stat_types) {
+      this._config = { ...config, stat_types: ["sum", "min", "max", "mean"] };
+    } else {
+      this._config = config;
+    }
+  }
+
+  protected shouldUpdate(changedProps: PropertyValues): boolean {
+    if (changedProps.has("_statistics")) {
+      return true;
+    }
+    return hasConfigOrEntitiesChanged(this, changedProps);
+  }
+
+  public willUpdate(changedProps: PropertyValues) {
+    super.willUpdate(changedProps);
+    if (!this._config || !changedProps.has("_config")) {
+      return;
+    }
+
+    const oldConfig = changedProps.get("_config") as
+      | StatisticsGraphCardConfig
+      | undefined;
+
+    if (oldConfig?.entities !== this._config.entities) {
+      this._getStatistics();
+      // statistics are created every hour
+      clearInterval(this._interval);
+      this._interval = window.setInterval(
+        () => this._getStatistics(),
+        1000 * 60 * 60
+      );
+    }
+  }
+
+  protected render(): TemplateResult {
+    if (!this.hass || !this._config) {
+      return html``;
+    }
+
+    return html`
+      <ha-card .header="${this._config.title}">
+        <div
+          class="content ${classMap({
+            "has-header": !!this._config.title,
+          })}"
+        >
+          <statistics-chart
+            .hass=${this.hass}
+            .isLoadingData=${!this._statistics}
+            .statisticsData=${this._statistics}
+            .chartType=${this._config.chart_type || "line"}
+            .statTypes=${this._config.stat_types!}
+            .names=${this._names}
+          ></statistics-chart>
+        </div>
+      </ha-card>
+    `;
+  }
+
+  private async _getStatistics(): Promise<void> {
+    if (this._fetching) {
+      return;
+    }
+    const startDate = new Date();
+    startDate.setHours(-24 * (this._config!.days_to_show || 30));
+    this._fetching = true;
+    try {
+      this._statistics = await fetchStatistics(
+        this.hass!,
+        startDate,
+        undefined,
+        this._entities
+      );
+    } finally {
+      this._fetching = false;
+    }
+  }
+
+  static get styles(): CSSResultGroup {
+    return css`
+      ha-card {
+        height: 100%;
+      }
+      .content {
+        padding: 16px;
+      }
+      .has-header {
+        padding-top: 0;
+      }
+    `;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "hui-statistics-graph-card": HuiStatisticsGraphCard;
+  }
+}

src/panels/lovelace/cards/types.ts

@@ -1,3 +1,4 @@
+import { StatisticType } from "../../../data/history";
 import { ActionConfig, LovelaceCardConfig } from "../../../data/lovelace";
 import { FullCalendarView } from "../../../types";
 import { Condition } from "../common/validate-condition";
@@ -210,6 +211,14 @@ export interface HistoryGraphCardConfig extends LovelaceCardConfig {
   title?: string;
 }
 
+export interface StatisticsGraphCardConfig extends LovelaceCardConfig {
+  title?: string;
+  entities: Array<EntityConfig | string>;
+  days_to_show?: number;
+  stat_types?: StatisticType | StatisticType[];
+  chart_type?: "line" | "bar";
+}
+
 export interface PictureCardConfig extends LovelaceCardConfig {
   image?: string;
   tap_action?: ActionConfig;

src/panels/lovelace/create-element/create-card-element.ts

@@ -5,7 +5,6 @@ import "../cards/hui-entities-card";
 import "../cards/hui-entity-button-card";
 import "../cards/hui-entity-card";
 import "../cards/hui-glance-card";
-import "../cards/hui-history-graph-card";
 import "../cards/hui-horizontal-stack-card";
 import "../cards/hui-light-card";
 import "../cards/hui-sensor-card";
@@ -24,7 +23,6 @@ const ALWAYS_LOADED_TYPES = new Set([
   "button",
   "entity-button",
   "glance",
-  "history-graph",
   "horizontal-stack",
   "light",
   "sensor",
@@ -50,6 +48,8 @@ const LAZY_LOAD_TYPES = {
   "shopping-list": () => import("../cards/hui-shopping-list-card"),
   conditional: () => import("../cards/hui-conditional-card"),
   gauge: () => import("../cards/hui-gauge-card"),
+  "history-graph": () => import("../cards/hui-history-graph-card"),
+  "statistics-graph": () => import("../cards/hui-statistics-graph-card"),
   iframe: () => import("../cards/hui-iframe-card"),
   map: () => import("../cards/hui-map-card"),
   markdown: () => import("../cards/hui-markdown-card"),