chart stubs

pom.xml

@@ -18,7 +18,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.4.2</version>
+    <version>3.4.4</version>
   </parent>
 
   <dependencies>

src/main/angular/colors.less

@@ -2,10 +2,12 @@
 
 @foreground: gray;
 @background: white;
+@FONT_SELECTABLE: white;
 
 @consumption: orange;
 @purchase: orangered;
 @production: dodgerblue;
+@cistern: #0760ff;
 @self: forestgreen;
 @delivery: magenta;
 
@@ -46,6 +48,10 @@
   color: @delivery;
 }
 
+.cistern {
+  color: @cistern;
+}
+
 .zero {
   filter: opacity(20%);
 }

src/main/angular/numberTable.less

@@ -1,7 +1,6 @@
 @import "./colors.less";
 
 .numberTable {
-  margin-bottom: 2em;
 
   .arrowLeft {
     float: left;

src/main/angular/src/app/View/View.ts

@@ -0,0 +1,155 @@
+import {Series} from '../series/Series';
+import {validateNumber, validateString} from '../core/validators';
+
+export abstract class View {
+
+  protected constructor(
+    readonly _type_: string,
+    readonly uuid: string,
+    readonly name: string,
+  ) {
+    //
+  }
+
+  static fromJson(json: any, locale: string): View {
+    const type = validateString(json._type_);
+    switch (type) {
+      case 'literal':
+        return ViewLiteral.fromJson2(json);
+      case 'series':
+        return ViewSeries.fromJson2(json, locale);
+      case 'unary':
+        return ViewUnary.fromJson2(json, locale);
+      case 'binary':
+        return ViewBinary.fromJson2(json, locale);
+      default:
+        throw new Error(`View type '${type}' not implemented.`);
+    }
+  }
+
+}
+
+export class ViewLiteral extends View {
+
+  constructor(
+    _type_: string,
+    uuid: string,
+    name: string,
+    readonly value: number,
+  ) {
+    super(_type_, uuid, name);
+  }
+
+  static fromJson2(json: any): ViewLiteral {
+    return new ViewLiteral(
+      validateString(json._type_),
+      validateString(json.uuid),
+      validateString(json.name),
+      validateNumber(json.value),
+    );
+  }
+
+  static cast(view: View): ViewLiteral {
+    return view as ViewLiteral;
+  }
+
+}
+
+export class ViewSeries extends View {
+
+  constructor(
+    _type_: string,
+    uuid: string,
+    name: string,
+    readonly series: Series,
+  ) {
+    super(_type_, uuid, name);
+  }
+
+  static fromJson2(json: any, locale: string): ViewSeries {
+    return new ViewSeries(
+      validateString(json._type_),
+      validateString(json.uuid),
+      validateString(json.name),
+      Series.fromJson(json.series, locale),
+    );
+  }
+
+  static cast(view: View): ViewSeries {
+    return view as ViewSeries;
+  }
+
+}
+
+export enum ViewUnaryOperator {
+  NEG = "NEG",
+  REC = "REC",
+  NOT_NEG = "NOT_NEG",
+}
+
+export class ViewUnary extends View {
+
+  constructor(
+    _type_: string,
+    uuid: string,
+    name: string,
+    readonly operation: ViewUnaryOperator,
+    readonly view: View,
+  ) {
+    super(_type_, uuid, name);
+  }
+
+  static fromJson2(json: any, locale: string): ViewUnary {
+    return new ViewUnary(
+      validateString(json._type_),
+      validateString(json.uuid),
+      validateString(json.name),
+      validateString(json.operation) as ViewUnaryOperator,
+      View.fromJson(json.view, locale),
+    );
+  }
+
+  static cast(view: View): ViewUnary {
+    return view as ViewUnary;
+  }
+
+}
+
+export enum ViewBinaryOperator {
+  PLUS = 'PLUS',
+  MINUS = 'MINUS',
+  MULTIPLY = 'MULTIPLY',
+  DIVIDE = 'DIVIDE',
+  MODULO = 'MODULO',
+  PERCENT = 'PERCENT',
+}
+
+export class ViewBinary extends View {
+
+  constructor(
+    _type_: string,
+    uuid: string,
+    name: string,
+    readonly operation: ViewBinaryOperator,
+    readonly view0: View,
+    readonly view1: View,
+  ) {
+    super(_type_, uuid, name);
+  }
+
+  static fromJson2(json: any, locale: string): ViewBinary {
+    return new ViewBinary(
+      validateString(json._type_),
+      validateString(json.uuid),
+      validateString(json.name),
+      validateString(json.operation) as ViewBinaryOperator,
+      View.fromJson(json.view0, locale),
+      View.fromJson(json.view1, locale),
+    );
+  }
+
+  static cast(view: View): ViewBinary {
+    return view as ViewBinary;
+  }
+
+}

src/main/angular/src/app/View/view-body/view-body.component.html

@@ -0,0 +1,49 @@
+<ng-container *ngIf="view && seriesList">
+
+  <div [ngSwitch]="view._type_">
+
+    <ng-container *ngSwitchCase="'literal'">
+      <input type="number" [ngModel]="ViewLiteral.cast(view).value">
+    </ng-container>
+
+    <ng-container *ngSwitchCase="'series'">
+      <select [ngModel]="ViewSeries.cast(view).series.id">
+        <option *ngFor="let series of seriesList" [ngValue]="series.id">{{ series.name }}</option>
+      </select>
+    </ng-container>
+
+    <ng-container *ngSwitchCase="'unary'">
+      <select [ngModel]="ViewUnary.cast(view).operation">
+        <option [ngValue]="ViewUnaryOperator.NEG">negiere</option>
+        <option [ngValue]="ViewUnaryOperator.NOT_NEG">nicht negativ</option>
+        <option [ngValue]="ViewUnaryOperator.REC">Kehrwert</option>
+      </select>
+      <div class="children">
+        <div class="child">
+          <app-view-body [view]="ViewUnary.cast(view).view" [seriesList]="seriesList"></app-view-body>
+        </div>
+      </div>
+    </ng-container>
+
+    <ng-container *ngSwitchCase="'binary'">
+      <div class="children">
+        <div class="child">
+          <app-view-body [view]="ViewBinary.cast(view).view0" [seriesList]="seriesList"></app-view-body>
+        </div>
+        <select class="binary" [ngModel]="ViewBinary.cast(view).operation">
+          <option [ngValue]="ViewBinaryOperator.PLUS">plus</option>
+          <option [ngValue]="ViewBinaryOperator.MINUS">minus</option>
+          <option [ngValue]="ViewBinaryOperator.MULTIPLY">mal</option>
+          <option [ngValue]="ViewBinaryOperator.DIVIDE">geteilt</option>
+          <option [ngValue]="ViewBinaryOperator.MODULO">mod</option>
+          <option [ngValue]="ViewBinaryOperator.PERCENT">Prozent</option>
+        </select>
+        <div class="child">
+          <app-view-body [view]="ViewBinary.cast(view).view1" [seriesList]="seriesList"></app-view-body>
+        </div>
+      </div>
+    </ng-container>
+
+  </div>
+
+</ng-container>

src/main/angular/src/app/View/view-body/view-body.component.less

@@ -0,0 +1,19 @@
+@import "../../../../colors";
+
+.children {
+  margin-left: 0.5em;
+  border-left: 0.1em solid green;
+  overflow: visible;
+
+  .child {
+    padding-top: 0.5em;
+    padding-bottom: 0.5em;
+    padding-left: 0.5em;
+  }
+
+}
+
+select.binary {
+  background-color: @background;
+  margin-left: -0.5em;
+}

src/main/angular/src/app/View/view-body/view-body.component.ts

@@ -0,0 +1,40 @@
+import {Component, Input} from '@angular/core';
+import {NgForOf, NgIf, NgSwitch, NgSwitchCase} from '@angular/common';
+import {FormsModule, ReactiveFormsModule} from '@angular/forms';
+import {View, ViewBinary, ViewBinaryOperator, ViewLiteral, ViewSeries, ViewUnary, ViewUnaryOperator} from '../View';
+import {Series} from '../../series/Series';
+
+@Component({
+  selector: 'app-view-body',
+  imports: [
+    NgForOf,
+    NgSwitchCase,
+    ReactiveFormsModule,
+    NgSwitch,
+    FormsModule,
+    NgIf
+  ],
+  templateUrl: './view-body.component.html',
+  styleUrl: './view-body.component.less'
+})
+export class ViewBodyComponent {
+
+  protected readonly ViewSeries = ViewSeries;
+
+  protected readonly ViewLiteral = ViewLiteral;
+
+  protected readonly ViewUnary = ViewUnary;
+
+  protected readonly ViewUnaryOperator = ViewUnaryOperator;
+
+  protected readonly ViewBinaryOperator = ViewBinaryOperator;
+
+  protected readonly ViewBinary = ViewBinary;
+
+  @Input()
+  view?: View;
+
+  @Input()
+  seriesList?: Series[] = [];
+
+}

src/main/angular/src/app/View/view-list/view-list.component.html

@@ -0,0 +1,11 @@
+<div class="list">
+  <div class="view" *ngFor="let view of rootList">
+    <div class="labelPair">
+      <div class="name">Name:</div>
+      <input [ngModel]="view.name" placeholder="Name">
+    </div>
+    <div class="body">
+      <app-view-body [view]="view" [seriesList]="seriesList"></app-view-body>
+    </div>
+  </div>
+</div>

src/main/angular/src/app/View/view-list/view-list.component.less

@@ -0,0 +1,24 @@
+.view {
+  font-size: 80%;
+
+  .labelPair {
+    display: flex;
+    white-space: nowrap;
+    margin: 0.5em;
+
+    .name {
+      padding-right: 0.5em;
+    }
+
+    input {
+      flex-grow: 1;
+      width: 0;
+    }
+
+  }
+
+  .body {
+    margin: 0.5em;
+  }
+
+}

src/main/angular/src/app/View/view-list/view-list.component.ts

@@ -0,0 +1,46 @@
+import {Component, OnInit} from '@angular/core';
+import {ViewService} from '../view.service';
+import {View, ViewLiteral, ViewSeries, ViewUnary, ViewUnaryOperator} from '../View';
+import {NgForOf} from '@angular/common';
+import {FormsModule} from '@angular/forms';
+import {Series} from '../../series/Series';
+import {SeriesService} from '../../series/series.service';
+import {ViewBodyComponent} from '../view-body/view-body.component';
+
+@Component({
+  selector: 'app-view-list',
+  imports: [
+    NgForOf,
+    FormsModule,
+    ViewBodyComponent
+  ],
+  templateUrl: './view-list.component.html',
+  styleUrl: './view-list.component.less'
+})
+export class ViewListComponent implements OnInit {
+
+  protected readonly ViewUnary = ViewUnary;
+
+  protected readonly ViewUnaryOperator = ViewUnaryOperator;
+
+  protected readonly ViewLiteral = ViewLiteral;
+
+  protected readonly ViewSeries = ViewSeries;
+
+  protected seriesList: Series[] = [];
+
+  protected rootList: View[] = [];
+
+  constructor(
+    readonly viewService: ViewService,
+    readonly seriesService: SeriesService,
+  ) {
+    //
+  }
+
+  ngOnInit(): void {
+    this.viewService.list(list => this.rootList = list);
+    this.seriesService.all(list => this.seriesList = list);
+  }
+
+}

src/main/angular/src/app/View/view.service.ts

@@ -0,0 +1,28 @@
+import {Inject, Injectable, LOCALE_ID} from '@angular/core';
+import {ApiService} from '../core/api.service';
+import {FromJson, Next} from '../core/types';
+import {View} from './View';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ViewService {
+
+  readonly fromJson: FromJson<View> = json => View.fromJson(json, this.locale);
+
+  constructor(
+    readonly api: ApiService,
+    @Inject(LOCALE_ID) readonly locale: string,
+  ) {
+    //
+  }
+
+  list(next: Next<View[]>) {
+    return this.api.getList(['View', 'rootList'], this.fromJson, next);
+  }
+
+  byUuid(uuid: string, next: Next<View>) {
+    return this.api.getSingle(['View', 'byUuid', uuid], this.fromJson, next);
+  }
+
+}

src/main/angular/src/app/app.component.html

@@ -1,5 +1,33 @@
 <div class="menubar">
+
   <div class="menuitem menuitemLeft" *ngFor="let route of menubar()" [routerLink]="[route.routerLink]" routerLinkActive="menuitemActive">{{ route.title }}</div>
+
+  <div class="menuitem electricity">
+
+    <ng-container *ngIf="isDelivering">
+      <div class="halfLine">
+        <div class="delivery">{{ powerDelivery?.formatted2 }}</div>
+        <div>&nbsp;+&nbsp;</div>
+        <div class="self">{{ powerSelf?.formatted2 }}</div>
+      </div>
+    </ng-container>
+
+    <ng-container *ngIf="!isDelivering">
+      <div class="halfLine">
+        <div class="self">{{ powerProduction?.formatted2 }}</div>
+        <div>&nbsp;+&nbsp;</div>
+        <div class="purchase">{{ powerPurchase?.formatted2 }}</div>
+      </div>
+    </ng-container>
+
+    <div class="halfLine">
+      <div class="delivery">{{ aggregations.energyDeliveredPercent?.formatted2 }}</div>
+      <div>&nbsp;/&nbsp;</div>
+      <div class="purchase">{{ aggregations.energyPurchasedPercent?.formatted2 }}</div>
+    </div>
+
+  </div>
+
 </div>
 
 <router-outlet/>

src/main/angular/src/app/app.component.less

@@ -1,5 +1,5 @@
 .menubar {
-  border-bottom: 1px solid black;
+  border-bottom: 0.05em solid black;
   background-color: #303d47;
 
   .menuitem {
@@ -8,12 +8,12 @@
 
   .menuitemLeft {
     float: left;
-    border-right: 1px solid black;
+    border-right: 0.05em solid black;
   }
 
   .menuitemRight {
     float: right;
-    border-left: 1px solid black;
+    border-left: 0.05em solid black;
   }
 
   .menuitemActive {
@@ -21,4 +21,18 @@
     background-color: #006ebc;
   }
 
+  .electricity {
+    float: right;
+    padding-right: 0.25em;
+    font-size: 55%;
+
+    .halfLine {
+
+      div {
+        float: right;
+      }
+
+    }
+  }
+
 }

src/main/angular/src/app/app.component.ts

@@ -1,17 +1,68 @@
-import {Component} from '@angular/core';
+import {Component, OnDestroy, OnInit} from '@angular/core';
 import {RouterLink, RouterLinkActive, RouterOutlet} from '@angular/router';
-import {menubar, ROUTING} from './app.routes';
-import {NgForOf} from '@angular/common';
+import {menubar} from './app.routes';
+import {NgForOf, NgIf} from '@angular/common';
+import {SeriesService} from './series/series.service';
+import {Subscription, timer} from 'rxjs';
+import {Value} from './series/value/Value';
+import {AggregationWrapperDto} from './series/AggregationWrapperDto';
+import {Alignment} from './series/Alignment';
 
 @Component({
   selector: 'app-root',
-  imports: [RouterOutlet, RouterLink, NgForOf, RouterLinkActive],
+  imports: [RouterOutlet, RouterLink, NgForOf, RouterLinkActive, NgIf],
   templateUrl: './app.component.html',
   styleUrl: './app.component.less'
 })
-export class AppComponent {
-
-  protected readonly ROUTING = ROUTING;
+export class AppComponent implements OnInit, OnDestroy {
 
   protected readonly menubar = menubar;
+
+  protected aggregations: AggregationWrapperDto = AggregationWrapperDto.EMPTY;
+
+  private subs: Subscription[] = [];
+
+  constructor(
+    readonly seriesService: SeriesService,
+  ) {
+    //
+  }
+
+  ngOnInit(): void {
+    this.subs.push(this.seriesService.subscribeAny());
+    this.subs.push(timer(0, 5000).subscribe(() => this.fetch()));
+  }
+
+  ngOnDestroy(): void {
+    this.subs.forEach(sub => sub.unsubscribe());
+  }
+
+  get isDelivering(): boolean {
+    return (this.powerDelivery?.value || 0) > 0;
+  }
+
+  get powerProduction(): Value | undefined {
+    return this.seriesService.powerProduced.series?.lastValue;
+  }
+
+  get powerBalance(): Value | undefined {
+    return this.seriesService.powerBalance.series?.lastValue;
+  }
+
+  get powerSelf(): Value | undefined {
+    return this.powerProduction?.minus(this.powerDelivery)?.notNegative();
+  }
+
+  get powerPurchase(): Value | undefined {
+    return this.powerBalance?.notNegative();
+  }
+
+  get powerDelivery(): Value | undefined {
+    return this.powerBalance?.negate()?.notNegative();
+  }
+
+  private fetch() {
+    this.seriesService.aggregations(Alignment.DAY, 0, aggregations => this.aggregations = aggregations);
+  }
+
 }

src/main/angular/src/app/app.routes.ts

@@ -1,6 +1,8 @@
 import {Routes} from '@angular/router';
-import {ElectroComponent} from './electro/electro.component';
-import {GreenhouseComponent} from './greenhouse/greenhouse/greenhouse.component';
+import {LiveComponent} from './live/live.component';
+import {GreenhouseComponent} from './live/greenhouse/greenhouse/greenhouse.component';
+import {HistoryComponent} from './history/history.component';
+import {ViewListComponent} from './View/view-list/view-list.component';
 
 export class Path {
 
@@ -19,8 +21,10 @@ export class Path {
 }
 
 export const ROUTING = {
-  ENERGY: new Path('Energy', 'Energie', true),
-  GREENHOUSE: new Path('Greenhouse', 'Gewächshaus', true),
+  LIVE: new Path('Live', 'Live', true),
+  HISTORY: new Path('History', 'History', true),
+  VIEW_LIST: new Path('ViewList', 'Views', true),
+  GREENHOUSE: new Path('Greenhouse', 'Gewächshaus', false),
 }
 
 export function menubar(): Path[] {
@@ -28,7 +32,9 @@ export function menubar(): Path[] {
 }
 
 export const routes: Routes = [
-  {path: ROUTING.ENERGY.path, component: ElectroComponent},
+  {path: ROUTING.LIVE.path, component: LiveComponent},
+  {path: ROUTING.HISTORY.path, component: HistoryComponent},
   {path: ROUTING.GREENHOUSE.path, component: GreenhouseComponent},
-  {path: '**', redirectTo: ROUTING.ENERGY.path},
+  {path: ROUTING.VIEW_LIST.path, component: ViewListComponent},
+  {path: '**', redirectTo: ROUTING.LIVE.path},
 ];

src/main/angular/src/app/electro/electro.component.ts

@@ -1,18 +0,0 @@
-import {Component} from '@angular/core';
-import {ElectroEnergyComponent} from "./energy/electro-energy.component";
-import {ElectroPowerComponent} from "./power/electro-power.component";
-import {WeatherDiagramComponent} from '../weather/weather-diagram/weather-diagram.component';
-
-@Component({
-  selector: 'app-electro',
-  imports: [
-    ElectroEnergyComponent,
-    ElectroPowerComponent,
-    WeatherDiagramComponent
-  ],
-  templateUrl: './electro.component.html',
-  styleUrl: './electro.component.less'
-})
-export class ElectroComponent {
-
-}

src/main/angular/src/app/electro/energy/electro-energy.component.html

@@ -1,49 +0,0 @@
-<div class="numberTable">
-
-  <div class="title">
-    Energie
-  </div>
-
-  <div class="option">
-    <button class="arrowLeft" (click)="shiftAlignment(+1)">&larr;</button>
-    {{ offset > 0 ? -offset : '' }}{{ alignment === Alignment.FIVE && offset > 0 ? 'x' : '' }} {{ alignment.display }}{{ offset > 1 ? alignment.plural : '' }}
-    <button class="arrowRight" (click)="shiftAlignment(-1)">&rarr;</button>
-  </div>
-
-  <div class="option">
-    <button class="arrowLeft" (click)="shiftOffset(+1)">&larr;</button>
-    {{ alignment.offsetTitle(offset, locale) }}
-    <button class="arrowRight" (click)="shiftOffset(-1)" [disabled]="offset === 0">&rarr;</button>
-  </div>
-
-  <div class="content">
-    <div class="entry consumption" [class.zero]="aggregations.energyConsumed?.zero">
-      <div class="name">Bedarf</div>
-      <div class="percent">&nbsp;</div>
-      <div class="value">{{ aggregations.energyConsumed?.formatted }}</div>
-    </div>
-    <div class="entry purchase" [class.zero]="aggregations.energyPurchased?.delta?.zero">
-      <div class="name">Bezug</div>
-      <div class="percent">{{ aggregations.energyPurchasedPercent?.formatted }}</div>
-      <div class="value">{{ aggregations.energyPurchased?.delta?.formatted }}</div>
-    </div>
-    <div class="entry production" [class.zero]="aggregations.energyProduced?.delta?.zero">
-      <div class="name">Produktion</div>
-      <div class="percent">{{ aggregations.energyProducedPercent?.formatted }}</div>
-      <div class="value">{{ aggregations.energyProduced?.delta?.formatted }}</div>
-    </div>
-    <div class="entry self" [class.zero]="aggregations.energySelf?.zero">
-      <div class="name">Eigenbedarf</div>
-      <div class="percent">{{ aggregations.energySelfPercent?.formatted }}</div>
-      <div class="value">{{ aggregations.energySelf?.formatted }}</div>
-    </div>
-    <div class="entry delivery" [class.zero]="aggregations.energyDelivered?.delta?.zero">
-      <div class="name">Einspeisung</div>
-      <div class="percent">{{ aggregations.energyDeliveredPercent?.formatted }}</div>
-      <div class="value">{{ aggregations.energyDelivered?.delta?.formatted }}</div>
-    </div>
-  </div>
-
-  <app-percent-bar [produktion]="aggregations.energyProduced?.delta" [self]="aggregations.energySelf" [purchase]="aggregations.energyPurchased?.delta" [delivery]="aggregations.energyDelivered?.delta"></app-percent-bar>
-
-</div>

src/main/angular/src/app/electro/energy/electro-energy.component.less

@@ -1 +0,0 @@
-@import "../../../../colors.less";

src/main/angular/src/app/electro/power/electro-power.component.html

@@ -1,37 +0,0 @@
-<div class="numberTable">
-
-  <div class="title">
-    Leistung
-  </div>
-
-  <div class="content">
-    <div class="entry consumption" [class.zero]="powerConsumption?.zero">
-      <div class="name">Bedarf</div>
-      <div class="percent">&nbsp;</div>
-      <div class="value">{{ powerConsumption?.formatted }}</div>
-    </div>
-    <div class="entry purchase" [class.zero]="powerPurchase?.zero">
-      <div class="name">Bezug</div>
-      <div class="percent">{{ powerPurchasePercent?.formatted }}</div>
-      <div class="value">{{ powerPurchase?.formatted }}</div>
-    </div>
-    <div class="entry production" [class.zero]="powerProduction?.zero">
-      <div class="name">Produktion</div>
-      <div class="percent">{{ powerProducedPercent?.formatted }}</div>
-      <div class="value">{{ powerProduction?.formatted }}</div>
-    </div>
-    <div class="entry self" [class.zero]="powerSelf?.zero">
-      <div class="name">Eigenbedarf</div>
-      <div class="percent">{{ powerSelfPercent?.formatted }}</div>
-      <div class="value">{{ powerSelf?.formatted }}</div>
-    </div>
-    <div class="entry delivery" [class.zero]="powerDelivery?.zero">
-      <div class="name">Einspeisung</div>
-      <div class="percent">{{ powerDeliveryPercent?.formatted }}</div>
-      <div class="value">{{ powerDelivery?.formatted }}</div>
-    </div>
-  </div>
-
-  <app-percent-bar [produktion]="powerProduction" [self]="powerSelf" [purchase]="powerPurchase" [delivery]="powerDelivery"></app-percent-bar>
-
-</div>

src/main/angular/src/app/history/history.component.html

@@ -0,0 +1,64 @@
+<app-tile>
+  <div tile-body>
+    <div class="numberTable">
+      <div class="option">
+        <button class="arrowLeft" (click)="shiftAlignment(+1)">&larr;</button>
+        {{ offset > 0 ? -offset : '' }}{{ alignment === Alignment.FIVE && offset > 0 ? 'x' : '' }} {{ alignment.display }}{{ offset > 1 ? alignment.plural : '' }}
+        <button class="arrowRight" (click)="shiftAlignment(-1)">&rarr;</button>
+      </div>
+
+      <div class="option">
+        <button class="arrowLeft" (click)="shiftOffset(+1)">&larr;</button>
+        {{ alignment.offsetTitle(offset, locale) }}
+        <button class="arrowRight" (click)="shiftOffset(-1)" [disabled]="offset === 0">&rarr;</button>
+      </div>
+    </div>
+  </div>
+</app-tile>
+
+<app-tile>
+  <div tile-head>
+    Energie
+  </div>
+  <div tile-body>
+    <div class="numberTable">
+      <div class="content">
+        <div class="entry consumption" [class.zero]="aggregations.energyConsumed?.zero">
+          <div class="name">Verbraucht</div>
+          <div class="percent">&nbsp;</div>
+          <div class="value">{{ aggregations.energyConsumed?.formatted }}</div>
+        </div>
+        <div class="entry purchase" [class.zero]="aggregations.energyPurchased?.delta?.zero">
+          <div class="name">Bezogen</div>
+          <div class="percent">{{ aggregations.energyPurchasedPercent?.formatted }}</div>
+          <div class="value">{{ aggregations.energyPurchased?.delta?.formatted }}</div>
+        </div>
+        <div class="entry production" [class.zero]="aggregations.energyProduced?.delta?.zero">
+          <div class="name">Produziert</div>
+          <div class="percent">{{ aggregations.energyProducedPercent?.formatted }}</div>
+          <div class="value">{{ aggregations.energyProduced?.delta?.formatted }}</div>
+        </div>
+        <div class="entry self" [class.zero]="aggregations.energySelf?.zero">
+          <div class="name">Selbst verbr.</div>
+          <div class="percent">{{ aggregations.energySelfPercent?.formatted }}</div>
+          <div class="value">{{ aggregations.energySelf?.formatted }}</div>
+        </div>
+        <div class="entry delivery" [class.zero]="aggregations.energyDelivered?.delta?.zero">
+          <div class="name">Eingespeist</div>
+          <div class="percent">{{ aggregations.energyDeliveredPercent?.formatted }}</div>
+          <div class="value">{{ aggregations.energyDelivered?.delta?.formatted }}</div>
+        </div>
+      </div>
+    </div>
+    <app-percent-bar [produktion]="aggregations.energyProduced?.delta" [self]="aggregations.energySelf" [purchase]="aggregations.energyPurchased?.delta" [delivery]="aggregations.energyDelivered?.delta"></app-percent-bar>
+  </div>
+</app-tile>
+
+<app-tile *ngIf="alignment.inner">
+  <div tile-head>
+    Zisterne
+  </div>
+  <div tile-body>
+    <img width="100%" *ngIf="seriesService.cisternVolume.series" [src]="seriesService.graph(seriesService.cisternVolume.series, 600, 200, alignment, offset, alignment.inner, 1)" [alt]="seriesService.cisternVolume.series.title">
+  </div>
+</app-tile>

src/main/angular/src/app/history/history.component.less

@@ -0,0 +1 @@
+@import "../../../colors.less";

src/main/angular/src/app/history/history.component.ts

@@ -1,19 +1,23 @@
 import {Component, Inject, LOCALE_ID, OnDestroy, OnInit} from '@angular/core';
-import {PercentBarComponent} from '../../shared/percent-bar/percent-bar.component';
-import {AggregationWrapperDto} from '../../series/AggregationWrapperDto';
-import {Alignment} from '../../series/Alignment';
+import {PercentBarComponent} from '../shared/percent-bar/percent-bar.component';
+import {AggregationWrapperDto} from '../series/AggregationWrapperDto';
+import {Alignment} from '../series/Alignment';
 import {Subscription} from 'rxjs';
-import {SeriesService} from '../../series/series.service';
+import {SeriesService} from '../series/series.service';
+import {NgIf} from "@angular/common";
+import {TileComponent} from '../shared/tile/tile.component';
 
 @Component({
-  selector: 'app-electro-energy',
+  selector: 'app-history',
   imports: [
-    PercentBarComponent
+    PercentBarComponent,
+    NgIf,
+    TileComponent
   ],
-  templateUrl: './electro-energy.component.html',
-  styleUrl: './electro-energy.component.less'
+  templateUrl: './history.component.html',
+  styleUrl: './history.component.less'
 })
-export class ElectroEnergyComponent implements OnInit, OnDestroy {
+export class HistoryComponent implements OnInit, OnDestroy {
 
   protected readonly Alignment = Alignment;
 

src/main/angular/src/app/live/cistern/cistern.component.html

@@ -0,0 +1,23 @@
+<app-tile>
+
+  <div tile-head>
+    Zisterne
+  </div>
+
+  <div tile-body>
+
+    <div class="numberTable">
+      <div class="content">
+        <div class="entry cistern">
+          <div class="name">Volumen</div>
+          <div class="percent">{{ seriesService.cisternVolume.series?.lastValue?.percent(2000)?.localeString }} %</div>
+          <div class="value">{{ seriesService.cisternVolume.series?.lastValue?.localeString }} {{ seriesService.cisternVolume.series?.unit?.unit }}</div>
+        </div>
+      </div>
+    </div>
+
+    <img width="100%" *ngIf="seriesService.cisternVolume.series" [src]="graph(seriesService.cisternVolume.series)" [alt]="seriesService.cisternVolume.series.title">
+
+  </div>
+
+</app-tile>

src/main/angular/src/app/live/cistern/cistern.component.ts

@@ -0,0 +1,39 @@
+import {Component, OnDestroy, OnInit} from '@angular/core';
+import {SeriesService} from '../../series/series.service';
+import {Subscription} from 'rxjs';
+import {NgIf} from '@angular/common';
+import {Series} from '../../series/Series';
+import {TileComponent} from '../../shared/tile/tile.component';
+import {Alignment} from '../../series/Alignment';
+
+@Component({
+  selector: 'app-cistern',
+  imports: [
+    NgIf,
+    TileComponent
+  ],
+  templateUrl: './cistern.component.html',
+  styleUrl: './cistern.component.less'
+})
+export class CisternComponent implements OnInit, OnDestroy {
+
+  private subs: Subscription[] = [];
+
+  constructor(
+    readonly seriesService: SeriesService,
+  ) {
+  }
+
+  ngOnInit(): void {
+    this.subs.push(this.seriesService.subscribeAny());
+  }
+
+  ngOnDestroy(): void {
+    this.subs.forEach(sub => sub.unsubscribe());
+  }
+
+  graph(series: Series) {
+    return this.seriesService.graph(series, 600, 200, Alignment.FIVE, 0, Alignment.FIVE, 24 * 12);
+  }
+
+}

src/main/angular/src/app/live/greenhouse/greenhouse/greenhouse.component.ts

@@ -1,5 +1,5 @@
 import {Component, OnDestroy, OnInit} from '@angular/core';
-import {SeriesService} from '../../series/series.service';
+import {SeriesService} from '../../../series/series.service';
 import {Subscription} from 'rxjs';
 
 @Component({

src/main/angular/src/app/live/live.component.html

@@ -2,4 +2,4 @@
 
 <app-electro-power></app-electro-power>
 
-<app-electro-energy></app-electro-energy>
+<app-cistern></app-cistern>

src/main/angular/src/app/live/live.component.ts

@@ -0,0 +1,18 @@
+import {Component} from '@angular/core';
+import {ElectroPowerComponent} from "./power/electro-power.component";
+import {WeatherDiagramComponent} from './weather/weather-diagram/weather-diagram.component';
+import {CisternComponent} from './cistern/cistern.component';
+
+@Component({
+  selector: 'app-live',
+  imports: [
+    ElectroPowerComponent,
+    WeatherDiagramComponent,
+    CisternComponent
+  ],
+  templateUrl: './live.component.html',
+  styleUrl: './live.component.less'
+})
+export class LiveComponent {
+
+}

src/main/angular/src/app/live/power/electro-power.component.html

@@ -0,0 +1,42 @@
+<app-tile>
+
+  <div tile-head>
+    Leistung
+  </div>
+
+  <div tile-body>
+    <div class="numberTable">
+      <div class="content">
+        <div class="entry consumption" [class.zero]="powerConsumption?.zero">
+          <div class="name">Verbrauch</div>
+          <div class="percent">&nbsp;</div>
+          <div class="value">{{ powerConsumption?.formatted }}</div>
+        </div>
+        <div class="entry purchase" [class.zero]="powerPurchase?.zero">
+          <div class="name">Bezug</div>
+          <div class="percent">{{ powerPurchasePercent?.formatted }}</div>
+          <div class="value">{{ powerPurchase?.formatted }}</div>
+        </div>
+        <div class="entry production" [class.zero]="powerProduction?.zero">
+          <div class="name">Produktion</div>
+          <div class="percent">{{ powerProducedPercent?.formatted }}</div>
+          <div class="value">{{ powerProduction?.formatted }}</div>
+        </div>
+        <div class="entry self" [class.zero]="powerSelf?.zero">
+          <div class="name">Eigenverbrauch</div>
+          <div class="percent">{{ powerSelfPercent?.formatted }}</div>
+          <div class="value">{{ powerSelf?.formatted }}</div>
+        </div>
+        <div class="entry delivery" [class.zero]="powerDelivery?.zero">
+          <div class="name">Einspeisung</div>
+          <div class="percent">{{ powerDeliveryPercent?.formatted }}</div>
+          <div class="value">{{ powerDelivery?.formatted }}</div>
+        </div>
+      </div>
+    </div>
+
+    <app-percent-bar [produktion]="powerProduction" [self]="powerSelf" [purchase]="powerPurchase" [delivery]="powerDelivery"></app-percent-bar>
+
+  </div>
+
+</app-tile>

src/main/angular/src/app/live/power/electro-power.component.ts

@@ -1,13 +1,15 @@
 import {Component, OnDestroy, OnInit} from '@angular/core';
 import {PercentBarComponent} from "../../shared/percent-bar/percent-bar.component";
-import {Value} from '../../value/Value';
+import {Value} from '../../series/value/Value';
 import {SeriesService} from '../../series/series.service';
 import {Subscription} from 'rxjs';
+import {TileComponent} from '../../shared/tile/tile.component';
 
 @Component({
   selector: 'app-electro-power',
   imports: [
-    PercentBarComponent
+    PercentBarComponent,
+    TileComponent
   ],
   templateUrl: './electro-power.component.html',
   styleUrl: './electro-power.component.less'

src/main/angular/src/app/live/weather/weather-diagram/WeatherDay.ts

@@ -1,5 +1,5 @@
-import {Value} from "../../value/Value";
-import {validateDate, validateList} from "../../core/validators";
+import {Value} from "../../../series/value/Value";
+import {validateDate, validateList} from "../../../core/validators";
 import {WeatherHour} from "./WeatherHour";
 
 export class WeatherDay {

src/main/angular/src/app/live/weather/weather-diagram/WeatherHour.ts

@@ -1,5 +1,5 @@
-import {Value} from '../../value/Value';
-import {validateDate} from '../../core/validators';
+import {Value} from '../../../series/value/Value';
+import {validateDate} from '../../../core/validators';
 
 export class WeatherHour {
 

src/main/angular/src/app/live/weather/weather-diagram/weather-diagram.component.html

@@ -0,0 +1,26 @@
+<app-tile [padding]="false">
+
+  <div tile-body>
+    <div class="day">
+      <div class="hour" *ngFor="let hour of hours">
+        <div class="bar weekdayHolder" *ngIf="hour.date.getHours() === 8">
+          {{ dateFormat(hour.date | date:'E') }}
+        </div>
+        <div class="bar clouds" [style.height]="clouds(hour)"></div>
+        <div class="bar irradiation" [style.height]="irradiation(hour)"></div>
+        <div class="bar precipitation" [style.height]="precipitation(hour)"></div>
+        <div class="bar temperature" [style.height]="temperature(hour)" [ngClass]="temperatureClasses(hour)"></div>
+      </div>
+    </div>
+    <div class="legend">
+      <span class="line temperatureGTE30">&ge;30°C</span>
+      <span class="line temperatureGTE20">&ge;20°C</span>
+      <span class="line temperatureGTE10">&ge;10°C</span>
+      <span class="line temperatureGT0">&gt;0°C</span>
+      <span class="line temperatureNegative">&le;0°C</span>
+      <span class="line">&nbsp;</span>
+      <span class="line">Niederschlag 100% = {{ PRECIPITATION_MAX_MM }}mm</span>
+    </div>
+  </div>
+
+</app-tile>

src/main/angular/src/app/live/weather/weather-diagram/weather-diagram.component.ts

@@ -3,6 +3,7 @@ import {DatePipe, NgClass, NgForOf, NgIf} from '@angular/common';
 import {WeatherHour} from './WeatherHour';
 import {WeatherService} from './weather.service';
 import {WeatherDay} from './WeatherDay';
+import {TileComponent} from '../../../shared/tile/tile.component';
 
 const PAST_HOURS_COUNT = 0;
 
@@ -14,7 +15,8 @@ const DAY_COUNT = 7;
     NgForOf,
     NgIf,
     DatePipe,
-    NgClass
+    NgClass,
+    TileComponent
   ],
   templateUrl: './weather-diagram.component.html',
   styleUrl: './weather-diagram.component.less'

src/main/angular/src/app/live/weather/weather-diagram/weather.service.ts

@@ -1,6 +1,6 @@
 import {Inject, Injectable, LOCALE_ID} from '@angular/core';
-import {ApiService} from '../../core/api.service';
-import {Next} from '../../core/types';
+import {ApiService} from '../../../core/api.service';
+import {Next} from '../../../core/types';
 import {WeatherDay} from './WeatherDay';
 
 @Injectable({

src/main/angular/src/app/series/AggregationWrapperDto.ts

@@ -4,7 +4,7 @@ import {MeterAggregate} from './meter/MeterAggregate';
 import {Aggregate} from './Aggregate';
 import {VaryingAggregate} from './varying/VaryingAggregate';
 
-import {Value} from '../value/Value';
+import {Value} from './value/Value';
 
 export class AggregationWrapperDto {
 

src/main/angular/src/app/series/Alignment.ts

@@ -4,23 +4,25 @@ export class Alignment {
 
   private static readonly values: Alignment[] = [];
 
-  static readonly FIVE = new Alignment('FIVE', '5 Minuten', '', Alignment.offsetTitleFive);
+  static readonly FIVE = new Alignment('FIVE', '5 Minuten', '', Alignment.offsetTitleFive, null, 0);
 
-  static readonly HOUR = new Alignment('HOUR', 'Stunde', 'n', Alignment.offsetTitleHour);
+  static readonly HOUR = new Alignment('HOUR', 'Stunde', 'n', Alignment.offsetTitleHour, Alignment.FIVE, 12);
 
-  static readonly DAY = new Alignment('DAY', 'Tag', 'e', Alignment.offsetTitleDay);
+  static readonly DAY = new Alignment('DAY', 'Tag', 'e', Alignment.offsetTitleDay, Alignment.FIVE, 24 * 12);
 
-  static readonly WEEK = new Alignment('WEEK', 'Woche', 'n', Alignment.offsetTitleWeek);
+  static readonly WEEK = new Alignment('WEEK', 'Woche', 'n', Alignment.offsetTitleWeek, Alignment.HOUR, 7 * 24);
 
-  static readonly MONTH = new Alignment('MONTH', 'Monat', 'e', Alignment.offsetTitleMonth);
+  static readonly MONTH = new Alignment('MONTH', 'Monat', 'e', Alignment.offsetTitleMonth, Alignment.HOUR, 30 * 24);
 
-  static readonly YEAR = new Alignment('YEAR', 'Jahr', 'e', Alignment.offsetTitleYear);
+  static readonly YEAR = new Alignment('YEAR', 'Jahr', 'e', Alignment.offsetTitleYear, Alignment.DAY, 365);
 
   constructor(
     readonly name: string,
     readonly display: string,
     readonly plural: string,
-    readonly offsetTitle: (offset: number, locale: string) => string
+    readonly offsetTitle: (offset: number, locale: string) => string,
+    readonly inner: Alignment | null,
+    readonly innerCount: number,
   ) {
     Alignment.values.push(this);
   }
@@ -139,4 +141,8 @@ export class Alignment {
     return `${formatDate(date, "yyyy", locale)}`;
   }
 
+  toString(): string {
+    return this.name;
+  }
+
 }

src/main/angular/src/app/series/Series.ts

@@ -1,6 +1,6 @@
-import {Unit} from '../value/Unit';
+import {Unit} from './value/Unit';
 import {validateNumber, validateString} from '../core/validators';
-import {Value} from '../value/Value';
+import {Value} from './value/Value';
 
 export class Series {
 

src/main/angular/src/app/series/meter/MeterAggregate.ts

@@ -1,6 +1,6 @@
 import {Series} from '../Series';
 import {Aggregate} from '../Aggregate';
-import {Value} from '../../value/Value';
+import {Value} from '../value/Value';
 
 export class MeterAggregate extends Aggregate {
 

src/main/angular/src/app/series/series.service.ts

@@ -28,6 +28,10 @@ export class SeriesService extends AbstractRepositoryService {
 
   readonly greenhouseIlluminance: SeriesWrapper = new SeriesWrapper("greenhouse/illuminance", this.onSubscribe, this.onUnsubscribe);
 
+  readonly cisternHeight: SeriesWrapper = new SeriesWrapper("cistern/height", this.onSubscribe, this.onUnsubscribe);
+
+  readonly cisternVolume: SeriesWrapper = new SeriesWrapper("cistern/volume", this.onSubscribe, this.onUnsubscribe);
+
   protected get liveValues(): SeriesWrapper[] {
     return [
       this.powerConsumed,
@@ -38,6 +42,8 @@ export class SeriesService extends AbstractRepositoryService {
       this.greenhouseHumidityRelative,
       this.greenhouseHumidityAbsolute,
       this.greenhouseIlluminance,
+      this.cisternHeight,
+      this.cisternVolume,
     ];
   }
 
@@ -52,4 +58,11 @@ export class SeriesService extends AbstractRepositoryService {
     this.api.getSingle(['Series', 'agg', 'all', alignment.name, 'offset', offset], j => AggregationWrapperDto.fromJson(j, this.locale), next);
   }
 
+  graph(series: Series, width: number, height: number, alignment: Alignment, offset: number, innerAlignment: Alignment | null, count: number): any {
+    if (innerAlignment === null) {
+      return null;
+    }
+    return ApiService.url('http', ['Series', 'Graph', series.id, width, height, alignment, offset, count, innerAlignment]);
+  }
+
 }

src/main/angular/src/app/series/value/Unit.ts

@@ -1,4 +1,4 @@
-import {validateString} from '../core/validators';
+import {validateString} from '../../core/validators';
 
 export class Unit {
 
@@ -36,6 +36,10 @@ export class Unit {
 
   static readonly LIGHT_BOOLEAN = new Unit('LIGHT_BOOLEAN', '');
 
+  static readonly VOLUME_L = new Unit('VOLUME_L', 'l');
+
+  static readonly LENGTH_CM = new Unit('LENGTH_CM', 'cm');
+
   private constructor(
     readonly name: string,
     readonly unit: string,

src/main/angular/src/app/series/value/Value.ts

@@ -1,5 +1,5 @@
 import {Unit} from "./Unit";
-import {validateNumber} from "../core/validators";
+import {validateNumber} from "../../core/validators";
 
 export class Value {
 
@@ -13,7 +13,8 @@ export class Value {
     readonly value: number,
     readonly unit: Unit,
     readonly decimals: number,
-    readonly locale: string) {
+    readonly locale: string,
+  ) {
     this.localeString = this.value.toLocaleString(this.locale, {maximumFractionDigits: this.decimals, minimumFractionDigits: this.decimals});
     this.valueInteger = this.localeString.split(/[,.]/)[0];
     this.valueFraction = this.localeString.split(/[,.]/)[1];

src/main/angular/src/app/shared/percent-bar/percent-bar.component.ts

@@ -1,5 +1,5 @@
 import {Component, Input} from '@angular/core';
-import {Value} from '../../value/Value';
+import {Value} from '../../series/value/Value';
 import {NgIf} from '@angular/common';
 
 @Component({

src/main/angular/src/app/shared/tile/tile.component.html

@@ -0,0 +1,10 @@
+<div class="tile">
+  <div class="tileInner" [class.tilePadding]="padding">
+    <div class="tileHead">
+      <ng-content select="[tile-head]"></ng-content>
+    </div>
+    <div class="tileBody">
+      <ng-content select="[tile-body]"></ng-content>
+    </div>
+  </div>
+</div>

src/main/angular/src/app/shared/tile/tile.component.less

@@ -0,0 +1,16 @@
+.tile {
+  float: left;
+  margin-bottom: 1em;
+}
+
+.tilePadding {
+  padding: 0.5em;
+}
+
+.tileHead {
+  font-size: 70%;
+  font-style: italic;
+  text-align: center;
+  text-decoration: underline;
+  margin-bottom: 0.1em;
+}

src/main/angular/src/app/shared/tile/tile.component.ts

@@ -0,0 +1,14 @@
+import {Component, Input} from '@angular/core';
+
+@Component({
+  selector: 'app-tile',
+  imports: [],
+  templateUrl: './tile.component.html',
+  styleUrl: './tile.component.less'
+})
+export class TileComponent {
+
+  @Input()
+  padding: boolean = true;
+
+}

src/main/angular/src/app/weather/weather-diagram/weather-diagram.component.html

@@ -1,25 +0,0 @@
-<div class="numberTable">
-  <div class="title">
-    Wetter
-  </div>
-  <div class="day">
-    <div class="hour" *ngFor="let hour of hours">
-      <div class="bar weekdayHolder" *ngIf="hour.date.getHours() === 8">
-        {{ dateFormat(hour.date | date:'E') }}
-      </div>
-      <div class="bar clouds" [style.height]="clouds(hour)"></div>
-      <div class="bar irradiation" [style.height]="irradiation(hour)"></div>
-      <div class="bar precipitation" [style.height]="precipitation(hour)"></div>
-      <div class="bar temperature" [style.height]="temperature(hour)" [ngClass]="temperatureClasses(hour)"></div>
-    </div>
-  </div>
-  <div class="legend">
-    <span class="line temperatureGTE30">&ge;30°C</span>
-    <span class="line temperatureGTE20">&ge;20°C</span>
-    <span class="line temperatureGTE10">&ge;10°C</span>
-    <span class="line temperatureGT0">&gt;0°C</span>
-    <span class="line temperatureNegative">&le;0°C</span>
-    <span class="line">&nbsp;</span>
-    <span class="line">Niederschlag 100% = {{ PRECIPITATION_MAX_MM }}mm</span>
-  </div>
-</div>

src/main/angular/src/index.html

@@ -4,7 +4,7 @@
     <meta charset="utf-8">
     <title>Data</title>
     <base href="/">
-    <meta name="viewport" content="width=device-width, user-scalable=no">
+    <meta name="viewport" content="width=device-width, user-scalable=yes">
     <!--suppress HtmlUnknownTarget -->
     <link rel="icon" type="image/x-icon" href="favicon.svg">
   </head>

src/main/angular/src/styles.less

@@ -10,6 +10,14 @@ body {
   margin: 0;
 }
 
+input, select {
+  background-color: transparent;
+  font-size: inherit;
+  color: @FONT_SELECTABLE;
+  border: 0.05em solid gray;
+  border-radius: 0.2em;
+}
+
 button {
   all: unset;
   font-size: inherit;
@@ -56,3 +64,22 @@ table.vertical {
   }
 
 }
+
+@tile-width: 400px;
+@font-base: 6vw;
+
+.generate-tiles(@i, @max) when (@i =< @max) {
+  @media (min-width: @tile-width * @i) {
+    body {
+      font-size: calc(@font-base / @i);
+    }
+
+    .tile {
+      width: calc(100% / @i);
+    }
+  }
+
+  .generate-tiles(@i + 1, @max);
+}
+
+.generate-tiles(1, 10);

src/main/java/de/ph87/data/chart/Chart.java

@@ -0,0 +1,26 @@
+package de.ph87.data.chart;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Entity
+@Getter
+@ToString
+@NoArgsConstructor
+public class Chart {
+
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  private long id;
+
+  @Version
+  private long version;
+
+  @NonNull
+  @Column(nullable = false)
+  private String name = "";
+
+}

src/main/java/de/ph87/data/chart/axis/Axis.java

@@ -0,0 +1,35 @@
+package de.ph87.data.chart.axis;
+
+import de.ph87.data.chart.Chart;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Entity
+@Getter
+@ToString
+@NoArgsConstructor
+public class Axis {
+
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  private long id;
+
+  @Version
+  private long version;
+
+  @NonNull
+  @ManyToOne(optional = false)
+  private Chart chart;
+
+  @NonNull
+  @Column(nullable = false)
+  private String name = "";
+
+  public Axis(@NonNull final Chart chart) {
+    this.chart = chart;
+  }
+
+}

src/main/java/de/ph87/data/chart/axis/graph/Graph.java

@@ -0,0 +1,41 @@
+package de.ph87.data.chart.axis.graph;
+
+import de.ph87.data.chart.axis.Axis;
+import de.ph87.data.series.Series;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Entity
+@Getter
+@ToString
+@NoArgsConstructor
+public class Graph {
+
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  private long id;
+
+  @Version
+  private long version;
+
+  @NonNull
+  @ManyToOne(optional = false)
+  private Axis axis;
+
+  @NonNull
+  @Column(nullable = false)
+  private String name = "";
+
+  @NonNull
+  @ManyToOne(optional = false)
+  private Series series;
+
+  public Graph(@NonNull final Axis axis, @NonNull final Series series) {
+    this.axis = axis;
+    this.series = series;
+  }
+
+}

src/main/java/de/ph87/data/graph/Graph.java

@@ -1,17 +1,20 @@
-package de.ph87.data.series.graph;
+package de.ph87.data.graph;
 
-import de.ph87.data.series.*;
-import de.ph87.data.value.*;
-import jakarta.annotation.*;
-import lombok.*;
+import de.ph87.data.point.Point;
+import de.ph87.data.point.PointRequest;
+import de.ph87.data.series.SeriesDto;
+import de.ph87.data.series.SeriesType;
+import de.ph87.data.value.Autoscale;
+import jakarta.annotation.Nullable;
+import lombok.NonNull;
 
 import java.awt.*;
-import java.awt.geom.*;
-import java.awt.image.*;
+import java.awt.geom.Line2D;
+import java.awt.image.BufferedImage;
 import java.util.List;
-import java.util.function.*;
+import java.util.function.Function;
 
-import static java.lang.Math.*;
+import static java.lang.Math.max;
 
 public class Graph {
 
@@ -23,10 +26,7 @@ public class Graph {
   public final SeriesDto series;
 
   @NonNull
-  public final Aligned begin;
-
-  @NonNull
-  public final Aligned end;
+  public final PointRequest request;
 
   public final int width;
 
@@ -34,7 +34,7 @@ public class Graph {
 
   public final int border;
 
-  public final List<Point> points;
+  public final List<java.awt.Point> points;
 
   public final long minuteMin;
 
@@ -60,21 +60,20 @@ public class Graph {
 
   public final int maxLabelWidth;
 
-  private final Autoscale autoscale;
+  public final Autoscale autoscale;
 
-  public Graph(@NonNull final SeriesDto series, @NonNull final List<GraphPoint> points, @NonNull final Aligned begin, @NonNull final Aligned end, final int width, final int height, final int border) {
+  public Graph(@NonNull final SeriesDto series, @NonNull final List<Point> points, @NonNull final PointRequest request, final int width, final int height, final int border) {
     this.series = series;
-    this.begin = begin;
-    this.end = end;
+    this.request = request;
     this.width = width;
     this.height = height;
     this.border = border;
 
     // find bounds
     double vSum = 0;
-    double vMin = series.isGraphZero() ? 0.0 : Double.MAX_VALUE;
-    double vMax = series.isGraphZero() ? 0.0 : Double.MIN_VALUE;
-    for (final GraphPoint point : points) {
+    double vMin = series.getYMin() == null || Double.isNaN(series.getYMin()) ? Double.MIN_VALUE : series.getYMin();
+    double vMax = series.getYMax() == null || Double.isNaN(series.getYMax()) ? Double.MAX_VALUE : series.getYMax();
+    for (final Point point : points) {
       vMin = Math.min(vMin, point.getValue());
       vMax = max(vMax, point.getValue());
       vSum += point.getValue();
@@ -87,9 +86,9 @@ public class Graph {
     vSum *= autoscale.factor;
 
     // find max label width
-    int __maxLabelWidth = 80;
+    int __maxLabelWidth = 0;
     final FontMetrics fontMetrics = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB).getGraphics().getFontMetrics();
-    for (final GraphPoint point : points) {
+    for (final Point point : points) {
       __maxLabelWidth = max(__maxLabelWidth, fontMetrics.stringWidth(autoscale.format(point.getValue() * autoscale.factor)));
     }
     this.maxLabelWidth = __maxLabelWidth;
@@ -97,10 +96,10 @@ public class Graph {
     widthInner = width - 3 * border - this.maxLabelWidth;
     heightInner = height - 2 * border;
 
-    minuteMin = begin.date.toEpochSecond() / 60;
-    minuteMax = end.date.toEpochSecond() / 60;
+    minuteMin = request.begin.date.toEpochSecond() / 60;
+    minuteMax = request.end.date.toEpochSecond() / 60;
     minuteRange = minuteMax - minuteMin;
-    minuteScale = (double) widthInner / (minuteRange + begin.alignment.maxDuration.toMinutes());
+    minuteScale = (double) widthInner / (minuteRange + request.inner.maxDuration.toMinutes());
 
     valueMin = vMin;
     valueMax = vMax;
@@ -115,35 +114,29 @@ public class Graph {
   public BufferedImage draw() {
     final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
     final Graphics2D g = (Graphics2D) image.getGraphics();
-    final int fontH3_4 = (int) Math.round(g.getFontMetrics().getHeight() * 0.75);
 
-    g.setColor(Color.gray);
-    final String string = "%s [%s]".formatted(series.getTitle(), autoscale.unit);
-    g.drawString(string, border, border + fontH3_4);
-
-    yLabel(g, valueMax, DASHED, Color.red);
-    yLabel(g, valueAvg, DASHED, new Color(0, 127, 0));
-    yLabel(g, 0, NORMAL, Color.BLACK);
-    yLabel(g, valueMin, DASHED, Color.blue);
+    yLabel(g, valueMax, Color.red);
+    yLabel(g, valueAvg, new Color(0, 255, 0));
+    yLabel(g, valueMin, new Color(64, 128, 255));
 
     g.translate(border, height - border);
     g.scale(1, -1);
 
+    // y-axis
     g.setStroke(NORMAL);
-    g.setColor(Color.BLACK);
-    g.drawLine(widthInner, 0, widthInner, heightInner); // y-axis
+    g.setColor(Color.GRAY);
+    g.drawLine(widthInner, 0, widthInner, heightInner);
 
+    g.setColor(Color.WHITE);
     if (series.type == SeriesType.METER) {
-      g.setColor(Color.PINK);
-      final int space = (int) (minuteScale * begin.alignment.maxDuration.toMinutes());
+      final int space = (int) (minuteScale * request.inner.maxDuration.toMinutes());
       final int width = (int) (space * 0.95);
-      for (final Point point : points) {
+      for (final java.awt.Point point : points) {
         g.fillRect(point.x + (space - width), 0, width, point.y);
       }
     } else {
-      g.setColor(Color.RED);
-      Point last = null;
-      for (final Point current : points) {
+      java.awt.Point last = null;
+      for (final java.awt.Point current : points) {
         if (last != null) {
           g.drawLine(last.x, last.y, current.x, current.y);
         }
@@ -153,20 +146,20 @@ public class Graph {
     return image;
   }
 
-  private void yLabel(@NonNull final Graphics2D g, final double value, @Nullable final Stroke stroke, @Nullable final Color color) {
+  private void yLabel(@NonNull final Graphics2D g, final double value, @Nullable final Color color) {
     final String string = autoscale.format(value);
     final int offset = maxLabelWidth - g.getFontMetrics().stringWidth(string);
     final int y = height - ((int) Math.round((value - valueMin) * valueScale) + border);
     g.setColor(color);
     g.drawString(string, widthInner + 2 * border + offset, y + (int) Math.round(g.getFontMetrics().getHeight() * 0.25));
-    if (stroke != null && color != null) {
-      g.setStroke(stroke);
+    if (color != null) {
+      g.setStroke(Graph.DASHED);
       g.draw(new Line2D.Double(border, y, width - maxLabelWidth - border * 1.5, y));
     }
   }
 
   @NonNull
-  private Function<GraphPoint, Point> toPoint() {
+  private Function<Point, java.awt.Point> toPoint() {
     return point -> {
       final long minuteEpoch = point.getDate().toEpochSecond() / 60;
       final long minuteRelative = minuteEpoch - minuteMin;
@@ -177,7 +170,7 @@ public class Graph {
       final double valueScaled = valueRelative * valueScale;
       final int y = (int) Math.round(valueScaled);
 
-      return new Point(x, y);
+      return new java.awt.Point(x, y);
     };
   }
 

src/main/java/de/ph87/data/graph/GraphController.java

@@ -0,0 +1,49 @@
+package de.ph87.data.graph;
+
+import de.ph87.data.point.Point;
+import de.ph87.data.point.PointRequest;
+import de.ph87.data.point.PointService;
+import de.ph87.data.series.Alignment;
+import de.ph87.data.series.Series;
+import de.ph87.data.series.SeriesDto;
+import de.ph87.data.series.SeriesRepository;
+import jakarta.servlet.http.HttpServletResponse;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.util.List;
+
+@Slf4j
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("Series/Graph")
+public class GraphController {
+
+  private final SeriesRepository seriesRepository;
+
+  private final PointService pointService;
+
+  @GetMapping(path = "{seriesId}/{width}/{height}/{outerName}/{offset}/{duration}/{innerName}", produces = "image/png")
+  public void graph(@PathVariable final long seriesId, final HttpServletResponse response, @PathVariable final int width, @PathVariable final int height, @PathVariable final String outerName, @PathVariable final long offset, @PathVariable final long duration, @PathVariable final String innerName) throws IOException {
+    final Alignment outer = Alignment.valueOf(outerName);
+    final Alignment inner = Alignment.valueOf(innerName);
+    final PointRequest request = new PointRequest(outer, offset, duration, inner);
+
+    final Series series = seriesRepository.findById(seriesId).orElseThrow();
+    final List<Point> points = pointService.getPoints(series, request);
+    final Graph graph = new Graph(new SeriesDto(series), points, request, width, height, 10);
+
+    final BufferedImage image = graph.draw();
+    response.setContentType("image/png");
+    ImageIO.write(image, "PNG", response.getOutputStream());
+    response.getOutputStream().flush();
+  }
+
+}

src/main/java/de/ph87/data/message/handler/PatrixJsonHandler.java

@@ -0,0 +1,73 @@
+package de.ph87.data.message.handler;
+
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import de.ph87.data.message.IMessageHandler;
+import de.ph87.data.message.Message;
+import de.ph87.data.series.meter.MeterInbound;
+import de.ph87.data.series.varying.VaryingInbound;
+import de.ph87.data.value.Unit;
+import de.ph87.data.value.Value;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.ToString;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.stereotype.Service;
+
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class PatrixJsonHandler implements IMessageHandler {
+
+  private final ObjectMapper objectMapper;
+
+  private final ApplicationEventPublisher applicationEventPublisher;
+
+  @Override
+  public void handle(@NonNull final Message message) throws Exception {
+    if (!message.topic.endsWith("/PatrixJson")) {
+      return;
+    }
+    final Inbound inbound = objectMapper.readValue(message.payload, Inbound.class);
+    applicationEventPublisher.publishEvent(inbound);
+  }
+
+  @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
+  @JsonSubTypes({
+    @JsonSubTypes.Type(name = "VARYING", value = Varying.class),
+    @JsonSubTypes.Type(name = "METER", value = Meter.class),
+  })
+  private interface Inbound {
+
+    enum Type {
+      VARYING,
+      METER,
+    }
+
+  }
+
+  @ToString(callSuper = true)
+  public static class Varying extends VaryingInbound implements Inbound {
+
+    protected Varying(@NonNull final String name, final long date, final double value, @NonNull final Unit unit) {
+      super(name, ZonedDateTime.ofInstant(Instant.ofEpochSecond(date), ZoneId.systemDefault()), new Value(value, unit));
+    }
+
+  }
+
+  @ToString(callSuper = true)
+  public static class Meter extends MeterInbound implements Inbound {
+
+    protected Meter(@NonNull final String name, @NonNull final String number, final long date, final double value, @NonNull final Unit unit) {
+      super(name, number, ZonedDateTime.ofInstant(Instant.ofEpochSecond(date), ZoneId.systemDefault()), new Value(value, unit));
+    }
+
+  }
+
+}

src/main/java/de/ph87/data/point/Point.java

@@ -1,22 +1,22 @@
-package de.ph87.data.series.graph;
+package de.ph87.data.point;
 
 import lombok.*;
 
 import java.time.*;
 
 @Data
-public class GraphPoint {
+public class Point {
 
   public final ZonedDateTime date;
 
   public final double value;
 
   @NonNull
-  public GraphPoint plus(@NonNull final GraphPoint other) {
+  public Point plus(@NonNull final Point other) {
     if (this.date.compareTo(other.date) != 0) {
       throw new RuntimeException("Cannot 'add' GraphPoints with different dates: this=%s, other=%s".formatted(this, other));
     }
-    return new GraphPoint(date, value + other.value);
+    return new Point(date, value + other.value);
   }
 
 }

src/main/java/de/ph87/data/point/PointController.java

@@ -0,0 +1,26 @@
+package de.ph87.data.point;
+
+import de.ph87.data.view.ViewPointRequest;
+import de.ph87.data.view.ViewService;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("points")
+public class PointController {
+
+  private final ViewService viewService;
+
+  @PostMapping("fetch")
+  public List<Point> fetch(@RequestBody @NonNull final ViewPointRequest request) {
+    return viewService.getPoints(request);
+  }
+
+}

src/main/java/de/ph87/data/point/PointRequest.java

@@ -0,0 +1,41 @@
+package de.ph87.data.point;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.ph87.data.series.Aligned;
+import de.ph87.data.series.Alignment;
+import lombok.Data;
+import lombok.NonNull;
+
+import java.time.ZonedDateTime;
+
+@Data
+public class PointRequest {
+
+  @NonNull
+  public final Alignment outer;
+
+  public final long outerOffset;
+
+  public final long outerCount;
+
+  @NonNull
+  public final Alignment inner;
+
+  @NonNull
+  @JsonIgnore
+  public final Aligned begin;
+
+  @NonNull
+  @JsonIgnore
+  public final Aligned end;
+
+  public PointRequest(@NonNull final Alignment outer, final long outerOffset, final long outerCount, @NonNull final Alignment inner) {
+    this.outer = outer;
+    this.outerOffset = outerOffset;
+    this.outerCount = outerCount;
+    this.inner = inner;
+    this.end = outer.align(ZonedDateTime.now()).plus(1).minus(outerOffset);
+    this.begin = end.minus(outerCount);
+  }
+
+}

src/main/java/de/ph87/data/point/PointService.java

@@ -0,0 +1,30 @@
+package de.ph87.data.point;
+
+import de.ph87.data.series.Series;
+import de.ph87.data.series.meter.MeterService;
+import de.ph87.data.series.varying.VaryingService;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class PointService {
+
+  private final VaryingService varyingService;
+
+  private final MeterService meterService;
+
+  @NonNull
+  public List<Point> getPoints(@NonNull final Series series, @NonNull final PointRequest pointRequest) {
+    return switch (series.getType()) {
+      case METER -> meterService.getPoints(series, pointRequest);
+      case VARYING -> varyingService.getPoints(series, pointRequest);
+    };
+  }
+
+}

src/main/java/de/ph87/data/series/Series.java

@@ -1,10 +1,11 @@
 package de.ph87.data.series;
 
-import de.ph87.data.value.*;
+import de.ph87.data.value.Unit;
+import jakarta.annotation.Nullable;
 import jakarta.persistence.*;
 import lombok.*;
 
-import java.time.*;
+import java.time.ZonedDateTime;
 
 @Entity
 @Getter
@@ -39,8 +40,13 @@ public class Series {
   @Enumerated(EnumType.STRING)
   private SeriesType type;
 
-  @Column(nullable = false)
-  private boolean graphZero = false;
+  @Column
+  @Nullable
+  public final Double yMin = null;
+
+  @Column
+  @Nullable
+  public final Double yMax = null;
 
   @Column(nullable = false)
   private boolean autoscale = false;

src/main/java/de/ph87/data/series/SeriesDto.java

@@ -1,16 +1,21 @@
 package de.ph87.data.series;
 
-import de.ph87.data.value.*;
-import de.ph87.data.web.*;
-import lombok.*;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.ph87.data.value.Unit;
+import de.ph87.data.web.IWebSocketMessage;
+import jakarta.annotation.Nullable;
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
 
-import java.time.*;
-import java.util.*;
+import java.time.ZonedDateTime;
+import java.util.List;
 
 @Getter
 @ToString
 public class SeriesDto implements IWebSocketMessage {
 
+  @JsonIgnore
   public final List<Object> websocketTopic = List.of("Series");
 
   public final long id;
@@ -25,7 +30,11 @@ public class SeriesDto implements IWebSocketMessage {
 
   public final SeriesType type;
 
-  public final boolean graphZero;
+  @Nullable
+  public final Double yMin;
+
+  @Nullable
+  public final Double yMax;
 
   public final boolean autoscale;
 
@@ -49,7 +58,8 @@ public class SeriesDto implements IWebSocketMessage {
     this.unit = series.getUnit();
     this.decimals = series.getDecimals();
     this.type = series.getType();
-    this.graphZero = series.isGraphZero();
+    this.yMin = series.getYMin();
+    this.yMax = series.getYMax();
     this.autoscale = series.isAutoscale();
     this.min = series.getMin();
     this.max = series.getMax();

src/main/java/de/ph87/data/series/SeriesService.java

@@ -1,14 +1,16 @@
 package de.ph87.data.series;
 
-import de.ph87.data.*;
-import lombok.*;
-import lombok.extern.slf4j.*;
-import org.springframework.context.*;
-import org.springframework.stereotype.*;
-import org.springframework.transaction.annotation.*;
+import de.ph87.data.Action;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
-import java.util.*;
-import java.util.function.*;
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.Function;
 
 @Slf4j
 @Service
@@ -39,11 +41,6 @@ public class SeriesService {
     return seriesRepository.findById(id).orElseThrow();
   }
 
-  @NonNull
-  public SeriesDto getDtoById(final long id) {
-    return toDto(getById(id));
-  }
-
   @NonNull
   private SeriesDto publish(@NonNull final Series series, @NonNull final Action action) {
     final SeriesDto dto = toDto(series);

src/main/java/de/ph87/data/series/graph/GraphController.java

@@ -1,34 +0,0 @@
-package de.ph87.data.series.graph;
-
-import de.ph87.data.series.*;
-import jakarta.servlet.http.*;
-import lombok.*;
-import lombok.extern.slf4j.*;
-import org.springframework.web.bind.annotation.*;
-
-import javax.imageio.*;
-import java.awt.image.*;
-import java.io.*;
-import java.time.*;
-
-@Slf4j
-@RestController
-@RequiredArgsConstructor
-@RequestMapping("Series/Graph")
-public class GraphController {
-
-  private final GraphService graphService;
-
-  @GetMapping(path = "{seriesId}/{width}/{height}/{alignmentName}/{offset}/{duration}", produces = "image/png")
-  public void graph(@PathVariable final long seriesId, final HttpServletResponse response, @PathVariable final int width, @PathVariable final int height, @PathVariable final String alignmentName, @PathVariable final long offset, @PathVariable final long duration) throws IOException {
-    final Alignment alignment = Alignment.valueOf(alignmentName);
-    final Aligned end = alignment.align(ZonedDateTime.now()).minus(offset);
-    final Aligned begin = end.minus(duration - 1);
-    final Graph graph = graphService.getGraph(seriesId, begin, end, width, height, 10);
-    final BufferedImage image = graph.draw();
-    response.setContentType("image/png");
-    ImageIO.write(image, "PNG", response.getOutputStream());
-    response.getOutputStream().flush();
-  }
-
-}

src/main/java/de/ph87/data/series/graph/GraphService.java

@@ -1,33 +0,0 @@
-package de.ph87.data.series.graph;
-
-import de.ph87.data.series.*;
-import de.ph87.data.series.meter.*;
-import de.ph87.data.series.varying.*;
-import lombok.*;
-import lombok.extern.slf4j.*;
-import org.springframework.stereotype.*;
-
-import java.util.*;
-
-@Slf4j
-@Service
-@RequiredArgsConstructor
-public class GraphService {
-
-  private final SeriesService seriesService;
-
-  private final VaryingService varyingService;
-
-  private final MeterService meterService;
-
-  @NonNull
-  public Graph getGraph(final long seriesId, @NonNull final Aligned begin, @NonNull final Aligned end, final int width, final int height, final int border) {
-    final SeriesDto series = seriesService.getDtoById(seriesId);
-    final List<GraphPoint> entries = switch (series.getType()) {
-      case METER -> meterService.getPoints(series, begin, end);
-      case VARYING -> varyingService.getPoints(series, begin, end);
-    };
-    return new Graph(series, entries, begin, end, width, height, border);
-  }
-
-}

src/main/java/de/ph87/data/series/meter/MeterService.java

@@ -1,22 +1,31 @@
 package de.ph87.data.series.meter;
 
+import de.ph87.data.point.Point;
+import de.ph87.data.point.PointRequest;
 import de.ph87.data.series.*;
-import de.ph87.data.series.graph.*;
-import de.ph87.data.series.meter.day.*;
-import de.ph87.data.series.meter.five.*;
-import de.ph87.data.series.meter.hour.*;
-import de.ph87.data.series.meter.month.*;
-import de.ph87.data.series.meter.week.*;
-import de.ph87.data.series.meter.year.*;
-import lombok.*;
-import lombok.extern.slf4j.*;
+import de.ph87.data.series.meter.day.MeterDay;
+import de.ph87.data.series.meter.day.MeterDayRepository;
+import de.ph87.data.series.meter.five.MeterFive;
+import de.ph87.data.series.meter.five.MeterFiveRepository;
+import de.ph87.data.series.meter.hour.MeterHour;
+import de.ph87.data.series.meter.hour.MeterHourRepository;
+import de.ph87.data.series.meter.month.MeterMonth;
+import de.ph87.data.series.meter.month.MeterMonthRepository;
+import de.ph87.data.series.meter.week.MeterWeek;
+import de.ph87.data.series.meter.week.MeterWeekRepository;
+import de.ph87.data.series.meter.year.MeterYear;
+import de.ph87.data.series.meter.year.MeterYearRepository;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.context.event.EventListener;
-import org.springframework.stereotype.*;
-import org.springframework.transaction.annotation.*;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
-import java.util.*;
-import java.util.function.*;
-import java.util.stream.*;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.stream.Collectors;
 
 @Slf4j
 @Service
@@ -80,13 +89,13 @@ public class MeterService {
   }
 
   @NonNull
-  public List<GraphPoint> getPoints(@NonNull final SeriesDto series, @NonNull final Aligned begin, @NonNull final Aligned end) {
-    final List<? extends MeterValue> graphPoints = findRepository(begin.alignment).findAllByIdMeterSeriesIdAndIdDateGreaterThanEqualAndIdDateLessThanEqualOrderByIdDate(series.id, begin.date, end.date);
-    final List<GraphPoint> points = graphPoints.stream().map(meterValue -> new GraphPoint(meterValue.getId().getDate(), meterValue.getMax() - meterValue.getMin())).collect(Collectors.toCollection(LinkedList::new));
+  public List<Point> getPoints(final @NonNull Series series, @NonNull final PointRequest pointRequest) {
+    final List<? extends MeterValue> graphPoints = findRepository(pointRequest.inner).findAllByIdMeterSeriesIdAndIdDateGreaterThanEqualAndIdDateLessThanEqualOrderByIdDate(series.getId(), pointRequest.begin.date, pointRequest.end.date);
+    final List<Point> points = graphPoints.stream().map(meterValue -> new Point(meterValue.getId().getDate(), meterValue.getMax() - meterValue.getMin())).collect(Collectors.toCollection(LinkedList::new));
     for (int i = 0; i < points.size() - 1; i++) {
       if (points.get(i).date.compareTo(points.get(i + 1).date) == 0) {
-        final GraphPoint first = points.remove(i);
-        final GraphPoint second = points.remove(i + 1);
+        final Point first = points.remove(i);
+        final Point second = points.remove(i + 1);
         points.add(i, first.plus(second));
       }
     }

src/main/java/de/ph87/data/series/varying/VaryingService.java

@@ -1,20 +1,28 @@
 package de.ph87.data.series.varying;
 
+import de.ph87.data.point.Point;
+import de.ph87.data.point.PointRequest;
 import de.ph87.data.series.*;
-import de.ph87.data.series.graph.*;
-import de.ph87.data.series.varying.day.*;
-import de.ph87.data.series.varying.five.*;
-import de.ph87.data.series.varying.hour.*;
-import de.ph87.data.series.varying.month.*;
-import de.ph87.data.series.varying.week.*;
-import de.ph87.data.series.varying.year.*;
-import lombok.*;
-import lombok.extern.slf4j.*;
+import de.ph87.data.series.varying.day.VaryingDay;
+import de.ph87.data.series.varying.day.VaryingDayRepository;
+import de.ph87.data.series.varying.five.VaryingFive;
+import de.ph87.data.series.varying.five.VaryingFiveRepository;
+import de.ph87.data.series.varying.hour.VaryingHour;
+import de.ph87.data.series.varying.hour.VaryingHourRepository;
+import de.ph87.data.series.varying.month.VaryingMonth;
+import de.ph87.data.series.varying.month.VaryingMonthRepository;
+import de.ph87.data.series.varying.week.VaryingWeek;
+import de.ph87.data.series.varying.week.VaryingWeekRepository;
+import de.ph87.data.series.varying.year.VaryingYear;
+import de.ph87.data.series.varying.year.VaryingYearRepository;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.context.event.EventListener;
-import org.springframework.stereotype.*;
-import org.springframework.transaction.annotation.*;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
-import java.util.*;
+import java.util.List;
 
 @Slf4j
 @Service
@@ -65,11 +73,11 @@ public class VaryingService {
   }
 
   @NonNull
-  public List<GraphPoint> getPoints(@NonNull final SeriesDto series, @NonNull final Aligned begin, @NonNull final Aligned end) {
-    return findRepository(begin.alignment)
-      .findAllByIdSeriesIdAndIdDateGreaterThanEqualAndIdDateLessThanEqual(series.id, begin.date, end.date)
+  public List<Point> getPoints(final @NonNull Series series, @NonNull final PointRequest pointRequest) {
+    return findRepository(pointRequest.inner)
+      .findAllByIdSeriesIdAndIdDateGreaterThanEqualAndIdDateLessThanEqual(series.getId(), pointRequest.begin.date, pointRequest.end.date)
       .stream()
-      .map(v -> new GraphPoint(v.getId().getDate(), v.getAvg()))
+      .map(v -> new Point(v.getId().getDate(), v.getAvg()))
       .toList();
   }
 

src/main/java/de/ph87/data/value/Unit.java

@@ -1,11 +1,13 @@
 package de.ph87.data.value;
 
-import com.fasterxml.jackson.core.*;
-import com.fasterxml.jackson.databind.*;
-import lombok.*;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import lombok.NonNull;
 
-import java.io.*;
-import java.util.*;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.List;
 
 public enum Unit {
   TEMPERATURE_C("°C"),
@@ -50,7 +52,9 @@ public enum Unit {
   DOOR_BOOLEAN("", 1, BOOLEAN),
   WINDOW_BOOLEAN("", 1, BOOLEAN),
   LIGHT_BOOLEAN("", 1, BOOLEAN),
-  ;
+
+  VOLUME_L("l"),
+  LENGTH_CM("cm");
 
   public final String unit;
 

src/main/java/de/ph87/data/view/ViewController.java

@@ -0,0 +1,23 @@
+package de.ph87.data.view;
+
+import de.ph87.data.view.tree.ViewDto;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("View")
+public class ViewController {
+
+  private final ViewRepository viewRepository;
+
+  @GetMapping("rootList")
+  public List<ViewDto> rootList() {
+    return viewRepository.findAllDtoByNameNotEmpty();
+  }
+
+}

src/main/java/de/ph87/data/view/ViewPointRequest.java

@@ -0,0 +1,20 @@
+package de.ph87.data.view;
+
+import de.ph87.data.point.PointRequest;
+import de.ph87.data.series.Alignment;
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Getter
+@ToString(callSuper = true)
+public class ViewPointRequest extends PointRequest {
+
+  public final String viewUuid;
+
+  public ViewPointRequest(final @NonNull Alignment outer, final int outerOffset, final int outerCount, final @NonNull Alignment inner, @NonNull final String viewUuid) {
+    super(outer, outerOffset, outerCount, inner);
+    this.viewUuid = viewUuid;
+  }
+
+}

src/main/java/de/ph87/data/view/ViewRepository.java

@@ -0,0 +1,20 @@
+package de.ph87.data.view;
+
+import de.ph87.data.view.tree.View;
+import de.ph87.data.view.tree.ViewDto;
+import lombok.NonNull;
+import org.springframework.data.repository.ListCrudRepository;
+
+import java.util.List;
+
+public interface ViewRepository extends ListCrudRepository<View, String> {
+
+  boolean existsByName(@NonNull String name);
+
+  List<View> findAllByNameNot(@NonNull String name);
+
+  default List<ViewDto> findAllDtoByNameNotEmpty() {
+    return findAllByNameNot("").stream().map(ViewDto::map).toList();
+  }
+
+}

src/main/java/de/ph87/data/view/ViewScope.java

@@ -0,0 +1,46 @@
+package de.ph87.data.view;
+
+import de.ph87.data.point.Point;
+import de.ph87.data.point.PointRequest;
+import de.ph87.data.point.PointService;
+import de.ph87.data.series.Series;
+import lombok.Data;
+import lombok.NonNull;
+
+import java.time.ZonedDateTime;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Data
+public class ViewScope {
+
+  private final PointService pointService;
+
+  private final PointRequest request;
+
+  private final Map<Long, List<Point>> seriesPoints = new HashMap<>();
+
+  private final Map<Double, List<Point>> literalPoints = new HashMap<>();
+
+  @NonNull
+  public List<Point> getPoints(@NonNull final Series series) {
+    return seriesPoints.computeIfAbsent(series.getId(), ignore -> pointService.getPoints(series, request));
+  }
+
+  @NonNull
+  public List<Point> getLiteral(final double value) {
+    return literalPoints.computeIfAbsent(value, this::_generateLiteral);
+  }
+
+  @NonNull
+  private List<Point> _generateLiteral(final double value) {
+    final List<Point> points = new ArrayList<>();
+    for (ZonedDateTime date = request.begin.date; !date.isAfter(request.end.date); date = request.inner.plus(date, 1)) {
+      points.add(new Point(date, value));
+    }
+    return points;
+  }
+
+}

src/main/java/de/ph87/data/view/ViewService.java

@@ -0,0 +1,58 @@
+package de.ph87.data.view;
+
+import de.ph87.data.point.Point;
+import de.ph87.data.point.PointService;
+import de.ph87.data.series.SeriesRepository;
+import de.ph87.data.view.tree.View;
+import de.ph87.data.view.tree.ViewBinary;
+import de.ph87.data.view.tree.ViewSeries;
+import de.ph87.data.view.tree.ViewUnary;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.context.event.ApplicationReadyEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class ViewService {
+
+  private static final long DEMO_SERIES_POWER_BALANCE = 8L;
+
+  private static final long DEMO_SERIES_POWER_PRODUCED = 26L;
+
+  private static final String DEMO_POWER_CONSUMED = "__DEMO_POWER_CONSUMED__";
+
+  private final ViewRepository viewRepository;
+
+  private final PointService pointService;
+
+  private final SeriesRepository seriesRepository;
+
+  @Transactional
+  @EventListener(ApplicationReadyEvent.class)
+  public void init() {
+    if (!viewRepository.existsByName(DEMO_POWER_CONSUMED)) {
+      final View powerBalance = new ViewSeries(seriesRepository.findById(DEMO_SERIES_POWER_BALANCE).orElseThrow());
+      final View powerBalance2 = new ViewBinary(ViewBinary.Operation.PLUS, powerBalance, powerBalance);
+      final View powerPurchased = new ViewUnary(ViewUnary.Operation.NOT_NEG, powerBalance2);
+      final View powerProduced = new ViewSeries(seriesRepository.findById(DEMO_SERIES_POWER_PRODUCED).orElseThrow());
+      final View powerConsumed = viewRepository.save(new ViewBinary(ViewBinary.Operation.PLUS, powerPurchased, powerProduced));
+      powerConsumed.setName(DEMO_POWER_CONSUMED);
+      log.warn("DEMO VIEW CREATED: {} \"{}\"", powerConsumed.getUuid(), powerConsumed.getName());
+    }
+  }
+
+  @Transactional(readOnly = true)
+  public List<Point> getPoints(@NonNull final ViewPointRequest request) {
+    final ViewScope scope = new ViewScope(pointService, request);
+    final View view = viewRepository.findById(request.viewUuid).orElseThrow();
+    return view.getPoints(scope);
+  }
+
+}

src/main/java/de/ph87/data/view/tree/View.java

@@ -0,0 +1,37 @@
+package de.ph87.data.view.tree;
+
+import de.ph87.data.point.Point;
+import de.ph87.data.view.ViewScope;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.Setter;
+import lombok.ToString;
+
+import java.util.List;
+import java.util.UUID;
+
+@Entity
+@Getter
+@ToString
+@DiscriminatorColumn(name = "_type_")
+@Inheritance(strategy = InheritanceType.JOINED)
+public abstract class View {
+
+  @Id
+  private String uuid = UUID.randomUUID().toString();
+
+  @Version
+  private int version;
+
+  @Column(insertable = false, updatable = false)
+  private String _type_;
+
+  @Setter
+  @NonNull
+  @Column(nullable = false)
+  private String name = "";
+
+  public abstract List<Point> getPoints(final @NonNull ViewScope scope);
+
+}

src/main/java/de/ph87/data/view/tree/ViewBinary.java

@@ -0,0 +1,84 @@
+package de.ph87.data.view.tree;
+
+import de.ph87.data.point.Point;
+import de.ph87.data.view.ViewScope;
+import jakarta.persistence.*;
+import lombok.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.BiFunction;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@ToString(callSuper = true)
+@DiscriminatorValue("binary")
+public class ViewBinary extends View {
+
+  @NonNull
+  @Enumerated(EnumType.STRING)
+  private Operation operation;
+
+  @NonNull
+  @OneToOne(optional = false, orphanRemoval = true, cascade = CascadeType.ALL)
+  private View view0;
+
+  @NonNull
+  @OneToOne(optional = false, orphanRemoval = true, cascade = CascadeType.ALL)
+  private View view1;
+
+  public ViewBinary(@NonNull final Operation operation, @NonNull final View view0, @NonNull final View view1) {
+    this.operation = operation;
+    this.view0 = view0;
+    this.view1 = view1;
+  }
+
+  public enum Operation {
+    PLUS(Double::sum),
+    MINUS((a, b) -> a - b),
+    MULTIPLY((a, b) -> a * b),
+    DIVIDE((a, b) -> a / b),
+    MODULO((a, b) -> a % b),
+    PERCENT((a, b) -> a / b * 100),
+    ;
+
+    public final BiFunction<Double, Double, Double> function;
+
+    Operation(final BiFunction<Double, Double, Double> function) {
+      this.function = function;
+    }
+
+    @NonNull
+    public Point apply(@NonNull final Point a, @NonNull final Point b) {
+      return new Point(a.date, function.apply(a.value, b.value));
+    }
+
+  }
+
+  @Override
+  public List<Point> getPoints(final @NonNull ViewScope scope) {
+    final List<Point> pointsA = view0.getPoints(scope);
+    final List<Point> pointsB = view1.getPoints(scope);
+    final List<Point> result = new ArrayList<>(pointsA.size() + pointsB.size());
+    int indexA = 0;
+    int indexB = 0;
+    while (indexA < pointsA.size() && indexB < pointsB.size()) {
+      final Point pointA = pointsA.get(indexA);
+      final Point pointB = pointsB.get(indexB);
+      int cmp = pointA.date.compareTo(pointB.date);
+      if (cmp < 0) {
+        indexA++;
+      } else if (cmp > 0) {
+        indexB++;
+      } else {
+        result.add(operation.apply(pointA, pointB));
+        indexA++;
+        indexB++;
+      }
+    }
+    return result;
+  }
+
+}

src/main/java/de/ph87/data/view/tree/ViewBinaryDto.java

@@ -0,0 +1,27 @@
+package de.ph87.data.view.tree;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Getter
+@ToString(callSuper = true)
+public class ViewBinaryDto extends ViewDto {
+
+  @NonNull
+  public final ViewBinary.Operation operation;
+
+  @NonNull
+  public final ViewDto view0;
+
+  @NonNull
+  public final ViewDto view1;
+
+  public ViewBinaryDto(@NonNull final ViewBinary viewBinary) {
+    super(viewBinary);
+    this.operation = viewBinary.getOperation();
+    this.view0 = ViewDto.map(viewBinary.getView0());
+    this.view1 = ViewDto.map(viewBinary.getView1());
+  }
+
+}

src/main/java/de/ph87/data/view/tree/ViewDto.java

@@ -0,0 +1,34 @@
+package de.ph87.data.view.tree;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Getter
+@ToString
+public abstract class ViewDto {
+
+  public final String _type_;
+
+  public final String uuid;
+
+  public final String name;
+
+  protected ViewDto(@NonNull final View view) {
+    this._type_ = view.get_type_();
+    this.uuid = view.getUuid();
+    this.name = view.getName();
+  }
+
+  @NonNull
+  public static ViewDto map(@NonNull final View view) {
+    return switch (view) {
+      case final ViewLiteral viewLiteral -> new ViewLiteralDto(viewLiteral);
+      case final ViewSeries viewSeries -> new ViewSeriesDto(viewSeries);
+      case final ViewUnary viewUnary -> new ViewUnaryDto(viewUnary);
+      case final ViewBinary viewBinary -> new ViewBinaryDto(viewBinary);
+      default -> throw new RuntimeException("DTO mapping of View type not implemented: " + view.getClass());
+    };
+  }
+
+}

src/main/java/de/ph87/data/view/tree/ViewLiteral.java

@@ -0,0 +1,32 @@
+package de.ph87.data.view.tree;
+
+import de.ph87.data.point.Point;
+import de.ph87.data.view.ViewScope;
+import jakarta.persistence.Column;
+import jakarta.persistence.DiscriminatorValue;
+import jakarta.persistence.Entity;
+import lombok.*;
+
+import java.util.List;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@ToString(callSuper = true)
+@DiscriminatorValue("literal")
+public class ViewLiteral extends View {
+
+  @Column(name = "`value`", nullable = false)
+  private double value;
+
+  public ViewLiteral(final double value) {
+    this.value = value;
+  }
+
+  @Override
+  public List<Point> getPoints(final @NonNull ViewScope scope) {
+    return scope.getLiteral(value);
+  }
+
+}

src/main/java/de/ph87/data/view/tree/ViewLiteralDto.java

@@ -0,0 +1,18 @@
+package de.ph87.data.view.tree;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Getter
+@ToString(callSuper = true)
+public class ViewLiteralDto extends ViewDto {
+
+  public final double value;
+
+  public ViewLiteralDto(@NonNull final ViewLiteral viewLiteral) {
+    super(viewLiteral);
+    this.value = viewLiteral.getValue();
+  }
+
+}

src/main/java/de/ph87/data/view/tree/ViewSeries.java

@@ -0,0 +1,34 @@
+package de.ph87.data.view.tree;
+
+import de.ph87.data.point.Point;
+import de.ph87.data.series.Series;
+import de.ph87.data.view.ViewScope;
+import jakarta.persistence.DiscriminatorValue;
+import jakarta.persistence.Entity;
+import jakarta.persistence.ManyToOne;
+import lombok.*;
+
+import java.util.List;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@ToString(callSuper = true)
+@DiscriminatorValue("series")
+public class ViewSeries extends View {
+
+  @NonNull
+  @ManyToOne(optional = false)
+  private Series series;
+
+  public ViewSeries(@NonNull final Series series) {
+    this.series = series;
+  }
+
+  @Override
+  public List<Point> getPoints(final @NonNull ViewScope scope) {
+    return scope.getPoints(series);
+  }
+
+}

src/main/java/de/ph87/data/view/tree/ViewSeriesDto.java

@@ -0,0 +1,20 @@
+package de.ph87.data.view.tree;
+
+import de.ph87.data.series.SeriesDto;
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Getter
+@ToString(callSuper = true)
+public class ViewSeriesDto extends ViewDto {
+
+  @NonNull
+  public final SeriesDto series;
+
+  public ViewSeriesDto(@NonNull final ViewSeries viewSeries) {
+    super(viewSeries);
+    this.series = new SeriesDto(viewSeries.getSeries());
+  }
+
+}

src/main/java/de/ph87/data/view/tree/ViewUnary.java

@@ -0,0 +1,56 @@
+package de.ph87.data.view.tree;
+
+import de.ph87.data.point.Point;
+import de.ph87.data.view.ViewScope;
+import jakarta.persistence.*;
+import lombok.*;
+
+import java.util.List;
+import java.util.function.Function;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@ToString(callSuper = true)
+@DiscriminatorValue("unary")
+public class ViewUnary extends View {
+
+  @NonNull
+  @Enumerated(EnumType.STRING)
+  private Operation operation;
+
+  @NonNull
+  @OneToOne(optional = false, orphanRemoval = true, cascade = CascadeType.ALL)
+  private View view;
+
+  public ViewUnary(@NonNull final Operation operation, @NonNull final View view) {
+    this.operation = operation;
+    this.view = view;
+  }
+
+  public enum Operation {
+    NEG(a -> -a),
+    REC(a -> 1 / a),
+    NOT_NEG(a -> a < 0 ? 0 : a),
+    ;
+
+    public final Function<Double, Double> function;
+
+    Operation(final Function<Double, Double> function) {
+      this.function = function;
+    }
+
+    @NonNull
+    public Point apply(@NonNull final Point point) {
+      return new Point(point.date, function.apply(point.value));
+    }
+
+  }
+
+  @Override
+  public List<Point> getPoints(final @NonNull ViewScope scope) {
+    return view.getPoints(scope).stream().map(operation::apply).toList();
+  }
+
+}

src/main/java/de/ph87/data/view/tree/ViewUnaryDto.java

@@ -0,0 +1,23 @@
+package de.ph87.data.view.tree;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.ToString;
+
+@Getter
+@ToString(callSuper = true)
+public class ViewUnaryDto extends ViewDto {
+
+  @NonNull
+  public final ViewUnary.Operation operation;
+
+  @NonNull
+  public final ViewDto view;
+
+  public ViewUnaryDto(@NonNull final ViewUnary viewUnary) {
+    super(viewUnary);
+    this.operation = viewUnary.getOperation();
+    this.view = ViewDto.map(viewUnary.getView());
+  }
+
+}

src/main/java/de/ph87/data/weather/WeatherService.java

@@ -1,19 +1,26 @@
 package de.ph87.data.weather;
 
-import com.fasterxml.jackson.databind.*;
-import lombok.*;
-import lombok.extern.slf4j.*;
-import org.springframework.boot.context.event.*;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.context.event.ApplicationStartedEvent;
 import org.springframework.context.event.EventListener;
-import org.springframework.scheduling.annotation.*;
-import org.springframework.stereotype.*;
+import org.springframework.scheduling.annotation.EnableScheduling;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
 
-import java.io.*;
-import java.net.*;
-import java.nio.charset.*;
-import java.time.*;
-import java.time.format.*;
-import java.util.*;
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URI;
+import java.nio.charset.StandardCharsets;
+import java.time.LocalDate;
+import java.time.LocalTime;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
+import java.util.List;
 
 @Slf4j
 @Service
@@ -53,8 +60,8 @@ public class WeatherService {
       }
       days = newDays;
       log.info("Weather update complete");
-    } catch (IOException e) {
-      log.error(e.toString());
+    } catch (Exception e) {
+      log.error("Failed fetching Weather data: {}", e.toString());
     }
   }