1 | import { Subject } from 'rxjs';
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2 |
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3 | import { DI } from '@leanup/lib';
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4 |
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5 | import { MeasuredItemModel } from '../../models/measured-item.model';
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6 | import { MeasuredSerieModel } from '../../models/measured-series.model';
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7 | import { StorageService } from '../storage/service';
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8 |
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9 | interface MeasurementInterface {
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10 | date: Date;
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11 | value: number;
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12 | }
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13 |
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14 | interface MeasuredSerieInterface {
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15 | title: string;
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16 | unit: string;
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17 | id: number;
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18 | measurements: MeasurementInterface[];
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19 | }
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20 |
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21 | export class MeasurementService {
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22 | private measuredSeries: MeasuredSerieModel[] = [];
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23 | private readonly storageStorage: StorageService = DI.get<StorageService>('StorageService');
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24 | public readonly observe: Subject<MeasuredSerieModel[]> = new Subject();
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25 |
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26 | public constructor() {
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27 | this.restore();
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28 | }
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29 |
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30 | public getSeries(): MeasuredSerieModel[] {
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31 | this.restore();
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32 | return this.measuredSeries;
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33 | }
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34 |
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35 | public getSerie(id: number): MeasuredSerieModel {
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36 | const measuredSerie = this.measuredSeries.find((measuredSerie: MeasuredSerieModel) => {
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37 |
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38 | return measuredSerie.getId() == id;
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39 | });
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40 | if (measuredSerie instanceof MeasuredSerieModel) {
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41 | return measuredSerie;
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42 | } else {
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43 | throw new Error(`No measured serie of id ${id} found.`);
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44 | }
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45 | }
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46 |
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47 | public addSerie(serie: MeasuredSerieModel): void {
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48 | if (serie instanceof MeasuredSerieModel) {
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49 | this.measuredSeries.push(serie);
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50 | this.store();
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51 | } else {
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52 | throw new Error(`The measuring serie is not valid!`);
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53 | }
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54 | }
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55 |
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56 | public removeSerie(serie: MeasuredSerieModel): void {
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57 | const index = this.measuredSeries.indexOf(serie);
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58 | if (index >= 0) {
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59 | this.measuredSeries.splice(index, 1);
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60 | this.store();
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61 | }
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62 | }
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63 |
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64 | private restore(): void {
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65 | let series: MeasuredSerieInterface[] = <MeasuredSerieInterface[]>this.storageStorage.getItem('measuredSeries');
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66 | this.measuredSeries = [];
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67 | if (Array.isArray(series) === false) {
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68 | series = [];
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69 | }
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70 | series.forEach((serie: MeasuredSerieInterface) => {
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71 | const measuredSerie = new MeasuredSerieModel(serie.title, serie.unit);
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72 | if (typeof serie.id === 'number') {
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73 | measuredSerie.setId(serie.id);
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74 | }
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75 | if (Array.isArray(serie.measurements)) {
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76 | serie.measurements.forEach((measurement: MeasurementInterface) => {
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77 | measuredSerie.addMeasurement(new MeasuredItemModel(measurement.date, measurement.value));
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78 | });
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79 | }
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80 | this.measuredSeries.push(measuredSerie);
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81 | });
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82 | }
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83 |
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84 | public store(): void {
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85 | const series: Object[] = [];
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86 | this.measuredSeries.forEach((measuredSerie: MeasuredSerieModel) => {
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87 | const measurements: Object[] = [];
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88 | measuredSerie.getMeasurements().forEach((measurement: MeasuredItemModel) => {
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89 | measurements.push({
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90 | date: measurement.getDate(),
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91 | value: measurement.getValue(),
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92 | });
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93 | });
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94 | series.push({
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95 | id: measuredSerie.getId(),
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96 | measurements,
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97 | title: measuredSerie.getTitle(),
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98 | unit: measuredSerie.getUnit(),
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99 | });
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100 | });
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101 | this.storageStorage.setItem('measuredSeries', series);
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102 | this.observe.next([]);
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103 | }
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104 | }
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