All files / src/app/components/signals-values-table signals-values-table.component.ts

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import { Component, OnDestroy, OnInit, ViewChild, AfterViewInit, inject } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { DatePipe, NgFor, NgIf } from '@angular/common';
import { ActivatedRoute, Router } from '@angular/router';
 
import { Subscription } from 'rxjs';
 
import { TableModule, TableRowReorderEvent } from 'primeng/table';
import { MultiSelectModule } from 'primeng/multiselect';
import { DialogModule } from 'primeng/dialog';
import { ButtonModule } from 'primeng/button';
import { Badge } from 'primeng/badge';
import { SliderModule } from 'primeng/slider';
import { SelectModule } from 'primeng/select';
 
import { SignalCardComponent } from '../signal-card/signal-card.component';
import { MultiSelectSignalsComponent } from '../multi-select-signals/multi-select-signals.component';
import { RefreshRateSelectorComponent } from '../refresh-rate-selector/refresh-rate-selector.component';
import { TwinpadApiService } from '../../services/twinpad-api.service';
import { DurationOption, Signal, SignalSample } from '../../models/signals';
import { getSeverity, getDistinctElements } from '../../utils/utils';
 
 
interface Column {
  label: string;
  field: string;
}
 
class FlatSignalAndSample extends Signal {
  device_name: string;
  timestamp: number;
  value: number | string;
  forced_value: number | string;
 
  constructor(signal: Signal) {
    super();
    this.signal_id = signal.signal_id;
    this.type = signal.type;
    this.unit = signal.unit;
    this.frequency = signal.frequency;
    this.description = signal.description;
    this.status = signal.status;
    this.data_type = signal.data_type;
    this.device = signal.device;
    this.precision_digits = signal.precision_digits;
    this.forcible = signal.forcible;
  }
 
  updateValues(sample: SignalSample) {
    this.timestamp = sample?.timestamp;
    this.value = sample?.value;
    this.forced_value = sample?.forced_value;
  }
}
 
 
@Component({
  selector: 'app-signals-values-table',
  imports: [TableModule, MultiSelectModule, FormsModule, NgFor, NgIf, DialogModule, SignalCardComponent, ButtonModule, MultiSelectSignalsComponent, RefreshRateSelectorComponent, Badge, DatePipe, SliderModule, SelectModule],
  templateUrl: './signals-values-table.component.html',
  styleUrl: './signals-values-table.component.scss'
})
export class SignalsValuesTableComponent implements OnInit, AfterViewInit, OnDestroy {
  private twinpadApiService = inject(TwinpadApiService);
  private router = inject(Router);
  private route = inject(ActivatedRoute);
 
  @ViewChild(MultiSelectSignalsComponent) multiSelectSignals!: MultiSelectSignalsComponent;
  isLoading: boolean;
 
  signalIdsToDisplay: string[];
  extendedSignalsById: Map<string, FlatSignalAndSample>;
  frequencies: number[] = [];
  frequencyThresholds: number[] = [0, 0];
  units: string[];
  types: string[];
  precisionDigits: string[];
  statuses: string[];
 
  columns: Column[];
  selectedColumns: Column[];
  rows: FlatSignalAndSample[];
 
  selectedSignal: Signal | null = null;
  signalDialogVisible: boolean;
 
  valuesSubscription: Subscription;
  signalToDeviceSubscription: Map<Signal, Subscription>;
 
  refreshTime: DurationOption;
  lastGraphRefreshTs: number;
  isResponseSlowerThanRefresh: boolean = false;
 
  signalsSelectionLimit: number = 50;
 
  ngOnInit(): void {
    this.rows = [];
    this.extendedSignalsById = new Map();
    this.signalToDeviceSubscription = new Map();
 
    this.columns = [
      { field: 'value', label: 'Value' },
      { field: 'forced_value', label: 'Forced value' },
      { field: 'unit', label: 'Unit' },
      { field: 'frequency', label: 'Frequency' },
      { field: 'type', label: 'Type' },
      { field: 'precision_digits', label: 'Precision Digits' },
      { field: 'status', label: 'Status' }
    ];
 
    this.selectedColumns = this.columns.slice(0, 3);
  }
 
  ngAfterViewInit(): void {
    this.route.queryParams.subscribe(params => {
      const signalIds = params["signal_id"];
      if (signalIds) {
        Eif (signalIds instanceof Array) {
          this.signalIdsToDisplay = signalIds;
        }
        else {
          this.signalIdsToDisplay = [signalIds];
        }
        this.onSignalsChange();
      }
      else {
        this.signalIdsToDisplay = [];
      }
    });
  }
 
  showSignal(signal: Signal) {
    this.selectedSignal = signal;
    this.signalDialogVisible = true;
    this.router.navigate([], {
      fragment: signal.signal_id,
      queryParamsHandling: 'preserve'
    });
  }
 
  hideSignal() {
    this.selectedSignal = null;
    this.route.fragment.subscribe(fragment => {
      if (fragment) {
        const el = document.getElementById(fragment);
        if (el) {
          el.scrollIntoView({ behavior: 'smooth', block: 'end' });
        }
      }
    });
  }
 
  onSignalsChange() {
    this.isLoading = true;
    this.twinpadApiService.getSignals(this.signalsSelectionLimit, 0, null, null, this.signalIdsToDisplay, null).subscribe({
      next: signals => {
        const rows = [];
        for (const signal of signals.items) {
          const newFlatSignal = new FlatSignalAndSample(signal);
          this.extendedSignalsById.set(signal.signal_id, newFlatSignal);
          rows.push(newFlatSignal);
        }
        this.rows = rows;
        this.updateSliders();
        this.getDeviceNameFromSignals();
        this.updateValuesSubscription();
        this.isLoading = false;
      }
    });
  }
 
  updateValuesSubscription() {
    this.valuesSubscription?.unsubscribe();
    this.valuesSubscription = this.twinpadApiService.callPeriodically(() => { return this.twinpadApiService.getSignalValues(this.signalIdsToDisplay); }, 1000 * this.refreshTime.duration)
      .subscribe({
        next: samples => {
          this.isResponseSlowerThanRefresh = Date.now() - (this.lastGraphRefreshTs + this.refreshTime.duration * 1000) > this.refreshTime.duration * 1000;
 
          for (let i = 0; i < this.signalIdsToDisplay.length; i++) {
            const flatSignal = this.extendedSignalsById.get(this.signalIdsToDisplay[i]);
            Eif (flatSignal !== undefined) {
              flatSignal.updateValues(samples[i]);
            }
          }
          this.lastGraphRefreshTs = Date.now();
        }
      });
  }
 
  getDeviceNameFromSignals() {
    this.twinpadApiService.devicesBehaviorSubject$.subscribe({
      next: devices => {
        for (const signalId of this.signalIdsToDisplay) {
          const flatSignal = this.extendedSignalsById.get(signalId);
          Eif (flatSignal !== undefined) {
            const firstSegment = signalId.split('.')[0];
            const device = devices.find(device => device.device_id === firstSegment);
            if (device !== undefined) {
              flatSignal.device_name = device.name;
            }
            else Eif (firstSegment.includes("storage")) {
              const serviceName = firstSegment.replace("_", " ");
              flatSignal.device_name = serviceName[0].toLocaleUpperCase() + serviceName.substring(1).toLocaleLowerCase();
            }
          }
        }
      }
    });
  }
 
  getSeverity(status: string) {
    return getSeverity(status);
  }
 
  handleSignalsLoaded() {
    for (const flatSignal of this.extendedSignalsById.values()) {
      if (flatSignal.device_name === undefined) {
        this.getDeviceNameFromSignals();
        return;
      }
    }
  }
 
  handleRefreshRateChange(selected: DurationOption) {
    this.refreshTime = selected;
    if (this.signalIdsToDisplay) {
      this.onSignalsChange();
    }
  }
 
  onRowReorder(event: TableRowReorderEvent) {
    if (event.dragIndex !== undefined && event.dropIndex !== undefined) {
      const elements = this.signalIdsToDisplay.splice(event.dragIndex, 1);
      this.signalIdsToDisplay.splice(event.dropIndex, 0, elements[0]);
    }
    this.onSignalsChange();
  }
 
  ngOnDestroy() {
    this.valuesSubscription?.unsubscribe();
  }
 
  updateSliders() {
    this.frequencies = getDistinctElements(this.rows.map(flatSignal => flatSignal.frequency));
    this.units = getDistinctElements(this.rows.map(flatSignal => flatSignal.unit ?? "")).filter(unit => unit !== "");
    this.types = getDistinctElements(this.rows.map(flatSignal => flatSignal.type));
    this.precisionDigits = getDistinctElements(this.rows.map(flatSignal => flatSignal.precision_digits?.toString() ?? "")).filter(unit => unit !== "");
    this.statuses = getDistinctElements(this.rows.map(flatSignal => flatSignal.status.status));
 
    this.frequencyThresholds[0] = this.getArrayMin(this.frequencies);
    this.frequencyThresholds[1] = this.getArrayMax(this.frequencies);
  }
 
  getArrayMin(array: number[]): number {
    return Math.min.apply(null, array);
  }
 
  getArrayMax(array: number[]): number {
    return Math.max.apply(null, array);
  }
}