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import { TwinpadApiService } from '../../services/twinpad-api.service';
import { NumberSignalData, SignalSample, SignalsData, StringSignalData } from '../../models/signals';
import { FormsModule } from '@angular/forms';
import type { DataZoomComponentOption, EChartsOption, LineSeriesOption } from 'echarts';
import { NgxEchartsDirective, provideEchartsCore } from 'ngx-echarts';
import * as echarts from 'echarts/core';
import { Subscription } from 'rxjs';
import { saveAs } from 'file-saver';
import { DatePipe, NgIf } from '@angular/common';
import { DurationPipe } from '../../pipes/duration.pipe';
import { LineChart } from 'echarts/charts';
import { CanvasRenderer } from 'echarts/renderers';
import { GridComponent, TitleComponent, ToolboxComponent, DataZoomComponent, LegendComponent } from 'echarts/components';
import { HttpErrorResponse } from '@angular/common/http';
import { ErrorComponent } from '../error/error.component';
import { LineStyle, SignalAppearance } from '../../models/colorSetting';
import { ThemesComponent } from '../themes/themes.component';
import { Drawer } from 'primeng/drawer';
echarts.use([LineChart, GridComponent, CanvasRenderer, TitleComponent, ToolboxComponent, DataZoomComponent, LegendComponent]);
@Component({
selector: 'app-signals-graph',
imports: [FormsModule, NgxEchartsDirective, DatePipe, DurationPipe, ErrorComponent, NgIf, Drawer, ThemesComponent],
providers: [provideEchartsCore({ echarts })],
templateUrl: './signals-graph.component.html',
styleUrl: './signals-graph.component.scss'
})
export class SignalsGraphComponent implements OnInit, OnChanges, OnDestroy{
isLoading: boolean;
error: HttpErrorResponse | null = null;
@Input() signalIdsToPlot: string[];
@Input() isLive: boolean=true;
@Input() refreshTime: number=5;
@Input() requestedWindowMinTs: number;
@Input() requestedWindowMaxTs: number;
@Input() liveWindow: number = 60;
@Input() showLegend: boolean=true;
@Input() refreshMode: string;
signalsData: SignalsData;
options: EChartsOption;
updateOptions: EChartsOption;
dataSubscription: Subscription;
firstSampleSubscription: Subscription;
private chart!: echarts.ECharts;
windowMinTs: number;
windowMaxTs: number;
windowStartValue: number;
windowEndValue: number;
dataMinTs: number;
dataMaxTs: number;
liveMinTs: number;
lastGraphRefreshTs: number;
isYAxisScaling: boolean = true;
updateYAxisScaling: boolean = false;
labels: string[] = [];
firstSamples: SignalSample[] | undefined;
signalsForcibilities: Map<string, boolean>;
signalsGraphThemes: Map<string, SignalAppearance> = new Map();
defaultGraphColors = ['#5470c6', '#91cc75', '#fac858', '#ee6666', '#73c0de', '#3ba272', '#fc8452', '#9a60b4', '#ea7ccc'];
displayThemeBuilder: boolean = false;
@Output() dataDateMin: EventEmitter<Date> = new EventEmitter();
@Output() dataDateMax: EventEmitter<Date> = new EventEmitter();
@Output() windowMiddleDate: EventEmitter<Date> = new EventEmitter();
@Output() isResponseSlowerThanRefresh: EventEmitter<boolean> = new EventEmitter();
@Output() hasFinishedDonwloading: EventEmitter<boolean> = new EventEmitter();
constructor(private twinpadApiService: TwinpadApiService) {}
ngOnInit() {
this.isLoading = true;
this.signalsForcibilities = new Map();
// First, fetch signals data type to configure Str Y Axis
this.options = this.generateOptions();
this.updateData();
if (this.signalIdsToPlot.length == 0){
this.isLoading = false;
}
}
onChartInit(ec: echarts.ECharts) {
this.chart = ec;
this.chart.on('dataZoom', (_: any) => { // eslint-disable-line
const option = this.chart.getOption() as EChartsOption;
if(option !== undefined && option.dataZoom !== undefined) {
const dataZoom = option.dataZoom as DataZoomComponentOption[];
this.windowStartValue = dataZoom[0]['startValue'] as number;
this.windowEndValue = dataZoom[0]['endValue'] as number;
}
// Move this to window update?
if (this.dataMinTs !== undefined && this.dataMaxTs !== undefined){
this.windowMinTs = this.windowStartValue;
this.windowMaxTs = this.windowEndValue;
}
this.windowMiddleDate.emit(new Date(500*(this.windowMinTs+this.windowMaxTs)));
});
}
ngOnChanges(changes: SimpleChanges): void {
this.dataSubscription?.unsubscribe();
this.firstSampleSubscription?.unsubscribe();
this.firstSamples = undefined;
if (this.requestedWindowMinTs !== undefined){
this.windowMinTs = this.requestedWindowMinTs;
}
if (this.requestedWindowMaxTs !== undefined){
this.windowMaxTs = this.requestedWindowMaxTs;
}
let shouldUpdateData = true;
if ("isLive" in changes){
if (changes["isLive"]["currentValue"] === false){
shouldUpdateData = false;
}
}
if (this.signalIdsToPlot?.length > 0) {
this.twinpadApiService.getSignals(0, 0, null, null, this.signalIdsToPlot).subscribe(
signalsData => {
const labels = new Set<string>();
for (const signal of signalsData.items){
for (const enumOption of signal.stringEnumOptions())
labels.add(enumOption);
}
const newLabels = Array.from(labels);
Eif (this.labels != newLabels){
shouldUpdateData = true;
}
this.labels = newLabels;
Eif (shouldUpdateData){
this.isLoading = true;
this.updateData();
}
}
);
this.twinpadApiService.getSignalsForcibility(this.signalIdsToPlot).subscribe({
next: forcibilities => {
this.signalsForcibilities = forcibilities;
}
});
this.updateGraphThemes();
}
else if (this.options !== undefined) {
this.options.legend = {};
this.options.series = [];
Iif (this.chart){
// Pass changes through options updates
this.chart.setOption(this.options, true);
}
}
}
/**
* fetch signalData drom signals to plot and trigger graph update
* Make the api subscription
*/
updateData() {
if (this.signalIdsToPlot === undefined || this.signalIdsToPlot.length === 0 || this.signalsData === undefined) {
this.signalsData = new SignalsData([], null, null);
this.updateGraphForce();
}
else {
this.firstSampleSubscription?.unsubscribe();
this.twinpadApiService.getSignalFirstValues(this.signalIdsToPlot).subscribe(value => {
this.firstSamples = value;
});
this.subscribeData();
}
}
subscribeData(initialDelay?:number){
this.dataSubscription?.unsubscribe();
if (this.refreshMode === "Single-point" && this.isLive) {
this.dataSubscription = this.twinpadApiService.callPeriodically(
() => {
this.updateWindowBounds();
return this.twinpadApiService.getSignalValuesWithInterestWindow(this.signalIdsToPlot, this.windowMinTs);
}, 1000 * this.refreshTime, initialDelay).subscribe({
next: (value) => {
this.error = null;
// check if data request time is longer than refresh time
// subscribe happens every 1000*refreshTime, so time spent requesting data = difference_between_two_timings - refresh time
this.isResponseSlowerThanRefresh.emit(Date.now() - (this.lastGraphRefreshTs + this.refreshTime * 1000) > this.refreshTime * 1000);
// Data return callback
let shouldForce = false;
if (this.signalsData === undefined || this.signalsData.signals_data === undefined || this.signalsData.signals_data.length !== value?.length) {
shouldForce = true;
}
this.updateSignalsData(value);
this.updateDataTimestampBoundaries();
if (shouldForce) {
this.updateGraphForce();
}
else {
this.updateGraph();
}
this.lastGraphRefreshTs = Date.now();
},
error: (error) => {
this.error = error;
this.subscribeData(2000);
}
});
}
else {
this.dataSubscription = this.twinpadApiService.callPeriodically(
() => {
let tsMin = null;
let tsMax = null;
this.updateWindowBounds();
if (this.windowMinTs !== undefined && this.windowMaxTs !== undefined) {
tsMax = this.windowMaxTs + 5;
tsMin = this.windowMinTs - 5;
}
if (this.isLive) {
switch (this.refreshMode) {
case "Latest points":
return this.twinpadApiService.getSignalsData(this.signalIdsToPlot, 100, this.windowMaxTs - this.refreshTime, this.windowMaxTs, false);
default:
return this.twinpadApiService.getSignalsData(this.signalIdsToPlot, 800, this.windowMinTs, this.windowMaxTs, true);
}
}
else {
return this.twinpadApiService.getSignalsDataWithInterestWindow(this.signalIdsToPlot, 800, 200, this.windowMinTs, this.windowMaxTs, tsMin, tsMax);
}
}, 1000 * this.refreshTime, initialDelay).subscribe({
next: (value) => {
this.error = null;
// check if data request time is longer than refresh time
// subscribe happens every 1000*refreshTime, so time spent requesting data = difference_between_two_timings - refresh time
this.isResponseSlowerThanRefresh.emit(Date.now() - (this.lastGraphRefreshTs + this.refreshTime * 1000) > this.refreshTime * 1000);
// Data return callback
let shouldForce = false;
if (this.signalsData === undefined || this.signalsData.signals_data === undefined || this.signalsData?.signals_data.length != value?.signals_data.length) {
shouldForce = true;
}
this.updateSignalsData(value);
this.updateDataTimestampBoundaries();
if (shouldForce) {
this.updateGraphForce();
}
else {
this.updateGraph();
}
this.lastGraphRefreshTs = Date.now();
},
error: (error) => {
this.error = error;
this.subscribeData(2000);
}
});
}
}
updateSignalsData(newBatch: SignalsData | SignalSample[]) {
if (!this.isLive) {
this.signalsData = newBatch as SignalsData;
return;
}
Iif (this.signalsData === undefined) {
this.signalsData = new SignalsData([], null, null);
}
if ((<SignalSample[]>newBatch)?.length !== undefined) {
this.signalsData.push(newBatch as SignalSample[]);
}
else Eif (newBatch !== undefined) {
if (this.refreshMode === "Full window") {
this.signalsData = newBatch as SignalsData;
return;
}
this.signalsData.concat(newBatch as SignalsData);
}
const delayMargin = 0.1;
this.signalsData.pruneDeselectedSignals(this.signalIdsToPlot);
for (const signalData of this.signalsData.signals_data) {
// remove outdated points with a delay margin
signalData.time_vector = signalData.time_vector.filter(ts => ts >= this.windowMinTs - delayMargin);
// count number of points off to the left of the graph and replace them by one point right on the edge
const numberInvisiblePoints = signalData.time_vector.filter(ts => ts < this.windowMinTs).length;
for (let i = 0; i < numberInvisiblePoints; i++) {
signalData.time_vector.shift();
}
Iif (numberInvisiblePoints > 0) {
signalData.time_vector.unshift(this.windowMinTs);
}
// adjust to the new length after having removed values
while (signalData.values.length > signalData.time_vector.length) {
signalData.values.shift();
signalData.forced_values.shift();
}
signalData.number_samples = signalData.time_vector.length;
}
}
generateOptions(): any{ // eslint-disable-line
const series: LineSeriesOption[] = [];
const legend: string[] = [];
const legendSelection: { [id: string]: boolean } = {};
Eif(this.signalIdsToPlot !== undefined){
for (const signalId of this.signalIdsToPlot){
legend.push(signalId);
legendSelection[signalId] = true;
series.push({
name: signalId,
type: 'line',
smooth: false,
symbol: 'none',
data: []});
const forcedValueName = signalId + ' forced value';
legend.push(forcedValueName);
legendSelection[forcedValueName] = false;
series.push({
name: forcedValueName,
type: 'line',
smooth: false,
symbol: 'none',
data: []});
}
}
const options: EChartsOption = {
animation: false,
grid: {
left: 0,
right: 60,
top: 40,
containLabel: true,
},
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'cross',
axis: 'x',
snap: true,
},
valueFormatter: function(value) {
const tooltipValue = value?.toString() ?? "0";
// it received a timestamp:
if (!Number.isNaN(tooltipValue) && Date.now() / 1000 - +(tooltipValue) < 86400) {
const date = +(tooltipValue) * 1000;
const datepipe = new DatePipe("en-US");
return datepipe.transform(date, "HH:mm:ss.SSS") ?? "";
}
return tooltipValue;
}
},
toolbox: {
show: false,
feature: {
dataZoom: {
yAxisIndex: 'none'
},
restore: {},
saveAsImage: {name: 'twinpad_signals'}
}
},
xAxis: {
type: 'value',
minorTick: {
show: true
},
splitLine: {
show: true,
lineStyle: {type: 'solid', width:0.3}
},
minorSplitLine: {
show: true,
lineStyle: {type: 'dashed', width:0.3}
},
axisLabel: {
formatter: function(value){
const datepipe = new DatePipe("en-US");
return datepipe.transform(value * 1000, "yyyy/MM/dd - HH:mm:ss") ?? `${value}`;
}
},
axisPointer: {
label: {
formatter: function(params) {
const value = +params.value.toString() * 1000;
const datepipe = new DatePipe("en-US");
return datepipe.transform(value, "yyyy/MM/dd - HH:mm:ss.SSS") ?? `${params.value}`;
}
}
}
},
dataZoom: this.computeDataZoom(),
series: series
};
this.updateYAxis(options);
Eif (this.showLegend){
options.legend = {data: legend, selectedMode: "multiple", type: 'scroll', selected: legendSelection};
}
if (this.signalIdsToPlot === undefined || this.signalIdsToPlot.length == 0){
options.title = {
text: 'No signal selected',
textAlign: 'center',
left: '50%',
top: '40%',
textStyle: {
fontSize: 30
}
};
}
return options;
}
/**
* Update dataMinTs and dataMaxTs according to signal data
* also update windowMinTs and xMaxTs from component input (requested)
*/
updateDataTimestampBoundaries(){
if (this.signalsData.data_start !== null){
this.dataMinTs = this.signalsData.data_start;
}
if (this.signalsData.data_end !== null){
this.dataMaxTs = this.signalsData.data_end;
}
else{
this.dataMaxTs = Date.now() * 0.001;
}
// Emitting new dates
this.dataDateMin.emit(new Date(1000*this.dataMinTs));
this.dataDateMax.emit(new Date(1000*this.dataMaxTs));
}
computeDataZoom(){
return [
{
type: 'slider',
start: 0,
end: 100,
xAxisIndex: 0,
zoomOnMouseWheel: false,
show: false
},
{
type: 'inside',
start: 0,
end: 100,
xAxisIndex: 0,
zoomOnMouseWheel: false,
},
{
type: 'slider',
start: 0,
end: 100,
yAxisIndex: 0,
zoomOnMouseWheel: false
},
{
type: 'inside',
start: 0,
end: 100,
yAxisIndex: 0,
zoomOnMouseWheel: false
}
];
}
computeSeries(): LineSeriesOption[]{
const series: LineSeriesOption[] = [];
const signalsData = this.signalsData.copy(); // Copy to avoid concurrent update
if (signalsData.signals_data !== undefined && signalsData.signals_data.length > 0){
for (let isignal = 0; isignal < this.signalIdsToPlot.length; isignal++){
const signalData: StringSignalData|NumberSignalData = signalsData.signals_data[isignal];
if (signalData === undefined) {
continue;
}
const [data, forced_data] = signalData.echartsSerieData();
Eif (this.firstSamples !== undefined){
data.unshift([1000*this.firstSamples[isignal].timestamp, this.firstSamples[isignal].value]);
}
let yAxisIndex: number = 0;
if (signalData instanceof StringSignalData){
yAxisIndex = 1;
}
const signalId = this.signalIdsToPlot[isignal];
const signalThemeToApply = this.signalsGraphThemes.get(signalId);
const valueOptions: LineSeriesOption = {
name: signalId,
type: 'line',
smooth: false,
symbol: 'none',
yAxisIndex: yAxisIndex,
data: data,
};
const forcedValueOptions: LineSeriesOption = {
name: signalId + " forced value",
type: 'line',
smooth: false,
symbol: 'none',
yAxisIndex: yAxisIndex,
data: forced_data,
};
Eif (signalThemeToApply !== undefined) {
valueOptions.itemStyle = { color: signalThemeToApply.value_color };
valueOptions.lineStyle = { color: signalThemeToApply.value_color, type: signalThemeToApply.value_line_style };
forcedValueOptions.itemStyle = { color: signalThemeToApply.forced_value_color };
forcedValueOptions.lineStyle = { color: signalThemeToApply.forced_value_color, type: signalThemeToApply.forced_value_line_style };
}
series.push(valueOptions);
if (this.signalsForcibilities.get(this.signalIdsToPlot[isignal])) {
series.push(forcedValueOptions);
}
}
}
return series;
}
updateGraphForce(){
this.isLoading = true;
const series = this.computeSeries();
this.options = this.generateOptions();
this.options.series = series;
if (this.chart){
// Pass changes through options updates
this.chart.setOption(this.options, true);
}
// Force update: a bit ugly but works
this.updateGraph();
this.isLoading = false;
}
updateWindowBounds(){
if (this.isLive){
this.windowMaxTs = Date.now()/1000;
this.windowMinTs = this.windowMaxTs - this.liveWindow;
}
else{
if (this.windowMinTs === undefined){
Iif (this.requestedWindowMinTs !== undefined){
this.windowMinTs = this.requestedWindowMinTs;
}
}
if (this.windowMaxTs === undefined){
Iif (this.requestedWindowMaxTs !== undefined){
this.windowMaxTs = this.requestedWindowMaxTs;
}
}
}
}
updateGraph(){
const series = this.computeSeries();
const dataZoom = [
{type: "slider", startValue: this.windowMinTs, endValue: this.windowMaxTs, zoomOnMouseWheel:!this.isLive, zoomLock:this.isLive, disabled:this.isLive},
{type: "inside", startValue: this.windowMinTs, endValue: this.windowMaxTs, zoomOnMouseWheel:!this.isLive, zoomLock:this.isLive, disabled:this.isLive}
];
this.updateOptions = {
dataZoom: dataZoom,
series: series,
};
if (this.updateYAxisScaling) {
this.updateYAxis(this.updateOptions);
this.updateYAxisScaling = false;
}
this.isLoading = false;
}
downloadSignalsZip(format: string){
this.twinpadApiService.downloadSignalsDataZip(format, this.signalIdsToPlot, this.windowMinTs, this.windowMaxTs).subscribe({
next: blob => {
this.hasFinishedDonwloading.emit(true);
saveAs(blob, 'signals-data_'+format+'.zip');
},
error: error => {
console.error('Error downloading the blob', error);
}
});
}
downloadSignalsHDF5(){
this.twinpadApiService.downloadSignalsDataHDF5(this.signalIdsToPlot, this.windowMinTs, this.windowMaxTs).subscribe({
next: blob => {
this.hasFinishedDonwloading.emit(true);
saveAs(blob, 'signals-data.hdf5');
},
error: error => {
console.error('Error downloading the blob', error);
}
});
}
toggleYAxisScaling() {
this.isYAxisScaling = !this.isYAxisScaling;
this.updateYAxisScaling = true;
}
updateYAxis(options: EChartsOption) {
options.yAxis = [
{
type: 'value',
id: "0",
show: true,
splitNumber: 10,
position: 'right',
minorTick: {
show: true
},
splitLine: {
show: true,
lineStyle: {type: 'solid', width:0.3}
},
minorSplitLine: {
show: false,
lineStyle: {type: 'dashed', width:0.3}
},
scale: this.isYAxisScaling,
boundaryGap: ['5%', '5%']
},
{
type: 'category',
show: this.labels.length>0, //begin without
axisTick: {"alignWithLabel": true},
id: "1",
position: 'left',
data: this.labels,
}
];
}
toggleThemeBuilder() {
this.displayThemeBuilder = !this.displayThemeBuilder;
}
updateGraphThemes() {
this.twinpadApiService.getSignalsGraphThemes(this.signalIdsToPlot).subscribe({
next: graphThemes => {
this.signalsGraphThemes.clear();
for (const [key, value] of Object.entries(graphThemes)) {
this.signalsGraphThemes.set(key, value);
}
// When disabling a theme, the line styles are not set back to default values
// To fix this, we take the default colors from echarts and set them for the signals
for (let i = 0; i < this.signalIdsToPlot.length; i++) {
const signalId = this.signalIdsToPlot[i];
if (this.signalsGraphThemes.get(signalId) === undefined) {
const signalNumber = i * 2;
const defaultTheme = new SignalAppearance();
defaultTheme.value_color = this.defaultGraphColors[signalNumber % this.defaultGraphColors.length];
defaultTheme.forced_value_color = this.defaultGraphColors[(signalNumber + 1) % this.defaultGraphColors.length];
defaultTheme.value_line_style = LineStyle.solid;
defaultTheme.forced_value_line_style = LineStyle.solid;
this.signalsGraphThemes.set(signalId, defaultTheme);
}
}
}
});
}
ngOnDestroy() {
this.dataSubscription?.unsubscribe();
}
}
|