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import { PID, PIDInterface, Sensor } from '../../models/pid';
import { Component as PIDComponent } from '../../models/pid';
import { Canvas } from '../../models/canvas';
import { TwinpadApiService } from '../../services/twinpad-api.service';
import { Signal, SignalSample } from '../../models/signals';
import { Subscription } from 'rxjs';
import { ActivatedRoute } from '@angular/router';
import { EmptyPlaceholderComponent } from '../empty-placeholder/empty-placeholder.component';
import { DrawerModule } from 'primeng/drawer';
import { SignalCardComponent } from '../signal-card/signal-card.component';
import { HttpErrorResponse } from '@angular/common/http';
import { Device } from '../../models/devices';
import { ErrorComponent } from '../error/error.component';
@Component({
selector: 'app-pid',
imports: [DrawerModule, SignalCardComponent, EmptyPlaceholderComponent, ErrorComponent],
providers: [],
templateUrl: './pid.component.html',
styleUrl: './pid.component.scss'
})
export class PidComponent implements OnInit, OnDestroy {
private twinpadApiService = inject(TwinpadApiService);
private route = inject(ActivatedRoute);
@ViewChild('pidCanvas', { static: true }) pidCanvas!: ElementRef<HTMLCanvasElement>;
private context!: CanvasRenderingContext2D;
pid: PID;
@Input() deviceId: string;
deviceSubscription: Subscription;
canvas: Canvas;
signalValues: SignalSample[];
signalsSubscription: Subscription;
device_id: string;
commandSignal: Signal | undefined;
commandLoading: boolean = true;
statusSignal: Signal | undefined;
statusLoading: boolean = true;
sensor: Sensor | undefined;
sensorLoading: boolean = true;
displayToolbar: boolean = false;
hideCanvas: boolean = false;
error: HttpErrorResponse;
showToolbar() {
this.displayToolbar = true;
}
ngOnInit() {
this.device_id = this.route.snapshot.params['device_id'] || this.deviceId;
this.deviceSubscription = this.twinpadApiService.devicesBehaviorSubject$.subscribe({
next: devices => {
// If device subscription is not undefined and pid is not undefined, no need to refresh device again, so unsub
if (this.deviceSubscription !== undefined && this.pid !== undefined) {
this.deviceSubscription.unsubscribe();
return;
}
const device = devices.find(device => device.device_id === this.device_id);
if (device !== undefined) {
this.setupPid(device);
}
else {
this.twinpadApiService.getDevice(this.device_id).subscribe({
next: device => {
this.setupPid(device);
},
error: error => {
this.error = error;
this.pidCanvas.nativeElement.hidden = true;
this.hideCanvas = true;
}
});
}
},
error: _ => {
this.pidCanvas.nativeElement.hidden = true;
this.hideCanvas = true;
}
});
}
setupPid(device: Device) {
Iif (device.pid === undefined || device.pid === null || this.isPidEmpty(device.pid)) {
this.hideCanvas = true;
return;
}
this.context = this.pidCanvas.nativeElement.getContext('2d')!;
this.pid = PID.deserialize(device['pid']);
this.canvas = new Canvas(this.context, this.pid);
this.handlePidClick();
this.drawPid();
}
handlePidClick() {
this.pid.selectedItem.subscribe({
next: (item) => {
Iif (item === null) {
return;
}
if ((item as PIDComponent).commandSignalId !== undefined) {
// hide sensor signal
this.sensor = undefined;
this.sensorLoading = false;
item = item as PIDComponent;
Eif (item.commandSignalId !== undefined && item.commandSignalId !== null) {
this.twinpadApiService.getSignal(item.commandSignalId).subscribe({
next: (value) => {
this.commandSignal = value;
this.commandLoading = false;
}
});
this.showToolbar();
}
else {
this.commandSignal = undefined;
this.commandLoading = false;
}
Eif (item.statusSignalId !== undefined && item.statusSignalId !== null) {
this.twinpadApiService.getSignal(item.statusSignalId).subscribe({
next: (value) => {
this.statusSignal = value;
this.statusLoading = false;
}
});
}
else {
this.statusSignal = undefined;
this.statusLoading = false;
}
this.showToolbar();
}
else Eif ((item as Sensor).signal_id !== undefined) {
// hide command and status signals
this.commandSignal = undefined;
this.commandLoading = false;
this.statusSignal = undefined;
this.statusLoading = false;
item = item as Sensor;
Eif (item.signal_id !== undefined && item.signal_id !== null) {
this.sensor = item;
this.sensorLoading = false;
this.showToolbar();
}
else {
this.sensor = undefined;
this.sensorLoading = false;
}
}
}
});
}
drawPid() {
const signalIds: string[] = [];
const indexToSensor: { [id: number]: Sensor } = {};
let isensor = 0;
for (const sensor of this.pid.sensors) {
signalIds.push(sensor.signal_id);
indexToSensor[isensor] = sensor;
isensor += 1;
}
for (const sensor of this.pid.tapSensors) {
signalIds.push(sensor.signal_id);
indexToSensor[isensor] = sensor;
isensor += 1;
}
let icomponent = isensor;
const indexToComponent: { [id: number]: PIDComponent } = {};
for (const component of this.pid.components) {
if (component.statusSignalId !== undefined) {
signalIds.push(component.statusSignalId);
indexToComponent[icomponent] = component;
icomponent += 1;
}
}
// Get signals units
for (let i = 0; i < this.pid.sensors.length + this.pid.tapSensors.length; i++) {
this.twinpadApiService.getSignal(signalIds[i]).subscribe(
signal => { indexToSensor[i].unit = signal.unit; }
);
}
this.signalsSubscription = this.twinpadApiService.callPeriodically(() => this.twinpadApiService.getSignalValues(signalIds), 2000).subscribe(value => {
this.signalValues = value;
for (let i = 0; i < signalIds.length; i++) {
Eif (this.signalValues[i] !== null) {
if (i in indexToSensor) {
indexToSensor[i].sample = this.signalValues[i];
}
if (i in indexToComponent) {
indexToComponent[i].statusSample = this.signalValues[i];
}
}
}
this.canvas.draw();
});
this.canvas.draw();
}
hideSignal() {
this.commandSignal = undefined;
this.statusSignal = undefined;
this.sensor = undefined;
}
isPidEmpty(pid: PIDInterface): boolean {
return (pid.components?.length ?? 0) === 0 &&
(pid.pipes?.length ?? 0) === 0 &&
(pid.sensors?.length ?? 0) === 0 &&
(pid.tap_sensors?.length ?? 0) === 0;
}
preventScroll(event: WheelEvent) {
event.preventDefault();
}
ngOnDestroy() {
this.signalsSubscription?.unsubscribe();
}
}
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