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import { Router } from '@angular/router';
import { getWeekNumber } from '../../utils/utils';
import { TwinpadApiService } from '../../services/twinpad-api.service';
import { HttpErrorResponse } from '@angular/common/http';
import { EChartsOption, VisualMapComponentOption } from 'echarts';
import * as echarts from 'echarts/core';
import { HeatmapChart } from 'echarts/charts';
import { GridComponent } from 'echarts/components';
import { CanvasRenderer } from 'echarts/renderers';
import { TooltipComponent } from 'echarts/components';
import { VisualMapComponent } from 'echarts/components';
import { ErrorComponent } from '../error/error.component';
import { NgxEchartsDirective, provideEchartsCore } from 'ngx-echarts';
import { Observable } from 'rxjs';
import { TwinPadActivity } from '../../models/events';
import { NumberSuffixPipe } from '../../pipes/number-suffix.pipe';
echarts.use([HeatmapChart, GridComponent, CanvasRenderer, TooltipComponent, VisualMapComponent]);
@Component({
selector: 'app-calendar-heatmap',
imports: [NgxEchartsDirective, ErrorComponent],
providers: [provideEchartsCore({ echarts })],
templateUrl: './calendar-heatmap.component.html',
styleUrl: './calendar-heatmap.component.scss'
})
export class CalendarHeatmapComponent implements OnInit {
private twinpadApiService = inject(TwinpadApiService);
private router = inject(Router);
@Input() heatMapType: "events" | "samples" | "commands";
isLoading: boolean;
options: EChartsOption;
dayToGrid: Map<string, [number, number]> = new Map();
gridToDay: Map<string, string> = new Map();
gridToTimestampBounds: Map<string, [number, number]> = new Map();
weeksDisplayed: number = 20;
firstDayTs: number;
lastDayTs: number;
updateOptions: EChartsOption;
error: HttpErrorResponse;
ngOnInit(): void {
this.isLoading = true;
this.setOptions();
this.getData();
}
getData() {
let apiRequest: Observable<TwinPadActivity[]>;
switch (this.heatMapType) {
case "events": {
apiRequest = this.twinpadApiService.getNumberEvents(this.firstDayTs, this.lastDayTs);
break;
}
case "samples": {
apiRequest = this.twinpadApiService.getNumberSamples(this.firstDayTs, this.lastDayTs);
break;
}
case "commands": {
apiRequest = this.twinpadApiService.getNumberCommands(this.firstDayTs, this.lastDayTs);
break;
}
default: {
this.error = new HttpErrorResponse({ status: 404, statusText: "Unknown heatmap type" });
return;
}
}
apiRequest.subscribe({
next: response => {
const data = [];
for (const day_data of response) {
const day = new Date(day_data.timestamp * 1000).toDateString();
const grid = this.dayToGrid.get(day);
Eif (grid !== undefined) {
data.push([grid[0], grid[1], day_data.amount]);
}
}
this.updateOptions = { series: [{ data: data }] };
this.isLoading = false;
},
error: error => { this.error = error; }
});
}
onChartClick(event: any): void { // eslint-disable-line
if (event.seriesType === 'heatmap') {
const timestamps = this.gridToTimestampBounds.get([event.data[0], event.data[1]].join(','));
if (timestamps !== undefined) {
switch (this.heatMapType) {
case "events": {
this.router.navigate(['/events'], { queryParams: { min_timestamp: timestamps[0], max_timestamp: timestamps[1] } });
break;
}
case "commands": {
this.router.navigate(['/commands'], { queryParams: { min_timestamp: timestamps[0], max_timestamp: timestamps[1] } });
break;
}
default: {
return;
}
}
}
}
}
setOptions() {
const weeks = [];
const day = new Date();
const daysUntilSunday = (7 - day.getDay()) % 7;
day.setDate(day.getDate() + daysUntilSunday);
day.setHours(0, 0, 0, 0);
this.lastDayTs = day.getTime() / 1000;
for (let iweek = this.weeksDisplayed; iweek >= 0; iweek--) {
const weekNumber: number = getWeekNumber(day);
weeks.push('W' + weekNumber.toString());
for (let iday = 0; iday < 7; iday++) {
this.dayToGrid.set(day.toDateString(), [iweek, iday]);
this.gridToDay.set([iweek, iday].join(','), day.toDateString());
const tsMin = day.getTime() / 1000;
this.gridToTimestampBounds.set([iweek, iday].join(','), [tsMin, tsMin + 24 * 3600]);
day.setDate(day.getDate() - 1);
}
}
this.firstDayTs = day.getTime() / 1000;
weeks.reverse();
const days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'].reverse();
const data: number[][] = [];
const gridToDay = this.gridToDay;
const heatMapType = this.heatMapType;
const visualMap: VisualMapComponentOption = {
min: 0,
calculable: true,
orient: 'horizontal',
left: 'center',
bottom: '15%'
};
switch (this.heatMapType) {
case 'events':
visualMap.max = 250;
break;
case 'samples':
visualMap.max = 100_000_000;
break;
case 'commands':
visualMap.max = 250;
break;
}
this.options = {
title: {
left: 'center',
text: 'Pad activity'
},
tooltip: {
position: 'top',
formatter: function (params: any) { // eslint-disable-line
const dataItem = params.data as [number, number, number];
const x = dataItem[0];
const y = dataItem[1];
const value = dataItem[2];
const day = gridToDay.get([x, y].join(','));
return day + `<br>Number ${heatMapType}: ` + value;
}
},
grid: {
height: '50%',
top: '10%'
},
xAxis: {
type: 'category',
data: weeks,
splitArea: {
show: true
}
},
yAxis: {
type: 'category',
data: days,
splitArea: {
show: true
}
},
visualMap: visualMap,
series: [
{
name: 'Activity',
type: 'heatmap',
data: data,
label: {
show: true,
formatter: function (params: any) { // eslint-disable-line
const numberPipe = new NumberSuffixPipe();
const dataItem = params.data as [number, number, number];
const value = dataItem[2];
return numberPipe.transform(value);
}
},
emphasis: {
itemStyle: {
shadowBlur: 10,
shadowColor: 'rgba(0, 0, 0, 0.5)'
}
}
}
]
};
}
}
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