All files / src/app/components/calendar-heatmap calendar-heatmap.component.ts

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import { Component, Input, OnInit } from '@angular/core';
import { Router } from '@angular/router';
import { getWeekNumber } from '../../utils/utils';
import { TwinpadApiService } from '../../services/twinpad-api.service';
import { HttpErrorResponse } from '@angular/common/http';
import { NgIf } from '@angular/common';
 
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, NgIf],
  providers: [provideEchartsCore({ echarts })],
  templateUrl: './calendar-heatmap.component.html',
  styleUrl: './calendar-heatmap.component.scss'
})
export class CalendarHeatmapComponent implements OnInit {
  @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;
 
  constructor(private twinpadApiService: TwinpadApiService, private router: Router) { }
 
  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)'
            }
          }
        }
      ]
    };
  }
 
}