import { Component, AfterViewInit, OnDestroy, ViewChild } from '@angular/core';
import {
  ChartComponent,
  ApexAxisChartSeries,
  ApexNonAxisChartSeries,
  ApexChart,
  ApexXAxis,
  ApexYAxis,
  ApexTitleSubtitle,
  ApexDataLabels,
  ApexStroke,
  ApexFill,
  ApexLegend,
  ApexTooltip,
  ApexMarkers,
  ApexPlotOptions,
  ApexResponsive,
  ApexGrid,
  ApexAnnotations,
  ApexStates,
  ApexTheme,
  NgApexchartsModule,
} from 'ng-apexcharts';

export type ChartOptions = {
  series?: ApexAxisChartSeries | ApexNonAxisChartSeries;
  chart?: ApexChart;
  xaxis?: ApexXAxis;
  yaxis?: ApexYAxis | ApexYAxis[];
  title?: ApexTitleSubtitle;
  subtitle?: ApexTitleSubtitle;
  dataLabels?: ApexDataLabels;
  stroke?: ApexStroke;
  fill?: ApexFill;
  legend?: ApexLegend;
  tooltip?: ApexTooltip;
  markers?: ApexMarkers;
  plotOptions?: ApexPlotOptions;
  responsive?: ApexResponsive[];
  grid?: ApexGrid;
  annotations?: ApexAnnotations;
  states?: ApexStates;
  theme?: ApexTheme;
  colors?: string[];
  labels?: any;
};

@Component({
  selector: 'app-chart',
  standalone: true,
  imports: [NgApexchartsModule],
  templateUrl: './chart.component.html',
})
export class AppChart implements AfterViewInit, OnDestroy {
  @ViewChild('chart') chart!: ChartComponent;
  private mulberry32 = (a: any): any => {
          return function () {
            a |= 0
            a = (a + 0x6d2b79f5) | 0
            var t = Math.imul(a ^ (a >>> 15), 1 | a)
            t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t
            return ((t ^ (t >>> 14)) >>> 0) / 4294967296
          }
        };

  private rng: any = this.mulberry32(20240607);

  private gauss = (mean: any, sd: any): any => {
          var u = 0,
            v = 0
          while (u === 0) u = this.rng()
          while (v === 0) v = this.rng()
          return mean + sd * Math.sqrt(-2 * Math.log(u)) * Math.cos(2 * Math.PI * v)
        };

  private REGIONS: any = [
          { name: 'Frankfurt', mean: 120, sd: 22 },
          { name: 'Mumbai', mean: 182, sd: 30 },
          { name: 'Oregon', mean: 96, sd: 18 },
          { name: 'Singapore', mean: 158, sd: 26 },
          { name: 'Virginia', mean: 82, sd: 16 },
        ];

  private readings = (region: any): any => {
          var out = []
          for (var i = 0; i < 150; i++) {
            out.push(Math.max(20, Math.round(this.gauss(region.mean, region.sd))))
          }
          return out
        };

  public chartOptions: Partial<ChartOptions> = {
          series: [
            {
              name: 'Frankfurt',
              data: [{ x: 'Frankfurt', y: this.readings(this.REGIONS[0]) }],
            },
            {
              name: 'Mumbai',
              data: [{ x: 'Mumbai', y: this.readings(this.REGIONS[1]) }],
            },
            {
              name: 'Oregon',
              data: [{ x: 'Oregon', y: this.readings(this.REGIONS[2]) }],
            },
            {
              name: 'Singapore',
              data: [{ x: 'Singapore', y: this.readings(this.REGIONS[3]) }],
            },
            {
              name: 'Virginia',
              data: [{ x: 'Virginia', y: this.readings(this.REGIONS[4]) }],
            },
          ],
          chart: {
            type: 'scatter',
            height: 460,
          },
          title: {
            text: 'API response time by region',
            align: 'center',
          },
          plotOptions: {
            scatter: {
              // Spread the readings in each band horizontally (axis units; 1 = one
              // band step). Set `distributed: true` to colour each band differently.
              jitter: {
                enabled: true,
                x: 0.35,
              },
            },
          },
          markers: {
            size: 3,
            strokeWidth: 0,
          },
          fill: {
            opacity: 0.6,
          },
          legend: { show: false },
          xaxis: {
            // strip plots read better without the vertical crosshair line
            crosshairs: { show: false },
          },
          yaxis: {
            title: { text: 'Response time (ms)' },
            labels: {
              formatter: (v) => {
                return Math.round(v)
              },
            },
          },
          tooltip: {
            // anchor the tooltip to the hovered band so it stays put instead of
            // chasing each individual marker
            shared: true,
            intersect: false,
            y: {
              formatter: (v) => {
                return Math.round(v) + ' ms'
              },
            },
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJpc3N1ZURhdGUiOiIyMDI2LTA0LTE2IiwiZXhwaXJ5RGF0ZSI6IjIwNTItMDQtMTciLCJwbGFuIjoiZW50ZXJwcmlzZSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiXX0=');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}