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(98761234);

  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 quantile = (sorted: any, q: any): any => {
          var pos = (sorted.length - 1) * q
          var b = Math.floor(pos)
          var r = pos - b
          return sorted[b + 1] !== undefined
            ? sorted[b] + r * (sorted[b + 1] - sorted[b])
            : sorted[b]
        };

  private buildBox = (name: any, n: any, mean: any, sd: any): any => {
          var data = []
          for (var i = 0; i < n; i++) data.push(Math.round(this.gauss(mean, sd) * 10) / 10)
          var s = data.slice().sort(function (a, b) {
            return a - b
          })
          return {
            x: name,
            y: [
              s[0],
              this.quantile(s, 0.25),
              this.quantile(s, 0.5),
              this.quantile(s, 0.75),
              s[s.length - 1],
            ],
            points: data,
          }
        };

  private REGIONS: any = [
          this.buildBox('North', 45, 68, 8),
          this.buildBox('South', 45, 74, 6),
          this.buildBox('East', 45, 61, 11),
          this.buildBox('West', 45, 70, 7),
        ];

  public chartOptions: Partial<ChartOptions> = {
          series: [
            {
              name: 'Response time',
              type: 'boxPlot',
              data: this.REGIONS,
            },
          ],
          chart: {
            type: 'boxPlot',
            height: 460,
          },
          title: {
            text: 'Response time distribution by region',
          },
          plotOptions: {
            bar: {
              horizontal: true,
              barHeight: '50%',
            },
            boxPlot: {
              colors: { upper: '#5b8def', lower: '#a3c0f9' },
              // overlay each raw observation as a jittered dot
              points: { show: true, size: 3, jitter: 0.6 },
            },
          },
          stroke: { colors: ['#37474f'] },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJpc3N1ZURhdGUiOiIyMDI2LTA0LTE2IiwiZXhwaXJ5RGF0ZSI6IjIwNTItMDQtMTciLCJwbGFuIjoiZW50ZXJwcmlzZSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiXX0=');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}