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 DEVICES: any = [
          { name: 'Desktop', center: 1.4, spread: 0.3, slowTail: 1.4 },
          { name: 'Laptop', center: 1.9, spread: 0.38, slowTail: 1.8 },
          { name: 'Tablet', center: 2.8, spread: 0.55, slowTail: 2.4 },
          { name: 'Phone (5G)', center: 3.2, spread: 0.62, slowTail: 3.0 },
          { name: 'Phone (3G)', center: 6.1, spread: 1.3, slowTail: 4.5 },
        ];

  private makeSample = (cfg: any, index: any): any => {
          var seed = 8191 * (index + 3)
          function rand() {
            seed = (seed * 16807) % 2147483647
            return (seed - 1) / 2147483646
          }
          var out = []
          for (var i = 0; i < 140; i++) {
            // Box-Muller, then a few genuinely slow loads: the tail is the point of
            // the chart, and it is what the two whisker rules disagree about.
            var u1 = Math.max(rand(), 1e-9)
            var z = Math.sqrt(-2 * Math.log(u1)) * Math.cos(2 * Math.PI * rand())
            var v = cfg.center + z * cfg.spread
            if (i % 34 === 0) v = cfg.center + cfg.slowTail * (0.6 + rand())
            out.push(Math.round(Math.max(0.2, v) * 100) / 100)
          }
          return out
        };

  private RAW: any = this.DEVICES.map(function (cfg, i) {
          return { x: cfg.name, points: this.makeSample(cfg, i) }
        });

  private wireWhiskerControls = (chart: any): any => {
          var buttons = [].slice.call(document.querySelectorAll('[data-whiskers]'))
          var note = document.querySelector('#note')
  
          function apply(mode) {
            buttons.forEach(function (b) {
              b.className = b.getAttribute('data-whiskers') === mode ? 'on' : ''
            })
            chart.updateOptions({
              plotOptions: { boxPlot: { whiskers: mode } },
            })
            if (note) {
              note.textContent =
                mode === 'tukey'
                  ? 'Whiskers stop at 1.5 x IQR. The dots past the whisker are the outliers.'
                  : 'Whiskers reach the slowest and fastest load. Nothing is hidden.'
            }
          }
  
          buttons.forEach(function (b) {
            b.addEventListener('click', function () {
              apply(b.getAttribute('data-whiskers'))
            })
          })
          apply('minmax')
        };

  public chartOptions: Partial<ChartOptions> = {
          series: [
            {
              name: 'Load time',
              type: 'boxPlot',
              data: this.RAW,
            },
          ],
          chart: {
            id: 'loadTimes',
            type: 'boxPlot',
            // Fixed width so the layout cannot shift with the page.
            width: 700,
            height: 440,
            toolbar: {
              show: false,
            },
          },
          plotOptions: {
            boxPlot: {
              colors: {
                upper: '#5A87FF',
                lower: '#B7BEFF',
              },
              // Every observation, drawn over its own box. With the 1.5 x IQR rule the
              // dots beyond the whisker are exactly the outliers that rule excludes.
              points: {
                show: true,
                size: 2.5,
                jitter: 0.45,
                opacity: 0.55,
              },
            },
          },
          legend: {
            show: false,
          },
          yaxis: {
            title: {
              text: 'Page load (seconds)',
            },
            min: 0,
          },
          xaxis: {
            title: {
              text: 'Device',
            },
          },
          tooltip: {
            shared: false,
            intersect: true,
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');
    this.wireWhiskerControls(this.chart)

    function wireWhiskerControls(chart) {
            var buttons = [].slice.call(document.querySelectorAll('[data-whiskers]'))
            var note = document.querySelector('#note')?

            function apply(mode) {
              buttons.forEach(function (b) {
                b.className = b.getAttribute('data-whiskers') === mode ? 'on' : ''
              })
              this.chart.updateOptions({
                plotOptions: { boxPlot: { whiskers: mode } },
              })
              if (note) {
                note.textContent =
                  mode === 'tukey'
                    ? 'Whiskers stop at 1.5 x IQR. The dots past the whisker are the outliers.'
                    : 'Whiskers reach the slowest and fastest load. Nothing is hidden.'
              }
            }

            buttons.forEach(function (b) {
              b.addEventListener('click', () => {
                apply(b.getAttribute('data-whiskers'))
              })
            })
            apply('minmax')
          }
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}