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 = (seed: any): any => {
        return function () {
          seed |= 0
          seed = (seed + 0x6d2b79f5) | 0
          var t = Math.imul(seed ^ (seed >>> 15), 1 | seed)
          t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t
          return ((t ^ (t >>> 14)) >>> 0) / 4294967296
        }
      };

  private COUNTRIES: any = [
        { name: 'United States', seed: 5, base: 48000 },
        { name: 'India', seed: 11, base: 30500 },
        { name: 'United Kingdom', seed: 19, base: 22000 },
        { name: 'Germany', seed: 23, base: 18200 },
        { name: 'Brazil', seed: 31, base: 15400 },
        { name: 'France', seed: 37, base: 13100 },
        { name: 'Canada', seed: 43, base: 12000 },
        { name: 'Australia', seed: 47, base: 9600 },
        { name: 'Japan', seed: 59, base: 8100 },
        { name: 'Netherlands', seed: 61, base: 6200 },
        { name: 'Spain', seed: 71, base: 5100 },
        { name: 'Mexico', seed: 79, base: 4300 },
        { name: 'Sweden', seed: 83, base: 3600 },
        { name: 'Poland', seed: 89, base: 3000 },
        { name: 'Singapore', seed: 97, base: 2600 },
        { name: 'South Africa', seed: 101, base: 2200 },
        { name: 'Argentina', seed: 107, base: 1800 },
        { name: 'Ireland', seed: 113, base: 1500 },
        { name: 'Thailand', seed: 127, base: 1200 },
        { name: 'New Zealand', seed: 131, base: 900 },
      ];

  private dailySessions = (seed: any, base: any, spikeAt: any): any => {
        var rand = this.mulberry32(seed)
        var out = []
        var ts = new Date('01 Jan 2025').getTime()
        var val = base
        for (var i = 0; i < 60; i++) {
          val = Math.max(base * 0.5, val + (rand() - 0.5) * base * 0.12)
          var v = val
          // The anomaly the top-5 chart would never show: a three-day viral spike.
          if (spikeAt && i >= spikeAt && i < spikeAt + 3) {
            v = val + 11000 * (1 - (i - spikeAt) * 0.3)
          }
          out.push([ts, Math.round(v)])
          ts += 86400000
        }
        return out
      };

  private trafficSeries: any = this.COUNTRIES.map(function (c) {
        return {
          name: 'Sessions',
          country: c.name,
          data: this.dailySessions(c.seed, c.base, c.name === 'New Zealand' ? 34 : 0),
        }
      });

  public chartOptions: Partial<ChartOptions> = {
          series: this.trafficSeries,
          chart: {
            id: 'trafficTrellis',
            type: 'area',
            animations: {
              enabled: false,
            },
          },
          trellis: {
            by: 'country',
            minPanelWidth: 240,
            panelHeight: 120,
            gap: 12,
          },
          colors: ['#0369A1'],
          stroke: {
            width: 2,
            curve: 'straight',
          },
          fill: {
            type: 'gradient',
            gradient: {
              opacityFrom: 0.35,
              opacityTo: 0.05,
            },
          },
          xaxis: {
            type: 'datetime',
          },
          yaxis: {
            labels: {
              formatter: (val) => {
                return Math.round(val / 1000) + 'k'
              },
            },
          },
          dataLabels: {
            enabled: false,
          },
          tooltip: {
            x: {
              format: 'dd MMM',
            },
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}