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 ohlcWalk = (seed: any, start: any, vol: any): any => {
        var rand = this.mulberry32(seed)
        var r2 = function (v) {
          return Math.round(v * 100) / 100
        }
        var out = []
        var ts = new Date('01 Jan 2025').getTime()
        var close = start
        for (var i = 0; i < 40; i++) {
          var open = close
          close = Math.max(vol, open + (rand() - 0.48) * vol * 2)
          var high = Math.max(open, close) + rand() * vol
          var low = Math.max(vol * 0.2, Math.min(open, close) - rand() * vol)
          out.push({ x: ts, y: [r2(open), r2(high), r2(low), r2(close)] })
          ts += 86400000
        }
        return out
      };

  private TICKERS: any = [
        { ticker: 'ANVL', seed: 3, start: 24, vol: 0.9 },
        { ticker: 'BRCK', seed: 17, start: 61, vol: 2.1 },
        { ticker: 'CDER', seed: 29, start: 142, vol: 4.5 },
        { ticker: 'DELM', seed: 41, start: 310, vol: 9 },
        { ticker: 'ELMS', seed: 53, start: 78, vol: 2.6 },
        { ticker: 'FRST', seed: 67, start: 927, vol: 24 },
      ];

  private stockSeries: any = this.TICKERS.map(function (t) {
        return {
          name: 'OHLC',
          ticker: t.ticker,
          data: this.ohlcWalk(t.seed, t.start, t.vol),
        }
      });

  public chartOptions: Partial<ChartOptions> = {
          series: this.stockSeries,
          chart: {
            id: 'stockTrellis',
            type: 'candlestick',
            height: 620,
            animations: {
              enabled: false,
            },
          },
          trellis: {
            by: 'ticker',
            columns: 3,
            gap: 14,
            scales: {
              y: 'independent',
            },
          },
          xaxis: {
            type: 'datetime',
          },
          yaxis: {
            labels: {
              formatter: (val) => {
                return '$' + Math.round(val)
              },
            },
          },
          dataLabels: {
            enabled: false,
          },
          tooltip: {
            x: {
              format: 'dd MMM',
            },
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}