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 DAYS: any = ['Sun', 'Sat', 'Fri', 'Thu', 'Wed', 'Tue', 'Mon'];

  private HOURS: any = ['6a', '8a', '10a', '12p', '2p', '4p', '6p', '8p'];

  private LOCATIONS: any = [
        {
          name: 'Central Station',
          seed: 7,
          volume: 1.0,
          peaks: [1, 6],
          weekend: 0.45,
        },
        { name: 'Harbor Point', seed: 19, volume: 0.82, peaks: [1, 6], weekend: 0.6 },
        {
          name: 'University Campus',
          seed: 31,
          volume: 0.66,
          peaks: [3, 4],
          weekend: 0.3,
        },
        {
          name: 'Riverside Mall',
          seed: 43,
          volume: 0.58,
          peaks: [4, 5],
          weekend: 1.15,
        },
        {
          name: 'Airport North',
          seed: 59,
          volume: 0.74,
          peaks: [0, 7],
          weekend: 0.95,
        },
        {
          name: 'Lakeside Park',
          seed: 71,
          volume: 0.31,
          peaks: [5, 6],
          weekend: 1.4,
        },
      ];

  private hourlyRow = (rand: any, loc: any, dayIndex: any): any => {
        // DAYS runs Sun..Mon top to bottom, so weekend factor keys off the ends.
        var isWeekend = dayIndex === 0 || dayIndex === 1
        var dayFactor = isWeekend ? loc.weekend : 0.85 + rand() * 0.3
        return this.HOURS.map(function (hour, hi) {
          var near = Math.min(
            Math.abs(hi - loc.peaks[0]),
            Math.abs(hi - loc.peaks[1]),
          )
          var shape = Math.max(0.12, 1 - near * 0.28)
          var v = 130 * loc.volume * dayFactor * shape * (0.85 + rand() * 0.3)
          return { x: hour, y: Math.round(v) }
        })
      };

  private activitySeries: any = [];

  public chartOptions: Partial<ChartOptions> = {
          series: this.activitySeries,
          chart: {
            id: 'activityTrellis',
            type: 'heatmap',
            height: 620,
            animations: {
              enabled: false,
            },
          },
          trellis: {
            by: 'location',
            columns: 3,
            minPanelWidth: 300,
            gap: 14,
          },
          colors: ['#0E7490'],
          plotOptions: {
            heatmap: {
              radius: 2,
              enableShades: true,
              shadeIntensity: 0.55,
              colorScale: {
                gradientLegend: {
                  formatter: (val) => {
                    return Math.round(Number(val)) + ' check-ins'
                  },
                },
              },
            },
          },
          dataLabels: {
            enabled: false,
          },
          stroke: {
            width: 1,
            colors: ['#fff'],
          },
          xaxis: {
            type: 'category',
          },
          tooltip: {
            compact: true,
            y: {
              formatter: (val) => {
                return val + ' check-ins'
              },
            },
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');
    this.LOCATIONS.forEach(function (loc) {
          var rand = this.mulberry32(loc.seed)
          this.DAYS.forEach(function (day, di) {
            this.activitySeries.push({
              name: day,
              location: loc.name,
              data: this.hourlyRow(rand, loc, di),
            })
          })
        })
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}