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 SOURCES: any = ['Coal', 'Gas', 'Hydro', 'Nuclear', 'Wind', 'Solar', 'Other'];

  private SOURCE_COLORS: any = [
          '#374151', // Coal
          '#94A3B8', // Gas
          '#2563EB', // Hydro
          '#E11D48', // Nuclear
          '#0D9488', // Wind
          '#F59E0B', // Solar
          '#CBD5E1', // Other
        ];

  private SCENARIOS: any = {
          today: {
            label: 'Today',
            caption:
              'A rough picture of the mix today: fossil fuels (coal + gas) still fill well over half the grid.',
            values: [35, 23, 15, 9, 8, 6, 4],
          },
          future: {
            label: '2035 (projected)',
            caption:
              'A cleaner projected mix: coal squares recolour to wind and solar as the renewables band grows.',
            values: [18, 20, 16, 10, 18, 14, 4],
          },
        };

  private buttons: any = document.querySelectorAll('#scenario-nav button');

  private caption: any = document.getElementById('caption');

  private showScenario = (key: any): any => {
          this.buttons.forEach(function (b) {
            b.classList.toggle('active', b.getAttribute('data-scenario') === key)
          })
          this.caption.textContent = this.SCENARIOS[key].caption
          this.chart.updateSeries(this.SCENARIOS[key].values)
        };

  public chartOptions: Partial<ChartOptions> = {
          series: this.SCENARIOS.today.values,
          chart: {
            id: 'energyWaffle',
            type: 'waffle',
            height: 420,
            animations: {
              enabled: true,
              speed: 700,
            },
          },
          labels: this.SOURCES,
          colors: this.SOURCE_COLORS,
          legend: {
            position: 'bottom',
          },
          plotOptions: {
            unit: {
              grid: {
                columns: 10,
                total: 100,
              },
              spacing: 1.25,
            },
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJpc3N1ZURhdGUiOiIyMDI2LTA0LTE2IiwiZXhwaXJ5RGF0ZSI6IjIwNTItMDQtMTciLCJwbGFuIjoiZW50ZXJwcmlzZSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiXX0=');

    function showScenario(key) {
            this.buttons.forEach(function (b) {
              b.classList.toggle('active', b.getAttribute('data-scenario') === key)
            })
            this.caption.textContent = this.SCENARIOS[key].caption
            this.chart.updateSeries(this.SCENARIOS[key].values)
          }
    this.buttons.forEach(function (btn) {
            btn.addEventListener('click', () => {
              this.showScenario(btn.getAttribute('data-scenario'))
            })
          })
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}