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 randomSeries = (): any => {
          var d = []
          var v = 45 + Math.random() * 25
          for (var i = 0; i < 45; i++) {
            v += (Math.random() - 0.5) * 22
            if (v < 8) v = 8
            if (v > 100) v = 100
            d.push([i + 1, Math.round(v)])
          }
          return d
        };

  private undoBtn: any = document.getElementById('undo');

  private redoBtn: any = document.getElementById('redo');

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

  private syncButtons = (state: any): any => {
          if (!state) state = this.chart.history.state()
          this.undoBtn.disabled = !state.canUndo
          this.redoBtn.disabled = !state.canRedo
          this.readout.innerHTML =
            'history: <b>' +
            (state.index + 1) +
            ' / ' +
            state.length +
            '</b> checkpoints'
        };

  public chartOptions: Partial<ChartOptions> = {
          series: [{ name: 'Value', data: this.randomSeries() }],
          chart: {
            height: 400,
            type: 'line',
            id: 'rewind-demo',
            fontFamily: 'Helvetica, Arial, sans-serif',
            animations: { enabled: true },
            // Toolbar on so zoom / pan / reset (and the measure tool) are one click away.
            toolbar: { show: true, autoSelected: 'zoom' },
            zoom: { enabled: true, type: 'x' },
            history: { enabled: true, maxDepth: 50, coalesceMs: 250, keyboard: true },
            // Right-click actions: drop a note, a dashed marker line, or seed the ruler.
            contextMenu: {
              enabled: true,
              line: { text: 'Marker', strokeDashArray: 5, color: '#0EA5E9' },
              items: ['annotate', 'xline', 'yline', 'measure'],
            },
            // Measure ruler + editable / draggable annotations. Both commit checkpoints,
            // so Undo / Redo steps through them alongside data and zoom changes.
            measure: { enabled: true },
            ink: { enabled: true, snap: true },
          },
          colors: ['#0EA5E9'],
          stroke: { width: 2.5, curve: 'smooth' },
          markers: { size: 0, hover: { size: 5 } },
          dataLabels: { enabled: false },
          title: {
            text: 'Undo / redo over data, zoom, annotations, and measurements',
            align: 'left',
          },
          xaxis: { type: 'numeric', title: { text: 'Session' }, tickAmount: 10 },
          yaxis: { decimalsInFloat: 0 },
          grid: { borderColor: '#eceff5' },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');

    this.chart.addEventListener('historyChange', (c, state) => {
            this.syncButtons(state && state.length != null ? state : undefined)
          })
    this.undoBtn.addEventListener('click', () => {
            this.chart.history.undo()
          })
    this.redoBtn.addEventListener('click', () => {
            this.chart.history.redo()
          })
    document.getElementById('randomize').addEventListener('click', () => {
            this.chart.updateSeries([{ name: 'Value', data: this.randomSeries() }])
          })
    document.getElementById('reset').addEventListener('click', () => {
            this.chart.history.clear()
          })
    setTimeout(this.syncButtons, 300)
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}