cic-staff-client/src/app/pages/pages.component.ts

import { Component, OnInit } from '@angular/core';
import {Color, Label} from 'ng2-charts';
import {ChartDataSets, ChartOptions, ChartType} from 'chart.js';

@Component({
  selector: 'app-pages',
  templateUrl: './pages.component.html',
  styleUrls: ['./pages.component.scss']
})
export class PagesComponent implements OnInit {
  disbursements: number = 0;
  users: number = 0;
  transactions: number = 0;
  public lineChartData: ChartDataSets[] = [
    { data: [65, 59, 80, 81, 56, 55, 40], label: 'User Registration'},
    { data: [28, 48, 40, 19, 86, 27, 90], label: 'Transaction Volumes'},
    { data: [180, 480, 770, 90, 1000, 270, 400], label: 'Token Disbursements', yAxisID: 'y-axis-1'}
  ];

  public lineChartLabels: Label[] = ['January', 'February', 'March', 'April', 'May', 'June', 'July'];

  public lineChartOptions: (ChartOptions & { annotation: any }) = {
    responsive: true,
    scales: {
      // We use this empty structure as a placeholder for dynamic theming.
      xAxes: [{}],
      yAxes: [
        {
          id: 'y-axis-0',
          position: 'left',
        },
        {
          id: 'y-axis-1',
          position: 'right',
          gridLines: {
            color: 'rgba(255,0,0,0.3)',
          },
          ticks: {
            fontColor: 'red',
          }
        }
      ]
    },
    annotation: {
      annotations: [
        {
          type: 'line',
          mode: 'vertical',
          scaleID: 'x-axis-0',
          value: 'March',
          borderColor: 'orange',
          borderWidth: 2,
          label: {
            enabled: true,
            fontColor: 'orange',
            content: 'LineAnno'
          }
        },
      ],
    },
  };

  public lineChartColors: Color[] = [
    { // grey
      backgroundColor: 'rgba(148,159,177,0.2)',
      borderColor: 'rgba(148,159,177,1)',
      pointBackgroundColor: 'rgba(148,159,177,1)',
      pointBorderColor: '#fff',
      pointHoverBackgroundColor: '#fff',
      pointHoverBorderColor: 'rgba(148,159,177,0.8)'
    },
    { // dark grey
      backgroundColor: 'rgba(77,83,96,0.2)',
      borderColor: 'rgba(77,83,96,1)',
      pointBackgroundColor: 'rgba(77,83,96,1)',
      pointBorderColor: '#fff',
      pointHoverBackgroundColor: '#fff',
      pointHoverBorderColor: 'rgba(77,83,96,1)'
    },
    { // red
      backgroundColor: 'rgba(255,0,0,0.3)',
      borderColor: 'red',
      pointBackgroundColor: 'rgba(148,159,177,1)',
      pointBorderColor: '#fff',
      pointHoverBackgroundColor: '#fff',
      pointHoverBorderColor: 'rgba(148,159,177,0.8)'
    }
  ];

  public lineChartLegend = true;
  public lineChartType = 'line';

  public barChartOptions: ChartOptions = {
    responsive: true,
    // We use these empty structures as placeholders for dynamic theming.
    scales: { xAxes: [{}], yAxes: [{}] },
    plugins: {
      datalabels: {
        anchor: 'end',
        align: 'end',
      }
    }
  };
  public barChartLabels: Label[] = ['January', 'February', 'March', 'April', 'May', 'June', 'July'];
  public barChartType: ChartType = 'horizontalBar';
  public barChartLegend = true;
  public barChartData: ChartDataSets[] = [
    { data: [65, 59, 80, 81, 56, 55, 40], label: 'New Users'},
    { data: [28, 48, 40, 19, 86, 27, 90], label: 'Recurrent Users'}
  ];

  constructor() { }

  ngOnInit(): void {
    this.newDataPoint([50, 80], 'August');
    // this.disbursements = this.lineChartData.find(data => data.label === 'Token Disbursements')
    //   .data.reduce((accumulator, current) => accumulator + current, 0);
    // this.users = this.barChartData.find(data => data.label === 'New Users')
    //   .data.reduce((accumulator, current) => accumulator + current, 0);
    // this.transactions = this.lineChartData.find(data => data.label === 'Transaction Volumes')
    //   .data.reduce((accumulator, current) => accumulator + current, 0);
  }

  newDataPoint(dataArr: any[], label: string): void {
    this.barChartData.forEach((dataset, index) => {
      this.barChartData[index] = Object.assign({}, this.barChartData[index], {
        data: [...this.barChartData[index].data, dataArr[index]]
      });
    });

    this.barChartLabels = [...this.barChartLabels, label];
  }

  public chartClicked({ event, active}: { event: MouseEvent, active: {}[] }): void {
    console.log(event, active);
  }

  public chartHovered({ event, active }: { event: MouseEvent, active: {}[] }): void {
    console.log(event, active);
  }
}