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

@Component({
  selector: 'app-pages',
  templateUrl: './pages.component.html',
  styleUrls: ['./pages.component.scss']
})
export class PagesComponent implements OnInit {
  disbursements: number = 0;
  users: any;
  locations: any;
  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'}
  ];

  public transferUsagesChartLabels: Label[] = ['Food/Water', 'Fuel/Energy', 'Education', 'Health', 'Shop', 'Environment', 'Transport',
    'Farming/Labour', 'Savings Group', 'Savings Group'];
  public transferUsagesChartData: number[] = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
  public transferUsagesChartType: ChartType = 'pie';
  public transferUsagesChartOptions: ChartOptions = {
    responsive: true,
    legend: {
      position: 'top',
    },
    plugins: {
      datalabels: {
        formatter: (value, ctx) => {
          const label = ctx.chart.data.labels[ctx.dataIndex];
          return label;
        },
      },
    }
  };
  public transferUsagesChartLegend = true;
  public transferUsagesChartColors = [
    {
      backgroundColor: [
        'rgba(0,0,255,0.3)',
        'rgba(255,0,0,0.3)',
        'rgba(0,255,0,0.3)',
        'rgba(255,0,255,0.3)',
        'rgba(255,255,0,0.3)',
        'rgba(0,255,255,0.3)',
        'rgba(255,255,255,0.3)',
        'rgba(255,100,0,0.3)',
        'rgba(0,255,100,0.3)',
        'rgba(100,0,255,0.3)'],
    },
  ];

  constructor(
    private userService: UserService,
    private locationService: LocationService
  ) {
    this.locationService.getLocations();
    this.locationService.locationsSubject.subscribe(locations => {
      this.locations = locations;
    });
  }

  ngOnInit(): void {
    this.newDataPoint([50, 80], 'August');
    this.transferUsagesChartData = [18, 12, 10, 8, 6, 5, 5, 3, 2, 1];
    this.disbursements = ArraySum.arraySum(this.lineChartData.find(data => data.label === 'Token Disbursements').data);
    this.users = ArraySum.arraySum(this.barChartData.find(data => data.label === 'New Users').data);
    this.transactions = ArraySum.arraySum(this.lineChartData.find(data => data.label === 'Transaction Volumes').data);
  }

  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);
  }
}