import { Component, OnInit } from '@angular/core';
import {CacheService} from '../cache.service';

@Component({
  selector: 'app-progress-view',
  templateUrl: './progress-view.component.html',
  styleUrls: ['./progress-view.component.css']
})
export class ProgressViewComponent implements OnInit {
  public plot;

  constructor(private cache: CacheService) { }

  ngOnInit(): void {
    this.cache.onNewSimilarity.subscribe(() => { this.initializeInfo(); });
  }

  averagePlot(averages) {
    const data = averages.map((average, i) => {
      return {
        x: [...Array(average.length).keys()],
        y: average,
        type: 'line',
        visible: i === 0
      };
    });
    const visibility = Array(averages.length).fill(false);
    const steps = [];
    for (let i = averages.length - 1; i >= 0; i--) {
      const v = visibility.slice();
      v[i] = true;
      steps.push({
        label: (100 * (averages.length - i) / averages.length).toString() + '%',
        method: 'restyle',
        args: ['visible', v]
      });
    }
    visibility[averages.length - 1] = true;
    return {
      data,
      layout: {
        showlegend: false,
        hovermode: 'closest',
        autosize: true,
        margin: {
          l: 50,
          r: 30,
          t: 30,
          pad: 4
        },
        xaxis: {
          showticklabels: false
        },
        yaxis: {
          showticklabels: false
        },
        height: 300,
        width: 200,
        sliders: [{
          active: averages.length - 1,
          pad: {t: 30},
          currentvalue: {
            xanchor: 'right',
            prefix: 'Similarity: ',
            font: {
              color: '#888',
              size: 10
            }
          },
          steps
        }]
      },
    };
  }

  async initializeInfo(): Promise<void> {
    const keys = Object.keys(this.similarity).map(a => Number(a)).sort((a, b) => b - a);
    const allWindows = [];
    for (const key of keys) {
      allWindows.push(this.similarity[key]);
    }
    const averages = await this.cache.getAverageWindow(allWindows);
    this.plot = this.averagePlot(averages);
  }

  public get similarity() {
    return this.cache.windowSimilarity;
  }

  public setSliderValue(v) {
    this.cache.sliderValue = v.slider.active;
  }
}