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

@Component({
  selector: 'app-labeling-window',
  templateUrl: './labeling-window.component.html',
  styleUrls: ['./labeling-window.component.css']
})
export class LabelingWindowComponent implements OnInit {
  public topk;
  public subplots = [];
  public labels: boolean[] = [];
  private k = 5;

  constructor(private service: CacheService) { }

  ngOnInit(): void {
    this.service.onNewSimilarity.subscribe(() => { this.getTopKSimilar(); });
  }

  public train() {
    this.service.labels = Object.assign({}, this.service.labels, this.labels);
    this.service.updateTables();
  }

  public labelCorrect(index: number) {
    this.labels[index] = true;
  }

  public labelUndefined(index: number) {
    if (this.labels[index] !== undefined) {
      delete this.labels[index];
    }
  }

  public labelIncorrect(index: number) {
    this.labels[index] = false;
  }

  async getTopKSimilar() {
    this.labels = [];
    let abort = false;
    const topk = [];
    let k = this.k;

    const keys = Object.keys(this.windowSimilarity).map(a => Number(a)).sort((a, b) => b - a);
    for (let i = 0; i < this.k; i++) {
      const windows = this.windowSimilarity[keys[i]];
      this.shuffleArray(windows);
      for (const index of windows) {
        if (this.service.labels[index] !== undefined) {
          continue;
        }
        topk.push({index, frequency: 100 * keys[i] / this.service.nrOfTables});
        k -= 1;
        if (k < 1) {
          abort = true;
          break;
        }
        // break;
      }
      if (abort) {
        break;
      }
    }
    this.topk = topk;
    await this.createPlots();
  }

  async createPlots() {
    this.subplots = [];
    const values = await this.service.getWindow(this.topk.map((window) => window.index));
    this.topk.forEach((window, i) => {
      this.subplots.push(
        {
          index: window.index,
          data: [{
            x: [...Array(values[i].length).keys()],
            y: values[i],
            type: 'line'
          }],
          layout: {
            title: `Index: ${window.index.toString()}      Similarity: ${window.frequency.toString()}%`,
            hovermode: 'closest',
            autosize: true,
            margin: {
              l: 30,
              r: 30,
              t: 30,
              b: 0,
              pad: 4
            },
            height: 150,
            width: 150,
            titlefont: {
              size: 9
            },
            xaxis: {
              showgrid: false,
              zeroline: false,
              showticklabels: false,
            },
            yaxis: {
              zeroline: false,
              showticklabels: false,
            }
          }
        }
      );
    });
  }

  shuffleArray(array) {
    for (var i = array.length - 1; i > 0; i--) {
      const j = Math.floor(Math.random() * (i + 1));
      const temp = array[i];
      array[i] = array[j];
      array[j] = temp;
    }
  }

  public get windowSimilarity() {
    return this.service.windowSimilarity;
  }
}