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

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

  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;
  }

  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 getTopKSimilar() {
    this.labels = [];
    let abort = false;
    if (!this.windowSimilarity) {
      return;
    }
    let 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;
        }
        if (abort) {
          break;
        }
    }
    this.topk = topk;
    this.subplots = [];
    for (const windowIndex of this.topk) {
      const window = this.service.rawValues.map((channel) => channel.slice(windowIndex.index, windowIndex.index + this.service.windowSize));
      const data = [];
      window.forEach((channel, index) => {
        data.push({
          x: [...Array(channel.length).keys()],
          y: channel,
          type: 'line',
          xaxis: 'x',
          yaxis: `y${index + 2}`,
        });
      });
      const subplots = [];
      window.forEach((channel, index) => {
        subplots.push([`xy${index + 2}`]);
      });
      const plot = {
        index: windowIndex.index,
        data: data,
        layout: {
          grid: {
            rows: this.service.queryWindow.length,
            columns: 1,
            subplots: subplots,
          },
          showlegend: false,
          title: `Index: ${windowIndex.index.toString()}      Similarity: ${windowIndex.frequency.toString()}%`,
          hovermode: 'closest',
          autosize: true,
          margin: {
            l: 30,
            r: 30,
            t: 30,
            b: 0,
            pad: 4
          },
          height: 300,
          width: 150,
          titlefont: {
            size: 9
          },
          xaxis: {
            showgrid: false,
            zeroline: false,
            showticklabels: false,
          },
          yaxis: {
            zeroline: false,
            showticklabels: false,
          }
        }
      };
      window.forEach((channel, index) => {
        plot.layout[`yaxis${index + 2}`] = {
          zeroline: false,
          showticklabels: false,
        };
      });
      this.subplots.push(plot);
    }
  }
}