import { Component, OnInit } from '@angular/core';
import {StateService} from '../state.service';

@Component({
  selector: 'app-labeling-window',
  templateUrl: './labeling-window.component.html',
  styleUrls: ['./labeling-window.component.css']
})
export class LabelingWindowComponent implements OnInit {
  public topk: number[];
  public subplots = [];
  public labels: boolean[] = [];
  private k = 12;

  constructor(private state: StateService) { }

  ngOnInit(): void {
    this.state.onNewTable.subscribe(() => this.showSamples());
  }

  async train() {
    this.state.labels = Object.assign({}, this.state.labels, this.labels);
    await this.state.getQueryWindow(this.state.labels);
    await this.state.update();
  }

  async updateQuery() {
    this.state.labels = Object.assign({}, this.state.labels, this.labels);
    await this.state.getQueryWindow(this.state.labels);
  }

  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 showSamples() {
    this.topk = this.state.lshData.average_candidates
      .filter((candidate) => this.state.labels[candidate] !== true)
      .slice(0, this.k);
    this.subplots = [];
    const values: number[][][] = await this.state.getWindow(this.topk);
    for (const idx in this.topk) {
      const window = values[idx];
      const data = [];
      window.forEach((channel: number[], index: number) => {
        data.push({
          x: [...Array(channel.length).keys()],
          y: channel,
          type: 'line',
          xaxis: 'x',
          yaxis: `y${index + 2}`,
        });
      });
      const subplots = [];
      window.forEach((channel: number[], index: number) => {
        subplots.push([`xy${index + 2}`]);
      });
      const plot = {
        index: this.topk[idx],
        data: data,
        layout: {
          grid: {
            rows: this.state.queryWindow.length,
            columns: 1,
            subplots: subplots,
          },
          showlegend: false,
          title: `Index: ${this.topk[idx].toString()}`,
          hovermode: 'closest',
          autosize: true,
          margin: {
            l: 30,
            r: 30,
            t: 30,
            b: 0,
            pad: 4
          },
          height: 100 * values[0].length,
          width: 300,
          titlefont: {
            size: 9
          },
          xaxis: {
            showgrid: false,
            zeroline: false,
            showticklabels: false,
          },
          yaxis: {
            zeroline: false,
            showticklabels: false,
          }
        }
      };
      window.forEach((channel: number[], index: number) => {
        plot.layout[`yaxis${index + 2}`] = {
          zeroline: false,
          showticklabels: false,
        };
      });
      this.subplots.push(plot);
    }
  }

  public get show() {
    return !!this.state.lshData;
  }
}