import {Component, Input, OnChanges, OnInit, SimpleChanges} from "@angular/core";
import {SideBarService} from "../library/sharedComponents/sidebar/sideBar.service";
import {Indicator, Stakeholder} from "../utils/entities/stakeholder";
import {IndicatorUtils} from "../utils/indicator-utils";

@Component({
  selector: 'indicators',
  templateUrl: './indicators.component.html'
})
export class IndicatorsComponent implements OnInit, OnChanges {

  @Input()
  public topicIndex: number = 0;
  @Input()
  public categoryIndex: number = 0;
  @Input()
  public subcategoryIndex: number = 0;
  @Input()
  public stakeholder: Stakeholder = null;
  public indicatorUtils: IndicatorUtils = new IndicatorUtils();
  /**
   * All charts and numbers
   */
  public charts: Indicator[] = [];
  public numbers: Indicator[] = [];
  /**
   * Displayed chart and numbers base on Top filters
   */
  public displayCharts: Indicator[] = [];
  public displayNumbers: Indicator[] = [];
  /**
   * Top filters
   */
  public chartType: string = 'all';
  public privacy: string = 'all';
  public status: string = 'all';
  public keyword: string = null;
  /**
   * Grid or List View
   */
  public grid: boolean = true;

  constructor(private sideBarService: SideBarService) {}

  ngOnInit(): void {
  }

  ngOnChanges(changes: SimpleChanges): void {
    if(this.canEdit) {
      this.charts = this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].
        subCategories[this.subcategoryIndex].charts;
      this.displayCharts = this.filterChartType(this.filterPrivacy(
        this.filterStatus(this.filterByKeyword(this.charts, this.keyword), this.status),
        this.privacy),
        this.chartType
      );
      this.numbers = this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].
        subCategories[this.subcategoryIndex].numbers;
      this.displayNumbers = this.filterPrivacy(this.filterStatus(
        this.filterByKeyword(this.numbers, this.keyword),
        this.status),
        this.privacy);
    }
  }

  onChartTypeChange(value) {
    this.displayCharts = this.filterChartType(this.charts, value);
  }

  onPrivacyChange(value) {
    this.displayCharts = this.filterPrivacy(this.charts, value);
    this.displayNumbers = this.filterPrivacy(this.numbers, value);
  }

  onStatusChange(value) {
    this.displayCharts = this.filterStatus(this.charts, value);
    this.displayNumbers = this.filterStatus(this.numbers, value);
  }

  onKeywordChange(value) {
    this.displayCharts = this.filterByKeyword(this.charts, value);
    this.displayNumbers = this.filterByKeyword(this.numbers, value);
  }

  filterChartType(indicators: Indicator[], value): Indicator[] {
    if (value === 'all') {
      return indicators;
    } else {
      return indicators.filter(indicator =>
        indicator.indicatorPaths.filter(indicatorPath => indicatorPath.type === value).length > 0);
    }
  }

  filterPrivacy(indicators: Indicator[], value): Indicator[] {
    if (value === 'all') {
      return indicators;
    } else {
      return indicators.filter(indicator => indicator.isPublic === (value === 'public'));
    }
  }

  filterStatus(indicators: Indicator[], value): Indicator[] {
    if (value === 'all') {
      return indicators;
    } else {
      return indicators.filter(indicator => indicator.isActive === (value === 'active'));
    }
  }

  filterByKeyword(indicators: Indicator[], value): Indicator[] {
    if (value === null || value === '') {
      return indicators;
    } else {
      return indicators.filter(indicator => indicator.name.includes(value) || indicator.description.includes(value));
    }
  }

  get open(): boolean {
    return this.sideBarService.open;
  }

  get canEdit() {
    return this.stakeholder &&
      this.stakeholder.topics[this.topicIndex] &&
      this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex] &&
      this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex];
  }

  public toggleOpen(event = null) {
    if (!event) {
      this.sideBarService.setOpen(!this.open);
    } else if (event && event['value'] === true) {
      this.sideBarService.setOpen(false);
    }
  }

  public changeGrid(value) {
    this.grid = value;
  }
}