import {Component, EventEmitter, Input, Output} from "@angular/core";
import {RouterHelper} from "../../utils/routerHelper.class";
import {properties} from "../../../../environments/environment";

@Component({
  selector: 'sdg',
  template: `
    <div class="uk-margin-small-bottom uk-flex uk-flex-between">
      <span *ngIf="viewAll && !lessBtn" class="clickable uk-h6 uk-flex uk-flex-middle" (click)="viewLessClick()">
        <icon class="uk-margin-small-right" name="arrow_back" flex="true" ratio="1.2"></icon>
        {{title}}
      </span>
      <span *ngIf="!viewAll || lessBtn" class="uk-text-light-grey">{{title}}</span>
      <a *ngIf="viewAll && lessBtn" (click)="viewAll = !viewAll; lessBtn=false;">View less</a>
      <a *ngIf="subjects && subjects.length > threshold && !viewAll"
         (click)="viewAllClick();">View more</a>
    </div>

    <div class="uk-margin-small-bottom uk-flex">
      <img src="assets/common-assets/common/The_Global_Goals_Icon_Color.svg"
           loading="lazy" alt="sdg_colors" style="width:27px; height:27px">
      <div class="uk-margin-small-left">
        <div *ngFor="let subject of subjects.slice(0, viewAll?subjects.length:threshold); let i=index" class="uk-text-truncate">
          <a [routerLink]=" properties.searchLinkToAdvancedResults"
             [queryParams]="routerHelper.createQueryParams(['f0', 'fv0', 'size'], ['sdg', subject, '50'])">
            {{subject}}
          </a>
        </div>
      </div>
    </div>
  `
})

export class SdgComponent {
  @Input() subjects: string[];
  @Input() viewAll: boolean = false;
  @Output() viewAllClicked  = new EventEmitter();
  public lessBtn: boolean = false;
  public threshold: number = 4;
  public routerHelper: RouterHelper = new RouterHelper();
  public properties = properties;
  public title: string = "Sustainable Development Goals (SDG) [Beta]";

  public viewAllClick() {
    if(this.subjects.length <= this.threshold*2) {
      this.viewAll = true;
      this.lessBtn = true;
    } else {
      this.viewAll = true;
      this.viewAllClicked.emit('sdg');
    }
  }

  public viewLessClick() {
    this.viewAll = false;
    this.viewAllClicked.emit("");
  }
}