/*
 * Copyright (C) 2023 StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
import {AfterContentInit, Component, Input, OnDestroy, ViewContainerRef} from '@angular/core';
import {SCThings} from '@openstapps/core';

/**
 * Shows a horizontal list of action chips
 */
@Component({
  selector: 'stapps-section',
  templateUrl: 'section.component.html',
  styleUrls: ['section.component.scss'],
})
export class SectionComponent implements AfterContentInit, OnDestroy {
  @Input() title = '';

  @Input() item?: SCThings;

  mutationObserver: MutationObserver;

  swiper?: HTMLElement;

  constructor(readonly viewContainerRef: ViewContainerRef) {}

  ngAfterContentInit() {
    this.mutationObserver = new MutationObserver(() => {
      const simpleSwiper = this.viewContainerRef.element.nativeElement.querySelector('simple-swiper');
      if (!simpleSwiper) return;

      this.swiper = simpleSwiper;
    });
    this.mutationObserver.observe(this.viewContainerRef.element.nativeElement, {
      childList: true,
      subtree: true,
    });
  }

  slideNext() {
    if (this.swiper) {
      this.swiper.scrollBy({
        left: this.swiper.offsetWidth,
        behavior: 'smooth',
      });
    }
  }

  slidePrev() {
    if (this.swiper) {
      this.swiper.scrollBy({
        left: -this.swiper.offsetWidth,
        behavior: 'smooth',
      });
    }
  }

  ngOnDestroy() {
    this.mutationObserver.disconnect();
  }
}