import { ChangeDetectionStrategy, Component, OnInit, OnDestroy } from '@angular/core';
import { NavbarComponent } from '../../shared/components/navbar/navbar.component';
import { NgFor } from '@angular/common';

@Component({
  selector: 'app-landing-page',
  standalone: true,
  imports: [NavbarComponent, NgFor],
  templateUrl: './landing.component.html',
  changeDetection: ChangeDetectionStrategy.OnPush,
})
export class LandingComponent implements OnInit, OnDestroy {
  currentSlide = 0;
  private autoplayInterval: ReturnType<typeof setInterval> | undefined;

  ngOnInit() {
    this.startAutoplay();
  }

  ngOnDestroy() {
    this.stopAutoplay();
  }

  prevSlide() {
    this.currentSlide = this.currentSlide === 0 ? 1 : 0;
    this.resetAutoplay();
  }

  nextSlide() {
    this.currentSlide = this.currentSlide === 1 ? 0 : 1;
    this.resetAutoplay();
  }

  goToSlide(index: number) {
    this.currentSlide = index;
    this.resetAutoplay();
  }

  private startAutoplay() {
    this.autoplayInterval = setInterval(() => {
      this.nextSlide();
    }, 5000);
  }

  private stopAutoplay() {
    if (this.autoplayInterval) {
      clearInterval(this.autoplayInterval);
    }
  }

  private resetAutoplay() {
    this.stopAutoplay();
    this.startAutoplay();
  }
}