---
import CategoryNav from './CategoryNav.astro';
import Slideshow from './Slideshow.astro';
import SlideControls from './SlideControls.astro';
import favorites from '../../data/favorites.json';

// Auto-détection des images
const allImages = import.meta.glob<{ default: ImageMetadata }>('/src/assets/images/photos/categories/**/*.{jpg,jpeg,png,webp}');

// Charger les images favorites
const favoriteImages = await Promise.all(
  favorites.map(async (relativePath: string) => {
    const fullPath = `/src/assets/images/photos/categories/${relativePath}`;
    const loader = allImages[fullPath];
    if (!loader) {
      console.warn(`Image favorite non trouvée: ${fullPath}`);
      return null;
    }
    const img = await loader();
    const filename = relativePath.split('/').pop() || '';
    const title = filename
      .replace(/\.[^/.]+$/, '')
      .replace(/-/g, ' ')
      .replace(/_/g, ' ');
    return {
      src: img.default,  // ImageMetadata pour <Image>
      alt: title,
      title: title,
      category: relativePath.split('/')[0]
    };
  })
);

// Filtrer les nulls (images non trouvées)
const images = favoriteImages.filter(img => img !== null);

// Préparation des données pour JavaScript (avec URL au lieu de ImageMetadata)
const imagesForJS = JSON.stringify(images.map(img => ({
  src: img.src.src,  // Extraire l'URL de ImageMetadata
  alt: img.alt,
  title: img.title,
  category: img.category
})));
---

<div id="photo-gallery" class="gallery-container">
  <CategoryNav currentCategory="" />
  <Slideshow images={images} />
  <SlideControls />
</div>

<script is:inline define:vars={{ imagesForJS }}>
  window.galleryData = {
    images: JSON.parse(imagesForJS),
    currentCategory: 'favorites'
  };

  // PhotoGallerySlideshow controller
  class PhotoGallerySlideshow {
    constructor() {
      this.images = window.galleryData?.images || [];
      this.currentIndex = 0;
      this.isPlaying = true;
      this.autoplayInterval = null;
      this.transitionDuration = 800;
      this.autoplaySpeed = 5000;

      this.init();
    }

    init() {
      if (this.images.length === 0) {
        console.warn('Aucune image trouvée dans galleryData');
        return;
      }

      this.bindEvents();
      this.startAutoplay();
      this.preloadNextImages();
      this.updatePlayPauseButton();
    }

    bindEvents() {
      document.getElementById('prev-btn')?.addEventListener('click', () => this.prevSlide());
      document.getElementById('next-btn')?.addEventListener('click', () => this.nextSlide());
      document.getElementById('play-pause-btn')?.addEventListener('click', () => this.toggleAutoplay());

      document.querySelectorAll('.indicator').forEach((btn, index) => {
        btn.addEventListener('click', () => this.goToSlide(index));
      });

      document.addEventListener('keydown', (e) => {
        switch(e.key) {
          case 'ArrowLeft':
            e.preventDefault();
            this.prevSlide();
            break;
          case 'ArrowRight':
            e.preventDefault();
            this.nextSlide();
            break;
          case ' ':
            e.preventDefault();
            this.toggleAutoplay();
            break;
          case 'Escape':
            if (window.history.length > 1) {
              history.back();
            } else {
              window.location.href = '/';
            }
            break;
        }
      });

      this.setupTouchEvents();

      if (!this.isMobile()) {
        const slideshow = document.getElementById('slideshow-container');
        slideshow?.addEventListener('mouseenter', () => this.pauseAutoplay());
        slideshow?.addEventListener('mouseleave', () => this.resumeAutoplay());
      }
    }

    setupTouchEvents() {
      const slideshow = document.getElementById('slideshow-container');
      if (!slideshow) return;

      let startX = 0;
      let startY = 0;

      slideshow.addEventListener('touchstart', (e) => {
        startX = e.touches[0].clientX;
        startY = e.touches[0].clientY;
      }, { passive: true });

      slideshow.addEventListener('touchend', (e) => {
        const endX = e.changedTouches[0].clientX;
        const endY = e.changedTouches[0].clientY;
        const deltaX = startX - endX;
        const deltaY = startY - endY;

        if (Math.abs(deltaX) > Math.abs(deltaY) && Math.abs(deltaX) > 50) {
          if (deltaX > 0) {
            this.nextSlide();
          } else {
            this.prevSlide();
          }
        }
      }, { passive: true });
    }

    goToSlide(index) {
      if (index === this.currentIndex || index < 0 || index >= this.images.length) return;

      const currentSlide = document.querySelector('.slide.active');
      const nextSlide = document.querySelector(`[data-index="${index}"]`);
      const currentIndicator = document.querySelector('.indicator.active');
      const nextIndicator = document.querySelector(`[data-slide="${index}"]`);

      if (currentSlide && nextSlide) {
        currentSlide.classList.remove('active');
        nextSlide.classList.add('active');
        currentIndicator?.classList.remove('active');
        nextIndicator?.classList.add('active');
        this.currentIndex = index;
        this.preloadNextImages();
      }
    }

    nextSlide() {
      const nextIndex = (this.currentIndex + 1) % this.images.length;
      this.goToSlide(nextIndex);
    }

    prevSlide() {
      const prevIndex = (this.currentIndex - 1 + this.images.length) % this.images.length;
      this.goToSlide(prevIndex);
    }

    toggleAutoplay() {
      if (this.isPlaying) {
        this.pauseAutoplay();
      } else {
        this.startAutoplay();
      }
      this.updatePlayPauseButton();
    }

    startAutoplay() {
      if (this.autoplayInterval) return;
      this.isPlaying = true;
      this.autoplayInterval = setInterval(() => this.nextSlide(), this.autoplaySpeed);
    }

    pauseAutoplay() {
      if (this.autoplayInterval) {
        clearInterval(this.autoplayInterval);
        this.autoplayInterval = null;
      }
      this.isPlaying = false;
    }

    resumeAutoplay() {
      if (!this.isPlaying) return;
      this.startAutoplay();
    }

    updatePlayPauseButton() {
      const playIcon = document.querySelector('.play-icon');
      const pauseIcon = document.querySelector('.pause-icon');

      if (this.isPlaying) {
        playIcon?.classList.add('hidden');
        pauseIcon?.classList.remove('hidden');
      } else {
        playIcon?.classList.remove('hidden');
        pauseIcon?.classList.add('hidden');
      }
    }

    preloadNextImages() {
      for (let i = 1; i <= 2; i++) {
        const nextIndex = (this.currentIndex + i) % this.images.length;
        const nextImage = this.images[nextIndex];

        if (nextImage && !document.querySelector(`img[src="${nextImage.src}"]`)) {
          const img = new Image();
          img.src = nextImage.src;
        }
      }
    }

    isMobile() {
      return window.innerWidth <= 768;
    }
  }

  document.addEventListener('DOMContentLoaded', () => {
    new PhotoGallerySlideshow();
  });
</script>

<style>
.gallery-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  background: #000000;
  color: #ffffff;
}
</style>