package templates

import (
	"fmt"
	"time"

	"technical.kiwi/website/internal/gallery"
)

templ GalleryGrid(images []gallery.Image) {
	if len(images) == 0 {
		<p class="gallery-empty">No images for this filter.</p>
	} else {
		for _, img := range images {
			<button
				type="button"
				class="gallery-item"
				hx-get={ fmt.Sprintf("/gallery/%s", gallery.URLPath(img.RelPath)) }
				hx-target="#modal-root"
				hx-swap="innerHTML"
				aria-label={ fmt.Sprintf("Open %s", gallery.AlbumLabel(img.Album)) }
			>
				if img.ThumbURL != "" {
					<img
						src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs="
						data-src={ img.ThumbURL }
						class="lazy-thumb"
						alt={ fmt.Sprintf("%s — %s", gallery.AlbumLabel(img.Album), formatDate(img.Date)) }
						loading="lazy"
						decoding="async"
						sizes="(max-width: 480px) 45vw, 160px"
					/>
				} else {
					<span class="gallery-placeholder" aria-hidden="true"></span>
				}
				@GalleryMediaIcon(img.IsVideo)
				if img.Collection != "" {
					<span class="gallery-album">{ img.Collection }</span>
				} else if img.Album != "" {
					<span class="gallery-album">{ gallery.AlbumLabel(img.Album) }</span>
				}
				if !img.Date.IsZero() {
					<span class="gallery-date">{ formatDate(img.Date) }</span>
				}
			</button>
		}
	}
}

templ GalleryMediaIcon(isVideo bool) {
	<span class="gallery-media-icon" aria-hidden="true">
		if isVideo {
			<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
				<path d="M17 10.5V7c0-.55-.45-1-1-1H4c-.55 0-1 .45-1 1v10c0 .55.45 1 1 1h12c.55 0 1-.45 1-1v-3.5l4 4v-11l-4 4z"></path>
			</svg>
		} else {
			<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
				<path d="M21 19V5c0-1.1-.9-2-2-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2zM8.5 13.5l2.5 3.01L14.5 12l4.5 6H5l3.5-4.5z"></path>
			</svg>
		}
	</span>
}

templ ImageModal(img gallery.Image, prevPath, nextPath string) {
	<div
		class="modal-backdrop"
		hx-on:click="if (event.target === this) this.remove()"
	>
		<div class="modal" role="dialog" aria-modal="true" aria-label={ modalAriaLabel(img) }>
			<button
				type="button"
				class="modal-close"
				onclick="document.getElementById('modal-root').innerHTML = ''"
				aria-label="Close"
			>
				&times;
			</button>
			<figure class="modal-figure">
				if img.IsVideo {
					<div class="modal-video-stack">
						<video src={ img.URL } controls autoplay playsinline preload="auto"></video>
					</div>
				} else {
					<img src={ img.URL } alt={ img.Filename }/>
				}
			</figure>
			<nav class="modal-nav" aria-label="Gallery navigation">
				if prevPath != "" {
					<button
						type="button"
						class="modal-nav-btn"
						hx-get={ fmt.Sprintf("/gallery/%s", gallery.URLPath(prevPath)) }
						hx-target="#modal-root"
						hx-swap="innerHTML"
					>
						&larr; Previous
					</button>
				} else {
					<span></span>
				}
				if nextPath != "" {
					<button
						type="button"
						class="modal-nav-btn"
						hx-get={ fmt.Sprintf("/gallery/%s", gallery.URLPath(nextPath)) }
						hx-target="#modal-root"
						hx-swap="innerHTML"
					>
						Next &rarr;
					</button>
				}
			</nav>
		</div>
	</div>
}

func formatDate(t time.Time) string {
	if t.IsZero() {
		return ""
	}
	return t.Format("Jan 2006")
}

func modalAriaLabel(img gallery.Image) string {
	if img.IsVideo {
		return "Video viewer"
	}
	return "Image viewer"
}