<?php
/**
 * Image size handling.
 *
 * @author    Nathan Wallace
 * @copyright Nathan Wallace
 * @license   https://www.gnu.org/licenses/gpl-2.0.html GPL-2.0-or-later
 * @link      https://wallacecreative.agency
 */

namespace Anselm;

use Anselm\Contracts\Bootable;
use Anselm\Tools\HookAnnotation;

class ImageSizes implements Bootable
{
	use HookAnnotation;

	/**
	 * Width size to scale large images down to.
	 *
	 * @since 1.0.0
	 */
	protected int $threshold_width = 3480;

	/**
	 * Bootstraps the class' actions/filters.
	 *
	 * @since 1.0.0
	 */
	public function boot(): void
	{
		$this->hookMethods();
	}

	/**
	 * Registers custom image sizes.
	 *
	 * @hook  init
	 * @since 1.0.0
	 */
	public function register(): void
	{
		add_image_size( 'anselm-16x9-lg', 2048, 1152, true );
		add_image_size( 'anselm-21x9-lg', 2048,  864, true );
		add_image_size( 'anselm-9x16-md', 1024, 1820, true );
		add_image_size( 'anselm-3x4-md',  1024, 1365, true );
		add_image_size( 'anselm-1x1-md',  1024, 1024, true );
	}

	/**
	 * Filters the image size dropdown in the editor so our custom sizes
	 * appear for selection.
	 *
	 * @hook  image_size_names_choose
	 * @since 1.0.0
	 */
	public function imageSizeNamesChoose( array $sizes ): array
	{
		$sizes[ 'anselm-16x9-lg'] = __( '16:9 (Landscape)', 'anselm' );
		$sizes[ 'anselm-21x9-lg'] = __( '21:9 (Landscape)', 'anselm' );
		$sizes[ 'anselm-9x16-md'] = __( '9:16 (Portrait)',  'anselm' );
		$sizes[ 'anselm-3x4-md']  = __( '3:4 (Portrait)',   'anselm' );
		$sizes[ 'anselm-1x1-md']  = __( '1:1 (Square)',     'anselm' );

		return $sizes;
	}

	/**
	 * Limit the big image threshold to our largest image.
	 *
	 * @hook  big_image_size_threshold 5
	 * @since 1.0.0
	 */
	public function bigImageSizeThreshold( int $threshold ): int
	{
		return $this->threshold_width > $threshold
		       ? $this->threshold_width
		       : $threshold;
	}

	/**
	 * Sets the default `post-thumbnail` size to a theme-specific size.
	 *
	 * @hook  post_thumbnail_size 5
	 * @since 1.0.0
	 */
	public function postThumbnailSize( string $size ): string
	{
		return 'post-thumbnail' === $size ? 'anselm-16x9-lg' : $size;
	}
}