<?php
/**
 * The [mapsemble] shortcode.
 *
 * @package Mapsemble
 */

namespace Mapsemble;

/**
 * Registers [mapsemble id="<map post id>" height="50vh"].
 *
 * The reach-everywhere surface: the classic editor, a Text widget, and the
 * shortcode or text module of every page builder. The block is nicer where
 * there is a block editor; this is what works where there is not.
 */
class Shortcode {

	/**
	 * Shared embed renderer.
	 *
	 * @var Embed
	 */
	private Embed $embed;

	/**
	 * Constructor.
	 *
	 * @param Embed $embed Shared embed renderer.
	 */
	public function __construct( Embed $embed ) {
		$this->embed = $embed;
	}

	/**
	 * Registers the shortcode.
	 */
	public function register(): void {
		add_shortcode( 'mapsemble', array( $this, 'render' ) );
	}

	/**
	 * Renders the shortcode.
	 *
	 * @param array|string $atts Shortcode attributes.
	 */
	public function render( $atts ): string {
		$atts = shortcode_atts(
			array(
				'id'                   => '',
				// A Mapsemble map id (or "sample"), for embedding a map this
				// site has no configuration post for.
				'map'                  => '',
				'height'               => '',
				'scroll_capture'       => '',
				'scroll_offset_top'    => '',
				'scroll_offset_bottom' => '',
				'fill_viewport'        => '',
				// A JSON object, single-quoted in practice so the editor does
				// not texturize its double quotes:
				// [mapsemble id="1" filters='{"category":"parks"}'].
				'filters'              => '',
			),
			is_array( $atts ) ? $atts : array(),
			'mapsemble'
		);

		if ( '' !== (string) $atts['id'] && '' !== (string) $atts['map'] ) {
			// An explicit refusal beats a silent precedence rule: whichever
			// attribute would have won, the author meant the other one.
			return current_user_can( \Mapsemble\Capabilities::EDIT_MAPS )
				? '<p><em>' . esc_html__( 'Mapsemble: use either id (a map built from this site) or map (a Mapsemble map id), not both.', 'mapsemble' ) . '</em></p>'
				: '<!-- mapsemble: both id and map given -->';
		}

		$args = array(
			'height'               => (string) $atts['height'],
			'scroll_capture'       => (string) $atts['scroll_capture'],
			'scroll_offset_top'    => (string) $atts['scroll_offset_top'],
			'scroll_offset_bottom' => (string) $atts['scroll_offset_bottom'],
			'fill_viewport'        => (string) $atts['fill_viewport'],
			'filters'              => (string) $atts['filters'],
		);

		return '' !== (string) $atts['map']
			? $this->embed->render_by_map_id( (string) $atts['map'], $args )
			: $this->embed->render( (int) $atts['id'], $args );
	}
}