<?php
/**
 * Shortcode entry points.
 *
 * @package AccordionFaq
 */

namespace AccordionFaq\Shortcode;

defined( 'ABSPATH' ) || exit;

use AccordionFaq\Frontend\Renderer;

/**
 * Class Shortcode
 *
 * Registers `[quick_faq]` (backward compatible) and `[accordion_faq]` (canonical).
 */
class Shortcode {

	/**
	 * Renderer.
	 *
	 * @var Renderer
	 */
	private $renderer;

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

	/**
	 * Register hooks.
	 *
	 * @return void
	 */
	public function register() {
		add_action( 'init', array( $this, 'add_shortcodes' ) );
	}

	/**
	 * Register the shortcodes.
	 *
	 * @return void
	 */
	public function add_shortcodes() {
		add_shortcode( 'quick_faq', array( $this, 'render' ) );
		add_shortcode( 'accordion_faq', array( $this, 'render' ) );
	}

	/**
	 * Shortcode callback.
	 *
	 * @param array|string $atts Shortcode attributes.
	 * @return string
	 */
	public function render( $atts ) {
		$atts = shortcode_atts(
			array(
				'id'         => 0,   // Backward compatibility: taxonomy term ID.
				'term'       => 0,
				'category'   => '',
				'ids'        => '',
				'style'      => '',
				'mode'       => '',
				'engine'     => '',
				'heading'    => '',
				'icon'       => '',
				'open_first' => '',
				'orderby'    => '',
				'order'      => '',
				'limit'      => '',
				'search'     => '',
				'filter'     => '',
				'expand_all' => '',
				'toc'        => '',
				'schema'     => '',
				'per_page'   => '',
				'class'      => '',
			),
			is_array( $atts ) ? array_change_key_case( $atts, CASE_LOWER ) : array(),
			'quick_faq'
		);

		// Remove empty overrides so renderer defaults (from settings) apply.
		$atts = array_filter(
			$atts,
			static function ( $value ) {
				return '' !== $value && null !== $value;
			}
		);

		return $this->renderer->render( $atts );
	}
}