<?php

declare(strict_types=1);

namespace LinkCheckup\Features\PlaceHighlight;

use function is_string;

final class PlaceHighlightFeature {

	private const STYLES_ACTION  = 'wp_enqueue_scripts';
	private const CONTENT_FILTER = 'the_content';
	private const LATE_PRIORITY  = 999;

	public function __construct(
		private PlaceHighlighter $place_highlighter,
		private PlaceStyles $place_styles
	) {
	}

	public function register(): void {
		add_action( self::STYLES_ACTION, $this->enqueue_styles( ... ) );
		add_filter(
			self::CONTENT_FILTER,
			$this->highlighted( ... ),
			self::LATE_PRIORITY
		);
	}

	public function enqueue_styles(): void {
		if ( $this->place_highlighter->is_requested() ) {
			$this->place_styles->enqueue();
		}
	}

	public function highlighted( mixed $content ): mixed {
		if ( ! is_string( $content ) ) {
			return $content;
		}

		return $this->place_highlighter->highlight( $content );
	}
}