=> 'https://rankmath.com/kb/url-inspection-api-integration/',
		'pillar-content-internal-linking' => 'https://rankmath.com/kb/pillar-content-internal-linking/',
		'breadcrumbs-install'             => 'https://rankmath.com/kb/breadcrumbs/?#add-breadcrumbs-theme',
		'change-seo-score-backlink'       => 'https://rankmath.com/kb/filters-hooks-api-developer/?#change-seo-score-backlink',
		'unable-to-encrypt'               => 'https://rankmath.com/kb/fix-automatic-update-unavailable-for-this-plugin/?#unable-to-encrypt',
		'google-verification-kb'          => 'https://rankmath.com/kb/google-site-verification/',
		'bing-verification-kb'            => 'https://rankmath.com/kb/verify-your-site-with-bing-webmaster-tools/',
		'baidu-verification-kb'           => 'https://rankmath.com/kb/baidu-webmaster-tools-verification/',
		'yandex-verification-kb'          => 'https://rankmath.com/kb/verifying-your-domain-with-yandex/',
		'norton-verification-kb'          => 'https://rankmath.com/kb/verify-site-with-norton-safe-web/',
		'pinterest-verification-kb'       => 'https://rankmath.com/kb/pinterest-site-verification/',

		// SEO Analysis.
		'analysis-site-tagline'           => 'https://rankmath.com/kb/seo-analysis/?#site-tagline-test',
		'analysis-blog-public'            => 'https://rankmath.com/kb/seo-analysis/?#blog-public-test',
		'analysis-permalink-structure'    => 'https://rankmath.com/kb/seo-analysis/?#permalink-structure-test',
		'analysis-focus-keywords'         => 'https://rankmath.com/kb/seo-analysis/?#focus-keywords-test',
		'analysis-post-titles'            => 'https://rankmath.com/kb/seo-analysis/?#post-titles-missing-focus-keywords-test',
		'analysis-search-console'         => 'https://rankmath.com/kb/seo-analysis/?#search-console-test',
		'analysis-sitemaps'               => 'https://rankmath.com/kb/seo-analysis/?#sitemaps-test',
		'analysis-auto-update'            => 'https://rankmath.com/kb/seo-analysis/?#priority',

		// Social Media.
		'yt-link'                         => 'http://youtube.com/rankmath',
		'fb-group'                        => 'https://www.facebook.com/groups/rankmathseopluginwordpress/',

		// Other.
		'google-article-schema'           => 'https://developers.google.com/search/docs/data-types/article/?utm_campaign=Rank+Math',
		'create-facebook-app'             => 'https://www.youtube.com/watch?utm_source=Plugin&utm_campaign=WP&v=-XME8Q25omQ&feature=youtu.be',
	];

	/**
	 * Echo the link.
	 *
	 * @param string $id Id of the link to get.
	 * @param  string $medium Medium of the link to get.
	 */
	public static function the( $id, $medium = '' ) {
		echo self::get( $id, $medium ); // phpcs:ignore
	}

	/**
	 * Return the link.
	 *
	 * @param  string $id Id of the link to get.
	 * @param  string $medium Medium of the link to get.
	 * @return string
	 */
	public static function get( $id, $medium = '' ) {
		$links = self::get_links();
		$url   = isset( $links[ $id ] ) ? $links[ $id ] : '#';

		if ( empty( $medium ) ) {
			return $url;
		}

		return add_query_arg(
			[
				'utm_source'   => 'Plugin',
				'utm_medium'   => rawurlencode( $medium ),
				'utm_campaign' => 'WP',
			],
			$url
		);
	}

	/**
	 * Get links.
	 *
	 * @return array
	 */
	public static function get_links() {
		return self::$links;
	}
}