<?php
/**
 * Includes -> Components -> Accessibility
 *
 */
if ( ! defined( 'ABSPATH' ) ) exit;


if ( ! function_exists( 'tbkkt_accessibility_prepare_inline_svg' ) ) :
	function tbkkt_accessibility_prepare_inline_svg( string $svg, bool $decorative, string $label ): string {
		$svg = trim( $svg );
		if ( $svg === '' ) return '';

		if ( $decorative ) :
			if ( stripos( $svg, 'aria-hidden=' ) === false ) :
				$svg = preg_replace( '/<svg\b/i', '<svg aria-hidden="true" focusable="false" ', $svg, 1 );
			endif;
		else :
			$label = trim( $label );
			if ( $label !== '' && stripos( $svg, 'aria-label=' ) === false && stripos( $svg, 'role=' ) === false ) :
				$esc = esc_attr( $label );
				$svg = preg_replace( '/<svg\b/i', '<svg role="img" aria-label="' . $esc . '" ', $svg, 1 );
			endif;
		endif;

		return $svg;
	}
endif;


if ( ! function_exists( 'tbkkt_accessibility_sanitize_role' ) ) :
	/**
	 * Sanitize ARIA role value
	 *
	 * @param string $role Role to sanitize.
	 * @return string Empty string if invalid, sanitized role otherwise.
	 */
	function tbkkt_accessibility_sanitize_role( string $role ): string {
		$valid_roles = array(
			'alert', 'alertdialog', 'application', 'article', 'banner', 'cell', 'checkbox', 'columnheader', 'combobox', 'complementary', 'contentinfo', 'definition', 'dialog', 'directory', 'document', 'feed', 'figure', 'form', 'grid', 'gridcell', 'group', 'heading', 'img', 'link', 'list', 'listbox', 'listitem', 'log', 'main', 'math', 'menu', 'menubar', 'menuitem', 'menuitemcheckbox', 'menuitemradio', 'navigation', 'none', 'note', 'option', 'presentation', 'progressbar', 'radio', 'radiogroup', 'region', 'row', 'rowgroup', 'rowheader', 'scrollbar', 'search', 'searchbox', 'separator', 'slider', 'spinbutton', 'status', 'switch', 'tab', 'table', 'tablist', 'tabpanel', 'term', 'textbox', 'timer', 'toolbar', 'tooltip', 'tree', 'treegrid', 'treeitem',
		);

		$cleaned = trim( $role );
		if ( $cleaned === '' ) return '';

		return in_array( $cleaned, $valid_roles, true ) ? $cleaned : '';
	}
endif;


if ( ! function_exists( 'tbkkt_accessibility_build_semantics_attrs' ) ) :
	function tbkkt_accessibility_build_semantics_attrs( array $attrs ): array {
		$result = array();

		$role = tbkkt_accessibility_sanitize_role( (string) ( $attrs['accessibilityRole'] ?? '' ) );
		if ( $role === '' ) return $result;

		$result['role'] = $role;

		$name_source = isset( $attrs['accessibilityNameSource'] )
			? trim( (string) $attrs['accessibilityNameSource'] )
			: 'auto';

		if ( $name_source === 'custom' ) :
			$label = isset( $attrs['accessibilityLabel'] )
				? trim( (string) $attrs['accessibilityLabel'] )
				: '';
			if ( $label !== '' && mb_strlen( $label ) <= 200 ) :
				$result['aria-label'] = $label;
			endif;
		elseif ( $name_source === 'labelledby' ) :
			$labelledby = isset( $attrs['accessibilityLabelledBy'] )
				? trim( (string) $attrs['accessibilityLabelledBy'] )
				: '';
			if ( $labelledby !== '' && mb_strlen( $labelledby ) <= 100 && preg_match( '/^[a-zA-Z0-9_\-\s]+$/', $labelledby ) ) :
				$result['aria-labelledby'] = $labelledby;
			endif;
		endif;

		if ( $role === 'dialog' && isset( $attrs['accessibilityAriaModal'] ) && $attrs['accessibilityAriaModal'] === true ) :
			$result['aria-modal'] = 'true';
		endif;

		return $result;
	}
endif;