<?php

/**

 * Server-side rendering of the `core/search` block.

 *

 * @package WordPress

 */

/**

 * Dynamically renders the `core/search` block.

 *

 * @since 6.3.0 Using block.json `viewScript` to register script, and update `view_script_handles()` only when needed.

 *

 * @param array    $attributes The block attributes.

 * @param string   $content    The saved content.

 * @param WP_Block $block      The parsed block.

 *

 * @return string The search block markup.

 */

function render_block_core_search( $attributes ) {

	// Older versions of the Search block defaulted the label and buttonText

	// attributes to `__( 'Search' )` meaning that many posts contain `<!--

	// wp:search /-->`. Support these by defaulting an undefined label and

	// buttonText to `__( 'Search' )`.

	$attributes = wp_parse_args(

		$attributes,

		array(

			'label'      => __( 'Search' ),

			'buttonText' => __( 'Search' ),

		)

	);

	$input_id            = wp_unique_id( 'wp-block-search__input-' );

	$classnames          = classnames_for_block_core_search( $attributes );

	$show_label          = ! empty( $attributes['showLabel'] );

	$use_icon_button     = ! empty( $attributes['buttonUseIcon'] );

	$show_button         = ( ! empty( $attributes['buttonPosition'] ) && 'no-button' === $attributes['buttonPosition'] ) ? false : true;

	$button_position     = $show_button ? $attributes['buttonPosition'] : null;

	$query_params        = ( ! empty( $attributes['query'] ) ) ? $attributes['query'] : array();

	$button              = '';

	$query_params_markup = '';

	$inline_styles       = styles_for_block_core_search( $attributes );

	$color_classes       = get_color_classes_for_block_core_search( $attributes );

	$typography_classes  = get_typography_classes_for_block_core_search( $attributes );

	$is_button_inside    = ! empty( $attributes['buttonPosition'] ) &&

		'button-inside' === $attributes['buttonPosition'];

	// Border color classes need to be applied to the elements that have a border color.

	$border_color_classes = get_border_color_classes_for_block_core_search( $attributes );

	// This variable is a constant and its value is always false at this moment.

	// It is defined this way because some values depend on it, in case it changes in the future.

	$open_by_default = false;

	$label_inner_html = empty( $attributes['label'] ) ? __( 'Search' ) : wp_kses_post( $attributes['label'] );

	$label            = new WP_HTML_Tag_Processor( sprintf( '<label %1$s>%2$s</label>', $inline_styles['label'], $label_inner_html ) );

	if ( $label->next_tag() ) {

		$label->set_attribute( 'for', $input_id );

		$label->add_class( 'wp-block-search__label' );

		if ( $show_label && ! empty( $attributes['label'] ) ) {

			if ( ! empty( $typography_classes ) ) {

				$label->add_class( $typography_classes );

			}

		} else {

			$label->add_class( 'screen-reader-text' );

		}

	}

	$input         = new WP_HTML_Tag_Processor( sprintf( '<input type="search" name="s" required %s/>', $inline_styles['input'] ) );

	$input_classes = array( 'wp-block-search__input' );

	if ( ! $is_button_inside && ! empty( $border_color_classes ) ) {

		$input_classes[] = $border_color_classes;

	}

	if ( ! empty( $typography_classes ) ) {

		$input_classes[] = $typography_classes;

	}

	if ( $input->next_tag() ) {

		$input->add_class( implode( ' ', $input_classes ) );

		$input->set_attribute( 'id', $input_id );

		$input->set_attribute( 'value', get_search_query() );

		$input->set_attribute( 'placeholder', $attributes['placeholder'] );

		// If it's interactive, enqueue the script module and add the directives.

		$is_expandable_searchfield = 'button-only' === $button_position;

		if ( $is_expandable_searchfield ) {

			wp_enqueue_script_module( '@wordpress/block-library/search/view' );

			$input->set_attribute( 'data-wp-bind--aria-hidden', '!context.isSearchInputVisible' );

			$input->set_attribute( 'data-wp-bind--tabindex', 'state.tabindex' );

			// Adding these attributes manually is needed until the Interactivity API

			// SSR logic is added to core.

			$input->set_attribute( 'aria-hidden', 'true' );

			$input->set_attribute( 'tabindex', '-1' );

		}

	}

	if ( count( $query_params ) > 0 ) {

		foreach ( $query_params as $param => $value ) {

			$query_params_markup .= sprintf(

				'<input type="hidden" name="%s" value="%s" />',

				esc_attr( $param ),

				esc_attr( $value )

			);

		}

	}

	if ( $show_button ) {

		$button_classes         = array( 'wp-block-search__button' );

		$button_internal_markup = '';

		if ( ! empty( $color_classes ) ) {

			$button_classes[] = $color_classes;

		}

		if ( ! empty( $typography_classes ) ) {

			$button_classes[] = $typography_classes;

		}

		if ( ! $is_button_inside && ! empty( $border_color_classes ) ) {

			$button_classes[] = $border_color_classes;

		}

		if ( ! $use_icon_button ) {

			if ( ! empty( $attributes['buttonText'] ) ) {

				$button_internal_markup = wp_kses_post( $attributes['buttonText'] );

			}

		} else {

			$button_classes[]       = 'has-icon';

			$button_internal_markup =

				'<svg class="search-icon" viewBox="0 0 24 24" width="24" height="24">

					<path d="M13 5c-3.3 0-6 2.7-6 6 0 1.4.5 2.7 1.3 3.7l-3.8 3.8 1.1 1.1 3.8-3.8c1 .8 2.3 1.3 3.7 1.3 3.3 0 6-2.7 6-6S16.3 5 13 5zm0 10.5c-2.5 0-4.5-2-4.5-4.5s2-4.5 4.5-4.5 4.5 2 4.5 4.5-2 4.5-4.5 4.5z"></path>

				</svg>';

		}

		// Include the button element class.

		$button_classes[] = wp_theme_get_element_class_name( 'button' );

		$button           = new WP_HTML_Tag_Processor( sprintf( '<button type="submit" %s>%s</button>', $inline_styles['button'], $button_internal_markup ) );

		if ( $button->next_tag() ) {

			$button->add_class( implode( ' ', $button_classes ) );

			if ( 'button-only' === $attributes['buttonPosition'] ) {

				$button->set_attribute( 'data-wp-bind--aria-label', 'state.ariaLabel' );

				$button->set_attribute( 'data-wp-bind--aria-controls', 'state.ariaControls' );

				$button->set_attribute( 'data-wp-bind--aria-expanded', 'context.isSearchInputVisible' );

				$button->set_attribute( 'data-wp-bind--type', 'state.type' );

				$button->set_attribute( 'data-wp-on--click', 'actions.openSearchInput' );

				// Adding these attributes manually is needed until the Interactivity

				// API SSR logic is added to core.

				$button->set_attribute( 'aria-label', __( 'Expand search field' ) );

				$button->set_attribute( 'aria-controls', 'wp-block-search__input-' . $input_id );

				$button->set_attribute( 'aria-expanded', 'false' );

				$button->set_attribute( 'type', 'button' );

			} else {

				$button->set_attribute( 'aria-label', wp_strip_all_tags( $attributes['buttonText'] ) );

			}

		}

	}

	$field_markup_classes = $is_button_inside ? $border_color_classes : '';

	$field_markup         = sprintf(

		'<div class="wp-block-search__inside-wrapper %s" %s>%s</div>',

		esc_attr( $field_markup_classes ),

		$inline_styles['wrapper'],

		$input . $query_params_markup . $button

	);

	$wrapper_attributes   = get_block_wrapper_attributes(

		array( 'class' => $classnames )

	);

	$form_directives      = '';

	// If it's interactive, add the directives.

	if ( $is_expandable_searchfield ) {

		$aria_label_expanded  = __( 'Submit Search' );

		$aria_label_collapsed = __( 'Expand search field' );

		$form_context         = wp_interactivity_data_wp_context(

			array(

				'isSearchInputVisible' => $open_by_default,

				'inputId'              => $input_id,

				'ariaLabelExpanded'    => $aria_label_expanded,

				'ariaLabelCollapsed'   => $aria_label_collapsed,

			)

		);

		$form_directives      = '

		 data-wp-interactive="core/search"

		 ' . $form_context . '

		 data-wp-class--wp-block-search__searchfield-hidden="!context.isSearchInputVisible"

		 data-wp-on-async--keydown="actions.handleSearchKeydown"

		 data-wp-on-async--focusout="actions.handleSearchFocusout"

		';

	}

	return sprintf(

		'<form role="search" method="get" action="%1s" %2s %3s>%4s</form>',

		esc_url( home_url( '/' ) ),

		$wrapper_attributes,

		$form_directives,

		$label . $field_markup

	);

}

/**

 * Registers the `core/search` block on the server.

 *

 * @since 5.2.0

 */

function register_block_core_search() {

	register_block_type_from_metadata(

		__DIR__ . '/search',

		array(

			'render_callback' => 'render_block_core_search',

		)

	);

}

add_action( 'init', 'register_block_core_search' );

/**

 * Builds the correct top level classnames for the 'core/search' block.

 *

 * @since 5.6.0

 *

 * @param array $attributes The block attributes.

 *

 * @return string The classnames used in the block.

 */

function classnames_for_block_core_search( $attributes ) {

	$classnames = array();

	if ( ! empty( $attributes['buttonPosition'] ) ) {

		if ( 'button-inside' === $attributes['buttonPosition'] ) {

			$classnames[] = 'wp-block-search__button-inside';

		}

		if ( 'button-outside' === $attributes['buttonPosition'] ) {

			$classnames[] = 'wp-block-search__button-outside';

		}

		if ( 'no-button' === $attributes['buttonPosition'] ) {

			$classnames[] = 'wp-block-search__no-button';

		}

		if ( 'button-only' === $attributes['buttonPosition'] ) {

			$classnames[] = 'wp-block-search__button-only wp-block-search__searchfield-hidden';

		}

	}

	if ( isset( $attributes['buttonUseIcon'] ) ) {

		if ( ! empty( $attributes['buttonPosition'] ) && 'no-button' !== $attributes['buttonPosition'] ) {

			if ( $attributes['buttonUseIcon'] ) {

				$classnames[] = 'wp-block-search__icon-button';

			} else {

				$classnames[] = 'wp-block-search__text-button';

			}

		}

	}

	return implode( ' ', $classnames );

}

/**

 * This generates a CSS rule for the given border property and side if provided.

 * Based on whether the Search block is configured to display the button inside

 * or not, the generated rule is injected into the appropriate collection of

 * styles for later application in the block's markup.

 *

 * @since 6.1.0

 *

 * @param array  $attributes     The block attributes.

 * @param string $property       Border property to generate rule for e.g. width or color.

 * @param string $side           Optional side border. The dictates the value retrieved and final CSS property.

 * @param array  $wrapper_styles Current collection of wrapper styles.

 * @param array  $button_styles  Current collection of button styles.

 * @param array  $input_styles   Current collection of input styles.

 */

function apply_block_core_search_border_style( $attributes, $property, $side, &$wrapper_styles, &$button_styles, &$input_styles ) {

	$is_button_inside = isset( $attributes['buttonPosition'] ) && 'button-inside' === $attributes['buttonPosition'];

	$path = array( 'style', 'border', $property );

	if ( $side ) {

		array_splice( $path, 2, 0, $side );

	}

	$value = _wp_array_get( $attributes, $path, false );

	if ( empty( $value ) ) {

		return;

	}

	if ( 'color' === $property && $side ) {

		$has_color_preset = str_contains( $value, 'var:preset|color|' );

		if ( $has_color_preset ) {

			$named_color_value = substr( $value, strrpos( $value, '|' ) + 1 );

			$value             = sprintf( 'var(--wp--preset--color--%s)', $named_color_value );

		}

	}

	$property_suffix = $side ? sprintf( '%s-%s', $side, $property ) : $property;

	if ( $is_button_inside ) {

		$wrapper_styles[] = sprintf( 'border-%s: %s;', $property_suffix, esc_attr( $value ) );

	} else {

		$button_styles[] = sprintf( 'border-%s: %s;', $property_suffix, esc_attr( $value ) );

		$input_styles[]  = sprintf( 'border-%s: %s;', $property_suffix, esc_attr( $value ) );

	}

}

/**

 * This adds CSS rules for a given border property e.g. width or color. It

 * injects rules into the provided wrapper, button and input style arrays for

 * uniform "flat" borders or those with individual sides configured.

 *

 * @since 6.1.0

 *

 * @param array  $attributes     The block attributes.

 * @param string $property       Border property to generate rule for e.g. width or color.

 * @param array  $wrapper_styles Current collection of wrapper styles.

 * @param array  $button_styles  Current collection of button styles.

 * @param array  $input_styles   Current collection of input styles.

 */

function apply_block_core_search_border_styles( $attributes, $property, &$wrapper_styles, &$button_styles, &$input_styles ) {

	apply_block_core_search_border_style( $attributes, $property, null, $wrapper_styles, $button_styles, $input_styles );

	apply_block_core_search_border_style( $attributes, $property, 'top', $wrapper_styles, $button_styles, $input_styles );

	apply_block_core_search_border_style( $attributes, $property, 'right', $wrapper_styles, $button_styles, $input_styles );

	apply_block_core_search_border_style( $attributes, $property, 'bottom', $wrapper_styles, $button_styles, $input_styles );

	apply_block_core_search_border_style( $attributes, $property, 'left', $wrapper_styles, $button_styles, $input_styles );

}

/**

 * Builds an array of inline styles for the search block.

 *

 * The result will contain one entry for shared styles such as those for the

 * inner input or button and a second for the inner wrapper should the block

 * be positioning the button "inside".

 *

 * @since 5.8.0

 *

 * @param  array $attributes The block attributes.

 *

 * @return array Style HTML attribute.

 */

function styles_for_block_core_search( $attributes ) {

	$wrapper_styles   = array();

	$button_styles    = array();

	$input_styles     = array();

	$label_styles     = array();

	$is_button_inside = ! empty( $attributes['buttonPosition'] ) &&

		'button-inside' === $attributes['buttonPosition'];

	$show_label       = ( isset( $attributes['showLabel'] ) ) && false !== $attributes['showLabel'];

	// Add width styles.

	$has_width = ! empty( $attributes['width'] ) && ! empty( $attributes['widthUnit'] );

	if ( $has_width ) {

		$wrapper_styles[] = sprintf(

			'width: %d%s;',

			esc_attr( $attributes['width'] ),

			esc_attr( $attributes['widthUnit'] )

		);

	}

	// Add border width and color styles.

	apply_block_core_search_border_styles( $attributes, 'width', $wrapper_styles, $button_styles, $input_styles );

	apply_block_core_search_border_styles( $attributes, 'color', $wrapper_styles, $button_styles, $input_styles );

	apply_block_core_search_border_styles( $attributes, 'style', $wrapper_styles, $button_styles, $input_styles );

	// Add border radius styles.

	$has_border_radius = ! empty( $attributes['style']['border']['radius'] );

	if ( $has_border_radius ) {

		$default_padding = '4px';

		$border_radius   = $attributes['style']['border']['radius'];

		if ( is_array( $border_radius ) ) {

			// Apply styles for individual corner border radii.

			foreach ( $border_radius as $key => $value ) {

				if ( null !== $value ) {

					// Convert camelCase key to kebab-case.

					$name = strtolower( preg_replace( '/(?<!^)[A-Z]/', '-$0', $key ) );

					// Add shared styles for individual border radii for input & button.

					$border_style    = sprintf(

						'border-%s-radius: %s;',

						esc_attr( $name ),

						esc_attr( $value )

					);

					$input_styles[]  = $border_style;

					$button_styles[] = $border_style;

					// Add adjusted border radius styles for the wrapper element

					// if button is positioned inside.

					if ( $is_button_inside && intval( $value ) !== 0 ) {

						$wrapper_styles[] = sprintf(

							'border-%s-radius: calc(%s + %s);',

							esc_attr( $name ),

							esc_attr( $value ),