<?php

/**

 * APIs to interact with global settings & styles.

 *

 * @package WordPress

 */

/**

 * Function to get the settings resulting of merging core, theme, and user data.

 *

 * @since 5.9.0

 *

 * @param array $path    Path to the specific setting to retrieve. Optional.

 *                       If empty, will return all settings.

 * @param array $context {

 *     Metadata to know where to retrieve the $path from. Optional.

 *

 *     @type string $block_name Which block to retrieve the settings from.

 *                              If empty, it'll return the settings for the global context.

 *     @type string $origin     Which origin to take data from.

 *                              Valid values are 'all' (core, theme, and user) or 'base' (core and theme).

 *                              If empty or unknown, 'all' is used.

 * }

 *

 * @return array The settings to retrieve.

 */

function wp_get_global_settings( $path = array(), $context = array() ) {

	if ( ! empty( $context['block_name'] ) ) {

		$path = array_merge( array( 'blocks', $context['block_name'] ), $path );

	}

	$origin = 'custom';

	if ( isset( $context['origin'] ) && 'base' === $context['origin'] ) {

		$origin = 'theme';

	}

	$settings = WP_Theme_JSON_Resolver::get_merged_data( $origin )->get_settings();

	return _wp_array_get( $settings, $path, $settings );

}

/**

 * Function to get the styles resulting of merging core, theme, and user data.

 *

 * @since 5.9.0

 *

 * @param array $path    Path to the specific style to retrieve. Optional.

 *                       If empty, will return all styles.

 * @param array $context {

 *     Metadata to know where to retrieve the $path from. Optional.

 *

 *     @type string $block_name Which block to retrieve the styles from.

 *                              If empty, it'll return the styles for the global context.

 *     @type string $origin     Which origin to take data from.

 *                              Valid values are 'all' (core, theme, and user) or 'base' (core and theme).

 *                              If empty or unknown, 'all' is used.

 * }

 *

 * @return array The styles to retrieve.

 */

function wp_get_global_styles( $path = array(), $context = array() ) {

	if ( ! empty( $context['block_name'] ) ) {

		$path = array_merge( array( 'blocks', $context['block_name'] ), $path );

	}

	$origin = 'custom';

	if ( isset( $context['origin'] ) && 'base' === $context['origin'] ) {

		$origin = 'theme';

	}

	$styles = WP_Theme_JSON_Resolver::get_merged_data( $origin )->get_raw_data()['styles'];

	return _wp_array_get( $styles, $path, $styles );

}

/**

 * Returns the stylesheet resulting of merging core, theme, and user data.

 *

 * @since 5.9.0

 *

 * @param array $types Types of styles to load. Optional.

 *                     It accepts 'variables', 'styles', 'presets' as values.

 *                     If empty, it'll load all for themes with theme.json support

 *                     and only [ 'variables', 'presets' ] for themes without theme.json support.

 *

 * @return string Stylesheet.

 */

function wp_get_global_stylesheet( $types = array() ) {

	// Return cached value if it can be used and exists.

	// It's cached by theme to make sure that theme switching clears the cache.

	$can_use_cached = (

		( empty( $types ) ) &&

		( ! defined( 'WP_DEBUG' ) || ! WP_DEBUG ) &&

		( ! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG ) &&

		( ! defined( 'REST_REQUEST' ) || ! REST_REQUEST ) &&

		! is_admin()

	);

	$transient_name = 'global_styles_' . get_stylesheet();

	if ( $can_use_cached ) {

		$cached = get_transient( $transient_name );

		if ( $cached ) {

			return $cached;

		}

	}

	$tree = WP_Theme_JSON_Resolver::get_merged_data();

	$supports_theme_json = WP_Theme_JSON_Resolver::theme_has_support();

	if ( empty( $types ) && ! $supports_theme_json ) {

		$types = array( 'variables', 'presets' );

	} elseif ( empty( $types ) ) {

		$types = array( 'variables', 'styles', 'presets' );

	}

	/*

	 * If variables are part of the stylesheet,

	 * we add them for all origins (default, theme, user).

	 * This is so themes without a theme.json still work as before 5.9:

	 * they can override the default presets.

	 * See https://core.trac.wordpress.org/ticket/54782

	 */

	$styles_variables = '';

	if ( in_array( 'variables', $types, true ) ) {

		$styles_variables = $tree->get_stylesheet( array( 'variables' ) );

		$types            = array_diff( $types, array( 'variables' ) );

	}

	/*

	 * For the remaining types (presets, styles), we do consider origins:

	 *

	 * - themes without theme.json: only the classes for the presets defined by core

	 * - themes with theme.json: the presets and styles classes, both from core and the theme

	 */

	$styles_rest = '';

	if ( ! empty( $types ) ) {

		$origins = array( 'default', 'theme', 'custom' );

		if ( ! $supports_theme_json ) {

			$origins = array( 'default' );

		}

		$styles_rest = $tree->get_stylesheet( $types, $origins );

	}

	$stylesheet = $styles_variables . $styles_rest;

	if ( $can_use_cached ) {

		// Cache for a minute.

		// This cache doesn't need to be any longer, we only want to avoid spikes on high-traffic sites.

		set_transient( $transient_name, $stylesheet, MINUTE_IN_SECONDS );

	}

	return $stylesheet;

}

/**

 * Returns a string containing the SVGs to be referenced as filters (duotone).

 *

 * @since 5.9.1

 *

 * @return string

 */

function wp_get_global_styles_svg_filters() {

	// Return cached value if it can be used and exists.

	// It's cached by theme to make sure that theme switching clears the cache.

	$can_use_cached = (

		( ! defined( 'WP_DEBUG' ) || ! WP_DEBUG ) &&

		( ! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG ) &&

		( ! defined( 'REST_REQUEST' ) || ! REST_REQUEST ) &&

		! is_admin()

	);

	$transient_name = 'global_styles_svg_filters_' . get_stylesheet();

	if ( $can_use_cached ) {

		$cached = get_transient( $transient_name );

		if ( $cached ) {

			return $cached;

		}

	}

	$supports_theme_json = WP_Theme_JSON_Resolver::theme_has_support();

	$origins = array( 'default', 'theme', 'custom' );

	if ( ! $supports_theme_json ) {

		$origins = array( 'default' );

	}

	$tree = WP_Theme_JSON_Resolver::get_merged_data();

	$svgs = $tree->get_svg_filters( $origins );

	if ( $can_use_cached ) {

		// Cache for a minute, same as wp_get_global_stylesheet.

		set_transient( $transient_name, $svgs, MINUTE_IN_SECONDS );

	}

	return $svgs;

}