<?php



class WP_Scripts extends WP_Dependencies {
	
	public $base_url;

	
	public $content_url;

	
	public $default_version;

	
	public $in_footer = array();

	
	public $concat = '';

	
	public $concat_version = '';

	
	public $do_concat = false;

	
	public $print_html = '';

	
	public $print_code = '';

	
	public $ext_handles = '';

	
	public $ext_version = '';

	
	public $default_dirs;

	
	private $dependents_map = array();

	
	private $delayed_strategies = array( 'defer', 'async' );

	
	public function __construct() {
		$this->init();
		add_action( 'init', array( $this, 'init' ), 0 );
	}

	
	public function init() {
		
		do_action_ref_array( 'wp_default_scripts', array( &$this ) );
	}

	
	public function print_scripts( $handles = false, $group = false ) {
		return $this->do_items( $handles, $group );
	}

	
	public function print_scripts_l10n( $handle, $display = true ) {
		_deprecated_function( __FUNCTION__, '3.3.0', 'WP_Scripts::print_extra_script()' );
		return $this->print_extra_script( $handle, $display );
	}

	
	public function print_extra_script( $handle, $display = true ) {
		$output = $this->get_data( $handle, 'data' );
		if ( ! $output ) {
			return;
		}

		if ( ! $display ) {
			return $output;
		}

		wp_print_inline_script_tag( $output, array( 'id' => "{$handle}-js-extra" ) );

		return true;
	}

	
	private function are_all_dependents_in_footer( $handle ) {
		foreach ( $this->get_dependents( $handle ) as $dep ) {
			if ( isset( $this->groups[ $dep ] ) && 0 === $this->groups[ $dep ] ) {
				return false;
			}
		}
		return true;
	}

	
	public function do_item( $handle, $group = false ) {
		if ( ! parent::do_item( $handle ) ) {
			return false;
		}

		if ( 0 === $group && $this->groups[ $handle ] > 0 ) {
			$this->in_footer[] = $handle;
			return false;
		}

		if ( false === $group && in_array( $handle, $this->in_footer, true ) ) {
			$this->in_footer = array_diff( $this->in_footer, (array) $handle );
		}

		$obj = $this->registered[ $handle ];

		if ( null === $obj->ver ) {
			$ver = '';
		} else {
			$ver = $obj->ver ? $obj->ver : $this->default_version;
		}

		if ( isset( $this->args[ $handle ] ) ) {
			$ver = $ver ? $ver . '&amp;' . $this->args[ $handle ] : $this->args[ $handle ];
		}

		$src                   = $obj->src;
		$strategy              = $this->get_eligible_loading_strategy( $handle );
		$intended_strategy     = (string) $this->get_data( $handle, 'strategy' );
		$ie_conditional_prefix = '';
		$ie_conditional_suffix = '';
		$conditional           = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';

		if ( ! $this->is_delayed_strategy( $intended_strategy ) ) {
			$intended_strategy = '';
		}

		/*
		 * Move this script to the footer if:
		 * 1. The script is in the header group.
		 * 2. The current output is the header.
		 * 3. The intended strategy is delayed.
		 * 4. The actual strategy is not delayed.
		 * 5. All dependent scripts are in the footer.
		 */
		if (
			0 === $group &&
			0 === $this->groups[ $handle ] &&
			$intended_strategy &&
			! $this->is_delayed_strategy( $strategy ) &&
			$this->are_all_dependents_in_footer( $handle )
		) {
			$this->in_footer[] = $handle;
			return false;
		}

		if ( $conditional ) {
			$ie_conditional_prefix = "<!--[if {$conditional}]>\n";
			$ie_conditional_suffix = "<![endif]-->\n";
		}

		$before_script = $this->get_inline_script_tag( $handle, 'before' );
		$after_script  = $this->get_inline_script_tag( $handle, 'after' );

		if ( $before_script || $after_script ) {
			$inline_script_tag = $ie_conditional_prefix . $before_script . $after_script . $ie_conditional_suffix;
		} else {
			$inline_script_tag = '';
		}

		/*
		 * Prevent concatenation of scripts if the text domain is defined
		 * to ensure the dependency order is respected.
		 */
		$translations_stop_concat = ! empty( $obj->textdomain );

		$translations = $this->print_translations( $handle, false );
		if ( $translations ) {
			$translations = wp_get_inline_script_tag( $translations, array( 'id' => "{$handle}-js-translations" ) );
		}

		if ( $this->do_concat ) {
			
			$filtered_src = apply_filters( 'script_loader_src', $src, $handle );

			if (
				$this->in_default_dir( $filtered_src )
				&& ( $before_script || $after_script || $translations_stop_concat || $this->is_delayed_strategy( $strategy ) )
			) {
				$this->do_concat = false;

				// Have to print the so-far concatenated scripts right away to maintain the right order.
				_print_scripts();
				$this->reset();
			} elseif ( $this->in_default_dir( $filtered_src ) && ! $conditional ) {
				$this->print_code     .= $this->print_extra_script( $handle, false );
				$this->concat         .= "$handle,";
				$this->concat_version .= "$handle$ver";
				return true;
			} else {
				$this->ext_handles .= "$handle,";
				$this->ext_version .= "$handle$ver";
			}
		}

		$has_conditional_data = $conditional && $this->get_data( $handle, 'data' );

		if ( $has_conditional_data ) {
			echo $ie_conditional_prefix;
		}

		$this->print_extra_script( $handle );

		if ( $has_conditional_data ) {
			echo $ie_conditional_suffix;
		}

		// A single item may alias a set of items, by having dependencies, but no source.
		if ( ! $src ) {
			if ( $inline_script_tag ) {
				if ( $this->do_concat ) {
					$this->print_html .= $inline_script_tag;
				} else {
					echo $inline_script_tag;
				}
			}

			return true;
		}

		if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && str_starts_with( $src, $this->content_url ) ) ) {
			$src = $this->base_url . $src;
		}

		if ( ! empty( $ver ) ) {
			$src = add_query_arg( 'ver', $ver, $src );
		}

		
		$src = esc_url_raw( apply_filters( 'script_loader_src', $src, $handle ) );

		if ( ! $src ) {
			return true;
		}

		$attr = array(
			'src' => $src,
			'id'  => "{$handle}-js",
		);
		if ( $strategy ) {
			$attr[ $strategy ] = true;
		}
		if ( $intended_strategy ) {
			$attr['data-wp-strategy'] = $intended_strategy;
		}
		$tag  = $translations . $ie_conditional_prefix . $before_script;
		$tag .= wp_get_script_tag( $attr );
		$tag .= $after_script . $ie_conditional_suffix;

		
		$tag = apply_filters( 'script_loader_tag', $tag, $handle, $src );

		if ( $this->do_concat ) {
			$this->print_html .= $tag;
		} else {
			echo $tag;
		}

		return true;
	}

	
	public function add_inline_script( $handle, $data, $position = 'after' ) {
		if ( ! $data ) {
			return false;
		}

		if ( 'after' !== $position ) {
			$position = 'before';
		}

		$script   = (array) $this->get_data( $handle, $position );
		$script[] = $data;

		return $this->add_data( $handle, $position, $script );
	}

	
	public function print_inline_script( $handle, $position = 'after', $display = true ) {
		_deprecated_function( __METHOD__, '6.3.0', 'WP_Scripts::get_inline_script_data() or WP_Scripts::get_inline_script_tag()' );

		$output = $this->get_inline_script_data( $handle, $position );
		if ( empty( $output ) ) {
			return false;
		}

		if ( $display ) {
			echo $this->get_inline_script_tag( $handle, $position );
		}
		return $output;
	}

	
	public function get_inline_script_data( $handle, $position = 'after' ) {
		$data = $this->get_data( $handle, $position );
		if ( empty( $data ) || ! is_array( $data ) ) {
			return '';
		}

		return trim( implode( "\n", $data ), "\n" );
	}

	
	public function get_inline_script_tag( $handle, $position = 'after' ) {
		$js = $this->get_inline_script_data( $handle, $position );
		if ( empty( $js ) ) {
			return '';
		}

		$id = "{$handle}-js-{$position}";

		return wp_get_inline_script_tag( $js, compact( 'id' ) );
	}

	
	public function localize( $handle, $object_name, $l10n ) {
		if ( 'jquery' === $handle ) {
			$handle = 'jquery-core';
		}

		if ( is_array( $l10n ) && isset( $l10n['l10n_print_after'] ) ) { // back compat, preserve the code in 'l10n_print_after' if present.
			$after = $l10n['l10n_print_after'];
			unset( $l10n['l10n_print_after'] );
		}

		if ( ! is_array( $l10n ) ) {
			_doing_it_wrong(
				__METHOD__,
				sprintf(
					/* translators: 1: $l10n, 2: wp_add_inline_script() */
					__( 'The %1$s parameter must be an array. To pass arbitrary data to scripts, use the %2$s function instead.' ),
					'<code>$l10n</code>',
					'<code>wp_add_inline_script()</code>'
				),
				'5.7.0'
			);

			if ( false === $l10n ) {
				// This should really not be needed, but is necessary for backward compatibility.
				$l10n = array( $l10n );
			}
		}

		if ( is_string( $l10n ) ) {
			$l10n = html_entity_decode( $l10n, ENT_QUOTES, 'UTF-8' );
		} elseif ( is_array( $l10n ) ) {
			foreach ( $l10n as $key => $value ) {
				if ( ! is_scalar( $value ) ) {
					continue;
				}

				$l10n[ $key ] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8' );
			}
		}

		$script = "var $object_name = " . wp_json_encode( $l10n ) . ';';

		if ( ! empty( $after ) ) {
			$script .= "\n$after;";
		}

		$data = $this->get_data( $handle, 'data' );

		if ( ! empty( $data ) ) {
			$script = "$data\n$script";
		}

		return $this->add_data( $handle, 'data', $script );
	}

	
	public function set_group( $handle, $recursion, $group = false ) {
		if ( isset( $this->registered[ $handle ]->args ) && 1 === $this->registered[ $handle ]->args ) {
			$calculated_group = 1;
		} else {
			$calculated_group = (int) $this->get_data( $handle, 'group' );
		}

		if ( false !== $group && $calculated_group > $group ) {
			$calculated_group = $group;
		}

		return parent::set_group( $handle, $recursion, $calculated_group );
	}

	
	public function set_translations( $handle, $domain = 'default', $path = '' ) {
		if ( ! isset( $this->registered[ $handle ] ) ) {
			return false;
		}

		
		$obj = $this->registered[ $handle ];

		if ( ! in_array( 'wp-i18n', $obj->deps, true ) ) {
			$obj->deps[] = 'wp-i18n';
		}

		return $obj->set_translations( $domain, $path );
	}

	
	public function print_translations( $handle, $display = true ) {
		if ( ! isset( $this->registered[ $handle ] ) || empty( $this->registered[ $handle ]->textdomain ) ) {
			return false;
		}

		$domain = $this->registered[ $handle ]->textdomain;
		$path   = '';

		if ( isset( $this->registered[ $handle ]->translations_path ) ) {
			$path = $this->registered[ $handle ]->translations_path;
		}

		$json_translations = load_script_textdomain( $handle, $domain, $path );

		if ( ! $json_translations ) {
			return false;
		}

		$output = <<<JS
( function( domain, translations ) {
	var localeData = translations.locale_data[ domain ] || translations.locale_data.messages;
	localeData[""].domain = domain;
	wp.i18n.setLocaleData( localeData, domain );
} )( "{$domain}", {$json_translations} );
JS;

		if ( $display ) {
			wp_print_inline_script_tag( $output, array( 'id' => "{$handle}-js-translations" ) );
		}

		return $output;
	}

	
	public function all_deps( $handles, $recursion = false, $group = false ) {
		$result = parent::all_deps( $handles, $recursion, $group );
		if ( ! $recursion ) {
			
			$this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
		}
		return $result;
	}

	
	public function do_head_items() {
		$this->do_items( false, 0 );
		return $this->done;
	}

	
	public function do_footer_items() {
		$this->do_items( false, 1 );
		return $this->done;
	}

	
	public function in_default_dir( $src ) {
		if ( ! $this->default_dirs ) {
			return true;
		}

		if ( str_starts_with( $src, '/' . WPINC . '/js/l10n' ) ) {
			return false;
		}

		foreach ( (array) $this->default_dirs as $test ) {
			if ( str_starts_with( $src, $test ) ) {
				return true;
			}
		}
		return false;
	}

	
	public function add_data( $handle, $key, $value ) {
		if ( ! isset( $this->registered[ $handle ] ) ) {
			return false;
		}

		if ( 'strategy' === $key ) {
			if ( ! empty( $value ) && ! $this->is_delayed_strategy( $value ) ) {
				_doing_it_wrong(
					__METHOD__,
					sprintf(
						/* translators: 1: $strategy, 2: $handle */
						__( 'Invalid strategy `%1$s` defined for `%2$s` during script registration.' ),
						$value,
						$handle
					),
					'6.3.0'
				);
				return false;
			} elseif ( ! $this->registered[ $handle ]->src && $this->is_delayed_strategy( $value ) ) {
				_doing_it_wrong(
					__METHOD__,
					sprintf(
						/* translators: 1: $strategy, 2: $handle */
						__( 'Cannot supply a strategy `%1$s` for script `%2$s` because it is an alias (it lacks a `src` value).' ),
						$value,
						$handle
					),
					'6.3.0'
				);
				return false;
			}
		}
		return parent::add_data( $handle, $key, $value );
	}

	
	private function get_dependents( $handle ) {
		// Check if dependents map for the handle in question is present. If so, use it.
		if ( isset( $this->dependents_map[ $handle ] ) ) {
			return $this->dependents_map[ $handle ];
		}

		$dependents = array();

		// Iterate over all registered scripts, finding dependents of the script passed to this method.
		foreach ( $this->registered as $registered_handle => $args ) {
			if ( in_array( $handle, $args->deps, true ) ) {
				$dependents[] = $registered_handle;
			}
		}

		// Add the handles dependents to the map to ease future lookups.
		$this->dependents_map[ $handle ] = $dependents;

		return $dependents;
	}

	
	private function is_delayed_strategy( $strategy ) {
		return in_array(
			$strategy,
			$this->delayed_strategies,
			true
		);
	}

	
	private function get_eligible_loading_strategy( $handle ) {
		$intended_strategy = (string) $this->get_data( $handle, 'strategy' );

		// Bail early if there is no intended strategy.
		if ( ! $intended_strategy ) {
			return '';
		}

		/*
		 * If the intended strategy is 'defer', limit the initial list of eligible
		 * strategies, since 'async' can fallback to 'defer', but not vice-versa.
		 */
		$initial_strategy = ( 'defer' === $intended_strategy ) ? array( 'defer' ) : null;

		$eligible_strategies = $this->filter_eligible_strategies( $handle, $initial_strategy );

		// Return early once we know the eligible strategy is blocking.
		if ( empty( $eligible_strategies ) ) {
			return '';
		}

		return in_array( 'async', $eligible_strategies, true ) ? 'async' : 'defer';
	}

	
	private function filter_eligible_strategies( $handle, $eligible_strategies = null, $checked = array() ) {
		// If no strategies are being passed, all strategies are eligible.
		if ( null === $eligible_strategies ) {
			$eligible_strategies = $this->delayed_strategies;
		}

		// If this handle was already checked, return early.
		if ( isset( $checked[ $handle ] ) ) {
			return $eligible_strategies;
		}

		// Mark this handle as checked.
		$checked[ $handle ] = true;

		// If this handle isn't registered, don't filter anything and return.
		if ( ! isset( $this->registered[ $handle ] ) ) {
			return $eligible_strategies;
		}

		// If the handle is not enqueued, don't filter anything and return.
		if ( ! $this->query( $handle, 'enqueued' ) ) {
			return $eligible_strategies;
		}

		$is_alias          = (bool) ! $this->registered[ $handle ]->src;
		$intended_strategy = $this->get_data( $handle, 'strategy' );

		// For non-alias handles, an empty intended strategy filters all strategies.
		if ( ! $is_alias && empty( $intended_strategy ) ) {
			return array();
		}

		// Handles with inline scripts attached in the 'after' position cannot be delayed.
		if ( $this->has_inline_script( $handle, 'after' ) ) {
			return array();
		}

		// If the intended strategy is 'defer', filter out 'async'.
		if ( 'defer' === $intended_strategy ) {
			$eligible_strategies = array( 'defer' );
		}

		$dependents = $this->get_dependents( $handle );

		// Recursively filter eligible strategies for dependents.
		foreach ( $dependents as $dependent ) {
			// Bail early once we know the eligible strategy is blocking.
			if ( empty( $eligible_strategies ) ) {
				return array();
			}

			$eligible_strategies = $this->filter_eligible_strategies( $dependent, $eligible_strategies, $checked );
		}

		return $eligible_strategies;
	}

	
	private function has_inline_script( $handle, $position = null ) {
		if ( $position && in_array( $position, array( 'before', 'after' ), true ) ) {
			return (bool) $this->get_data( $handle, $position );
		}

		return (bool) ( $this->get_data( $handle, 'before' ) || $this->get_data( $handle, 'after' ) );
	}

	
	public function reset() {
		$this->do_concat      = false;
		$this->print_code     = '';
		$this->concat         = '';
		$this->concat_version = '';
		$this->print_html     = '';
		$this->ext_version    = '';
		$this->ext_handles    = '';
	}
}