<?php
namespace Code_Snippets\Integration;
use Code_Snippets\Core\DB;
use Code_Snippets\Flat_Files\Snippet_Files;
use Code_Snippets\Model\Snippet;
use function Code_Snippets\code_snippets;
/**
* Class for evaluating content snippets.
*
* @package Code_Snippets
*/
class Evaluate_Content {
/**
* Database class.
*
* @var DB
*/
private DB $db;
/**
* Cached list of active snippets.
*
* @var ?Snippet[]
*/
private ?array $active_snippets = null;
/**
* Class constructor.
*
* @param DB $db Database class instance.
*/
public function __construct( DB $db ) {
$this->db = $db;
add_action( 'init', array( $this, 'init' ) );
}
/**
* Initialise class functions.
*/
public function init() {
add_action( 'wp_head', [ $this, 'load_head_content' ] );
add_action( 'wp_body_open', [ $this, 'load_body_content' ] );
add_action( 'wp_footer', [ $this, 'load_footer_content' ] );
}
/**
* Print snippet code fetched from the database from a certain scope.
*
* @param string $scope Name of scope to print.
*/
private function print_content_snippets( string $scope ) {
if ( Snippet_Files::is_active() ) {
if ( is_null( $this->active_snippets ) ) {
$this->populate_active_snippets_from_flat_files();
}
if ( isset( $this->active_snippets[ $scope ] ) ) {
foreach ( $this->active_snippets[ $scope ] as $snippet ) {
require_once $snippet['file_path'];
}
}
} else {
$scopes = [ 'head-content', 'body-content', 'footer-content' ];
if ( is_null( $this->active_snippets ) ) {
$this->active_snippets = $this->db->fetch_active_snippets( $scopes );
}
foreach ( $this->active_snippets as $snippet ) {
if ( $scope === $snippet['scope'] ) {
// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
echo "\n", $snippet['code'], "\n";
}
}
}
}
/**
* Print head content snippets.
*
* @return void
*/
public function load_head_content() {
$this->print_content_snippets( 'head-content' );
}
/**
* Print body content snippets (requires theme to call wp_body_open).
*
* @return void
*/
public function load_body_content() {
$this->print_content_snippets( 'body-content' );
}
/**
* Print footer content snippets.
*
* @return void
*/
public function load_footer_content() {
$this->print_content_snippets( 'footer-content' );
}
/**
* Populate the active snippets from flat files.
*
* @return void
*/
private function populate_active_snippets_from_flat_files() {
$handler = code_snippets()->snippet_handler_registry->get_handler( 'html' );
$dir_name = $handler->get_dir_name();
$ext = $handler->get_file_extension();
$scopes = [ 'head-content', 'body-content', 'footer-content' ];
$all_snippets = Snippet_Files::get_active_snippets_from_flat_files( $scopes, $dir_name );
foreach ( $all_snippets as $snippet ) {
$scope = $snippet['scope'];
// Add file path information to the snippet for later use.
$table_name = Snippet_Files::get_hashed_table_name( $snippet['table'] );
$base_path = Snippet_Files::get_base_dir( $table_name, $dir_name );
$snippet['file_path'] = $base_path . '/' . $snippet['id'] . '.' . $ext;
$this->active_snippets[ $scope ][] = $snippet;
}
}
}