<?php

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namespace Evaluation;

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use Code_Snippets\DB;

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use Code_Snippets\Snippet;

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use Code_Snippets\Settings;

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use Code_Snippets\Snippet_Files;

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use function Code_Snippets\code_snippets;

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/**

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* Class for evaluating content snippets.

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*

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* @package Code_Snippets

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*/

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class Evaluate_Content {

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/**

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* Database class.

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*

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* @var DB

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*/

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private DB $db;

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/**

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* Cached list of active snippets.

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*

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* @var ?Snippet[]

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*/

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private ?array $active_snippets = null;

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/**

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* Class constructor.

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*

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* @param DB $db Database class instance.

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*/

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public function __construct( DB $db ) {

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$this->db = $db;

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add_action( 'init', array( $this, 'init' ) );

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}

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/**

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* Initialise class functions.

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*/

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public function init() {

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if ( Snippet_Files::is_active() ) {

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add_action( 'wp_head', [ $this, 'load_head_content_from_flat_files' ] );

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add_action( 'wp_footer', [ $this, 'load_footer_content_from_flat_files' ] );

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} else {

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add_action( 'wp_head', [ $this, 'load_head_content' ] );

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add_action( 'wp_footer', [ $this, 'load_footer_content' ] );

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}

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}

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/**

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* Print snippet code fetched from the database from a certain scope.

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*

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* @param string $scope Name of scope to print.

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*/

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private function print_content_snippets( string $scope ) {

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$scopes = [ 'head-content', 'footer-content' ];

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if ( is_null( $this->active_snippets ) ) {

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$this->active_snippets = $this->db->fetch_active_snippets( $scopes );

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}

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foreach ( $this->active_snippets as $snippet ) {

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if ( $scope === $snippet['scope'] ) {

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// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped

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echo "\n", $snippet['code'], "\n";

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}

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}

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}

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/**

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* Print head content snippets.

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*/

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public function load_head_content() {

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$this->print_content_snippets( 'head-content' );

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}

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/**

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* Print footer content snippets.

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*/

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public function load_footer_content() {

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$this->print_content_snippets( 'footer-content' );

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}

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public function load_head_content_from_flat_files() {

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$this->load_content_snippets_from_flat_files( 'head-content' );

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}

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public function load_footer_content_from_flat_files() {

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$this->load_content_snippets_from_flat_files( 'footer-content' );

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}

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private function populate_active_snippets_from_flat_files() {

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$handler = code_snippets()->snippet_handler_registry->get_handler( 'html' );

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$dir_name = $handler->get_dir_name();

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$ext = $handler->get_file_extension();

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$scopes = [ 'head-content', 'footer-content' ];

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$all_snippets = Snippet_Files::get_active_snippets_from_flat_files( $scopes, $dir_name );

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foreach ( $all_snippets as $snippet ) {

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$scope = $snippet['scope'];

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// Add file path information to the snippet for later use

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$table_name = Snippet_Files::get_hashed_table_name( $snippet['table'] );

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$base_path = Snippet_Files::get_base_dir( $table_name, $dir_name );

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$snippet['file_path'] = $base_path . '/' . $snippet['id'] . '.' . $ext;

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$this->active_snippets[ $scope ][] = $snippet;

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}

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}

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private function load_content_snippets_from_flat_files( string $scope ) {

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if ( is_null( $this->active_snippets ) ) {

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$this->populate_active_snippets_from_flat_files();

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}

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if ( ! isset( $this->active_snippets[ $scope ] ) ) {

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return;

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}

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foreach ( $this->active_snippets[ $scope ] as $snippet ) {

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require_once $snippet['file_path'];

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}

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}

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}

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