code-snippets / php / Integration / Evaluate_Content.php

Evaluate_Content.php in Code Snippets 4.0.0-beta.2, at php/Integration/Evaluate_Content.php

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1	<?php
2
3	namespace Code_Snippets\Integration;
4
5	use Code_Snippets\Core\DB;
6	use Code_Snippets\Flat_Files\Snippet_Files;
7	use function Code_Snippets\code_snippets;
8
9	/**
10	* Class for evaluating content snippets.
11	*
12	* @package Code_Snippets
13	*/
14	class Evaluate_Content {
15
16	/**
17	* Database class.
18	*
19	* @var DB
20	*/
21	private DB $db;
22
23	/**
24	* Cached list of active snippets, indexed by scope.
25	*
26	* @var ?array[]
27	*/
28	private ?array $active_snippets = null;
29
30	/**
31	* Class constructor.
32	*
33	* @param DB $db Database class instance.
34	*/
35	public function __construct( DB $db ) {
36	$this->db = $db;
37	add_action( 'init', [ $this, 'init' ] );
38	}
39
40	/**
41	* Initialize class functions.
42	*/
43	public function init() {
44	add_action( 'wp_head', [ $this, 'load_head_content' ] );
45	add_action( 'wp_body_open', [ $this, 'load_body_content' ] );
46	add_action( 'wp_footer', [ $this, 'load_footer_content' ] );
47	}
48
49	/**
50	* Populate the active snippets cache.
51	*
52	* This function fetches active snippets from the database and stores them in the
53	* $active_snippets property.
54	*/
55	private function populate_active_snippets() {
56	$scopes = [ 'head-content', 'body-content', 'footer-content' ];
57	$snippets = $this->db->fetch_active_snippets( $scopes );
58
59	foreach ( $snippets as $snippet ) {
60	$scope = $snippet['scope'];
61
62	if ( 'condition' !== $scope ) {
63	$this->active_snippets[ $scope ][] = $snippet;
64	}
65	}
66	}
67
68	/**
69	* Print snippet code fetched from the database from a certain scope.
70	*
71	* @param string $scope Name of scope to print.
72	*/
73	private function print_content_snippets( string $scope ) {
74	if ( is_null( $this->active_snippets ) ) {
75	if ( Snippet_Files::is_active() ) {
76	$this->populate_active_snippets_from_flat_files();
77	} else {
78	$this->populate_active_snippets();
79	}
80	}
81
82	if ( ! isset( $this->active_snippets[ $scope ] ) ) {
83	return;
84	}
85
86	foreach ( $this->active_snippets[ $scope ] as $snippet ) {
87	if ( isset( $snippet['id'] ) ) {
88	do_action( 'code_snippets/snippet_ran_on_page', (int) $snippet['id'], 'content' );
89	}
90
91	if ( Snippet_Files::is_active() ) {
92	require_once $snippet['file_path'];
93	} else {
94	// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
95	echo "\n", $snippet['code'], "\n";
96	}
97	}
98	}
99
100	/**
101	* Print head content snippets.
102	*
103	* @return void
104	*/
105	public function load_head_content() {
106	$this->print_content_snippets( 'head-content' );
107	}
108
109	/**
110	* Print body content snippets (requires theme to call wp_body_open).
111	*
112	* @return void
113	*/
114	public function load_body_content() {
115	$this->print_content_snippets( 'body-content' );
116	}
117
118	/**
119	* Print footer content snippets.
120	*
121	* @return void
122	*/
123	public function load_footer_content() {
124	$this->print_content_snippets( 'footer-content' );
125	}
126
127	/**
128	* Populate the active snippets from flat files.
129	*
130	* @return void
131	*/
132	private function populate_active_snippets_from_flat_files() {
133	$handler = code_snippets()->snippet_handler_registry->get_handler( 'html' );
134	$dir_name = $handler->get_dir_name();
135	$ext = $handler->get_file_extension();
136
137	$scopes = [ 'head-content', 'body-content', 'footer-content' ];
138	$all_snippets = Snippet_Files::get_active_snippets_from_flat_files( $scopes, $dir_name );
139
140	foreach ( $all_snippets as $snippet ) {
141	$scope = $snippet['scope'];
142
143	if ( 'condition' !== $scope ) {
144	// Add file path information to the snippet for later use.
145	$table_name = Snippet_Files::get_hashed_table_name( $snippet['table'] );
146	$base_path = Snippet_Files::get_base_dir( $table_name, $dir_name );
147	$snippet['file_path'] = $base_path . '/' . $snippet['id'] . '.' . $ext;
148
149	$this->active_snippets[ $scope ][] = $snippet;
150	}
151	}
152	}
153	}
154