searchpro / inc / photon / class-berqCriticalCSS.php

class-berqCriticalCSS.php in BerqWP – All-In-One Optimization for Core Web Vitals, Cache, CDN, Images, CSS & JavaScript 1.9.3, at inc/photon/class-berqCriticalCSS.php

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1	<?php
2
3	class berqCriticalCSS {
4	function __construct() {
5	add_action('berqwp_get_critical_css', [$this, 'make_request'], 10, 1);
6	add_action('berqwp_flush_page_cache', [$this, 'delete_css_file']);
7	add_action('berqwp_flush_all_cache', [$this, 'delete_all_css_files']);
8	}
9
10	function get_css($page_slug) {
11
12	if ($this->can_make_request($page_slug)) {
13	as_enqueue_async_action('berqwp_get_critical_css', [$page_slug]);
14
15	return false;
16	}
17
18	$css_file = $this->get_file_path($page_slug);
19	return file_get_contents($css_file);
20
21	}
22
23	function make_request($page_slug, $page_url = null) {
24
25	if (!empty($page_url)) {
26	$page_url = $page_url . "?generating_critical_css";
27
28	} else {
29	$page_url = home_url() . $page_slug . "?generating_critical_css";
30
31	}
32
33
34	// $page_url = "https://wordpress-1288044-4671067.cloudwaysapps.com/?generating_critical_css";
35	$url = 'https://api-critical.hamzamairaj.dev/';
36
37	$params = [
38	'url' => rawurlencode($page_url),
39	'w' => '1440',
40	'h' => '100000',
41	];
42
43	$api_url_with_params = add_query_arg($params, $url);
44	$response = wp_remote_get($api_url_with_params, array('timeout' => 100, 'sslverify' => true));
45
46	// Check for errors
47	if (is_wp_error($response) && wp_remote_retrieve_response_code($response) !== 200) {
48	$error_message = $response->get_error_message();
49	return false;
50	} else {
51	// Retrieve the response body
52	$response_body = wp_remote_retrieve_body($response);
53
54	if (isset (json_decode($response_body, true)['status']) && json_decode($response_body, true)['status'] == 'error') {
55	return false;
56	}
57
58
59	if (!empty (trim($response_body)) && !str_contains($response_body, '</title>')) {
60	$this->store_css($page_slug, $response_body);
61	return $response_body;
62	} else {
63	as_enqueue_async_action('berqwp_get_critical_css', [$page_slug]);
64	}
65
66	return false;
67
68	}
69	}
70
71	function delete_css_file($page_slug) {
72	$file_path = $this->get_file_path($page_slug);
73	if (file_exists($file_path)) {
74	unlink($file_path);
75	}
76	}
77
78	function delete_all_css_files() {
79	$css_directory = optifer_cache . '/critical-css/';
80	berqwp_unlink_recursive($css_directory);
81	}
82
83	function store_css($page_slug, $critical_css) {
84	$css_file = $this->get_file_path($page_slug);
85	file_put_contents($css_file, $critical_css);
86
87	$this->update_cache($page_slug);
88	}
89
90	function get_file_path($page_slug) {
91	$css_directory = optifer_cache . '/critical-css/';
92
93	if (!file_exists($css_directory)) {
94	mkdir($css_directory, 0755, true);
95	}
96
97	$css_file = $css_directory . md5($page_slug) . '.css';
98
99	return $css_file;
100	}
101
102	function can_make_request($page_slug) {
103	$file_path = $this->get_file_path($page_slug);
104
105	if (!file_exists($file_path)) {
106	return true;
107	}
108
109	$file_mod_time = filemtime($file_path);
110	$current_time = time();
111	$file_age = $current_time - $file_mod_time;
112	$seven_days_in_seconds = 7 * 24 * 60 * 60;
113
114	// Check if the file is older than 7 days
115	if ($file_age > $seven_days_in_seconds) {
116	return true;
117	}
118
119	return false;
120	}
121
122	function add_css_to_buffer($buffer, $css) {
123	$criticalcss = sprintf('<style data-berqwp id="berqwp-critical-css">%s</style>', $css);
124	$buffer = preg_replace('/<head(\s[^>]*)?>/i', '<head$1>' . $criticalcss, $buffer);
125	return $buffer;
126	}
127
128	function update_cache($page_slug) {
129	require_once optifer_PATH . '/simplehtmldom/simple_html_dom.php';
130
131	$cache_directory = optifer_cache . '/html/';
132
133	// Create the cache directory if it doesn't exist
134	if (!file_exists($cache_directory)) {
135	mkdir($cache_directory, 0755, true);
136	}
137
138	$cache_file = $cache_directory . md5($page_slug) . '.html';
139	$css_file = $this->get_file_path($page_slug);
140
141	if (file_exists($cache_file) && file_exists($css_file)) {
142	$buffer = file_get_contents($cache_file);
143
144	// Load the HTML buffer into Simple HTML DOM
145	$html = str_get_html($buffer);
146
147	// Check if there's a <style> tag with id="berqwp-critical-css"
148	$style_tag = $html->find('style#berqwp-critical-css', 0);
149
150	if ($style_tag === null) {
151	$criticalcss = file_get_contents($css_file);
152	$buffer = $this->add_css_to_buffer($buffer, $criticalcss);
153
154	// update cache
155	$berqPageOptimizer = new berqPageOptimizer();
156	$berqBufferOptimize = new berqBufferOptimize();
157
158	$buffer = $berqBufferOptimize->css_optimize($buffer, true, false);
159	$berqPageOptimizer->set_slug($page_slug);
160
161	$beforeBodyClose = apply_filters( 'berqwp_buffer_before_closing_body', '' );
162	$buffer = str_replace('</body>', $beforeBodyClose . '</body>', $buffer);
163
164	$berqPageOptimizer->store_cache($buffer);
165	}
166
167	unset($html);
168	}
169
170
171	}
172
173	}
174
175	// new berqCriticalCSS();