AjaxShortcodes.php
193 lines
| 1 | <?php |
| 2 | |
| 3 | namespace NitroPack\Feature; |
| 4 | |
| 5 | class AjaxShortcodes { |
| 6 | const STAGE = "very_early"; |
| 7 | |
| 8 | private $shortcodes = array(); |
| 9 | private $scriptHandle = 'nitropack-ajax-shortcodes'; |
| 10 | private $processedShortcodes = []; |
| 11 | private $emptyScript = "let nitroAjaxShortcode = false"; |
| 12 | |
| 13 | private function generateNitroScLoader() { |
| 14 | if (empty($this->processedShortcodes)) return $this->emptyScript; |
| 15 | |
| 16 | $adminUrl = admin_url('admin-ajax.php'); |
| 17 | $js = <<<SCRIPT |
| 18 | (async () => { |
| 19 | let domIsReady = new Promise((resolve) => { |
| 20 | if (document.readyState !== 'complete') { |
| 21 | document.addEventListener('DOMContentLoaded', resolve); |
| 22 | } else { |
| 23 | resolve(); |
| 24 | } |
| 25 | }); |
| 26 | |
| 27 | let formData = new URLSearchParams(); |
| 28 | formData.append("action", "nitro_shortcode_ajax"); |
| 29 | formData.append("nonce", "NONCE_VALUE"); |
| 30 | formData.append("tags", "TAGS_JSON_DATA"); |
| 31 | |
| 32 | fetch('$adminUrl', { |
| 33 | method: "POST", |
| 34 | headers: { |
| 35 | "Content-Type": "application/x-www-form-urlencoded", |
| 36 | }, |
| 37 | body: formData.toString(), |
| 38 | }) |
| 39 | .then(response => response.json()) |
| 40 | .then(async (data) => { |
| 41 | let scData = data.data; |
| 42 | await domIsReady; |
| 43 | for (let key in scData) { |
| 44 | document.querySelectorAll(`.nitro-sc-load[data-sc-meta-id='\${key}']`).forEach(el => { |
| 45 | el.outerHTML = scData[key]; |
| 46 | }); |
| 47 | } |
| 48 | }) |
| 49 | .catch(error => { |
| 50 | console.error('Error:', error); |
| 51 | }); |
| 52 | })() |
| 53 | |
| 54 | SCRIPT; |
| 55 | |
| 56 | return str_replace( |
| 57 | [ |
| 58 | "NONCE_VALUE", |
| 59 | "TAGS_JSON_DATA" |
| 60 | ], |
| 61 | [ |
| 62 | $this->generateNonce($this->processedShortcodes), |
| 63 | base64_encode(json_encode($this->processedShortcodes)) |
| 64 | ], |
| 65 | $js |
| 66 | ); |
| 67 | } |
| 68 | |
| 69 | private function generateNonce($tags) { |
| 70 | return wp_create_nonce($this->getNonceAction($tags)); |
| 71 | } |
| 72 | |
| 73 | private function getNonceAction($tags) { |
| 74 | $jsons = array_map("json_encode", $tags); |
| 75 | sort($jsons); |
| 76 | return base64_encode(json_encode($jsons)); |
| 77 | } |
| 78 | /* Merge shortcodes from wp-config and site config */ |
| 79 | private function mergeShortcodes() { |
| 80 | |
| 81 | $siteConfig = get_nitropack()->getSiteConfig(); |
| 82 | $options = $siteConfig['options_cache']; |
| 83 | |
| 84 | $ajax_shortcodes = isset($options['ajaxShortcodes']) ? $options['ajaxShortcodes'] : null; //initially ajaxShortcodes is empty |
| 85 | |
| 86 | if (self::isEnabled() && (!empty($ajax_shortcodes['shortcodes']) && is_array($ajax_shortcodes['shortcodes']))) { |
| 87 | $this->shortcodes = $ajax_shortcodes['shortcodes']; |
| 88 | } |
| 89 | if (defined("NITROPACK_AJAX_SHORTCODES") && strpos(NITROPACK_AJAX_SHORTCODES, ',') !== false) { |
| 90 | $wp_config_shortcodes = explode(',', NITROPACK_AJAX_SHORTCODES); |
| 91 | $this->shortcodes = array_unique(array_merge($this->shortcodes, $wp_config_shortcodes)); |
| 92 | } |
| 93 | } |
| 94 | public function init($stage) { |
| 95 | if (!defined("NITROPACK_AJAX_SHORTCODES") && !self::isEnabled()) { |
| 96 | // This init method can be run at any stage. This gives the opportunity to define the constant at a later point |
| 97 | // For example in a MU plugin |
| 98 | return true; |
| 99 | } |
| 100 | $this->mergeShortcodes(); |
| 101 | //stop execution if no shortcodes are found |
| 102 | if (!$this->shortcodes) return; |
| 103 | |
| 104 | add_filter('pre_do_shortcode_tag', function ($out, $tag, $attr) { |
| 105 | |
| 106 | if (defined("NITRO_DOING_AJAX_SHORTCODES") && NITRO_DOING_AJAX_SHORTCODES) return $out; |
| 107 | |
| 108 | if (in_array($tag, $this->shortcodes)) { |
| 109 | $entry = ["tag" => $tag, "attr" => $attr]; |
| 110 | if (!in_array($entry, $this->processedShortcodes)) { |
| 111 | $this->processedShortcodes[] = $entry; |
| 112 | } |
| 113 | $np_out = '<span class="nitro-sc-load" data-sc-meta-id="' . base64_encode(json_encode($entry)) . '"></span>'; |
| 114 | |
| 115 | return $np_out; |
| 116 | } |
| 117 | |
| 118 | return $out; |
| 119 | }, 10, 3); |
| 120 | |
| 121 | |
| 122 | add_action('wp_ajax_nitro_shortcode_ajax', array($this, 'shortcodeAjax')); |
| 123 | add_action('wp_ajax_nopriv_nitro_shortcode_ajax', array($this, 'shortcodeAjax')); |
| 124 | |
| 125 | add_action('wp_enqueue_scripts', [$this, 'add_scripts']); |
| 126 | $this->startBuffering(); |
| 127 | } |
| 128 | |
| 129 | private function startBuffering() { |
| 130 | ob_start(function($buffer) { |
| 131 | return str_replace($this->emptyScript, $this->generateNitroScLoader(), $buffer); |
| 132 | }, 0, PHP_OUTPUT_HANDLER_FLUSHABLE | PHP_OUTPUT_HANDLER_REMOVABLE); |
| 133 | } |
| 134 | |
| 135 | public function add_scripts() { |
| 136 | wp_register_script($this->scriptHandle, '', [], '1.0.0', false); |
| 137 | wp_add_inline_script($this->scriptHandle, $this->emptyScript); |
| 138 | wp_enqueue_script($this->scriptHandle); |
| 139 | |
| 140 | add_filter('wp_inline_script_attributes', function ($attr, $js) { |
| 141 | |
| 142 | if(isset($attr['id']) && strpos($attr['id'], $this->scriptHandle) === 0) { |
| 143 | $attr = array_merge(array( 'nitro-exclude' => true ), $attr); |
| 144 | } |
| 145 | |
| 146 | return $attr; |
| 147 | |
| 148 | }, 10, 2); |
| 149 | } |
| 150 | |
| 151 | public function shortcodeAjax() { |
| 152 | if (!defined("NITRO_DOING_AJAX_SHORTCODES")) define("NITRO_DOING_AJAX_SHORTCODES", true); |
| 153 | $this->runShortcodes(); |
| 154 | |
| 155 | // In case a later hook is needed, we can and an option for it and use something like this |
| 156 | //if (did_action('plugins_loaded')) { |
| 157 | // $this->runShortcodes(); |
| 158 | //} else { |
| 159 | // add_action('plugins_loaded', [$this, 'runShortcodes']); |
| 160 | //} |
| 161 | } |
| 162 | |
| 163 | private function validateNonce($tags) { |
| 164 | if (empty($_POST['nonce']) || empty($_POST['tags']) || !is_string($_POST['tags'])) { |
| 165 | die(__('Security check', 'nitropack')); |
| 166 | } |
| 167 | |
| 168 | $action = $this->getNonceAction($tags); |
| 169 | if (!wp_verify_nonce($_POST['nonce'], $action)) die(__('Security check', 'nitropack')); |
| 170 | } |
| 171 | |
| 172 | public function runShortcodes() { |
| 173 | $tags = !empty($_POST["tags"]) && is_string($_POST["tags"]) ? json_decode(base64_decode($_POST['tags']), true) : []; |
| 174 | if (empty($tags)) wp_send_json_error(["message" => "Invalid shortcode input"], 400); |
| 175 | $this->validateNonce($tags); |
| 176 | |
| 177 | $resp = []; |
| 178 | foreach ($tags as $sc) { |
| 179 | $attrFlat = is_array($sc["attr"]) ? array_map(function ($k, $v) { |
| 180 | return "$k=\"$v\""; |
| 181 | }, array_keys($sc["attr"]), array_values($sc["attr"])) : []; |
| 182 | $arrKey = base64_encode(json_encode($sc)); |
| 183 | $resp[$arrKey] = do_shortcode("[{$sc['tag']} " . implode(" ", $attrFlat) . "]"); |
| 184 | } |
| 185 | |
| 186 | wp_send_json_success($resp); |
| 187 | } |
| 188 | public function isEnabled() { |
| 189 | $siteConfig = get_nitropack()->getSiteConfig(); |
| 190 | return !empty($siteConfig['options_cache']['ajaxShortcodes']['enabled']) |
| 191 | && $siteConfig['options_cache']['ajaxShortcodes']['enabled'] == 1; |
| 192 | } |
| 193 | } |