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<?php |
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|
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namespace Boxzilla; |
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|
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class BoxLoader |
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{ |
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|
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/** |
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* @var Plugin |
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*/ |
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private $plugin; |
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|
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/** |
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* @var array |
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*/ |
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private $box_ids_to_load = array(); |
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|
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/** |
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* @var array |
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*/ |
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protected $options; |
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|
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/** |
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* Constructor |
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* |
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* @param Plugin $plugin |
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* @param array $options |
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*/ |
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public function __construct(Plugin $plugin, array $options) |
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{ |
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$this->plugin = $plugin; |
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$this->options = $options; |
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} |
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|
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/** |
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* Initializes the plugin, runs on `wp` hook. |
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*/ |
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public function init() |
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{ |
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$this->box_ids_to_load = $this->filter_boxes(); |
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|
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// Only add other hooks if necessary |
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if (count($this->box_ids_to_load) > 0) { |
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add_action('wp_footer', array( $this, 'print_boxes_content' ), 1); |
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add_action('wp_enqueue_scripts', array( $this, 'load_assets' ), 90); |
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} |
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} |
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|
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/** |
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* Get global rules for all boxes |
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* |
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* @return array |
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*/ |
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protected function get_filter_rules() |
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{ |
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$rules = get_option('boxzilla_rules', array()); |
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|
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if (! is_array($rules)) { |
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return array(); |
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} |
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|
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return $rules; |
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} |
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|
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|
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/** |
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* Match a string against an array of patterns, glob-style. |
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* |
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* @param string $string |
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* @param array $patterns |
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* |
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* @return boolean |
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*/ |
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protected function match_patterns($string, $patterns, $contains = false) |
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{ |
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$string = strtolower($string); |
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|
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foreach ($patterns as $pattern) { |
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$pattern = rtrim($pattern, '/'); |
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$pattern = strtolower($pattern); |
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|
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// contains means we should do a simple occurrence check |
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// does not support wildcards |
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if ($contains) { |
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return strpos($string, $pattern) !== false; |
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} |
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|
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if (function_exists('fnmatch')) { |
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$match = fnmatch($pattern, $string); |
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} else { |
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$match = ($pattern === $string); |
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} |
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|
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if ($match) { |
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return true; |
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} |
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} |
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|
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return false; |
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} |
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|
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/** |
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* @return string |
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*/ |
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protected function get_request_url() |
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{ |
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// strip trailing slashes |
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$request_uri = rtrim($_SERVER['REQUEST_URI'], '/'); |
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return $request_uri; |
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} |
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|
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/** |
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* Check if this rule passes (conditional matches expected value) |
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* |
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* @param string $condition |
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* @param string $value |
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* @param boolean $qualifier |
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* |
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* @return bool |
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*/ |
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protected function match_rule($condition, $value, $qualifier = true) |
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{ |
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$matched = false; |
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|
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// cast value to array & trim whitespace or excess comma's |
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$value = array_map('trim', explode(',', rtrim(trim($value), ','))); |
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|
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switch ($condition) { |
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case 'everywhere': |
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$matched = true; |
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break; |
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|
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case 'is_url': |
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$url = $this->get_request_url(); |
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$matched = $this->match_patterns($url, $value, $qualifier === 'contains' || $qualifier === 'not_contains'); |
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break; |
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|
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case 'is_referer': |
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if (! empty($_SERVER['HTTP_REFERER'])) { |
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$referer = $_SERVER['HTTP_REFERER']; |
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$matched = $this->match_patterns($referer, $value, $qualifier === 'contains' || $qualifier === 'not_contains'); |
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} |
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break; |
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|
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case 'is_post_type': |
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$post_type = (string) get_post_type(); |
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$matched = in_array($post_type, (array) $value); |
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break; |
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|
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case 'is_single': |
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case 'is_post': |
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// convert to empty string if array with just empty string in it |
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$value = ($value === array( '' )) ? '' : $value; |
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$matched = is_single($value); |
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break; |
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|
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case 'is_post_in_category': |
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$matched = is_singular('post') && has_category($value); |
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break; |
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|
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|
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case 'is_page': |
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$matched = is_page($value); |
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break; |
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|
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case 'is_post_with_tag': |
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$matched = is_singular('post') && has_tag($value); |
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break; |
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|
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case 'is_user_logged_in': |
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$matched = is_user_logged_in(); |
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break; |
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} |
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|
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/** |
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* Filters whether a given box rule matches the condition and expected value. |
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* |
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* The dynamic portion of the hook, `$condition`, refers to the condition being matched. |
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* |
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* @param boolean $matched |
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* @param array $value |
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*/ |
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$matched = apply_filters('boxzilla_box_rule_matches_' . $condition, $matched, $value); |
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|
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// if qualifier is set to false, we need to reverse this value here. |
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if (! $qualifier || $qualifier === 'not_contains') { |
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$matched = ! $matched; |
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} |
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|
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return $matched; |
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} |
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|
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/** |
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* Checks which boxes should be loaded for this request. |
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* |
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* @return array |
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*/ |
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private function filter_boxes() |
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{ |
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$box_ids_to_load = array(); |
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$rules = $this->get_filter_rules(); |
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|
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foreach ($rules as $box_id => $box_rules) { |
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$matched = false; |
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$comparision = isset($box_rules['comparision']) ? $box_rules['comparision'] : 'any'; |
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|
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// loop through all rules for all boxes |
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foreach ($box_rules as $rule) { |
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|
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// skip faulty values (and comparision rule) |
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if (empty($rule['condition'])) { |
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continue; |
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} |
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|
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$qualifier = isset($rule['qualifier']) ? $rule['qualifier'] : true; |
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$matched = $this->match_rule($rule['condition'], $rule['value'], $qualifier); |
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|
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// break out of loop if we've already matched |
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if ($comparision === 'any' && $matched) { |
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break; |
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} |
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|
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// no need to continue if this rule didn't match |
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if ($comparision === 'all' && ! $matched) { |
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break; |
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} |
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} |
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|
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// value of $matched at this point determines whether box should be loaded |
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$load_box = $matched; |
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|
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/** |
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* Filters whether a box should be loaded into the page HTML. |
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* |
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* The dynamic portion of the hook, `$box_id`, refers to the ID of the box. Return true if you want to output the box. |
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* |
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* @param boolean $load_box |
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*/ |
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$load_box = apply_filters('boxzilla_load_box_' . $box_id, $load_box); |
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|
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/** |
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* Filters whether a box should be loaded into the page HTML. |
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* |
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* @param boolean $load_box |
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* @param int $box_id |
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*/ |
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$load_box = apply_filters('boxzilla_load_box', $load_box, $box_id); |
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|
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// if matched, box should be loaded on this page |
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if ($load_box) { |
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$box_ids_to_load[] = $box_id; |
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} |
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} |
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|
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return $box_ids_to_load; |
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} |
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|
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/** |
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* Load plugin styles |
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*/ |
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public function load_assets() |
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{ |
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$pre_suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min'; |
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wp_enqueue_script('boxzilla', $this->plugin->url('/assets/js/script' . $pre_suffix . '.js'), array(), $this->plugin->version(), true); |
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|
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// create boxzilla_Global_Options object |
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$plugin_options = $this->options; |
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$boxes = $this->get_matched_boxes(); |
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|
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$data = array( |
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'testMode' => (bool) $plugin_options['test_mode'], |
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'boxes' => (array) array_map(function (Box $box) { |
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return $box->get_client_options(); |
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}, $boxes), |
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); |
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|
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wp_localize_script('boxzilla', 'boxzilla_options', $data); |
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|
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do_action('boxzilla_load_assets', $this); |
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} |
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|
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public function print_boxes_content() |
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{ |
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$boxes = $this->get_matched_boxes(); |
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if (empty($boxes)) { |
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return; |
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} |
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|
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echo '<div style="display: none;">'; |
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foreach ($boxes as $box) { |
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echo sprintf('<div id="boxzilla-box-%d-content">', $box->ID) . $box->get_content() . '</div>'; |
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} |
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echo '</div>'; |
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} |
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|
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/** |
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* Get an array of Box objects. These are the boxes that will be loaded for the current request. |
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* |
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* @return Box[] |
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*/ |
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public function get_matched_boxes() |
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{ |
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static $boxes; |
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|
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if (is_null($boxes)) { |
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if (count($this->box_ids_to_load) === 0) { |
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$boxes = array(); |
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return $boxes; |
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} |
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|
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// query Box posts |
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$posts = get_posts( |
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array( |
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'post_type' => 'boxzilla-box', |
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'post_status' => 'publish', |
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'post__in' => $this->box_ids_to_load, |
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'numberposts' => -1 |
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) |
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); |
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|
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// create `Box` instances out of \WP_Post instances |
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$boxes = array(); |
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foreach ($posts as $key => $post) { |
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// skip posts with no content |
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$post_content = trim($post->post_content); |
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if (empty($post_content)) { |
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continue; |
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} |
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|
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$boxes[ $key ] = new Box($post); |
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} |
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} |
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|
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return $boxes; |
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} |
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} |
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|
