/wp-content/plugins/wysija-newsletters/helpers/wp_tools.php

<?php
defined('WYSIJA') or die('Restricted access');
class WYSIJA_help_wp_tools extends WYSIJA_object{

	function WYSIJA_help_wp_tools(){

	}

	/**
	 * add wysija's default capabilities to the admin and super admin roles
	 */
	function set_default_rolecaps(){
		//add role capabilities
		//get the "administrator" role object
		$rolesadmin=array('administrator','super_admin');

		foreach($rolesadmin as $roladm){
			$role = get_role($roladm);
			if(!$role) continue;
			//add wysija's capabilities to it so that other widgets can reuse it
			$arr=array('wysija_newsletters','wysija_subscribers','wysija_config','wysija_theme_tab','wysija_style_tab', 'wysija_stats_dashboard');

			foreach($arr as $arrkey){
				if(!$role->has_cap($arrkey)) $role->add_cap( $arrkey );
			}
		}
	}

	/**
	 * get an array of WordPress roles with a numbered index
	 * @global type $wp_roles
	 * @return array
	 */
	function wp_get_roles() {
		//Careful WordPress global
		global $wp_roles;
		$all_roles = $wp_roles->roles;
		$editable_roles = apply_filters('editable_roles', $all_roles);

		$rolearray=array();
		$sum=6;
		foreach($editable_roles as $keyrol => $roledetails){
			switch($keyrol){
				case 'super_admin':
					$index=1;
					break;
				case 'administrator':
					$index=2;
					break;
				case 'editor':
					$index=3;
					break;
				case 'author':
					$index=4;
					break;
				case 'contributor':
					$index=5;
					break;
				case 'subscriber':
					$index=6;
					break;
				default:
					$sum++;
					$index=$sum;
			}
			$rolearray[$index]=array('key'=>$keyrol,'name'=>$roledetails['name']);
		}
		ksort($rolearray);
		return $rolearray;
	}

	/**
	 * get an array of WordPress roles with a special capability of that role as index
	 * @global type $wp_roles
	 * @return array
	 */
	function wp_get_editable_roles() {
		//Careful WordPress global
		global $wp_roles;

		$all_roles = $wp_roles->roles;
		$editable_roles = apply_filters('editable_roles', $all_roles);

		$possible_values=array();
		foreach ( $all_roles as $role => $details ) {
			$name = translate_user_role($details['name'] );
			switch($role){
				case 'administrator':
					$keyrole='switch_themes';
					break;
				case 'editor':
					$keyrole='moderate_comments';
					break;
				case 'author':
					$keyrole='upload_files';
					break;
				case 'contributor':
					$keyrole='edit_posts';
					break;
				case 'subscriber':
					$keyrole='read';
					break;
				default:
					$keyrole=$role;
			}
			$possible_values[$keyrole]=$name;
			//$possible_values[key($details['capabilities'])]=$name;
		}

		return $possible_values;
	}

	/**
	 * get roles by name ? Not so sure why use that function
	 * @global type $wp_roles
	 * @return array
	 */
	function wp_get_all_roles() {
		//Careful WordPress global
		global $wp_roles;
		$all_roles = $wp_roles->get_names();
		return $all_roles;
	}

	/**
	 * check whether there is a caching plugin active on this site, we were using that function at some point, it can be useful
	 * @global type $cache_enabled
	 * @global type $super_cache_enabled
	 * @return boolean
	 */
	function is_caching_active(){
		$checkPlugins=array(
			'wp-super-cache/wp-cache.php' ,
			'w3-total-cache/w3-total-cache.php',
			'quick-cache/quick-cache.php',
			'hyper-cache/plugin.php'
			);

		foreach($checkPlugins as $pluginFileName){
			if(WYSIJA::is_plugin_active($pluginFileName)){
				switch($pluginFileName){
					case 'wp-super-cache/wp-cache.php':
						global $cache_enabled, $super_cache_enabled;
						if(!(WP_CACHE && $cache_enabled && $super_cache_enabled))   continue(2);
						break;
					case 'w3-total-cache/w3-total-cache.php':
						$config = & w3_instance("W3_Config");
						if(!(WP_CACHE && $config->get_boolean("pgcache.enabled")))   continue(2);

						break;
					case 'quick-cache/quick-cache.php':
						if(!(WP_CACHE && $GLOBALS["WS_PLUGIN__"]["qcache"]["o"]["enabled"]))   continue(2);
						break;
					case 'hyper-cache/plugin.php':
						if(!(WP_CACHE))   continue(2);
						break;
					default:
						continue(2);
				}
				return true;
			}
		}
		return false;
	}

	/**
	 * extends the get_permalink of WordPress since at the beginning we had a lot of problems with people who didn't have pretty urls activated etc..
	 * @param int $pageid
	 * @param array $params pass an array of parameters to the url
	 * @param boolean $simple leading to the home not sure in which case we need that again
	 * @return string
	 */
	function get_permalink($pageid,$params=array(),$simple=false){
		$post = get_post($pageid);

		$url=get_permalink($post);

		if(!$url){
			//we need to recreate the subscription page
			$values=array();
			$helperInstall=WYSIJA::get('install','helper');
			$helperInstall->createPage($values);

			$modelConf=WYSIJA::get('config','model');
			$modelConf->save($values);
			$post = get_post($values['confirm_email_link']);
			$url=get_permalink($post);
		}

		$paramsquery=parse_url($url);

		if($params!==false) $params[$post->post_type]=$post->post_name;
		//make a simple url leading to the home
		if($simple){
			$url=site_url();
			// make sure we have a trailing slash at the end
			if($url{strlen($url) - 1} !== '/') $url .= '/';
		}

		if(isset($paramsquery['query'])){
			$myparams=explode('&',$paramsquery['query']);
			//get the param from the url obtain in permalink and transfer it to our url
			foreach($myparams as $paramvalu){
				$splitkeyval=explode('=',$paramvalu);
				$params[$splitkeyval[0]]=$splitkeyval[1];
			}
		}

		// make sure we include the port if it's specified
		if(isset($paramsquery['port']) && strlen(trim($paramsquery['port'])) > 0) {
			$port = ':'.(int)$paramsquery['port'];
		} else {
			$port = '';
		}

		// build url
		$url = sprintf('%s://%s%s%s', $paramsquery['scheme'], $paramsquery['host'], $port, $paramsquery['path']);

		if($params) {
			if(strpos($url, '?') !== false) $charStart='&';
			else $charStart='?';
			$url.=$charStart;
			$paramsinline=array();
			foreach($params as $k => $v){
				if(is_array($v))    $v = http_build_query(array($k => $v));
				$paramsinline[]=$k.'='.$v;
			}
			$url.=implode('&',$paramsinline);
		}

		// Transform relative URLs in Absolute URLs (Protect from external URL transforming plugins)
		$parsed_url = parse_url($url);
		if (empty($parsed_url['scheme'])) {
			$url = get_bloginfo('url') . $url;
		}

		return $url;
	}

	/**
	 * return a list of post types
	 * @return mixed
	 */
	function get_post_types($return_type = 'objects') {
		$args=array(
		  'public'   => true,
		  '_builtin' => false,
		  'show_in_menu'=>true,
		  'show_ui'=>true,
		);
		return get_post_types($args, $return_type);
	}

	/**
	 * return a list of post types
	 * @return mixed
	 */
	function get_post_statuses(){
		return array_merge(get_post_statuses(), array('future'=>__('Scheduled',WYSIJA)));
	}

	/**
	 * get a multidimensionnal array that returns the categories per CPT
	 */
	function get_categories() {

		// For now we wont need the post types as we only "post"
		$post_types = get_post_types( array(), 'names' );

		// Grab all taxonomies
		$taxonomies = get_object_taxonomies( $post_types, 'object' );

		// Get all terms from the taxonomies
		$terms = get_terms(
			array_keys( $taxonomies ),
			array(
				'order_by' => 'name',
				'show_count' => false,
				'hide_empty' => false,
			)
		);

		// backwards compatibility later lets use `term_id`
		foreach ( $terms as $key => $term ){
			$term->id    = $term->term_id;
			$terms[$key] = (array) $term;
		}

		// Create a response with the needed structure
		$response = array();

		// If the Post Type has categories associated it will have the terms
		foreach ( $post_types as $post_type ){
			foreach( $terms as $term ) {
				if ( ! in_array( $post_type, $taxonomies[ $term['taxonomy'] ]->object_type ) ){
					continue;
				}

				$term['name'] = esc_attr( $taxonomies[ $term['taxonomy'] ]->labels->singular_name . ": " . $term['name'] );

				$response[ $post_type ][] = $term;
			}

			if ( isset( $response[ $post_type ] ) && is_array( $response[ $post_type ] ) ) {
				usort( $response[ $post_type ], array( $this, 'sort_by_name' ) );
			}
		}

		return $response;
	}

	function get_post_category_ids( $post = null ) {
		if ( ! is_object( $post ) || ! is_a( $post, 'WP_Post' ) ) {
			return array();
		}

		return wp_get_post_terms( $post->ID, get_object_taxonomies( $post->post_type ), array( 'fields' => 'ids' ) );
	}

	function get_post_categories( $post = null ) {
		if ( ! is_array( $post ) ) {
			return array();
		}

		return wp_get_post_terms( $post['ID'], get_object_taxonomies( $post['post_type'] ), array( 'fields' => 'names' ) );
	}
}