<?php 

/*
Plugin Name: Open Web Analytics
Plugin URI: http://www.openwebanalytics.com
Description: This plugin enables Wordpress blog owners to use the Open Web Analytics Framework.
Author: Peter Adams
Version: v1.3.0
Author URI: http://www.openwebanalytics.com
*/

//
// Open Web Analytics - An Open Source Web Analytics Framework
//
// Copyright 2008 Peter Adams. All rights reserved.
//
// Licensed under GPL v2.0 http://www.gnu.org/copyleft/gpl.html
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// $Id$
//

require_once('owa_env.php');

// Filter and Action hook assignments
add_action('template_redirect', 'owa_main');
add_action('wp_footer', 'owa_footer');
add_filter('the_permalink_rss', 'owa_post_link');
add_action('init', 'owa_handleSpecialActionRequest');
add_filter('bloginfo_url', 'add_feed_sid');
add_action('admin_menu', 'owa_dashboard_menu');
add_action('comment_post', 'owa_logComment');
add_action('transition_comment_status', 'owa_logCommentEdit');
add_action('admin_menu', 'owa_options_menu');
add_action('user_register', 'owa_userRegistrationActionTracker');
add_action('wp_login', 'owa_userLoginActionTracker');
add_action('profile_update', 'owa_userProfileUpdateActionTracker', 10,2);
add_action('password_reset', 'owa_userPasswordResetActionTracker');
add_action('trackback_post', 'owa_trackbackActionTracker');
add_action('add_attachment', 'owa_newAttachmentActionTracker');
add_action('edit_attachment', 'owa_editAttachmentActionTracker');
add_action('transition_post_status', 'owa_postActionTracker', 10, 3);
add_action('wpmu_new_blog', 'owa_newBlogActionTracker', 10, 5);
// Installation hook
register_activation_hook(__FILE__, 'owa_install');

/////////////////////////////////////////////////////////////////////////////////

/**
 * New Blog Action Tracker
 */
function owa_newBlogActionTracker($blog_id, $user_id, $domain, $path, $site_id) {

	$owa = owa_getInstance();
	$owa->trackAction('wordpress', 'Blog Created', $domain);
}

/**
 * Edit Post Action Tracker
 */
function owa_editPostActionTracker($post_id, $post) {

	$owa = owa_getInstance();
	$label = $post->post_title;
	$owa->trackAction('wordpress', $post->post_type.' edited', $label);
}

/**
 * Post Action Tracker
 */
function owa_postActionTracker($new_status, $old_status, $post) {
	
	// we don't want to track autosaves...
	if(wp_is_post_autosave($post)) {
		return;
	}
	
	if ($new_status === 'publish' && $old_status != 'publish') {
		$action_name = $post->post_type.' publish';
	} elseif ($new_status === $old_status) {
		$action_name = $post->post_type.' edit';
	}
	
	if ($action_name) {	
		$owa = owa_getInstance();
		owa_coreAPI::debug(sprintf("new: %s, old: %s, post: %s", $new_status, $old_status, print_r($post, true)));
		$label = $post->post_title;
		$owa->trackAction('wordpress', $action_name, $label);
	}
}

/**
 * New Attachment Action Tracker
 */
function owa_editAttachmentActionTracker($post_id) {

	$owa = owa_getInstance();
	$post = get_post($post_id);
	$label = $post->post_title;
	$owa->trackAction('wordpress', 'Attachment Edit', $label);
}

/**
 * New Attachment Action Tracker
 */
function owa_newAttachmentActionTracker($post_id) {

	$owa = owa_getInstance();
	$post = get_post($post_id);
	$label = $post->post_title;
	$owa->trackAction('wordpress', 'Attachment Created', $label);
}

/**
 * User Registration Action Tracker
 */
function owa_userRegistrationActionTracker($user_id) {
	
	$owa = owa_getInstance();
	$user = get_userdata($user_id);
	if (!empty($user->first_name) && !empty($user->last_name)) {
		$label = $user->first_name.' '.$user->last_name;	
	} else {
		$label = $user->display_name;
	}
	
	$owa->trackAction('wordpress', 'User Registration', $label);
}

/**
 * User Login Action Tracker
 */
function owa_userLoginActionTracker($user_id) {

	$owa = owa_getInstance();
	$label = $user_id;
	$owa->trackAction('wordpress', 'User Login', $label);
}

/**
 * Profile Update Action Tracker
 */
function owa_userProfileUpdateActionTracker($user_id, $old_user_data = '') {

	$owa = owa_getInstance();
	$user = get_userdata($user_id);
	if (!empty($user->first_name) && !empty($user->last_name)) {
		$label = $user->first_name.' '.$user->last_name;	
	} else {
		$label = $user->display_name;
	}
	
	$owa->trackAction('wordpress', 'User Profile Update', $label);
}

/**
 * Password Reset Action Tracker
 */
function owa_userPasswordResetActionTracker($user) {
	
	$owa = owa_getInstance();
	$label = $user->display_name;
	$owa->trackAction('wordpress', 'User Password Reset', $label);
}

/**
 * Trackback Action Tracker
 */
function owa_trackbackActionTracker($comment_id) {
	
	$owa = owa_getInstance();
	$label = $comment_id;
	$owa->trackAction('wordpress', 'Trackback', $label);
}




/**
 * Singleton Method
 *
 * Returns an instance of OWA
 *
 * @return $owa object
 */

function &owa_getInstance($params = array()) {
	
	static $owa;
	
	if(!empty($owa)):
		
		return $owa;
	else:
	
		require_once(OWA_BASE_CLASSES_DIR.'owa_wp.php');
		
		// Build the OWA wordpress specific config overrides array
		$owa_config = array();
		
		// report and link templates	
		$owa_config['report_wrapper'] = 'wrapper_wordpress.tpl';
		$owa_config['link_template'] = '%s&%s';
		// embedded urls
		$owa_config['main_url'] = '../wp-admin/index.php?page=owa';
		$owa_config['main_absolute_url'] = get_bloginfo('url').'/wp-admin/index.php?page=owa';
		$owa_config['action_url'] = get_bloginfo('url').'/index.php?owa_specialAction';
		$owa_config['api_url'] = get_bloginfo('url').'/index.php?owa_apiAction';
		// needed?
		$owa_config['log_url'] = get_bloginfo('url').'/wp-content/plugins/owa/log.php';
		$owa_config['site_id'] = md5(get_settings('siteurl'));
		// needed for some reason
		$owa_config['is_embedded'] = true;
		// this should be overridable by a user config value.
		$owa_config['delay_first_hit'] = true;
		
		// merge in passed params
		$config = array_merge($owa_config, $params);
		
		// create owa instance w/ config
		$owa = new owa_wp($config);
		$owa->setSiteId(md5(get_settings('siteurl')));
		
		// Access WP current user object to check permissions
		$current_user = owa_getCurrentWpUser();
      	     //print_r($current_user);
		// Set OWA's current user info and mark as authenticated so that
		// downstream controllers don't have to authenticate
		$cu =&owa_coreAPI::getCurrentUser();
		
		if (isset($current_user->user_login)) {
			$cu->setUserData('user_id', $current_user->user_login);
			owa_coreAPI::debug("Wordpress User_id: ".$current_user->user_login);
		}
		
		if (isset($current_user->user_email)) {	
			$cu->setUserData('email_address', $current_user->user_email);
		}
		
		if (isset($current_user->first_name)) {
			$cu->setUserData('real_name', $current_user->first_name.' '.$current_user->last_name);
			$cu->setRole(owa_translate_role($current_user->roles));
		}
		owa_coreAPI::debug("Wordpress User Role: ".print_r($current_user->roles, true));
		owa_coreAPI::debug("Wordpress Translated OWA User Role: ".$cu->getRole());
		$cu->setAuthStatus(true);
		//owa_coreAPI::debug("Wordpress  User Object: ".print_r($current_user, true));		
		return $owa;
		
	endif;
	
}

function owa_getCurrentWpUser() {

	// Access WP current user object to check permissions
	global $current_user;
    get_currentuserinfo();
    return $current_user;

}

// translates wordpress roles to owa roles
function owa_translate_role($roles) {
	
	if (!empty($roles)) {
	
		if (in_array('administrator', $roles)) {
			$owa_role = 'admin';
		} elseif (in_array('editor', $roles)) {
			$owa_role = 'viewer';
		} elseif (in_array('author', $roles)) {
			$owa_role = 'viewer';
		} elseif (in_array('contributor', $roles)) {
			$owa_role = 'viewer';
		} elseif (in_array('subscriber', $roles)) {
			$owa_role = 'everyone';
		} else {
			$owa_role = 'everyone';
		}
		
	} else {
		$owa_role = 'everyone';
	}
	
	return $owa_role;
}


function owa_handleSpecialActionRequest() {

	$owa = owa_getInstance();
	owa_coreAPI::debug("hello from WP special action handler");
	return $owa->handleSpecialActionRequest();
	
}

function owa_logComment($id, $comment_data = '') {

	if ( $comment_data === 'approved' || $comment_data === 1 ) {

		$owa = owa_getInstance();
		$label = '';
		$owa->trackAction('wordpress', 'comment', $label);
	}
}

function owa_logCommentEdit($new_status, $old_status, $comment) {
	
	if ($new_status === 'approved') {
		if (isset($comment->comment_author)) {
			$label = $comment->comment_author; 
		} else {
			$label = '';
		}
		
		$owa = owa_getInstance();
		$owa->trackAction('wordpress', 'comment', $label);
	}
}

/**
 * Prints helper page tags to the footers of templates.
 * 
 */
function owa_footer() {
	
	$owa = owa_getInstance();
	$owa->placeHelperPageTags();	
}	

/**
 * This is the main logging controller that is called on each request.
 * 
 */
function owa_main() {
	
	//global $user_level;
	
	$owa = owa_getInstance();
	
	owa_coreAPI::debug('wp main request method');
	$event = $owa->makeEvent();
	
	// Don't log if the page request is a preview - Wordpress 2.x or greater
	if (function_exists('is_preview')) {
		if (is_preview()) {
			$event->set('do_not_log',true);
		}
	}

	$event->setEventType('base.page_request');
	// Set the type of page
	$event->set('page_type', owa_get_page_type());
	
	//Check to see if this is a Feed Reeder
	if(is_feed()) {
		$event->setEventType('base.feed_request');
		$event->set('feed_format', $_GET['feed']);
		
	}
	
	//eliminate use of _GET by using OWA's request param method.
	if (array_key_exists($owa->getSetting('base', 'ns').$owa->getSetting('base', 'source_param'), $_GET)) {
		$event->set($owa->getSetting('base', 'source_param'), $_GET[$owa->getSetting('base', 'ns').$owa->getSetting('base', 'source_param')]);
	}
	
	$cu = &owa_coreAPI::getCurrentUser();
	
	// Track users by the email address of that they used when posting a comment
	//$app_params['user_email'] = $cu->getUserData('email_address'); 
	
	// Track users who have a named account
	//$app_params['user_name'] = $cu->getUserData('user_id');
	
	// Get Title of Page
	$event->set('page_title', owa_get_title($event->get('page_type')));
	
	// Create Site ID
	$event->set('site_id', $owa->createSiteId(get_settings('siteurl')));
	
	// Process the request by calling owa
	$owa->trackEvent($event);
}

/**
 * Determines the title of the page being requested
 *
 * @param string $page_type
 * @return string $title
 */
function owa_get_title($page_type) {

	if ($page_type == "Home"):
		$title = get_bloginfo('name');
	elseif ($page_type == "Search Results"):
		$title = "Search Results for \"".$_GET['s']."\"";	
	elseif ($page_type == "Page" || "Post"):
		$title = wp_title($sep = '', $display = 0);
	elseif ($page_type == "Author"):
		$title = wp_title($sep = '', $display = 0);
	elseif ($page_type == "Category"):
		$title = wp_title($sep = '', $display = 0);
	elseif ($page_type == "Month"):
		$title = wp_title($sep = '', $display = 0);
	elseif ($page_type == "Day"):
		$title = wp_title($sep = '', $display = 0);
	elseif ($page_type == "Year"):
		$title = wp_title($sep = '', $display = 0);
	elseif ($page_type == "Time"):
		$title = wp_title($sep = '', $display = 0);
	elseif ($page_type == "Feed"):
		$title = wp_title($sep = '', $display = 0);
	endif;	
	
	return $title;
}

/**
 * Determines the type of page being requested
 *
 * @return string $type
 */
function owa_get_page_type() {	
	
	if (is_home()):
		$type = "Home";
	elseif (is_attachment()):
		$type = "Attachment";
	elseif (is_page()):
		$type = "Page";
	// general page catch, should be after more specific post types	
	elseif (is_single()):
		$type = "Post";
	elseif (is_feed()):
		$type = "Feed";
	elseif (is_author()):
		$type = "Author";
	elseif (is_category()):
		$type = "Category";
	elseif (is_search()):
		$type = "Search Results";
	elseif (is_month()):
		$type = "Month";
	elseif (is_day()):
		$type = "Day";
	elseif (is_year()):
		$type = "Year";
	elseif (is_time()):
		$type = "Time";
	elseif (is_tag()):
		$type = "Tag";
	elseif (is_tax()):
		$type = "Taxonomy";
	// general archive catch, should be after specific archive types	
	elseif (is_archive()):
		$type = "Archive";
	endif;
	
	return $type;
}

/**
 * Wordpress filter function adds a GUID to the feed URL.
 *
 * @param array $binfo
 * @return string $newbinfo
 */
function add_feed_sid($binfo) {
	
	$owa = owa_getInstance();
	
	$test = strpos($binfo, "feed=");
	
	if ($test == true):
		$newbinfo = $owa->add_feed_tracking($binfo);
	
	else: 
		
		$newbinfo = $binfo;
		
	endif;
	
	return $newbinfo;

}

/**
 * Adds tracking source param to links in feeds
 *
 * @param string $link
 * @return string
 */
function owa_post_link($link) {

	$owa = owa_getInstance();

	return $owa->add_link_tracking($link);
		
}

/**
 * Schema and setting installation
 *
 */
function owa_install() {

	define('OWA_INSTALLING', true);
	
	$params = array();
	//$params['do_not_fetch_config_from_db'] = true;

	$owa = owa_getInstance($params);
	$owa->setSetting('base', 'cache_objects', false);
		
	$public_url =  get_bloginfo('url').'/wp-content/plugins/owa/';
	
	$install_params = array('site_id' => md5(get_settings('siteurl')), 
							'name' => get_bloginfo('name'),
							'domain' => get_settings('siteurl'), 
							'description' => get_bloginfo('description'),
							'action' => 'base.installEmbedded',
							'db_type' => 'mysql',
							'db_name' => DB_NAME,
							'db_host' => DB_HOST,
							'db_user' => DB_USER,
							'db_password' => DB_PASSWORD,
							'public_url' =>  $public_url
							);
	
	$owa->handleRequest($install_params);
}

/**
 * Adds Analytics sub tab to admin dashboard screens.
 *
 */
function owa_dashboard_menu() {

	if (function_exists('add_submenu_page')):
		add_submenu_page('index.php', 'OWA Dashboard', 'Analytics', 1, dirname(__FILE__), 'owa_pageController');
    endif;
    
    return;

}

/**
 * Produces the analytics dashboard
 * 
 */
function owa_dashboard_report() {
	
	$owa = owa_getInstance();
	
	$params = array();
	$params['do'] = 'base.reportDashboard';
	echo $owa->handleRequest($params);
	
	return;
	
}

function owa_pageController() {

	$owa = owa_getInstance();
	
	$do = owa_coreAPI::getRequestParam('do');
	
	if (empty($do)) {
		$params = array();
		$params['do'] = 'base.reportDashboard';	
	}
	
	echo $owa->handleRequest($params);

}

/**
 * Adds Options page to admin interface
 *
 */
function owa_options_menu() {
	
	if (function_exists('add_options_page')):
		add_options_page('Options', 'OWA', 8, basename(__FILE__), 'owa_options_page');
	endif;
    
    return;
}

/**
 * Generates Options Management Page
 *
 */
function owa_options_page() {
	
	$owa = owa_getInstance();
	
	$params = array();
	$params['view'] = 'base.options';
	$params['subview'] = 'base.optionsGeneral';
	echo $owa->handleRequest($params);
	
	return;
}

/**
 * Parses string to get the major and minor version of the 
 * instance of wordpress that is running
 *
 * @param string $version
 * @return array
 */
function owa_parse_version($version) {
	
	$version_array = explode(".", $version);
   
   return $version_array;
	
}

?>