functions.php

<?php
#let's make sure that the bootstrap font-awesome system is included
function include_font_awesome() {
	wp_register_style('font-awesome.css', '//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.min.css');
	wp_enqueue_style('font-awesome.css');
}
add_action('wp_enqueue_scripts','include_font_awesome');

# let's include the local javascript file
function include_indexjs() {
	wp_register_script('indexjs',get_stylesheet_directory_uri().'/js/index.min.js', array('jquery'), false, true);

	wp_enqueue_script('indexjs');
}
add_action('wp_enqueue_scripts','include_indexjs');

# let's make sure to include bootstrap itself.
function include_bootstrap() {
  wp_register_script('bootstrapjs',get_stylesheet_directory_uri().'/js/bootstrap.min.js', array('jquery'),false,true);
  wp_enqueue_script('bootstrapjs');
}
add_action('wp_enqueue_scripts','include_bootstrap');

#let's get the header image working
$args = array(
	'width' => 300,
	'height' => 200,
	'default-image' => get_template_directory_uri() . '/images/header.jpg',
	'uploads' => true,
);
add_theme_support('custom-header', $args);

#let's get the footer image working
function IFMA_customize_register( $wp_customize) {
  #add a new setting
  $wp_customize->add_setting('footer_image_setting',array('default' => get_template_directory_uri() . '/images/footer.png', 'type'=> 'option'));
  #add a new section
  $wp_customize->add_section('footer_image_section',array('title' => __('Footer Image','IFMA-Courses')));
  #add a control so we can change stuff
  $wp_customize->add_control(new WP_Customize_Image_Control( $wp_customize, 'footer_image_control',array(
    'label' => __('Footer Image', 'IFMA-Courses'),
    'section' => 'footer_image_section',
    'settings' => 'footer_image_setting'
  )));
   #
}
add_action('customize_register','IFMA_customize_register');

# let's get the title tags working

add_filter('wp_title','IFMA_homepage_title');
function IFMA_homepage_title($title) {
  if (empty ($title) && (is_home() || is_front_page())){
    return __(get_bloginfo('name'), 'theme_domain') . ' | ' . get_bloginfo('description');
  }
  return $title;
}

# let's register all of the menus

function register_menus() {
  register_nav_menus(array(
    'utility-menu' => __('Utility'),
    'navigation-menu' => __('Navigation') ) );
}
add_action('init', 'register_menus');

function micro_nav_widget_init() {
  register_sidebar(array(
    'name' => 'MicroNav',
    'id' => 'micro_nav',
    'before_widget' => '<ul>',
    'after_widget' => '</ul>',
    'before_title' => '<li>',
    'after_title' => '</li>',
  ) );
}
add_action('widgets_init', 'micro_nav_widget_init');

# let's register widget areas
function footer_widget_init() {
  register_sidebars( 2, array(
    'name' => 'Footer %d',
    'id' => 'footer',
    'before_widget' => '<div>',
    'after_widget' => '</div>',
    'before_title' => '<h2 class="rounded">',
    'after_title' => '</h2>',
  ) );
}
add_action('widgets_init', 'footer_widget_init');

function sidebar_widget_init() {
	register_sidebar( array(
		'name' => 'Sidebar',
		'id' => 'sidebar',
		'before_widget' => '<div>',
		'after_widget' => '</div>',
		'before_title' => '<h2 class="rounded">',
		'after_title' => '</h2>',
	));
}
add_action('widgets_init', 'sidebar_widget_init');


# let's modify the admin menu

add_action('admin_menu','remove_default_post_type');

function remove_default_post_type() {
  if (current_user_can('manage_options') === false) {
  remove_menu_page('edit.php');
  remove_menu_page('edit.php?post_type=page');
  remove_menu_page('edit-comments.php');
  remove_menu_page('themes.php');
  remove_menu_page('plugins.php');
  remove_menu_page('tools.php');
  remove_menu_page('options-general.php');
  remove_menu_page('users.php');
  }

}

add_action('wp_before_admin_bar_render', 'modify_admin_bar');

function modify_admin_bar(){
  if (current_user_can('manage_options') === false) {
  global $wp_admin_bar;
    $wp_admin_bar->remove_menu('new-post');
  $wp_admin_bar->remove_menu('new-page');
  }

}


# a helper function
function walk_delivery_method($value,$key) {
                if ($key == 0) {
                    echo $value;
                } else {
                    echo ", ".$value;
                }
}

// this function comes from http://www.codecodex.com/wiki/Calculate_Distance_Between_Two_Points_on_a_Globe#PHP
function getDistance($latitude1, $longitude1, $latitude2, $longitude2) {
    $earth_radius = 6371;

    $dLat = deg2rad($latitude2 - $latitude1);
    $dLon = deg2rad($longitude2 - $longitude1);

    $a = sin($dLat/2) * sin($dLat/2) + cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * sin($dLon/2) * sin($dLon/2);
    $c = 2 * asin(sqrt($a));
    $d = $earth_radius * $c;

    return $d;
}


#Let's add some search functionality
#
# first make sure that the query vars for the filters  are available to relevanssi
add_filter('query_vars', 'relevanssi_qvs');

function relevanssi_qvs($qv) {
	array_push($qv, 'start_date');
	array_push($qv, 'ifma_credential');
	array_push($qv, 'online');
	array_push($qv, 'on-site');
	array_push($qv, 'online-scheduled');
	array_push($qv, 'self-study');
	array_push($qv, 'accredited');
	array_push($qv, 'classroom');
	array_push($qv, 'provided_by');
	array_push($qv, 'college_accredited');
	array_push($qv, 'ceu');
	array_push($qv, 'meta_key');
	return $qv;

}

#second, make sure that relevanssi fires if a filter is present but the search term is empty
#
#currently only tests if ifma_credential or start_date is present

add_filter('relevanssi_search_ok', 'search_trigger');

function search_trigger($search_ok){
	global $wp_query;

	if (!empty($wp_query->query_vars['ifma_credential']) || !empty($wp_query->query_vars['start_date'])){
		$search_ok = true;
	}
	return $search_ok;
}

#now handle the relevanssi search, filtering if necessary
#

add_filter('relevanssi_hits_filter', 'filter_courses');

function filter_courses($hits) {
	global $wp_query;

	// just make sure that we have some results to work with:
	if ($hits[0] == null) {
    	// no search hits, so return all
    	$args = array( 'post_type' => 'course', 'posts_per_page' => -1);

		if (isset($_GET['orderby']) && $_GET['orderby'] == "title"){
			$args["orderby"] = "title";
			$args['order'] = $_GET['order'];
		}

    	$hits[0] = get_posts($args);
	}
		// we have to sort the custom fields here.

	if (isset($wp_query->query_vars['meta_key']) && $wp_query->query_vars['meta_key'] == 'start_date'){
		$dateArray = array();
		$returnArray = array();

		foreach ($hits[0] as $hit) {
			$dateArray[$hit->ID] = get_field('start_date',$hit->ID);
		}

		if ($_GET['order'] == "ASC") {
			arsort($dateArray);
		} else {
			asort($dateArray);
		}

		foreach($dateArray as $ID => $date) {
			foreach($hits[0] as $hit) {
				if ($hit->ID == $ID){
					$returnArray[] = $hit;
				}
			}
		}

		$hits[0] = $returnArray;
	}

	 if (isset($wp_query->query_vars['meta_key']) && $wp_query->query_vars['meta_key'] == 'map_location'){
	//this one requires that we get the location information of the user, calculate the distance, and then sort by distance
		$_SERVER['REMOTE_ADDR'] = "12.215.42.19";
		$user_location = json_decode(shell_exec('curl "http://api.hostip.info/get_json.php?position=true&ip='.strval($_SERVER['REMOTE_ADDR']).'"'));
		$user_lng = $user_location->lng;
		$user_lat = $user_location->lat;
		//now that we have the user location, let's calculate distance
		$mapArray = array();
		$returnArray = array();

		foreach ($hits[0] as $hit) {
			//get the latitude and longitude for each hit
			$location = get_field('map_location',$hit->ID);
			$address = get_field('map_location',$location[0]->ID);
			$distance = getDistance($user_lat,$user_lng,$address['lat'],$address['lng']);
			$mapArray[$hit->ID] = $distance;
		}

		if ($_GET['order'] == "ASC") {
			arsort($mapArray);
		} else {
			asort($mapArray);
		}

		foreach($mapArray as $ID => $distance) {
			foreach($hits[0] as $hit) {
				if ($hit->ID == $ID){
					$returnArray[] = $hit;
				}
			}
		}
		$hits[0] = $returnArray;
	}
   // now filter the results
   	$results = array();
		foreach ($hits[0] as $hit) {
			//start filtering by start date and if no date is specified use current date.

			if (isset($wp_query->query_vars['start_date']) && get_field('start_date',$hit->ID) != null) {
                $start_date = implode(" ",$wp_query->query_vars['start_date']);

				if (date(Ymd,strtotime($start_date)) > date(Ymd,strtotime(strval(get_field('end_date',$hit->ID))))) {
					continue;
                }
			} elseif (isset($wp_query->query_vars['start_date']) != true && get_field('start_date',$hit->ID) != null){
				if (date(Ymd,strtoTime('now')) > date(Ymd,strtotime(strval(get_field('end_date',$hit->ID))))) {
					continue;
				}
			}

			//var_dump(get_fields($hit));
			//check that the result matches the correct credential
			if (isset($wp_query->query_vars['ifma_credential'])) {
				if ($wp_query->query_vars['ifma_credential']==='fmp' && !in_category('fmp',$hit)) {
					continue;
				}
				elseif ($wp_query->query_vars['ifma_credential']==='sfp'&& !in_category('sfp',$hit)) {
					continue;
				}
				elseif ($wp_query->query_vars['ifma_credential']==='cfm' && !in_category('cfm',$hit)) {
					continue;
				}
			}

			// check IFMA accreditation
			if (isset($wp_query->query_vars['accredited']) && !get_field('accredited',$hit->ID)) {
				continue;
			}

			// check College accreditation
			if (isset($wp_query->query_vars['college_accredited']) && !get_field('college_accredited',$hit->ID)) {
				continue;
			}

			// check CEU
			if (isset($wp_query->query_vars['ceu']) && !get_field('ceu',$hit->ID)) {
				continue;
			}

			// remove those without the specified delivery method
			if (is_array(get_field('delivery_method',$hit->ID))) {
			$suspect = false;
            if (isset($wp_query->query_vars['online']) && !in_array('online', get_field('delivery_method',$hit->ID))){
                $suspect = true;
            } if (isset($wp_query->query_vars['on-site']) && !in_array('on-site', get_field('delivery_method',$hit->ID))) {
                $suspect = true;
            } if (isset($wp_query->query_vars['online-scheduled']) && !in_array('online-scheduled',get_field('delivery_method',$hit->ID))) {
                $suspect = true;
            } if (isset($wp_query->query_vars['self-study']) && !in_array('self-study',get_field('delivery_method',$hit->ID))) {
                $suspect = true;
			} if (isset($wp_query->query_vars['classroom']) && !in_array('classroom',get_field('delivery_method',$hit->ID))) {
				$suspect = true;
			}

            if (isset($wp_query->query_vars['online']) && in_array('online', get_field('delivery_method',$hit->ID))){
                $suspect = false;
            } if (isset($wp_query->query_vars['on-site']) && in_array('on-site', get_field('delivery_method',$hit->ID))) {
                $suspect = false;
            } if (isset($wp_query->query_vars['online-scheduled']) && in_array('online-scheduled',get_field('delivery_method',$hit->ID))) {
                $suspect = false;
            } if (isset($wp_query->query_vars['self-study']) && in_array('self-study',get_field('delivery_method',$hit->ID))) {
                $suspect = false;
			} if (isset($wp_query->query_vars['classroom']) && in_array('classroom',get_field('delivery_method',$hit->ID))) {
				$suspect = false;
			}

			// since hit fell through everything, we can assume it's a good variable
			if ($suspect == false){
            	$results[]= $hit;
            }

		} else{
		//doesn't have a specified delivery method, go ahead and return it.
		$results[]= $hit;
		}
	}
	$hits[0] = $results;
	return $hits;
}

?>