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<?php
class BostonFoodTrucks {
private $food_truck_schedule_url = 'http://www.cityofboston.gov/business/mobile/schedule-app.asp?v=1&71';
private $food_truck_html = '';
private $dom = null;
private $finder = null;
private $class_company = 'com';
private $class_day_of_the_week = 'dow';
private $class_time_of_day = 'tod';
private $class_location = 'loc';
private $food_trucks_nodes = array(
'companies' => null,
'company_urls' => null,
'days_of_week' => null,
'times_of_day' => null,
'locations' => null,
);
public $food_truck_output = array(
'food_trucks' => array()
);
public $locations_downtown = array(
'Boston Common, Brewer Fountain by Tremont and Boylston Streets',
'Carousel',
'Chinatown, Boylston St near Washington St',
'City Hall Plaza, Fisher Park',
'Dudley Square at Dudley street',
'Financial District, Milk and Kilby Streets',
'Financial District, Pearl Street at Franklin',
'Greenway, Chinatown Park',
'Greenway, Dewey Square Park Plaza',
'Greenway, Dewey Square Park at Congress St',
'Greenway, Echelman Sculpture at Oliver St',
'Greenway, Fort Point Park',
'Greenway, Rings Fountain at Milk St',
'Greenway, Rowes Wharf Plaza',
'Hurley Building, New Chardon and Cambridge St',
'Innovation District, Seaport Blvd at Boston Wharf Rd'
);
public function __construct () {
$this->food_truck_html = file_get_contents($this->food_truck_schedule_url);
$this->dom = new DOMDocument;
$this->dom->loadHTML($this->food_truck_html);
$this->finder = new DomXPath($this->dom);
$this->food_truck_nodes['companies'] =
$this->finder->query('//td[@class="' . $this->class_company . '"]/a/text()');
$this->food_truck_nodes['company_urls'] =
$this->finder->query('//td[@class="' . $this->class_company . '"]/a/@href');
$this->food_truck_nodes['days_of_week'] =
$this->finder->query('//td[@class="' . $this->class_day_of_the_week . '"]/text()');
$this->food_truck_nodes['times_of_day'] =
$this->finder->query('//td[@class="' . $this->class_time_of_day . '"]/text()');
$this->food_truck_nodes['locations'] =
$this->finder->query('//td[@class="' . $this->class_location . '"]/text()');
}
public function schedule ($options = array()) {
$available_options = array(
'trucks' => isset($options['trucks']),
'days_of_week' => isset($options['days_of_week']),
'times_of_day' => isset($options['times_of_day']),
'locations' => isset($options['locations'])
);
$has_days = isset($options['days_of_week']);
$has_times = isset($options['times_of_day']);
$has_locations = isset($options['locations']);
// Copy set options into their own array
$set_options = array();
foreach ($available_options as $key => $value) {
if ($value) {
$set_options[$key] = $value;
}
}
// Go through all food trucks
for ($i = 0; $i < $this->food_truck_nodes['locations']->length; $i++) {
$matches = 0;
// Perform filters on this food truck
foreach ($set_options as $key => $value) {
if ($value and call_user_func_array(array($this, $key), array($i, $options[$key]))) {
$matches++;
}
}
// If all filters pass, add this truck to the list
if ($matches == sizeof($set_options)) {
$this->_add_food_truck($i);
}
}
return $this->food_truck_output;
}
// Filtering functions
private function filter ($list_name, $list_index, $array) {
return in_array($this->food_truck_nodes[$list_name]->item($list_index)->nodeValue, $array);
}
private function trucks ($list_index, $array) {
return $this->filter('trucks', $list_index, $array);
}
private function days_of_week ($list_index, $array) {
return $this->filter('days_of_week', $list_index, $array);
}
private function times_of_day ($list_index, $array) {
return $this->filter('times_of_day', $list_index, $array);
}
private function locations ($list_index, $array) {
return $this->filter('locations', $list_index, $array);
}
// Add food truck to the final list
private function _add_food_truck ($list_index) {
$this->food_truck_output['food_trucks'][] = array(
'company' => $this->food_truck_nodes['companies']->item($list_index)->nodeValue,
'company_url' => $this->food_truck_nodes['company_urls']->item($list_index)->nodeValue,
'day_of_week' => $this->food_truck_nodes['days_of_week']->item($list_index)->nodeValue,
'time_of_day' => $this->food_truck_nodes['times_of_day']->item($list_index)->nodeValue,
'location' => $this->food_truck_nodes['locations']->item($list_index)->nodeValue
);
}
// Show lunch trucks today
public function trucks_now () {
return $this->schedule(array(
'days_of_week' => array(date('l')),
'times_of_day' => array('Lunch')
));
}
}
|
