data.month_calendar.php

<?php

	require_once(TOOLKIT . '/class.datasource.php');

	Class datasourcemonth_calendar extends Datasource {

		public $dsParamROOTELEMENT = 'month-calendar';
		public $dsParamORDER = 'asc';
		public $dsParamREDIRECTONEMPTY = 'no';
		
		public function __construct(&$parent, $env=NULL, $process_params=true){
			parent::__construct($parent, $env, $process_params);
		}

		public function about(){
			return array(
				'name' => 'Month Calendar',
				'author' => array(
					'name'			=> 'Deux Huit Huit',
					'website'		=> 'https://deuxhuithuit.com/',
					'email'			=> 'open-source (at) deuxhuithuit.com'
				),
				'version' => '1.2',
				'release-date' => '2015-09-17'
			);
		}

		public function getSource(){
			return 'calendar';
		}

		public function allowEditorToParse(){
			return false;
		}

		public function grab(&$param_pool=NULL){
			$result = new XMLElement($this->dsParamROOTELEMENT);

			$env_params = Symphony::Engine()->Page()->Env();
			$startDateValue = '2016-01-01';
			// only get year-month
			$startDateValue = date_format(date_create($startDateValue), 'Y-m-01');
			
			try {
				$this->__generateXML($result, $startDateValue);

			} catch(FrontendPageNotFoundException $e){
				// Work around. This ensures the 404 page is displayed and
				// is not picked up by the default catch() statement below
				FrontendPageNotFoundExceptionHandler::render($e);

			} catch(Exception $e){
				$result->appendChild(new XMLElement('error', $e->getMessage()));
				return $result;
			}

			if($this->_force_empty_result) $result = $this->emptyXMLSet();

			return $result;

		}

		protected function __generateXML(&$result, &$startDateValue) {
			
			$now = date_create();
			$curEntries = array();
			
			$now_month = date_format($now, 'm');
			$now_year = date_format($now, 'Y');
			$env_params = Symphony::Engine()->Page()->Env();
			
			$now_month_date = date_create("{$now_year}-{$now_month}-01");
			
			$selectedDate = null;
			
			for($c = 0; $c < 12; $c++) {
				$startDate = date('Y-m-d', strtotime($startDateValue. ' +' . $c .' month'));
				$endDate = date('Y-m-d', strtotime($startDateValue. ' +' . ($c + 1) .' month'));
				
				$month = new XMLElement('item');
				$month->setAttribute('date', $startDate);
				
				if ($now_month_date > date_create($startDate)) {
					$month->setAttribute('is-past', 'Yes');
				}

				$result->appendChild($month);
			}
		}


	}