<?php

/**
 * Copyright 2014 Openstack Foundation
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * 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.
 **/

/**
 * Defines the JobsHolder page type
 */
class PresentationCategoryPage extends Page
{
	private static $db = array(
		'StillUploading' => 'Boolean'
	);

	private static $has_one = array();

	private static $has_many = array(
		'Presentations'  => 'Presentation',
		'FeaturedVideos' => 'FeaturedVideo'
	);

	private static $allowed_children = array('PresentationCategoryPage');

	/** static $icon = "icon/path"; */

	function getCMSFields()
	{
		$fields = parent::getCMSFields();
		$presentationsTable = new GridField('Presentations', 'Presentations', $this->Presentations(),GridFieldConfig_RecordEditor::create(10));

		$fields->addFieldToTab('Root.Presentations', $presentationsTable);

		// Summit Videos
		$VideosUploadingField = new OptionSetField('StillUploading', 'Are videos still being uploaded?', array(
			'1' => 'Yes - A message will be displayed.',
			'0' => 'No'
		));

		$fields->addFieldToTab("Root.Main", $VideosUploadingField, 'Content');

		$featuredVideos = new GridField('FeaturedVideos', 'FeaturedVideos', $this->FeaturedVideos(),GridFieldConfig_RecordEditor::create(10));
		$fields->addFieldToTab('Root.FeaturedVideos', $featuredVideos);


		return $fields;
	}

}

class PresentationCategoryPage_Controller extends Page_Controller
{


	static $allowed_actions = array(
		'presentation',
		'featured',
		'updateURLS' => 'admin'
	);

	public function Presentations()
	{
		$sessions = dataobject::get('Presentation', '`YouTubeID` IS NOT NULL AND PresentationCategoryPageID = ' . $this->ID, 'StartTime DESC');
		return $sessions;
	}

	function init()
	{

		parent::init();
		if (isset($_GET['day'])) {
			Session::set('Day', $_GET['day']);
		} else {
			Session::set('Day', 1);
		}

		if ($this->getRequest()->getVar("OtherID") != "presentation") Session::set('Autoplay', TRUE);
	}

	//Show the Presentation detail page using the PresentationCategoryPage_presentation.ss template
	function presentation()
	{
		if ($Presentation = $this->getPresentationByURLSegment()) {
			$Data = array(
				'Presentation' => $Presentation
			);

			$this->Title = $Presentation->Name;
			$this->Autoplay = Session::get('Autoplay');

			// Clear autoplay so it only happens when you come directly from videos index
			Session::set('Autoplay', FALSE);

			//return our $Data to use on the page
			return $this->Customise($Data);
		} else {
			//Presentation not found
			return $this->httpError(404, 'Sorry that presentation could not be found');
		}
	}

	//Show the Presentation detail page using the PresentationCategoryPage_presentation.ss template
	function featured()
	{
		if ($Presentation = $this->getPresentationByURLSegment(TRUE)) {
			$Data = array(
				'Presentation' => $Presentation
			);

			$this->Title = $Presentation->Name;
			$this->Autoplay = Session::get('Autoplay');

			// Clear autoplay so it only happens when you come directly from videos index
			Session::set('Autoplay', FALSE);

			//return our $Data to use on the page
			return $this->Customise($Data);
		} else {
			//Presentation not found
			return $this->httpError(404, 'Sorry that presentation could not be found');
		}
	}

	function PresentationDayID($PresentationDay)
	{
		return trim($PresentationDay, ' ');
	}

	function LatestPresentation()
	{
		if ($this->Presentations()) return $this->Presentations()->first();
	}


	// Check to see if the page is being accessed in Chinese
	// We use this in the templates to tell Chinese visitors how to obtain the videos on a non-youtube source
	function ChineseLanguage()
	{
		$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
		if ($lang == "zh") {
			return TRUE;
		} else {
			return FALSE;
		}
	}


	//Get the current Presentation from the URL, if any
	public function getPresentationByURLSegment($featured = FALSE)
	{

		$Params = $this->getURLParams();
		$Segment = convert::raw2sql($Params['ID']);

		if ($featured == FALSE && $Params['ID'] && $Presentation = DataObject::get_one('Presentation', "`URLSegment` = '" . $Segment . "' AND `PresentationCategoryPageID` = " . $this->ID)) {
			return $Presentation;
		} elseif ($featured == TRUE && $Params['ID'] && $FeaturedVideo = DataObject::get_one('FeaturedVideo', "`URLSegment` = '" . $Segment . "'")) {
			return $FeaturedVideo;
		}
	}


	function currentDay()
	{
		$day = Session::get('Day');
		Session::clear('Day');
		// Casting the value as int prevents possible XSS attack
		return (int)$day;
	}

	function updateURLS()
	{
		$presentations = dataobject::get('Presentation', 'PresentationCategoryPageID = ' . $this->ID, 'StartTime ASC');
		foreach ($presentations as $presentation) {
			if ($presentation->URLSegment == NULL) {
				$presentation->write();
			}
		}
		echo "Presentation URLS updated.";
	}

}