<?php

/**
 * Contao Open Source CMS
 *
 * Copyright (c) 2005-2016 Leo Feyer
 *
 * @license LGPL-3.0+
 */


/**
 * Table tl_calendar
 */
$GLOBALS['TL_DCA']['tl_calendar'] = array
(

	// Config
	'config' => array
	(
		'dataContainer'               => 'Table',
		'ctable'                      => array('tl_calendar_events'),
		'switchToEdit'                => true,
		'enableVersioning'            => true,
		'onload_callback' => array
		(
			array('tl_calendar', 'checkPermission'),
			array('tl_calendar', 'generateFeed')
		),
		'onsubmit_callback' => array
		(
			array('tl_calendar', 'scheduleUpdate')
		),
		'sql' => array
		(
			'keys' => array
			(
				'id' => 'primary'
			)
		)
	),

	// List
	'list' => array
	(
		'sorting' => array
		(
			'mode'                    => 1,
			'fields'                  => array('title'),
			'flag'                    => 1,
			'panelLayout'             => 'filter;search,limit'
		),
		'label' => array
		(
			'fields'                  => array('title'),
			'format'                  => '%s'
		),
		'global_operations' => array
		(
			'feeds' => array
			(
				'label'               => &$GLOBALS['TL_LANG']['tl_calendar']['feeds'],
				'href'                => 'table=tl_calendar_feed',
				'class'               => 'header_rss',
				'attributes'          => 'onclick="Backend.getScrollOffset()"',
				'button_callback'     => array('tl_calendar', 'manageFeeds')
			),
			'all' => array
			(
				'label'               => &$GLOBALS['TL_LANG']['MSC']['all'],
				'href'                => 'act=select',
				'class'               => 'header_edit_all',
				'attributes'          => 'onclick="Backend.getScrollOffset()" accesskey="e"'
			)
		),
		'operations' => array
		(
			'edit' => array
			(
				'label'               => &$GLOBALS['TL_LANG']['tl_calendar']['edit'],
				'href'                => 'table=tl_calendar_events',
				'icon'                => 'edit.gif'
			),
			'editheader' => array
			(
				'label'               => &$GLOBALS['TL_LANG']['tl_calendar']['editheader'],
				'href'                => 'act=edit',
				'icon'                => 'header.gif',
				'button_callback'     => array('tl_calendar', 'editHeader')
			),
			'copy' => array
			(
				'label'               => &$GLOBALS['TL_LANG']['tl_calendar']['copy'],
				'href'                => 'act=copy',
				'icon'                => 'copy.gif',
				'button_callback'     => array('tl_calendar', 'copyCalendar')
			),
			'delete' => array
			(
				'label'               => &$GLOBALS['TL_LANG']['tl_calendar']['delete'],
				'href'                => 'act=delete',
				'icon'                => 'delete.gif',
				'attributes'          => 'onclick="if(!confirm(\'' . $GLOBALS['TL_LANG']['MSC']['deleteConfirm'] . '\'))return false;Backend.getScrollOffset()"',
				'button_callback'     => array('tl_calendar', 'deleteCalendar')
			),
			'show' => array
			(
				'label'               => &$GLOBALS['TL_LANG']['tl_calendar']['show'],
				'href'                => 'act=show',
				'icon'                => 'show.gif'
			)
		)
	),

	// Palettes
	'palettes' => array
	(
		'__selector__'                => array('protected', 'allowComments'),
		'default'                     => '{title_legend},title,jumpTo;{protected_legend:hide},protected;{comments_legend:hide},allowComments'
	),

	// Subpalettes
	'subpalettes' => array
	(
		'protected'                   => 'groups',
		'allowComments'               => 'notify,sortOrder,perPage,moderate,bbcode,requireLogin,disableCaptcha'
	),

	// Fields
	'fields' => array
	(
		'id' => array
		(
			'sql'                     => "int(10) unsigned NOT NULL auto_increment"
		),
		'tstamp' => array
		(
			'sql'                     => "int(10) unsigned NOT NULL default '0'"
		),
		'title' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['title'],
			'exclude'                 => true,
			'search'                  => true,
			'inputType'               => 'text',
			'eval'                    => array('mandatory'=>true, 'maxlength'=>255),
			'sql'                     => "varchar(255) NOT NULL default ''"
		),
		'jumpTo' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['jumpTo'],
			'exclude'                 => true,
			'inputType'               => 'pageTree',
			'foreignKey'              => 'tl_page.title',
			'eval'                    => array('mandatory'=>true, 'fieldType'=>'radio'),
			'sql'                     => "int(10) unsigned NOT NULL default '0'",
			'relation'                => array('type'=>'hasOne', 'load'=>'eager')
		),
		'protected' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['protected'],
			'exclude'                 => true,
			'filter'                  => true,
			'inputType'               => 'checkbox',
			'eval'                    => array('submitOnChange'=>true),
			'sql'                     => "char(1) NOT NULL default ''"
		),
		'groups' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['groups'],
			'exclude'                 => true,
			'inputType'               => 'checkbox',
			'foreignKey'              => 'tl_member_group.name',
			'eval'                    => array('mandatory'=>true, 'multiple'=>true),
			'sql'                     => "blob NULL",
			'relation'                => array('type'=>'hasMany', 'load'=>'lazy')
		),
		'allowComments' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['allowComments'],
			'exclude'                 => true,
			'filter'                  => true,
			'inputType'               => 'checkbox',
			'eval'                    => array('submitOnChange'=>true),
			'sql'                     => "char(1) NOT NULL default ''"
		),
		'notify' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['notify'],
			'default'                 => 'notify_admin',
			'exclude'                 => true,
			'inputType'               => 'select',
			'options'                 => array('notify_admin', 'notify_author', 'notify_both'),
			'reference'               => &$GLOBALS['TL_LANG']['tl_calendar'],
			'sql'                     => "varchar(32) NOT NULL default ''"
		),
		'sortOrder' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['sortOrder'],
			'default'                 => 'ascending',
			'exclude'                 => true,
			'inputType'               => 'select',
			'options'                 => array('ascending', 'descending'),
			'reference'               => &$GLOBALS['TL_LANG']['MSC'],
			'eval'                    => array('tl_class'=>'w50'),
			'sql'                     => "varchar(32) NOT NULL default ''"
		),
		'perPage' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['perPage'],
			'exclude'                 => true,
			'inputType'               => 'text',
			'eval'                    => array('rgxp'=>'natural', 'tl_class'=>'w50'),
			'sql'                     => "smallint(5) unsigned NOT NULL default '0'"
		),
		'moderate' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['moderate'],
			'exclude'                 => true,
			'inputType'               => 'checkbox',
			'eval'                    => array('tl_class'=>'w50'),
			'sql'                     => "char(1) NOT NULL default ''"
		),
		'bbcode' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['bbcode'],
			'exclude'                 => true,
			'inputType'               => 'checkbox',
			'eval'                    => array('tl_class'=>'w50'),
			'sql'                     => "char(1) NOT NULL default ''"
		),
		'requireLogin' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['requireLogin'],
			'exclude'                 => true,
			'inputType'               => 'checkbox',
			'eval'                    => array('tl_class'=>'w50'),
			'sql'                     => "char(1) NOT NULL default ''"
		),
		'disableCaptcha' => array
		(
			'label'                   => &$GLOBALS['TL_LANG']['tl_calendar']['disableCaptcha'],
			'exclude'                 => true,
			'inputType'               => 'checkbox',
			'eval'                    => array('tl_class'=>'w50'),
			'sql'                     => "char(1) NOT NULL default ''"
		)
	)
);


/**
 * Provide miscellaneous methods that are used by the data configuration array.
 *
 * @author Leo Feyer <https://github.com/leofeyer>
 */
class tl_calendar extends Backend
{

	/**
	 * Import the back end user object
	 */
	public function __construct()
	{
		parent::__construct();
		$this->import('BackendUser', 'User');
	}


	/**
	 * Check permissions to edit table tl_calendar
	 */
	public function checkPermission()
	{
		// HOOK: comments extension required
		if (!in_array('comments', ModuleLoader::getActive()))
		{
			unset($GLOBALS['TL_DCA']['tl_calendar']['fields']['allowComments']);
		}

		if ($this->User->isAdmin)
		{
			return;
		}

		// Set root IDs
		if (!is_array($this->User->calendars) || empty($this->User->calendars))
		{
			$root = array(0);
		}
		else
		{
			$root = $this->User->calendars;
		}

		$GLOBALS['TL_DCA']['tl_calendar']['list']['sorting']['root'] = $root;

		// Check permissions to add calendars
		if (!$this->User->hasAccess('create', 'calendarp'))
		{
			$GLOBALS['TL_DCA']['tl_calendar']['config']['closed'] = true;
		}

		// Check current action
		switch (Input::get('act'))
		{
			case 'create':
			case 'select':
				// Allow
				break;

			case 'edit':
				// Dynamically add the record to the user profile
				if (!in_array(Input::get('id'), $root))
				{
					$arrNew = $this->Session->get('new_records');

					if (is_array($arrNew['tl_calendar']) && in_array(Input::get('id'), $arrNew['tl_calendar']))
					{
						// Add the permissions on group level
						if ($this->User->inherit != 'custom')
						{
							$objGroup = $this->Database->execute("SELECT id, calendars, calendarp FROM tl_user_group WHERE id IN(" . implode(',', array_map('intval', $this->User->groups)) . ")");

							while ($objGroup->next())
							{
								$arrCalendarp = deserialize($objGroup->calendarp);

								if (is_array($arrCalendarp) && in_array('create', $arrCalendarp))
								{
									$arrCalendars = deserialize($objGroup->calendars, true);
									$arrCalendars[] = Input::get('id');

									$this->Database->prepare("UPDATE tl_user_group SET calendars=? WHERE id=?")
												   ->execute(serialize($arrCalendars), $objGroup->id);
								}
							}
						}

						// Add the permissions on user level
						if ($this->User->inherit != 'group')
						{
							$objUser = $this->Database->prepare("SELECT calendars, calendarp FROM tl_user WHERE id=?")
													   ->limit(1)
													   ->execute($this->User->id);

							$arrCalendarp = deserialize($objUser->calendarp);

							if (is_array($arrCalendarp) && in_array('create', $arrCalendarp))
							{
								$arrCalendars = deserialize($objUser->calendars, true);
								$arrCalendars[] = Input::get('id');

								$this->Database->prepare("UPDATE tl_user SET calendars=? WHERE id=?")
											   ->execute(serialize($arrCalendars), $this->User->id);
							}
						}

						// Add the new element to the user object
						$root[] = Input::get('id');
						$this->User->calendars = $root;
					}
				}
				// No break;

			case 'copy':
			case 'delete':
			case 'show':
				if (!in_array(Input::get('id'), $root) || (Input::get('act') == 'delete' && !$this->User->hasAccess('delete', 'calendarp')))
				{
					$this->log('Not enough permissions to '.Input::get('act').' calendar ID "'.Input::get('id').'"', __METHOD__, TL_ERROR);
					$this->redirect('contao/main.php?act=error');
				}
				break;

			case 'editAll':
			case 'deleteAll':
			case 'overrideAll':
				$session = $this->Session->getData();
				if (Input::get('act') == 'deleteAll' && !$this->User->hasAccess('delete', 'calendarp'))
				{
					$session['CURRENT']['IDS'] = array();
				}
				else
				{
					$session['CURRENT']['IDS'] = array_intersect($session['CURRENT']['IDS'], $root);
				}
				$this->Session->setData($session);
				break;

			default:
				if (strlen(Input::get('act')))
				{
					$this->log('Not enough permissions to '.Input::get('act').' calendars', __METHOD__, TL_ERROR);
					$this->redirect('contao/main.php?act=error');
				}
				break;
		}
	}


	/**
	 * Check for modified calendar feeds and update the XML files if necessary
	 */
	public function generateFeed()
	{
		$session = $this->Session->get('calendar_feed_updater');

		if (!is_array($session) || empty($session))
		{
			return;
		}

		$this->import('Calendar');

		foreach ($session as $id)
		{
			$this->Calendar->generateFeedsByCalendar($id);
		}

		$this->import('Automator');
		$this->Automator->generateSitemap();

		$this->Session->set('calendar_feed_updater', null);
	}


	/**
	 * Schedule a calendar feed update
	 *
	 * This method is triggered when a single calendar or multiple calendars
	 * are modified (edit/editAll).
	 *
	 * @param DataContainer $dc
	 */
	public function scheduleUpdate(DataContainer $dc)
	{
		// Return if there is no ID
		if (!$dc->id)
		{
			return;
		}

		// Store the ID in the session
		$session = $this->Session->get('calendar_feed_updater');
		$session[] = $dc->id;
		$this->Session->set('calendar_feed_updater', array_unique($session));
	}


	/**
	 * Return the manage feeds button
	 *
	 * @param string $href
	 * @param string $label
	 * @param string $title
	 * @param string $class
	 * @param string $attributes
	 *
	 * @return string
	 */
	public function manageFeeds($href, $label, $title, $class, $attributes)
	{
		return ($this->User->isAdmin || !empty($this->User->calendarfeeds) || $this->User->hasAccess('create', 'calendarfeedp')) ? '<a href="'.$this->addToUrl($href).'" class="'.$class.'" title="'.specialchars($title).'"'.$attributes.'>'.$label.'</a> ' : '';
	}


	/**
	 * Return the edit header button
	 *
	 * @param array  $row
	 * @param string $href
	 * @param string $label
	 * @param string $title
	 * @param string $icon
	 * @param string $attributes
	 *
	 * @return string
	 */
	public function editHeader($row, $href, $label, $title, $icon, $attributes)
	{
		return $this->User->canEditFieldsOf('tl_calendar') ? '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.specialchars($title).'"'.$attributes.'>'.Image::getHtml($icon, $label).'</a> ' : Image::getHtml(preg_replace('/\.gif$/i', '_.gif', $icon)).' ';
	}


	/**
	 * Return the copy calendar button
	 *
	 * @param array  $row
	 * @param string $href
	 * @param string $label
	 * @param string $title
	 * @param string $icon
	 * @param string $attributes
	 *
	 * @return string
	 */
	public function copyCalendar($row, $href, $label, $title, $icon, $attributes)
	{
		return $this->User->hasAccess('create', 'calendarp') ? '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.specialchars($title).'"'.$attributes.'>'.Image::getHtml($icon, $label).'</a> ' : Image::getHtml(preg_replace('/\.gif$/i', '_.gif', $icon)).' ';
	}


	/**
	 * Return the delete calendar button
	 *
	 * @param array  $row
	 * @param string $href
	 * @param string $label
	 * @param string $title
	 * @param string $icon
	 * @param string $attributes
	 *
	 * @return string
	 */
	public function deleteCalendar($row, $href, $label, $title, $icon, $attributes)
	{
		return $this->User->hasAccess('delete', 'calendarp') ? '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.specialchars($title).'"'.$attributes.'>'.Image::getHtml($icon, $label).'</a> ' : Image::getHtml(preg_replace('/\.gif$/i', '_.gif', $icon)).' ';
	}
}
