<?php

	/**
	 * The Legend of Z
	 *
	 * @author	Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
	 * @copyright	2014 Heinrich-Heine-Universität Düsseldorf
	 * @license	http://www.gnu.org/licenses/gpl.html
	 * @link	https://bitbucket.org/coderkun/the-legend-of-z
	 */
	
	namespace hhu\z\controllers;
	
	
	/**
	 * Controller of the Agent to list registered seminaries.
	 * 
	 * @author	Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
	 */
	class SeminariesController extends \hhu\z\controllers\SeminaryController
	{
		/**
		 * Required models
		 * 
		 * @var array
		 */
		public $models = array('seminaries', 'users', 'characterroles', 'charactertypes', 'xplevels', 'questgroupshierarchy', 'questgroups', 'questgrouptexts', 'media');
		/**
		 * Required components
		 * 
		 * @var array
		 */
		public $components = array('validation');
		/**
		 * User permissions
		 * 
		 * @var array
		 */
		public $permissions = array(
			'index' => array('admin', 'moderator', 'user'),
			'seminary' => array('admin', 'moderator', 'user'),
			'create' => array('admin', 'moderator'),
			'edit' => array('admin', 'moderator', 'user'),
			'delete' => array('admin', 'moderator', 'user'),
			'calculatexps' => array('admin', 'moderator', 'user')
		);
		/**
		 * User seminary permissions
		 * 
		 * @var array
		 */
		public $seminaryPermissions = array(
			'seminary' => array('admin', 'moderator', 'user', 'guest'),
			'edit' => array('admin'),
			'delete' => array('admin'),
			'calculatexps' => array('admin', 'moderator')
		);
		
		
		
		
		/**
		 * Action: index.
		 * 
		 * List registered seminaries.
		 */
		public function index()
		{
			// Get seminaries
			$seminaries = $this->Seminaries->getSeminaries();
			
			// Get additional data
			foreach($seminaries as &$seminary)
			{
				$description = \hhu\z\Utils::shortenString($seminary['description'], 100, 120);
				$seminary['description'] = $description.(strlen($description) < strlen($seminary['description']) ? ' …' : null);
				$seminary['creator'] = $this->Users->getUserById($seminary['created_user_id']);
				$seminary['charactertypes'] = $this->Charactertypes->getCharacterTypesForSeminary($seminary['id']);
				$seminary['xplevels'] = $this->Xplevels->getXPLevelsForSeminary($seminary['id']);
				
				// Character of currently logged-in user
				try {
					$seminary['usercharacter'] = $this->Characters->getCharacterForUserAndSeminary($this->Auth->getUserId(), $seminary['id']);
					$seminary['usercharacter']['characterroles'] = $this->Characterroles->getCharacterrolesForCharacterById($seminary['usercharacter']['id']);
					$seminary['xps'] = $this->Seminaries->getTotalXPs($seminary['id']);
				}
				catch(\nre\exceptions\IdNotFoundException $e) {
				}
				
			}
			
			
			// Set titile
			$this->addTitleLocalized('Seminaries');
			
			// Pass data to view
			$this->set('seminaries', $seminaries);
		}
		
		
		/**
		 * Action: seminary.
		 * 
		 * Show a seminary and its details.
		 * 
		 * @throws	IdNotFoundException
		 * @param	string	$seminaryUrl	URL-Title of a seminary
		 */
		public function seminary($seminaryUrl)
		{
			// Get seminary
			$seminary = $this->Seminaries->getSeminaryByUrl($seminaryUrl);
			
			// Created user
			$seminary['creator'] = $this->Users->getUserById($seminary['created_user_id']);
			
			// Get Character
			$character = $this->Characters->getCharacterForUserAndSeminary($this->Auth->getUserId(), $seminary['id']);
			
			// Questgrouphierarchy and Questgroups
			$questgroupshierarchy = $this->Questgroupshierarchy->getHierarchyOfSeminary($seminary['id']);
			foreach($questgroupshierarchy as &$hierarchy)
			{
				// Get Questgroups
				$hierarchy['questgroups'] = $this->Questgroups->getQuestgroupsForHierarchy($hierarchy['id']);
				
				// Get additional data
				foreach($hierarchy['questgroups'] as $i => &$questgroup)
				{
					// Check permission of Questgroups
					if($i >= 1 && count(array_intersect(array('admin','moderator'), SeminaryController::$character['characterroles'])) == 0)
					{
						if(!$this->Questgroups->hasCharacterSolvedQuestgroup($hierarchy['questgroups'][$i-1]['id'], $character['id']))
						{
							$hierarchy['questgroups'] = array_slice($hierarchy['questgroups'], 0, $i);
							break;
						}
					}
					
					// Get first Questgroup text
					$text = $this->Questgrouptexts->getFirstQuestgroupText($questgroup['id']);
					if(!is_null($text))
					{
						$questgroup['text'] = \hhu\z\Utils::shortenString($text, 100, 120).' …';
					}
					
					// Get Character XPs
					$questgroup['character_xps'] = $this->Questgroups->getAchievedXPsForQuestgroup($questgroup['id'], $character['id']);
					
					// Get Media
					$questgroup['picture'] = null;
					try {
						$questgroup['picture'] = $this->Media->getSeminaryMediaById($questgroup['questgroupspicture_id']);
					}
					catch(\nre\exceptions\IdNotFoundException $e) {
					}
				}
			}
			
			
			// Set titile
			$this->addTitle($seminary['title']);
			
			// Pass data to view
			$this->set('seminary', $seminary);
			$this->set('questgroupshierarchy', $questgroupshierarchy);
		}
		
		
		/**
		 * Action: create.
		 * 
		 * Create a new Seminary.
		 */
		public function create()
		{
			// Get allowed mimetypes
			$mimetypes = \nre\configs\AppConfig::$mimetypes['moodpics'];
			
			// Values
			$title = '';
			$course = '';
			$description = '';
			$fields = array('title', 'course');
			$validation = array();
			
			// Create a new Seminary
			if($this->request->getRequestMethod() == 'POST' && !is_null($this->request->getPostParam('create')))
			{
				// Get params and validate them
				$validation = $this->Validation->validateParams($this->request->getPostParams(), $fields);
				$title = $this->request->getPostParam('title');
				if($this->Seminaries->seminaryTitleExists($title)) {
					$validation = $this->Validation->addValidationResult($validation, 'title', 'exist', true);
				}
				$course = $this->request->getPostParam('course');
				$description = $this->request->getPostParam('description');
				
				// Validate moodpic
				$moodpic = null;
				if(!empty($_FILES) && array_key_exists('moodpic', $_FILES) && $_FILES['moodpic']['error'] != UPLOAD_ERR_NO_FILE)
				{
					$moodpic = $_FILES['moodpic'];
					
					// Check error
					if($moodpic['error'] !== UPLOAD_ERR_OK) {
						$validation = $this->Validation->addValidationResult($validation, 'moodpic', 'error', $moodpic['error']);
					}
					
					// Check mimetype
					$mediaMimetype = null;
					$moodpic['mimetype'] = \hhu\z\Utils::getMimetype($moodpic['tmp_name'], $moodpic['type']);
					foreach($mimetypes as &$mimetype) {
						if($mimetype['mimetype'] == $moodpic['mimetype']) {
							$mediaMimetype = $mimetype;
							break;
						}
					}
					if(is_null($mediaMimetype)) {
						$validation = $this->Validation->addValidationResult($validation, 'moodpic', 'mimetype', $moodpic['mimetype']);
					}
					elseif($moodpic['size'] > $mediaMimetype['size']) {
						$validation = $this->Validation->addValidationResult($validation, 'moodpic', 'size', $mediaMimetype['size']);
					}
				}
				
				// Create new Seminary
				if($validation === true)
				{
					$seminaryId = $this->Seminaries->createSeminary(
						$this->Auth->getUserId(),
						$title,
						$course,
						$description
					);
					$seminary = $this->Seminaries->getSeminaryById($seminaryId);
					
					// Upload moodpic
					if(!is_null($moodpic))
					{
						$mediaId = $this->Media->createMoodpic(
							$this->Auth->getUserId(),
							$seminary['id'],
							sprintf('seminarymoodpic-%s', $seminary['url']),
							'',
							$moodpic['mimetype'],
							$moodpic['tmp_name']
						);
						if($mediaId !== false) {
							$this->Seminaries->setMoodpicForSeminary($seminary['id'], $mediaId);
						}
					}
				
					// Redirect to Seminary overview
					$this->redirect($this->linker->link('index', 1));
				}
			}
			
			// Get validation settings
			$validationSettings = array();
			foreach($fields as &$field) {
				$validationSettings[$field] = \nre\configs\AppConfig::$validation[$field];
			}
			
			
			// Set titile
			$this->addTitleLocalized('New seminary');
			
			// Pass data to view
			$this->set('title', $title);
			$this->set('course', $course);
			$this->set('description', $description);
			$this->set('mimetypes', $mimetypes);
			$this->set('validation', $validation);
			$this->set('validationSettings', $validationSettings);
		}
		
		
		/**
		 * Action: edit.
		 * 
		 * Edit a seminary.
		 * 
		 * @throws	IdNotFoundException
		 * @param	string	$seminaryUrl	URL-Title of a seminary
		 */
		public function edit($seminaryUrl)
		{
			// Get seminary
			$seminary = $this->Seminaries->getSeminaryByUrl($seminaryUrl);
			
			// Get allowed mimetypes
			$mimetypes = \nre\configs\AppConfig::$mimetypes['moodpics'];
			
			// Values
			$title = $seminary['title'];
			$course = $seminary['course'];
			$description = $seminary['description'];
			$fields = array('title', 'course');
			$validation = array();
			
			// Check request method
			if($this->request->getRequestMethod() == 'POST' && !is_null($this->request->getPostParam('edit')))
			{
				// Get params and validate them
				$validation = $this->Validation->validateParams($this->request->getPostParams(), $fields);
				$title = $this->request->getPostParam('title');
				if($this->Seminaries->seminaryTitleExists($title, $seminary['id'])) {
					$validation = $this->Validation->addValidationResult($validation, 'title', 'exist', true);
				}
				$course = $this->request->getPostParam('course');
				$description = $this->request->getPostParam('description');
				
				// Validate moodpic
				$moodpic = null;
				if(!empty($_FILES) && array_key_exists('moodpic', $_FILES) && $_FILES['moodpic']['error'] != UPLOAD_ERR_NO_FILE)
				{
					$moodpic = $_FILES['moodpic'];
					
					// Check error
					if($moodpic['error'] !== UPLOAD_ERR_OK) {
						$validation = $this->Validation->addValidationResult($validation, 'moodpic', 'error', $moodpic['error']);
					}
					
					// Check mimetype
					$mediaMimetype = null;
					$moodpic['mimetype'] = \hhu\z\Utils::getMimetype($moodpic['tmp_name'], $moodpic['type']);
					foreach($mimetypes as &$mimetype) {
						if($mimetype['mimetype'] == $moodpic['mimetype']) {
							$mediaMimetype = $mimetype;
							break;
						}
					}
					if(is_null($mediaMimetype)) {
						$validation = $this->Validation->addValidationResult($validation, 'moodpic', 'mimetype', $moodpic['mimetype']);
					}
					elseif($moodpic['size'] > $mediaMimetype['size']) {
						$validation = $this->Validation->addValidationResult($validation, 'moodpic', 'size', $mediaMimetype['size']);
					}
				}
				
				// Edit Seminary
				if($validation === true)
				{
					$this->Seminaries->editSeminary(
						$seminary['id'],
						$title,
						$course,
						$description
					);
					$seminary = $this->Seminaries->getSeminaryById($seminary['id']);
					
					// Update moodpic
					if(!is_null($moodpic))
					{
						$mediaId = $this->Media->createMoodpic(
							$this->Auth->getUserId(),
							$seminary['id'],
							sprintf('seminarymoodpic-%s', $seminary['url']),
							'',
							$moodpic['mimetype'],
							$moodpic['tmp_name']
						);
						if($mediaId !== false) {
							$this->Seminaries->setMoodpicForSeminary($seminary['id'], $mediaId);
						}
					}
					
					// Redirect to entry
					$this->redirect($this->linker->link(array('seminary', $seminary['url']), 1));
				}
			}
			
			// Get validation settings
			$validationSettings = array();
			foreach($fields as &$field) {
				$validationSettings[$field] = \nre\configs\AppConfig::$validation[$field];
			}
			
			
			// Set titile
			$this->addTitleLocalized('Edit seminary');
			
			// Pass data to view
			$this->set('seminary', $seminary);
			$this->set('title', $title);
			$this->set('course', $course);
			$this->set('description', $description);
			$this->set('mimetypes', $mimetypes);
			$this->set('validation', $validation);
			$this->set('validationSettings', $validationSettings);
		}
		
		
		/**
		 * Action: delete.
		 * 
		 * Delete a seminary.
		 * 
		 * @throws	IdNotFoundException
		 * @param	string	$seminaryUrl	URL-Title of a seminary
		 */
		public function delete($seminaryUrl)
		{
			// Get seminary
			$seminary = $this->Seminaries->getSeminaryByUrl($seminaryUrl);
			
			// Check request method
			if($this->request->getRequestMethod() == 'POST')
			{
				// Check confirmation
				if(!is_null($this->request->getPostParam('delete')))
				{
					// Delete seminary
					$this->Seminaries->deleteSeminary($seminary['id']);
					
					// Redirect to overview
					$this->redirect($this->linker->link(null, 1));
				}
				
				// Redirect to entry
				$this->redirect($this->linker->link(array('seminary', $seminary['url']), 1));
			}
			
			
			// Set titile
			$this->addTitleLocalized('Delete seminary');
			
			// Show confirmation
			$this->set('seminary', $seminary);
		}
		
		
		/**
		 * Action: calculatexps.
		 * 
		 * (Re-) Calculate the amount of achievable XPs for a Seminary.
		 * 
		 * @throws	IdNotFoundException
		 * @param	string	$seminaryUrl	URL-Title of a Seminary
		 */
		public function calculatexps($seminaryUrl)
		{
			// Get Seminary
			$seminary = $this->Seminaries->getSeminaryByUrl($seminaryUrl);
			
			// Questgrouphierarchy and Questgroups
			$questgroupshierarchy = $this->Questgroupshierarchy->getHierarchyOfSeminary($seminary['id']);
			foreach($questgroupshierarchy as &$hierarchy)
			{
				// Get Questgroups
				$hierarchy['questgroups'] = $this->Questgroups->getQuestgroupsForHierarchy($hierarchy['id']);
				foreach($hierarchy['questgroups'] as &$questgroup)
				{
					// Calculate achievable XPs
					$this->Questgroups->calculateXPsForQuestgroup($questgroup['id']);
				}
			}
			
			
			// Redirect to Questgroup
			$this->redirect($this->linker->link(array('seminary', $seminary['url']), 1));
		}
		
	}

?>