<?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\questtypes;
	
	
	/**
	 * Controller of the ChoiceinputQuesttypeAgent for choosing between
	 * predefined input values.
	 * 
	 * @author	Oliver Hanraths <oliver.hanraths@uni-duesseldorf.de>
	 */
	class ChoiceinputQuesttypeController extends \hhu\z\controllers\QuesttypeController
	{
		/**
		 * Required components
		 * 
		 * @var array
		 */
		public $components = array('validation');
		
		
		/**
		 * Save the answers of a Character for a Quest.
		 * 
		 * @param	array	$seminary	Current Seminary data
		 * @param	array	$questgroup	Current Questgroup data
		 * @param	array	$quest		Current Quest data
		 * @param	array	$character	Current Character data
		 * @param	array	$answers	Character answers for the Quest
		 */
		public function saveAnswersOfCharacter($seminary, $questgroup, $quest, $character, $answers)
		{
			// Get lists
			$choiceLists = $this->Choiceinput->getChoiceinputLists($quest['id']);
			
			// Save answers
			foreach($choiceLists as &$list)
			{
				$pos = intval($list['number']) - 1;
				$answer = (array_key_exists($pos, $answers)) ? $answers[$pos] : null;
				$this->Choiceinput->setCharacterSubmission($list['id'], $character['id'], $answer);
			}
		}
		
		
		/**
		 * Save additional data for the answers of a Character for a Quest.
		 * 
		 * @param	array	$seminary	Current Seminary data
		 * @param	array	$questgroup	Current Questgroup data
		 * @param	array	$quest		Current Quest data
		 * @param	array	$character	Current Character data
		 * @param	array	$data		Additional (POST-) data
		 */
		public function saveDataForCharacterAnswers($seminary, $questgroup, $quest, $character, $data)
		{
		}
		
		
		/**
		 * Check if answers of a Character for a Quest match the correct ones.
		 * 
		 * @param	array	$seminary	Current Seminary data
		 * @param	array	$questgroup	Current Questgroup data
		 * @param	array	$quest		Current Quest data
		 * @param	array	$character	Current Character data
		 * @return	boolean			True/false for a right/wrong answer or null for moderator evaluation
		 */
		public function matchAnswersOfCharacter($seminary, $questgroup, $quest, $character, $answers)
		{
			// Get lists
			$choiceLists = $this->Choiceinput->getChoiceinputLists($quest['id']);
			
			// Match lists with user answers
			foreach($choiceLists as &$list)
			{
				$pos = intval($list['number']) - 1;
				if(!array_key_exists($pos, $answers)) {
					return false;
				}
				if($list['questtypes_choiceinput_choice_id'] != $answers[$pos]) {
					return false;
				}
			}
			
			
			// All answers right
			return true;
		}
		
		
		/**
		 * Action: quest.
		 * 
		 * Display a text with lists with predefined values.
		 * 
		 * @param	array		$seminary	Current Seminary data
		 * @param	array		$questgroup	Current Questgroup data
		 * @param	array		$quest		Current Quest data
		 * @param	array		$character	Current Character data
		 * @param	Exception	$exception	Character submission exception
		 */
		public function quest($seminary, $questgroup, $quest, $character, $exception)
		{
			// Get Task
			$task = $this->Choiceinput->getChoiceinputQuest($quest['id']);
			
			// Get lists
			$choiceLists = $this->Choiceinput->getChoiceinputLists($quest['id']);
			foreach($choiceLists as &$list) {
				$list['values'] = $this->Choiceinput->getChoiceinputChoices($list['id']);
			}
			
			// Get Character answers
			if($this->request->getGetParam('show-answer') == 'true' || !$this->Quests->hasCharacterSolvedQuest($quest['id'], $character['id'])  || $this->request->getGetParam('status') == 'solved') {
				foreach($choiceLists as &$list) {
					$list['answer'] = $this->Choiceinput->getCharacterSubmission($list['id'], $character['id']);
				}
			}
			
			
			// Pass data to view
			$this->set('task', $task);
			$this->set('choiceLists', $choiceLists);
		}
		
		
		/**
		 * Action: submission.
		 * 
		 * Show the submission of a Character for a Quest.
		 * 
		 * @param	array	$seminary	Current Seminary data
		 * @param	array	$questgroup	Current Questgroup data
		 * @param	array	$quest		Current Quest data
		 * @param	array	$character	Current Character data
		 */
		public function submission($seminary, $questgroup, $quest, $character)
		{
			// Get Task
			$task = $this->Choiceinput->getChoiceinputQuest($quest['id']);
			
			// Get lists
			$choiceLists = $this->Choiceinput->getChoiceinputLists($quest['id']);
			foreach($choiceLists as &$list)
			{
				$list['values'] = $this->Choiceinput->getChoiceinputChoices($list['id']);
				$list['answer'] = $this->Choiceinput->getCharacterSubmission($list['id'], $character['id']);
				$list['right'] = ($list['questtypes_choiceinput_choice_id'] == $list['answer']);
			}
			
			
			// Pass data to view
			$this->set('task', $task);
			$this->set('choiceLists', $choiceLists);
		}


		/**
		 * Action: edittask.
		 * 
		 * Edit the task of a Quest.
		 * 
		 * @param	array		$seminary	Current Seminary data
		 * @param	array		$questgroup	Current Questgroup data
		 * @param	array		$quest		Current Quest data
		 */
		public function edittask($seminary, $questgroup, $quest)
		{
			// Get Task
			$task = $this->Choiceinput->getChoiceinputQuest($quest['id']);
			$text = $task['text'];
			
			// Get lists
			$choiceLists = $this->Choiceinput->getChoiceinputLists($quest['id']);
			foreach($choiceLists as &$list)
			{
				$list['choices'] = $this->Choiceinput->getChoiceinputChoices($list['id']);
				foreach($list['choices'] as $index => &$choice) {
					//$choice['correct'] = ($choice['id'] == $list['questtypes_choiceinput_choice_id']);
					if($choice['id'] == $list['questtypes_choiceinput_choice_id']) {
						$list['answer'] = $index;
					}
					$choice = $choice['text'];
				}
				//$list = $list['choices'];
			}

			// Values
			$validations = array();

			// Save data
			if($this->request->getRequestMethod() == 'POST')
			{
				if(!is_null($this->request->getPostParam('preview')) || !is_null($this->request->getPostParam('save')))
				{
					// Get params and validate them
					if(is_null($this->request->getPostParam('text'))) {
						throw new \nre\exceptions\ParamsNotValidException('text');
					}
					$text = $this->request->getPostParam('text');
					if(is_null($this->request->getPostParam('lists'))) {
						throw new \nre\exceptions\ParamsNotValidException('lists');
					}
					$choiceLists = $this->request->getPostParam('lists');
					$choiceLists = array_values($choiceLists);
					foreach($choiceLists as $listIndex => &$list)
					{
						// Validate choices
						if(!array_key_exists('choices', $list)) {
							throw new \nre\exceptions\ParamsNotValidException('choices');
						}
						$choiceIndex = 0;
						$answer = null;
						foreach($list['choices'] as $index => &$choice)
						{
							// Validate choice
							$choiceValidation = $this->Validation->validate($choice, \nre\configs\AppConfig::$validation['choice']);
							if($choiceValidation !== true)
							{
								if(!array_key_exists($listIndex, $validations) || !is_array($validations[$listIndex])) {
									$validations[$listIndex] = array();
								}
								if(!array_key_exists('choices', $validations[$listIndex])) {
									$validations[$listIndex]['choices'] = array();
								}
								$validations[$listIndex]['choices'][$choiceIndex] = $choiceValidation;
							}

							$choiceIndex++;
							if(array_key_exists('answer', $list) && $list['answer'] == $index) {
								$answer = $choiceIndex;
							}
						}

						// Validate correct answer
						if(is_null($answer))
						{
							if(!array_key_exists($listIndex, $validations) || !is_array($validations[$listIndex])) {
								$validations[$listIndex] = array();
							}
							if(!array_key_exists('answer', $validations[$listIndex])) {
								$validations[$listIndex]['answer'] = array();
							}
							$validations[$listIndex] = $this->Validation->addValidationResult($validations[$listIndex], 'answer', 'exist', true);
						}
					}

					// Save and redirect
					if(!is_null($this->request->getPostParam('save')) && empty($validations))
					{
						// Save text
						$this->Choiceinput->setTextForQuest(
							$this->Auth->getUserId(),
							$quest['id'],
							$text
						);

						// Save lists and choices
						foreach($choiceLists as $listIndex => &$list)
						{
							// Save list
							$this->Choiceinput->setListForText(
								$quest['id'],
								$listIndex + 1,
								$list['choices'],
								$list['answer'] + 1
							);
						}

						// Redirect
						$this->redirect($this->linker->link(array('quest', $seminary['url'], $questgroup['url'], $quest['url']), 1));
					}
				}
			}


			// Pass data to view
			$this->set('task', $task);
			$this->set('text', $text);
			$this->set('choiceLists', $choiceLists);
			$this->set('validations', $validations);
		}
		
	}

?>