<?php
/* For licensing terms, see /license.txt */

/**
 * Class CourseDescriptionController
 * This file contains class used like controller, it should be included inside a dispatcher file (e.g: index.php)
 * @author Christian Fasanando <christian1827@gmail.com>
 * @package chamilo.course_description
 */
class CourseDescriptionController
{
	private $toolname;
	private $view;

	/**
	 * Constructor
	 */
	public function __construct()
    {
		$this->toolname = 'course_description';
		$this->view = new View($this->toolname);
	}

    /**
     * It's used for listing course description,
     * render to listing view
     * @param boolean   	true for listing history (optional)
     * @param array 	message for showing by action['edit','add','destroy'] (optional)
     */
    public function listing($history=false, $messages=array())
    {
        $course_description = new CourseDescription();
        $session_id = api_get_session_id();
        $course_description->set_session_id($session_id);
        $data = array();
        $course_description_data = $course_description->get_description_data();
        $data['descriptions'] = $course_description_data['descriptions'];
        $data['default_description_titles'] = $course_description->get_default_description_title();
        $data['default_description_title_editable'] = $course_description->get_default_description_title_editable();
        $data['default_description_icon'] = $course_description->get_default_description_icon();
        $data['messages'] = $messages;
        $browser = api_get_navigator();

        if (!is_array($data['descriptions'])) {
            $data['descriptions'] = array($data['descriptions']);
        }
        foreach ($data['descriptions'] as $description) {
            if (strpos($description, '<iframe') !== false && $browser['name'] == 'Chrome') {
                header("X-XSS-Protection: 0");
            }
        }

        // render to the view
        $this->view->set_data($data);
        $this->view->set_layout('layout');
        $this->view->set_template('listing');
        $this->view->render();
    }

    /**
     * It's used for editing a course description,
     * render to listing or edit view
     * @param int description type
     */
    public function edit($id, $description_type)
    {
        $course_description = new CourseDescription();
        $session_id = api_get_session_id();
        $course_description->set_session_id($session_id);
        $data = array();
        $data['id'] = $id;
        if (strtoupper($_SERVER['REQUEST_METHOD']) == "POST") {
            if (!empty($_POST['title']) && !empty($_POST['contentDescription'])) {
                $check = Security::check_token();
                if ($check) {
                    $title = $_POST['title'];
                    if (api_get_setting('wcag_anysurfer_public_pages') == 'true') {
                        $content = WCAG_Rendering::prepareXHTML();
                    } else {
                        $content = $_POST['contentDescription'];
                    }
                    $description_type = $_POST['description_type'];
                    $id = $_POST['id'];
                    $progress = $_POST['progress'];
                    $course_description->set_description_type($description_type);
                    $course_description->set_title($title);
                    $course_description->set_content($content);
                    $course_description->set_progress($progress);
                    $thematic_advance = $course_description->get_data_by_id($id);

                    if (!empty($thematic_advance)) {
                        $course_description->set_id($id);
                        $affected_rows = $course_description->update();
                    } else {
                        $affected_rows = $course_description->insert();
                    }
                    Security::clear_token();
                }

                if ($affected_rows) {
                    $message['edit'] = true;
                }
                $this->listing(false, $message);
            } else {
                $data['error'] = 1;
                $data['default_description_titles'] = $course_description->get_default_description_title();
                $data['default_description_title_editable'] = $course_description->get_default_description_title_editable();
                $data['default_description_icon'] = $course_description->get_default_description_icon();
                $data['question'] = $course_description->get_default_question();
                $data['information'] = $course_description->get_default_information();
                $data['description_title'] = $_POST['title'];
                $data['description_content'] = $_POST['contentDescription'];
                $data['description_type'] = $_POST['description_type'];
                $data['progress'] = $_POST['progress'];
                $data['descriptions'] = $course_description->get_data_by_id($_POST['id']);
                // render to the view
                $this->view->set_data($data);
                $this->view->set_layout('layout');
                $this->view->set_template('edit');
                $this->view->render();
            }
        } else {

            $data['default_description_titles'] = $course_description->get_default_description_title();
            $data['default_description_title_editable'] = $course_description->get_default_description_title_editable();
            $data['default_description_icon'] = $course_description->get_default_description_icon();
            $data['question'] = $course_description->get_default_question();
            $data['information'] = $course_description->get_default_information();

            $data['description_type'] = $description_type;

            if (!empty($id)) {
                if (isset($_GET['id_session'])) {
                    $session_id = intval($_GET['id_session']);
                }
                $course_description_data = $course_description->get_data_by_id($id, null, $session_id);
                $data['description_type'] = $course_description_data['description_type'];
                $data['description_title'] = $course_description_data['description_title'];
                $data['description_content'] = $course_description_data['description_content'];
                $data['progress'] = $course_description_data['progress'];
                $data['descriptions'] = $course_description->get_data_by_description_type($description_type, null, $session_id);
            }

            // render to the view
            $this->view->set_data($data);
            $this->view->set_layout('layout');
            $this->view->set_template('edit');
            $this->view->render();
        }
    }

    /**
    * It's used for adding a course description,
    * render to listing or add view
    */
	public function add()
    {
		$course_description = new CourseDescription();
		$session_id = api_get_session_id();
		$course_description->set_session_id($session_id);

		$data = array();
        if (strtoupper($_SERVER['REQUEST_METHOD']) == "POST") {
        	if (!empty($_POST['title']) && !empty($_POST['contentDescription'])) {

        		$check = Security::check_token();
        		if ($check) {
        			$title = $_POST['title'];
		        	if (api_get_setting('wcag_anysurfer_public_pages')=='true') {
						$content = WCAG_Rendering::prepareXHTML();
					} else {
						$content = $_POST['contentDescription'];
					}
		        	$description_type = $_POST['description_type'];
		        	if ($description_type >= ADD_BLOCK) {
		        		$course_description->set_description_type($description_type);
		        		$course_description->set_title($title);
		        		$course_description->set_content($content);
						$affected_rows = $course_description->insert(api_get_course_int_id());
		        	}
		        	Security::clear_token();
        		}
        		if ($affected_rows) {
					$message['add'] = true;
				}
				$this->listing(false,$message);
        	} else {
        		$data['error'] = 1;
        		$data['default_description_titles'] = $course_description->get_default_description_title();
				$data['default_description_title_editable'] = $course_description->get_default_description_title_editable();
				$data['default_description_icon'] = $course_description->get_default_description_icon();
				$data['question'] = $course_description->get_default_question();
				$data['information'] = $course_description->get_default_information();
        		$data['description_title'] = $_POST['title'];
        		$data['description_content'] = $_POST['contentDescription'];
        		$data['description_type'] = $_POST['description_type'];
				$this->view->set_data($data);
				$this->view->set_layout('layout');
				$this->view->set_template('add');
				$this->view->render();
        	}
        } else {
			$data['default_description_titles'] = $course_description->get_default_description_title();
			$data['default_description_title_editable'] = $course_description->get_default_description_title_editable();
			$data['default_description_icon'] = $course_description->get_default_description_icon();
			$data['question'] = $course_description->get_default_question();
			$data['information'] = $course_description->get_default_information();
			$data['description_type'] = $course_description->get_max_description_type();
			// render to the view
			$this->view->set_data($data);
			$this->view->set_layout('layout');
			$this->view->set_template('add');
			$this->view->render();
        }
	}

	/**
	 * It's used for destroy a course description,
	 * render to listing view
	 * @param int description type
	 */
	public function destroy($id)
    {
		$course_description = new CourseDescription();
		$session_id = api_get_session_id();
		$course_description->set_session_id($session_id);
		if (!empty($id)) {
			$course_description->set_id($id);
			$affected_rows = $course_description->delete();
		}
		if ($affected_rows) {
			$message['destroy'] = true;
		}
		$this->listing(false, $message);
	}
}