/backup/cc/entity.quiz.class.php

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * @package   moodlecore

 * @subpackage backup-imscc

 * @copyright 2009 Mauro Rondinelli (mauro.rondinelli [AT] uvcms.com)

 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */



defined('MOODLE_INTERNAL') or die('Direct access to this script is forbidden.');



class quiz extends entities {



    private $namespaces = array('xmlns' => 'http://www.imsglobal.org/xsd/ims_qtiasiv1p2');



    public function generate_node_question_categories () {



        $instances = $this->generate_instances();



        $node_course_question_categories = $this->create_node_course_question_categories($instances);

        $node_course_question_categories = empty($node_course_question_categories) ? '' : $node_course_question_categories;



        return $node_course_question_categories;



    }



    public function generate_node_course_modules_mod () {



        cc2moodle::log_action('Creating Quiz mods');



        $node_course_modules_mod = '';

        $instances = $this->generate_instances();



        if (!empty($instances)) {

            foreach ($instances as $instance) {

                if ($instance['is_question_bank'] == 0) {

                    $node_course_modules_mod .= $this->create_node_course_modules_mod($instance);

                }

            }

        }



        return $node_course_modules_mod;



    }



    private function create_node_course_modules_mod_quiz_feedback () {



        $sheet_question_mod_feedback = cc2moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_QUIZ_FEEDBACK);



        return $sheet_question_mod_feedback;

    }



    private function generate_instances () {



        $last_instance_id = 0;

        $last_question_id = 0;

        $last_answer_id = 0;



        $instances = '';



        $types = array(MOODLE_TYPE_QUIZ, MOODLE_TYPE_QUESTION_BANK);



        foreach ($types as $type) {



            if (!empty(cc2moodle::$instances['instances'][$type])) {



                foreach (cc2moodle::$instances['instances'][$type] as $instance) {



                    if ($type == MOODLE_TYPE_QUIZ) {

                        $is_question_bank = 0;

                    } else {

                        $is_question_bank = 1;

                    }



                    $assessment_file = $this->get_external_xml($instance['resource_indentifier']);



                    if (!empty($assessment_file)) {



                        $assessment = $this->load_xml_resource(cc2moodle::$path_to_manifest_folder . DIRECTORY_SEPARATOR . $assessment_file);



                        if (!empty($assessment)) {



                            $replace_values = array('unlimited' => 0);



                            $questions = $this->get_questions($assessment, $last_question_id, $last_answer_id, dirname($assessment_file), $is_question_bank);

                            $question_count = count($questions);



                            if (!empty($question_count)) {



                                $last_instance_id++;



                                $instances[$instance['resource_indentifier']]['questions'] = $questions;

                                $instances[$instance['resource_indentifier']]['id'] = $last_instance_id;

                                $instances[$instance['resource_indentifier']]['title'] = $instance['title'];

                                $instances[$instance['resource_indentifier']]['is_question_bank'] = $is_question_bank;

                                $instances[$instance['resource_indentifier']]['options']['timelimit'] = $this->get_global_config($assessment, 'qmd_timelimit', 0);

                                $instances[$instance['resource_indentifier']]['options']['max_attempts'] = $this->get_global_config($assessment, 'cc_maxattempts', 0, $replace_values);

                            }

                        }

                    }

                }

            }

        }



        return $instances;

    }





    private function create_node_course_modules_mod ($instance) {



        $sheet_question_mod = cc2moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_QUIZ);



        $node_course_modules_quiz_question_instances = $this->create_node_course_modules_mod_quiz_question_instances($instance);

        $node_course_modules_quiz_feedback = $this->create_node_course_modules_mod_quiz_feedback($instance);



        $questions_strings = $this->get_questions_string($instance);

        $quiz_stamp = 'localhost+' . time() . '+' . $this->generate_random_string(6);



        $find_tags = array('[#mod_id#]',

                           '[#mod_name#]',

                           '[#mod_intro#]',

                           '[#mod_stamp#]',

                           '[#question_string#]',

                           '[#date_now#]',

                           '[#mod_max_attempts#]',

                           '[#mod_timelimit#]',

                           '[#node_question_instance#]',

                           '[#node_questions_feedback#]');



        $replace_values = array($instance['id'],

                                $instance['title'],

                                $instance['title'],

                                $quiz_stamp,

                                $questions_strings,

                                time(),

                                $instance['options']['max_attempts'],

                                $instance['options']['timelimit'],

                                $node_course_modules_quiz_question_instances,

                                $node_course_modules_quiz_feedback);



        $node_question_mod = str_replace($find_tags, $replace_values, $sheet_question_mod);



        return $node_question_mod;

    }



    private function get_global_config ($assessment, $option, $default_value, $replace_values = '') {



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);

        $metadata = $xpath->query('/xmlns:questestinterop/xmlns:assessment/xmlns:qtimetadata/xmlns:qtimetadatafield');



        foreach ($metadata as $field) {

            $field_label = $xpath->query('xmlns:fieldlabel', $field);

            $field_label = !empty($field_label->item(0)->nodeValue) ? $field_label->item(0)->nodeValue : '';



            if (strtolower($field_label) == strtolower($option)) {

                $field_entry = $xpath->query('xmlns:fieldentry', $field);

                $response = !empty($field_entry->item(0)->nodeValue) ? $field_entry->item(0)->nodeValue : '';

            }

        }



        $response = !empty($response) ? trim($response) : '';



        if (!empty($replace_values)) {

            foreach ($replace_values as $key => $value) {

                $response = ($key == $response) ? $value : $response;

            }

        }



        $response = empty($response) ? $default_value : $response;



        return $response;

    }



    private function create_node_course_modules_mod_quiz_question_instances ($instance) {



        $node_course_module_mod_quiz_questions_instances = '';

        $sheet_question_mod_instance = cc2moodle::loadsheet(SHEET_COURSE_SECTIONS_SECTION_MODS_MOD_QUIZ_QUESTION_INSTANCE);



        $find_tags = array('[#question_id#]' , '[#instance_id#]');



        if (!empty($instance['questions'])) {



            foreach ($instance['questions'] as $question) {

                $replace_values = array($question['id'] , $question['id']);

                $node_course_module_mod_quiz_questions_instances .= str_replace($find_tags, $replace_values, $sheet_question_mod_instance);

            }



            $node_course_module_mod_quiz_questions_instances = str_replace($find_tags, $replace_values, $node_course_module_mod_quiz_questions_instances);

        }



        return $node_course_module_mod_quiz_questions_instances;

    }



    private function get_questions_string ($instance) {



        $questions_string = '';



        if (!empty($instance['questions'])) {

            foreach ($instance['questions'] as $question) {

                $questions_string .= $question['id'] . ',';

            }

        }



        $questions_string = !empty($questions_string) ? substr($questions_string, 0, strlen($questions_string) - 1) : '';



        return $questions_string;

    }



    private function create_node_course_question_categories ($instances) {



        $sheet_question_categories = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES);



        if (!empty($instances)) {



            $node_course_question_categories_question_category = '';



            foreach ($instances as $instance) {

                $node_course_question_categories_question_category .= $this->create_node_course_question_categories_question_category($instance);

            }



            $find_tags = array('[#node_course_question_categories_question_category#]');

            $replace_values = array($node_course_question_categories_question_category);



            $node_course_question_categories = str_replace($find_tags, $replace_values, $sheet_question_categories);

        }



        $node_course_question_categories = empty($node_course_question_categories) ? '' : $node_course_question_categories;



        return $node_course_question_categories;

    }



    private function create_node_course_question_categories_question_category ($instance) {



        $sheet_question_categories_quetion_category = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY);



        $find_tags = array('[#quiz_id#]',

                           '[#quiz_name#]',

                           '[#quiz_stamp#]',

                           '[#node_course_question_categories_question_category_questions#]');



        $node_course_question_categories_questions = $this->create_node_course_question_categories_question_category_question($instance);

        $node_course_question_categories_questions = empty($node_course_question_categories_questions) ? '' : $node_course_question_categories_questions;



        $quiz_stamp = 'localhost+' . time() . '+' . $this->generate_random_string(6);



        $replace_values = array($instance['id'],

                                $instance['title'],

                                $quiz_stamp,

                                $node_course_question_categories_questions);



        $node_question_categories = str_replace($find_tags, $replace_values, $sheet_question_categories_quetion_category);



        return $node_question_categories;

    }



    private function create_node_course_question_categories_question_category_question ($instance) {



        global $USER;



        $node_course_question_categories_question = '';



        $find_tags = array('[#question_id#]',

                           '[#question_title#]',

                           '[#question_text#]',

                           '[#question_type#]',

                           '[#question_general_feedback#]',

                           '[#date_now#]',

                           '[#question_type_nodes#]',

                           '[#question_stamp#]',

                           '[#question_version#]',

                           '[#logged_user#]');



        $sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION);



        $questions = $instance['questions'];



        if (!empty($questions)) {



            foreach ($questions as $question) {



                $quiz_stamp = 'localhost+' . time() . '+' . $this->generate_random_string(6);

                $quiz_version = 'localhost+' . time() . '+' . $this->generate_random_string(6);



                $question_moodle_type = $question['moodle_type'];

                $question_cc_type = $question['cc_type'];



                $question_type_node = '';



                $question_type_node = ($question_moodle_type == MOODLE_QUIZ_MULTIPLE_CHOICE) ? $this->create_node_course_question_categories_question_category_question_multiple_choice($question) : $question_type_node;

                $question_type_node = ($question_moodle_type == MOODLE_QUIZ_TRUE_FALSE) ? $this->create_node_course_question_categories_question_category_question_true_false($question) : $question_type_node;

                $question_type_node = ($question_moodle_type == MOODLE_QUIZ_ESSAY) ? $this->create_node_course_question_categories_question_category_question_eesay($question) : $question_type_node;

                $question_type_node = ($question_moodle_type == MOODLE_QUIZ_SHORTANSWER) ? $this->create_node_course_question_categories_question_category_question_shortanswer($question) : $question_type_node;



                $replace_values = array($question['id'],

                                        $this->truncate_text($question['title'], 255, true),

                                        $question['title'],

                                        $question_moodle_type,

                                        $question['feedback'],

                                        time(),

                                        $question_type_node,

                                        $quiz_stamp,

                                        $quiz_version,

                                        $USER->id);



                $node_course_question_categories_question .= str_replace($find_tags, $replace_values, $sheet_question_categories_question);

            }

        }



        $node_course_question_categories_question = empty($node_course_question_categories_question) ? '' : $node_course_question_categories_question;



        return $node_course_question_categories_question;

    }



    private function get_questions ($assessment, &$last_question_id, &$last_answer_id, $root_path, $is_question_bank) {



        $questions = array();



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);



        if (!$is_question_bank) {

            $questions_items = $xpath->query('/xmlns:questestinterop/xmlns:assessment/xmlns:section/xmlns:item');

        } else {

            $questions_items = $xpath->query('/xmlns:questestinterop/xmlns:objectbank/xmlns:item');

        }



        foreach ($questions_items as $question_item) {



            $count_questions = $xpath->evaluate('count(xmlns:presentation/xmlns:flow/xmlns:material/xmlns:mattext)', $question_item);



            if ($count_questions == 0) {

                $question_title = $xpath->query('xmlns:presentation/xmlns:material/xmlns:mattext', $question_item);

            } else {

                $question_title = $xpath->query('xmlns:presentation/xmlns:flow/xmlns:material/xmlns:mattext', $question_item);

            }



            $question_title = !empty($question_title->item(0)->nodeValue) ? $question_title->item(0)->nodeValue : '';



            $question_identifier = $xpath->query('@ident', $question_item);

            $question_identifier = !empty($question_identifier->item(0)->nodeValue) ? $question_identifier->item(0)->nodeValue : '';



            if (!empty($question_identifier)) {



                $question_type = $this->get_question_type($question_identifier, $assessment);



                if (!empty($question_type['moodle'])) {



                    $last_question_id++;



                    $questions[$question_identifier]['id'] = $last_question_id;



                    $question_title = $this->update_sources($question_title, $root_path);

                    $question_title = !empty($question_title) ? str_replace("%24", "\$", $this->include_titles($question_title)) : '';



                    $questions[$question_identifier]['title'] = $question_title;

                    $questions[$question_identifier]['identifier'] = $question_identifier;

                    $questions[$question_identifier]['moodle_type'] = $question_type['moodle'];

                    $questions[$question_identifier]['cc_type'] = $question_type['cc'];

                    $questions[$question_identifier]['feedback'] = $this->get_general_feedback($assessment, $question_identifier);

                    $questions[$question_identifier]['answers'] = $this->get_answers($question_identifier, $assessment, $last_answer_id);



                }

            }

        }



        $questions = !empty($questions) ? $questions : '';



        return $questions;

    }



    private function str_replace_once ($search, $replace, $subject) {



        $first_char = strpos($subject, $search);



        if ($first_char !== false) {



            $before_str = substr($subject, 0, $first_char);

            $after_str = substr($subject, $first_char + strlen($search));



            return $before_str . $replace . $after_str;



        } else {

            return $subject;

        }

    }



    private function get_general_feedback ($assessment, $question_identifier) {



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);



        $respconditions = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');



        if (!empty($respconditions)) {



            foreach ($respconditions as $respcondition) {



                $continue = $respcondition->getAttributeNode('continue');

                $continue = !empty($continue->nodeValue) ? strtolower($continue->nodeValue) : '';



                if ($continue == 'yes') {



                    $display_feedback = $xpath->query('xmlns:displayfeedback', $respcondition);



                    if (!empty($display_feedback)) {

                        foreach ($display_feedback as $feedback) {



                            $feedback_identifier = $feedback->getAttributeNode('linkrefid');

                            $feedback_identifier = !empty($feedback_identifier->nodeValue) ? $feedback_identifier->nodeValue : '';



                            if (!empty($feedback_identifier)) {

                                $feedbacks_identifiers[] = $feedback_identifier;

                            }

                        }

                    }

                }

            }

        }



        $feedback = '';

        $feedbacks_identifiers = empty($feedbacks_identifiers) ? '' : $feedbacks_identifiers;



        if (!empty($feedbacks_identifiers)) {

            foreach ($feedbacks_identifiers as $feedback_identifier) {

                $feedbacks = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:itemfeedback[@ident="' . $feedback_identifier . '"]/xmlns:flow_mat/xmlns:material/xmlns:mattext');

                $feedback .= !empty($feedbacks->item(0)->nodeValue) ? $feedbacks->item(0)->nodeValue . ' ' : '';

            }

        }



        return $feedback;

    }



    private function get_feedback ($assessment, $identifier, $item_identifier, $question_type) {



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);



        $resource_processing = $xpath->query('//xmlns:item[@ident="' . $item_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');



        if (!empty($resource_processing)) {



            foreach ($resource_processing as $response) {



                $varequal = $xpath->query('xmlns:conditionvar/xmlns:varequal', $response);

                $varequal = !empty($varequal->item(0)->nodeValue) ? $varequal->item(0)->nodeValue : '';



                if (strtolower($varequal) == strtolower($identifier) || ($question_type == CC_QUIZ_ESSAY)) {



                    $display_feedback = $xpath->query('xmlns:displayfeedback', $response);



                    if (!empty($display_feedback)) {

                        foreach ($display_feedback as $feedback) {



                            $feedback_identifier = $feedback->getAttributeNode('linkrefid');

                            $feedback_identifier = !empty($feedback_identifier->nodeValue) ? $feedback_identifier->nodeValue : '';



                            if (!empty($feedback_identifier)) {

                                $feedbacks_identifiers[] = $feedback_identifier;

                            }

                        }

                    }

                }

            }

        }



        $feedback = '';

        $feedbacks_identifiers = empty($feedbacks_identifiers) ? '' : $feedbacks_identifiers;



        if (!empty($feedbacks_identifiers)) {

            foreach ($feedbacks_identifiers as $feedback_identifier) {

                $feedbacks = $xpath->query('//xmlns:item[@ident="' . $item_identifier . '"]/xmlns:itemfeedback[@ident="' . $feedback_identifier . '"]/xmlns:flow_mat/xmlns:material/xmlns:mattext');

                $feedback .= !empty($feedbacks->item(0)->nodeValue) ? $feedbacks->item(0)->nodeValue . ' ' : '';

            }

        }



        return $feedback;

    }



    private function get_answers_fib ($question_identifier, $identifier, $assessment, &$last_answer_id) {



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);



        $answers_fib = array();



        $response_items = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');



        foreach ($response_items as $response_item) {



            $setvar = $xpath->query('xmlns:setvar', $response_item);

            $setvar = is_object($setvar->item(0)) ? $setvar->item(0)->nodeValue : '';



            if ($setvar != '') {



                $last_answer_id++;



                $answer_title = $xpath->query('xmlns:conditionvar/xmlns:varequal[@respident="' . $identifier . '"]', $response_item);

                $answer_title = !empty($answer_title->item(0)->nodeValue) ? $answer_title->item(0)->nodeValue : '';



            $case = $xpath->query('xmlns:conditionvar/xmlns:varequal/@case', $response_item);

            $case = is_object($case->item(0)) ? $case->item(0)->nodeValue : 'no'

                                    ;

            $case = strtolower($case) == 'yes' ? 1 :

                            0;



                $display_feedback = $xpath->query('xmlns:displayfeedback', $response_item);



                unset($feedbacks_identifiers);



                if (!empty($display_feedback)) {



                    foreach ($display_feedback as $feedback) {



                        $feedback_identifier = $feedback->getAttributeNode('linkrefid');

                        $feedback_identifier = !empty($feedback_identifier->nodeValue) ? $feedback_identifier->nodeValue : '';



                        if (!empty($feedback_identifier)) {

                            $feedbacks_identifiers[] = $feedback_identifier;

                        }

                    }

                }



                $feedback = '';

                $feedbacks_identifiers = empty($feedbacks_identifiers) ? '' : $feedbacks_identifiers;



                if (!empty($feedbacks_identifiers)) {

                    foreach ($feedbacks_identifiers as $feedback_identifier) {

                        $feedbacks = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:itemfeedback[@ident="' . $feedback_identifier . '"]/xmlns:flow_mat/xmlns:material/xmlns:mattext');

                        $feedback .= !empty($feedbacks->item(0)->nodeValue) ? $feedbacks->item(0)->nodeValue . ' ' : '';

                    }

                }



                $answers_fib[] = array('id' => $last_answer_id,

                                       'title' => $answer_title,

                                       'score' => $setvar,

                                       'feedback' => $feedback,

                                       'case' => $case);

            }

        }



        $answers_fib = empty($answers_fib) ? '' : $answers_fib;



        return $answers_fib;

    }



    private function get_answers_pattern_match ($question_identifier, $identifier, $assessment, &$last_answer_id) {



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);



        $answers_fib = array();



        $response_items = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');



        foreach ($response_items as $response_item) {



            $setvar = $xpath->query('xmlns:setvar', $response_item);

            $setvar = is_object($setvar->item(0)) ? $setvar->item(0)->nodeValue : '';



            if ($setvar != '') {



                $last_answer_id++;



                $answer_title = $xpath->query('xmlns:conditionvar/xmlns:varequal[@respident="' . $identifier . '"]', $response_item);

                $answer_title = !empty($answer_title->item(0)->nodeValue) ? $answer_title->item(0)->nodeValue : '';



                if (empty($answer_title)) {

                    $answer_title = $xpath->query('xmlns:conditionvar/xmlns:varsubstring[@respident="' . $identifier . '"]', $response_item);

                    $answer_title = !empty($answer_title->item(0)->nodeValue) ? '*' . $answer_title->item(0)->nodeValue . '*' : '';

                }



                if (empty($answer_title)) {

                    $answer_title = '*';

                }



            $case = $xpath->query('xmlns:conditionvar/xmlns:varequal/@case', $response_item);

            $case = is_object($case->item(0)) ? $case->item(0)->nodeValue : 'no'

                                    ;

            $case = strtolower($case) == 'yes' ? 1 :

                            0;



                $display_feedback = $xpath->query('xmlns:displayfeedback', $response_item);



                unset($feedbacks_identifiers);



                if (!empty($display_feedback)) {



                    foreach ($display_feedback as $feedback) {



                        $feedback_identifier = $feedback->getAttributeNode('linkrefid');

                        $feedback_identifier = !empty($feedback_identifier->nodeValue) ? $feedback_identifier->nodeValue : '';



                        if (!empty($feedback_identifier)) {

                            $feedbacks_identifiers[] = $feedback_identifier;

                        }

                    }

                }



                $feedback = '';

                $feedbacks_identifiers = empty($feedbacks_identifiers) ? '' : $feedbacks_identifiers;



                if (!empty($feedbacks_identifiers)) {

                    foreach ($feedbacks_identifiers as $feedback_identifier) {

                        $feedbacks = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:itemfeedback[@ident="' . $feedback_identifier . '"]/xmlns:flow_mat/xmlns:material/xmlns:mattext');

                        $feedback .= !empty($feedbacks->item(0)->nodeValue) ? $feedbacks->item(0)->nodeValue . ' ' : '';

                    }

                }



                $answers_fib[] = array('id' => $last_answer_id,

                                       'title' => $answer_title,

                                       'score' => $setvar,

                                       'feedback' => $feedback,

                                       'case' => $case);

            }

        }



        $answers_fib = empty($answers_fib) ? '' : $answers_fib;



        return $answers_fib;

    }





    private function get_answers ($identifier, $assessment, &$last_answer_id) {



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);



        $answers = array();



        $question_cc_type = $this->get_question_type($identifier, $assessment);

        $question_cc_type = $question_cc_type['cc'];



        if ($question_cc_type == CC_QUIZ_MULTIPLE_CHOICE || $question_cc_type == CC_QUIZ_MULTIPLE_RESPONSE || $question_cc_type == CC_QUIZ_TRUE_FALSE) {



            $query_answers = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:response_lid/xmlns:render_choice/xmlns:response_label';

            $query_answers_with_flow = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:flow/xmlns:response_lid/xmlns:render_choice/xmlns:response_label';



            $query_indentifer = '@ident';

            $query_title = 'xmlns:material/xmlns:mattext';

        }



        if ($question_cc_type == CC_QUIZ_ESSAY) {



            $query_answers = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:response_str';

            $query_answers_with_flow = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:flow/xmlns:response_str';



            $query_indentifer = '@ident';

            $query_title = 'xmlns:render_fib';

        }



        if ($question_cc_type == CC_QUIZ_FIB || $question_cc_type == CC_QUIZ_PATTERN_MACHT) {



            $xpath_query = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:response_str/@ident';

            $xpath_query_with_flow = '//xmlns:item[@ident="' . $identifier . '"]/xmlns:presentation/xmlns:flow/xmlns:response_str/@ident';



            $count_response = $xpath->evaluate('count(' . $xpath_query_with_flow . ')');



            if ($count_response == 0) {

                $answer_identifier = $xpath->query($xpath_query);

            } else {

                $answer_identifier = $xpath->query($xpath_query_with_flow);

            }



            $answer_identifier = !empty($answer_identifier->item(0)->nodeValue) ? $answer_identifier->item(0)->nodeValue : '';



            if ($question_cc_type == CC_QUIZ_FIB) {

                $answers = $this->get_answers_fib ($identifier, $answer_identifier, $assessment, $last_answer_id);

            } else {

                $answers = $this->get_answers_pattern_match ($identifier, $answer_identifier, $assessment, $last_answer_id);

            }



        } else {



            $count_response = $xpath->evaluate('count(' . $query_answers_with_flow . ')');



            if ($count_response == 0) {

                $response_items = $xpath->query($query_answers);

            } else {

                $response_items = $xpath->query($query_answers_with_flow);

            }



            if (!empty($response_items)) {



                foreach ($response_items as $response_item) {



                    $last_answer_id++;



                    $answer_identifier = $xpath->query($query_indentifer, $response_item);

                    $answer_identifier = !empty($answer_identifier->item(0)->nodeValue) ? $answer_identifier->item(0)->nodeValue : '';



                    $answer_title = $xpath->query($query_title, $response_item);

                    $answer_title = !empty($answer_title->item(0)->nodeValue) ? $answer_title->item(0)->nodeValue : '';



                    $answer_feedback = $this->get_feedback($assessment, $answer_identifier, $identifier, $question_cc_type);



                    $answer_score = $this->get_score($assessment, $answer_identifier, $identifier);



                    $answers[] = array('id' => $last_answer_id,

                                       'title' => $answer_title,

                                       'score' => $answer_score,

                                       'identifier' => $answer_identifier,

                                       'feedback' => $answer_feedback);

                }

            }

        }



        $answers = empty($answers) ? '' : $answers;



        return $answers;



    }



    private function get_score ($assessment, $identifier, $question_identifier) {



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);



        $resource_processing = $xpath->query('//xmlns:item[@ident="' . $question_identifier . '"]/xmlns:resprocessing/xmlns:respcondition');



        if (!empty($resource_processing)) {



            foreach ($resource_processing as $response) {



                $question_cc_type = $this->get_question_type($question_identifier, $assessment);

                $question_cc_type = $question_cc_type['cc'];



                $varequal = $xpath->query('xmlns:conditionvar/xmlns:varequal', $response);

                $varequal = !empty($varequal->item(0)->nodeValue) ? $varequal->item(0)->nodeValue : '';



                if (strtolower($varequal) == strtolower($identifier)) {

                    $score = $xpath->query('xmlns:setvar', $response);

                    $score = !empty($score->item(0)->nodeValue) ? $score->item(0)->nodeValue : '';

                }

            }

        }



        $score = empty($score) ? 0 : $score;



        return $score;

    }



    private function create_node_course_question_categories_question_category_question_multiple_choice ($question) {



        $node_course_question_categories_question_answer = '';

        $sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_MULTIPLE_CHOICE);



        if (!empty($question['answers'])) {

            foreach ($question['answers'] as $answer) {

                $node_course_question_categories_question_answer .= $this->create_node_course_question_categories_question_category_question_answer($answer);

            }

        }



        $answer_string = $this->get_answers_string($question['answers']);



        $is_single = ($question['cc_type'] == CC_QUIZ_MULTIPLE_CHOICE) ? 1 : 0;



        $find_tags = array('[#node_course_question_categories_question_category_question_answer#]',

                           '[#answer_string#]',

                           '[#is_single#]');



        $replace_values = array($node_course_question_categories_question_answer,

                                $answer_string,

                                $is_single);



        $node_question_categories_question = str_replace($find_tags, $replace_values, $sheet_question_categories_question);



        return $node_question_categories_question;

    }



    private function create_node_course_question_categories_question_category_question_eesay ($question) {



        $node_course_question_categories_question_answer = '';



        $sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_EESAY);



        if (!empty($question['answers'])) {

            foreach ($question['answers'] as $answer) {

                $node_course_question_categories_question_answer .= $this->create_node_course_question_categories_question_category_question_answer($answer);

            }

        }



        $find_tags = array('[#node_course_question_categories_question_category_question_answer#]');

        $replace_values = array($node_course_question_categories_question_answer);



        $node_question_categories_question = str_replace($find_tags, $replace_values, $sheet_question_categories_question);



        return $node_question_categories_question;

    }



    private function create_node_course_question_categories_question_category_question_shortanswer ($question) { //, &$fib_questions) {



        $sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_SHORTANSWER);

        $node_course_question_categories_question_answer = '';



        if (!empty($question['answers'])) {

            foreach ($question['answers'] as $answer) {

                $node_course_question_categories_question_answer .= $this->create_node_course_question_categories_question_category_question_answer($answer);

            }

        }



        $answers_string = $this->get_answers_string($question['answers']);



        $use_case = 0;



        foreach ($question['answers'] as $answer) {



            if ($answer['case'] == 1) {

                $use_case = 1;

            }



        }



        $find_tags = array('[#answers_string#]',

                           '[#use_case#]',

                           '[#node_course_question_categories_question_category_question_answer#]');



        $replace_values = array($answers_string,

                                $use_case,

                                $node_course_question_categories_question_answer);







        $node_question_categories_question = str_replace($find_tags, $replace_values, $sheet_question_categories_question);



        return $node_question_categories_question;



    }



    private function create_node_course_question_categories_question_category_question_true_false ($question) {



        $node_course_question_categories_question_answer = '';



        $sheet_question_categories_question = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_TRUE_FALSE);



        $max_score = 0;

        $true_answer_id = 0;

        $false_answer_id = 0;



        if (!empty($question['answers'])) {



            foreach ($question['answers'] as $answer) {

                if ($answer['score'] > $max_score) {

                    $max_score = $answer['score'];

                    $true_answer_id = $answer['id'];

                }



                $node_course_question_categories_question_answer .= $this->create_node_course_question_categories_question_category_question_answer($answer);

            }



            foreach ($question['answers'] as $answer) {



                if ($answer['id'] != $true_answer_id) {

                    $max_score = $answer['score'];

                    $false_answer_id = $answer['id'];

                }

            }

        }



        $find_tags = array('[#node_course_question_categories_question_category_question_answer#]',

                           '[#true_answer_id#]',

                           '[#false_answer_id#]');



        $replace_values = array($node_course_question_categories_question_answer,

                                $true_answer_id,

                                $false_answer_id);



        $node_question_categories_question = str_replace($find_tags, $replace_values, $sheet_question_categories_question);



        return $node_question_categories_question;

    }



    private function get_answers_string ($answers) {



        $answer_string = '';



        if (!empty($answers)) {

            foreach ($answers as $answer) {

                $answer_string .= $answer['id'] . ',';

            }

        }



        $answer_string = !empty($answer_string) ? substr($answer_string, 0, strlen($answer_string) - 1) : '';



        return $answer_string;



    }



    private function create_node_course_question_categories_question_category_question_answer ($answer) {



        $sheet_question_categories_question_answer = cc2moodle::loadsheet(SHEET_COURSE_QUESTION_CATEGORIES_QUESTION_CATEGORY_QUESTION_ANSWER);



        $find_tags = array('[#answer_id#]',

                           '[#answer_text#]',

                           '[#answer_score#]',

                           '[#answer_feedback#]');



        $replace_values = array($answer['id'],

                                $answer['title'],

                                $answer['score'],

                                $answer['feedback']);



        $node_question_categories_question_answer = str_replace($find_tags, $replace_values, $sheet_question_categories_question_answer);



        return $node_question_categories_question_answer;

    }



    private function get_question_type ($identifier, $assessment) {



        $xpath = cc2moodle::newx_path($assessment, $this->namespaces);



        $metadata = $xpath->query('//xmlns:item[@ident="' . $identifier . '"]/xmlns:itemmetadata/xmlns:qtimetadata/xmlns:qtimetadatafield');



        foreach ($metadata as $field) {



            $field_label = $xpath->query('xmlns:fieldlabel', $field);

            $field_label = !empty($field_label->item(0)->nodeValue) ? $field_label->item(0)->nodeValue : '';



            if ($field_label == 'cc_profile') {

                $field_entry = $xpath->query('xmlns:fieldentry', $field);

                $type = !empty($field_entry->item(0)->nodeValue) ? $field_entry->item(0)->nodeValue : '';

            }

        }



        $return_type = array();



        $return_type['moodle'] = '';

        $return_type['cc'] = $type;



        if ($type == CC_QUIZ_MULTIPLE_CHOICE) {

            $return_type['moodle'] = MOODLE_QUIZ_MULTIPLE_CHOICE;

        }

        if ($type == CC_QUIZ_MULTIPLE_RESPONSE) {

            $return_type['moodle'] = MOODLE_QUIZ_MULTIPLE_CHOICE;

        }

        if ($type == CC_QUIZ_TRUE_FALSE) {

            $return_type['moodle'] = MOODLE_QUIZ_TRUE_FALSE;

        }

        if ($type == CC_QUIZ_ESSAY) {

            $return_type['moodle'] = MOODLE_QUIZ_ESSAY;

        }

        if ($type == CC_QUIZ_FIB) {

            $return_type['moodle'] = MOODLE_QUIZ_SHORTANSWER;

        }

        if ($type == CC_QUIZ_PATTERN_MACHT) {

            $return_type['moodle'] = MOODLE_QUIZ_SHORTANSWER;

        }



        return $return_type;



    }

}

?>