<?php

require_once(dirname(__FILE__) . '/../../config.php');

require_once($CFG->dirroot . '/course/lib.php');

require_once($CFG->dirroot . '/lib/filestorage/file_storage.php');

require_once($CFG->dirroot . '/question/format.php');

require_once($CFG->dirroot . '/mod/quiz/locallib.php');

require_once($CFG->dirroot . '/mod/feedback/lib.php');

require_once($CFG->dirroot . '/question/format/gift/format.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/lib.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/langfilter.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/oppia_api_helper.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/activity/activity.class.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/activity/page.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/activity/quiz.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/activity/resource.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/activity/feedback.php');

require_once($CFG->dirroot . '/blocks/oppia_mobile_export/activity/url.php');

require_once($CFG->libdir.'/componentlib.class.php');

$id = required_param('id',PARAM_INT);

$stylesheet = required_param('stylesheet',PARAM_TEXT);

$priority = required_param('coursepriority',PARAM_INT);

$tags = required_param('coursetags',PARAM_TEXT);

$server = required_param('server',PARAM_TEXT);

$course = $DB->get_record('course', array('id'=>$id));

$PAGE->set_url('/blocks/oppia_mobile_export/export2.php', array('id' => $id));

context_helper::preload_course($id);

$context = context_course::instance($course->id);

if (!$context) {

print_error('nocontext');

}

require_login($course);

$PAGE->set_pagelayout('course');

$PAGE->set_pagetype('course-view-' . $course->format);

$PAGE->set_other_editing_capability('moodle/course:manageactivities');

$PAGE->set_title(get_string('course') . ': ' . $course->fullname);

$PAGE->set_heading($course->fullname);

echo $OUTPUT->header();

// Check specified server belongs to current user

$server_connection = $DB->get_record('block_oppia_mobile_server', array('moodleuserid'=>$USER->id,'id'=>$server));

if(!$server_connection && $server != "default"){

echo "<p>".get_string('server_not_owner','block_oppia_mobile_export')."</p>";

echo $OUTPUT->footer();

die();

}

if ($server == "default"){

$server_connection = new stdClass();

$server_connection->url = $CFG->block_oppia_mobile_export_default_server;

$server_connection->username = $CFG->block_oppia_mobile_export_default_username;

$server_connection->apikey = $CFG->block_oppia_mobile_export_default_api_key;

}

global $QUIZ_CACHE;

$QUIZ_CACHE = array();

$DEFAULT_LANG = "en";

global $MOBILE_LANGS;

$MOBILE_LANGS = array();

global $MEDIA;

$MEDIA = array();

$advice = array();

//make course dir etc for output

deleteDir("output/".$USER->id."/temp");

deleteDir("output/".$USER->id);

if(!is_dir("output")){

mkdir("output",0777);

}

mkdir("output/".$USER->id,0777);

mkdir("output/".$USER->id."/temp/",0777);

$course_root = "output/".$USER->id."/temp/".strtolower($course->shortname);

mkdir($course_root,0777);

mkdir($course_root."/images",0777);

$fh = fopen($course_root."/images/.nomedia", 'w');

fclose($fh);

mkdir($course_root."/resources",0777);

$fh = fopen($course_root."/resources/.nomedia", 'w');

fclose($fh);

mkdir($course_root."/style_resources",0777);

mkdir($course_root."/js",0777);

$PAGE->set_context($context);

context_helper::preload_course($id);

$modinfo = get_fast_modinfo($course);

$sections = $modinfo->get_section_info_all();

$mods = $modinfo->get_cms();

$versionid = date("YmdHis");

$xmlDoc = new DOMDocument();

$root = $xmlDoc->appendChild($xmlDoc->createElement("module"));

$meta = $root->appendChild($xmlDoc->createElement("meta"));

$meta->appendChild($xmlDoc->createElement("versionid",$versionid));

$meta->appendChild($xmlDoc->createElement("priority",$priority));

$meta->appendChild($xmlDoc->createElement("server",$server_connection->url));

add_or_update_oppiaconfig($id, 'coursepriority', $priority);

add_or_update_oppiaconfig($id, 'coursetags', $tags);

$a = new stdClass();

$a->stepno = 2;

$a->coursename = strip_tags($course->fullname);

echo "<h2>".get_string('export_title','block_oppia_mobile_export', $a)."</h2>";

$title = extractLangs($course->fullname);

if(is_array($title) && count($title)>0){

foreach($title as $l=>$t){

$temp = $xmlDoc->createElement("title");

$temp->appendChild($xmlDoc->createTextNode(strip_tags($t)));

$temp->appendChild($xmlDoc->createAttribute("lang"))->appendChild($xmlDoc->createTextNode($l));

$meta->appendChild($temp);

}

} else {;

$temp = $xmlDoc->createElement("title");

$temp->appendChild($xmlDoc->createTextNode(strip_tags($course->fullname)));

$temp->appendChild($xmlDoc->createAttribute("lang"))->appendChild($xmlDoc->createTextNode($DEFAULT_LANG));

$meta->appendChild($temp);

}

$meta->appendChild($xmlDoc->createElement("shortname",strtolower($course->shortname)));

$summary = extractLangs($course->summary);

if(is_array($summary) && count($summary)>0){

foreach($summary as $l=>$s){

$temp = $xmlDoc->createElement("description");

$temp->appendChild($xmlDoc->createTextNode(trim(strip_tags($s))));

$temp->appendChild($xmlDoc->createAttribute("lang"))->appendChild($xmlDoc->createTextNode($l));

$meta->appendChild($temp);

}

} else {;

$temp = $xmlDoc->createElement("description");

$temp->appendChild($xmlDoc->createTextNode(trim(strip_tags($course->summary))));

$temp->appendChild($xmlDoc->createAttribute("lang"))->appendChild($xmlDoc->createTextNode($DEFAULT_LANG));

$meta->appendChild($temp);

}

/*-------Get course info pages/about etc----------------------*/

$thissection = $sections[0];

$sectionmods = explode(",", $thissection->sequence);

$i = 1;

foreach ($sectionmods as $modnumber) {

if (empty($modinfo->sections[0])) {

continue;

}

$mod = $mods[$modnumber];

if($mod->modname == 'page' && $mod->visible == 1){

echo "<p>".$mod->name."</p>";

$page = new mobile_activity_page();

$page->courseroot = $course_root;

$page->id = $mod->id;

$page->section = 0;

$page->process();

$page->getXML($mod,$i,false,$meta,$xmlDoc);

}

if($mod->modname == 'quiz' && $mod->visible == 1){

echo "<p>".$mod->name."</p>";

$quiz = new mobile_activity_quiz();

$random = optional_param('quiz_'.$mod->id.'_randomselect',0,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'randomselect', $random);

$showfeedback = optional_param('quiz_'.$mod->id.'_showfeedback',2,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'showfeedback', $showfeedback);

$allowtryagain = optional_param('quiz_'.$mod->id.'_allowtryagain',1,PARAM_BOOL);

add_or_update_oppiaconfig($mod->id, 'allowtryagain', $allowtryagain);

$passthreshold = optional_param('quiz_'.$mod->id.'_passthreshold',0,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'passthreshold', $passthreshold);

$availability = optional_param('quiz_'.$mod->id.'_availability',0,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'availability', $availability);

$configArray = Array('randomselect'=>$random,

'showfeedback'=>$showfeedback,

'allowtryagain'=>$allowtryagain,

'passthreshold'=>$passthreshold,

'availability'=>$availability);

$quiz->init($server_connection, $course->shortname,"Pre-test",$configArray,$versionid);

$quiz->courseroot = $course_root;

$quiz->id = $mod->id;

$quiz->section = 0;

$quiz->preprocess();

if ($quiz->get_is_valid()){

$quiz->process();

$quiz->getXML($mod,$i,true,$meta,$xmlDoc);

}

}

if($mod->modname == 'feedback' && $mod->visible == 1){

echo $mod->name."<br/>";

$feedback = new mobile_activity_feedback();

$feedback->init($server_connection, $course->shortname,$mod->name,$versionid);

$feedback->courseroot = $course_root;

$feedback->id = $mod->id;

$feedback->section = 0;

$feedback->preprocess();

if ($feedback->get_is_valid()){

$feedback->process();

$feedback->getXML($mod,$i,true,$meta,$xmlDoc);

} else {

echo get_string('error_feedback_no_questions','block_oppia_mobile_export')."<br/>";

}

}

$i++;

}

/*-----------------------------*/

// get module image (from course summary)

$filename = extractImageFile($course->summary,

'course',

'summary',

'0',

$context->id,

$course_root,0);

if($filename){

$resizedFilename = resizeImage($course_root."/".$filename,

$course_root."/images/".$context->id,

$CFG->block_oppia_mobile_export_course_icon_width,

$CFG->block_oppia_mobile_export_course_icon_height,

true);

unlink($course_root."/".$filename) or die('Unable to delete the file');

$temp = $xmlDoc->createElement("image");

$temp->appendChild($xmlDoc->createAttribute("filename"))->appendChild($xmlDoc->createTextNode("/images/".$resizedFilename));

$meta->appendChild($temp);

}

$index = Array();

$structure = $xmlDoc->createElement("structure");

$sect_orderno = 1;

foreach($sections as $sect) {

flush_buffers();

$sectionmods = explode(",", $sect->sequence);

if(strip_tags($sect->summary) != "" && count($sectionmods)>0){

echo "<h3>".get_string('export_section_title','block_oppia_mobile_export',strip_tags($sect->summary,'<span>'))."</h3>";

$section = $xmlDoc->createElement("section");

$section->appendChild($xmlDoc->createAttribute("order"))->appendChild($xmlDoc->createTextNode($sect_orderno));

$title = extractLangs($sect->summary);

if(is_array($title) && count($title)>0){

foreach($title as $l=>$t){

$temp = $xmlDoc->createElement("title",strip_tags($t));

$temp->appendChild($xmlDoc->createAttribute("lang"))->appendChild($xmlDoc->createTextNode($l));

$section->appendChild($temp);

}

} else {

$temp = $xmlDoc->createElement("title",strip_tags($sect->summary));

$temp->appendChild($xmlDoc->createAttribute("lang"))->appendChild($xmlDoc->createTextNode($DEFAULT_LANG));

$section->appendChild($temp);

}

// get image for this section

$filename = extractImageFile($sect->summary,

'course',

'section',

$sect->id,

$context->id,

$course_root,0);

if($filename){

$temp = $xmlDoc->createElement("image");

$temp->appendChild($xmlDoc->createAttribute("filename"))->appendChild($xmlDoc->createTextNode($filename));

$section->appendChild($temp);

}

$act_orderno = 1;

$activities = $xmlDoc->createElement("activities");

foreach ($sectionmods as $modnumber) {

if ($modnumber == "" || $modnumber === false){

continue;

}

$mod = $mods[$modnumber];

if($mod->modname == 'page' && $mod->visible == 1){

echo $mod->name."<br/>";

$page = new mobile_activity_page();

$page->courseroot = $course_root;

$page->id = $mod->id;

$page->section = $sect_orderno;

$page->process();

$page->getXML($mod,$act_orderno,true,$activities,$xmlDoc);

$act_orderno++;

}

if($mod->modname == 'quiz' && $mod->visible == 1){

echo $mod->name."<br/>";

$quiz = new mobile_activity_quiz();

$random = optional_param('quiz_'.$mod->id.'_randomselect',0,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'randomselect', $random);

$showfeedback = optional_param('quiz_'.$mod->id.'_showfeedback',1,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'showfeedback', $showfeedback);

$allowtryagain = optional_param('quiz_'.$mod->id.'_allowtryagain',1,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'allowtryagain', $allowtryagain);

$passthreshold = optional_param('quiz_'.$mod->id.'_passthreshold',0,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'passthreshold', $passthreshold);

$availability = optional_param('quiz_'.$mod->id.'_availability',0,PARAM_INT);

add_or_update_oppiaconfig($mod->id, 'availability', $availability);

$configArray = Array('randomselect'=>$random,

'showfeedback'=>$showfeedback,

'allowtryagain'=>$allowtryagain,

'passthreshold'=>$passthreshold,

'availability'=>$availability);

$quiz->init($server_connection, $course->shortname,$sect->summary,$configArray,$versionid);

$quiz->courseroot = $course_root;

$quiz->id = $mod->id;

$quiz->section = $sect_orderno;

$quiz->preprocess();

if ($quiz->get_is_valid()){

$quiz->process();

$quiz->getXML($mod,$act_orderno,true,$activities,$xmlDoc);

$act_orderno++;

} else {

echo get_string('error_quiz_no_questions','block_oppia_mobile_export')."<br/>";

}

}

if($mod->modname == 'resource' && $mod->visible == 1){

echo $mod->name."<br/>";

$resource = new mobile_activity_resource();

$resource->courseroot = $course_root;

$resource->id = $mod->id;

$resource->section = $sect_orderno;

$resource->process();

$resource->getXML($mod,$act_orderno,true,$activities,$xmlDoc);

$act_orderno++;

}

if($mod->modname == 'url' && $mod->visible == 1){

echo $mod->name."<br/>";

$url = new mobile_activity_url();

$url->courseroot = $course_root;

$url->id = $mod->id;

$url->section = $sect_orderno;

$url->process();

$url->getXML($mod,$act_orderno,true,$activities,$xmlDoc);

$act_orderno++;

}

if($mod->modname == 'feedback' && $mod->visible == 1){

echo $mod->name."<br/>";

$feedback = new mobile_activity_feedback();

$feedback->init($server_connection, $course->shortname,$sect->summary,$versionid);

$feedback->courseroot = $course_root;

$feedback->id = $mod->id;

$feedback->section = $sect_orderno;

$feedback->preprocess();

if ($feedback->get_is_valid()){

$feedback->process();

$feedback->getXML($mod,$act_orderno,true,$activities,$xmlDoc);

$act_orderno++;

} else {

echo get_string('error_feedback_no_questions','block_oppia_mobile_export')."<br/>";

}

}

flush_buffers();

}

if ($act_orderno>1){

$section->appendChild($activities);

$structure->appendChild($section);

$sect_orderno++;

} else {

echo get_string('error_section_no_activities','block_oppia_mobile_export')."<br/>";

}

flush_buffers();

}

}

echo "Finished exporting activities and sections";

$root->appendChild($structure);

// add in the langs available here

$langs = $xmlDoc->createElement("langs");

foreach($MOBILE_LANGS as $k=>$v){

$temp = $xmlDoc->createElement("lang",$k);

$langs->appendChild($temp);

}

if(count($MOBILE_LANGS) == 0){

$temp = $xmlDoc->createElement("lang",$DEFAULT_LANG);

$langs->appendChild($temp);

}

$meta->appendChild($langs);

// add media includes

if(count($MEDIA) > 0){

$media = $xmlDoc->createElement("media");

foreach ($MEDIA as $m){

$temp = $xmlDoc->createElement("file");

foreach($m as $var => $value) {

$temp->appendChild($xmlDoc->createAttribute($var))->appendChild($xmlDoc->createTextNode($value));

}

$media->appendChild($temp);

}

$root->appendChild($media);

}

$xmlDoc->save($course_root."/module.xml");

echo "<p>".get_string('export_xml_valid_start','block_oppia_mobile_export');

libxml_use_internal_errors(true);

$xml = new DOMDocument();

$xml->load($course_root."/module.xml");

if (!$xml->schemaValidate('./oppia-schema.xsd')) {

print '<p><b>'.get_string('error_xml_invalid','block_oppia_mobile_export').'</b></p>';

libxml_display_errors();

} else {

echo get_string('export_xml_validated','block_oppia_mobile_export')."<p/>";

echo "<p>".get_string('export_course_xml_created','block_oppia_mobile_export')."</p>";

echo "<p>".get_string('export_style_start','block_oppia_mobile_export')."</p>";

if (!copy("styles/".$stylesheet, $course_root."/style.css")) {

echo "<p>".get_string('error_style_copy','block_oppia_mobile_export')."</p>";

}

echo "<p>".get_string('export_style_resources','block_oppia_mobile_export')."</p>";

list($filename, $extn) = explode('.', $stylesheet);

recurse_copy("styles/".$filename."-style-resources/", $course_root."/style_resources/");

recurse_copy("js/", $course_root."/js/");

echo "<p>".get_string('export_export_complete','block_oppia_mobile_export')."</p>";

$dir2zip = "output/".$USER->id."/temp";

$outputzip = "output/".$USER->id."/".strtolower($course->shortname)."-".$versionid.".zip";

Zip($dir2zip,$outputzip);

echo "<p>".get_string('export_export_compressed','block_oppia_mobile_export')."</p>";

deleteDir("output/".$USER->id."/temp");

$a = new stdClass();

$a->zip = $outputzip;

$a->coursename = strip_tags($course->fullname);

echo "<div style='font-weight:bold; font-size:150%; display:block; border: 1px solid #000; padding:20px'>".get_string('export_download','block_oppia_mobile_export', $a )."</div>";

// form to publish to OppiaMobile server

echo "<form style='display:block; border: 1px solid #000; padding:20px; margin:20px 0;' action='".$CFG->wwwroot."/blocks/oppia_mobile_export/publish_course.php' method='POST'>";

echo "<input type='hidden' name='id' value='".$COURSE->id."'>";

echo "<input type='hidden' name='sesskey' value='".sesskey()."'>";

echo "<input type='hidden' name='server' value='".$server."'>";

echo "<input type='hidden' name='file' value='".$a->zip."'>";

echo "<h2>".get_string('publish_heading','block_oppia_mobile_export')."</h2>";

echo "<p>".get_string('publish_text','block_oppia_mobile_export',$server_connection->url)."</p>";

echo "<p>".get_string('publish_field_username','block_oppia_mobile_export')."<br/>";

echo "<input type='text' name='username' value=''></p>";

echo "<p>".get_string('publish_field_password','block_oppia_mobile_export')."<br/>";

echo "<input type='password' name='password' value=''></p>";

echo "<p>".get_string('publish_field_tags','block_oppia_mobile_export')."<br/>";

echo "<input type='text' name='tags' value='".$tags."' size='100'></p>";

$is_draft = get_oppiaconfig($COURSE->id,'is_draft','True');

echo "<p><input type='checkbox' name='is_draft' value='True'";

if($is_draft == 'True'){

echo "checked='checked'/>";

} else {

echo "/>";

}

echo get_string('publish_field_draft','block_oppia_mobile_export')."<br/>";

echo get_string('publish_field_draft_info','block_oppia_mobile_export')."</p>";

echo "<p><input type='submit' name='submit' value='Publish'></p>";

echo "</form>";

// link to cleanup files

echo "<p><a href='cleanup.php?id=".$id."'>".get_string('export_cleanup','block_oppia_mobile_export')."</a></p>";

if(count($advice)> 0){

echo "<p>".get_string('export_advice_desc','block_oppia_mobile_export')."</p><ol>";

foreach($advice as $a){

echo "<li>".$a."</li>";

}

echo "</ol>";

}

}

echo $OUTPUT->footer();

?>