public static function import($url)
{
$upload_dir = wp_upload_dir();
$upload_url = $upload_dir['url'];
$upload_path = $upload_dir['path'];
$dirname = pathinfo($url, PATHINFO_FILENAME);
// filename without extension
$basename = pathinfo($url, PATHINFO_BASENAME);
// file with extension
// Download file
if (file_put_contents($upload_path . '/' . $basename, file_get_contents($url)) === FALSE) {
die('Error : can\'t upload.');
}
// Check file type
if (!zipIsValid($upload_path . '/' . $basename)) {
die('Wrong file.');
}
// Extract archive
$zip = new ZipArchive();
$res = $zip->open($upload_path . '/' . $basename);
// new dirname based on real directory on the zip
$dirname = dirname(trim($zip->getNameIndex(0), '/'));
if ($dirname == '.') {
// In some cases (when zip is not generated via export),
// the getNameIndex already returns the perfect dirname
// so applying dirname() returns "."
$dirname = trim($zip->getNameIndex(0), '/');
}
if ($res === TRUE) {
$zip->extractTo($upload_path);
$zip->close();
} else {
die('Error : can\'t upload.');
}
// Get the json file
$exportJson = file_get_contents($upload_path . '/' . $dirname . '/export.json');
if ($exportJson === FALSE) {
die('Error : can\'t upload.');
}
// Parse raw to json
$exportJson = json_decode($exportJson, true);
if ($exportJson == NULL) {
die('Wrong file.');
}
// Import Quiz
if (!isset($exportJson['settings']['type'])) {
die('Wrong file.');
}
$quizType = $exportJson['settings']['type'];
$quiz = new $quizType();
$quiz->add($exportJson['settings']);
// Upload pictures
foreach (glob("{$upload_path}/{$dirname}/*.{jpg,png,gif}", GLOB_BRACE) as $key => $file) {
$basename = pathinfo($file, PATHINFO_BASENAME);
$oldId = pathinfo($file, PATHINFO_FILENAME);
$newId = custom_media_sideload_image("{$upload_url}/{$dirname}/{$basename}");
array_replace_only_for_key($exportJson['content'], 'pictureId', $oldId, $newId);
}
// Appreciations
foreach ($exportJson['appreciations'] as $appreciation) {
$matches = array();
preg_match_all('#%%export(.*)%%#', $appreciation['content'], $matches);
foreach ($matches[1] as $match) {
$newId = custom_media_sideload_image("{$upload_url}/{$dirname}/{$match}");
$url = wp_get_attachment_url($newId);
$appreciation['content'] = str_replace('%%export' . $match . '%%', $url, $appreciation['content']);
}
$newAppr = $quiz->addAppreciation($appreciation);
$oldId = $appreciation['id'];
$newId = $newAppr->getId();
array_replace_only_for_key($exportJson['content'], 'appreciationId', $oldId, $newId);
}
// Questions + answers
foreach ($exportJson['content'] as $content) {
$question = $content['question'];
$question = $quiz->addQuestion($question);
// Answers
foreach ($content['answers'] as $index => $answer) {
$multipliers = $quizType == 'WPVQGameTrueFalse' ? array() : $answer['multipliers'];
$question->addAnswer($answer, NULL, $multipliers);
}
}
// ExtraOptions
if (isset($exportJson['extraOptions'])) {
foreach ($exportJson['extraOptions'] as $name => $option) {
self::updateExtraOption($quiz->getId(), $name, $option);
}
}
}
/**
* Replace a certain value for a certain key, in a multidimensional array
*/
function array_replace_only_for_key(&$array, $key, $needle, $haystack)
{
foreach ($array as $k => &$elem) {
if (is_array($elem)) {
array_replace_only_for_key($elem, $key, $needle, $haystack);
} else {
if ($k == $key && $elem == $needle) {
$elem = str_replace($elem, $needle, $haystack);
}
}
}
}
