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<?php
namespace app\controllers\admin;
use Registry;
use Render;
use app\models\cms\Course_model;
class Course_admin {
## -------------------------------------------------------------------------
##
## COURSE (category) METHODS
##
## -------------------------------------------------------------------------
/** breadcrumbs
* ---
* responds to ajax GET: /admin/api/categories
*/
public static function breadcrumbs()
{
$tree = proxy( // cache-get categories
[\app\models\cms\Course_model::class, 'category_tree'],
[], CACHE_ROOT_TTL
);
$breadcrumbs = proxy( // cache-get breadcrumbs
[\app\models\cms\Course_model::class, 'breadcrumbs'],
[$tree], CACHE_ROOT_TTL
);
Render::json($breadcrumbs); // send as json
}
/** add course
* ---
* @param void (get data from POST)
*/
public static function add_course()
{
// insert new category; id = new category id
$id = Registry::use('database')->query(
"INSERT INTO course (parent_id, label) VALUES (:parent, :label)",
[
':parent' => Registry::get('REQUEST')->POST['parent_id'],
':label' => Registry::get('REQUEST')->POST['label']
]
)->lastInsertID();
$cache = self::update_courses_cache(); // update category caches
return $cache['breadcrumbs']; // return
}
/** update course
* ---
* @param void (get data from POST)
*/
public static function update_course()
{
Registry::use('database')->query(
"UPDATE course SET parent_id = :parent, label = :label
WHERE id = :id",
[
':id' => Registry::get('REQUEST')->POST['id'],
':parent' => Registry::get('REQUEST')->POST['parent_id'],
':label' => Registry::get('REQUEST')->POST['label']
]
);
$cache = self::update_courses_cache();
return $cache['breadcrumbs'];
}
/** update courses cache
* --- -- -- - - -
* Shall run if anything changes to courses
*
* @param void
* @return (array): the two course caches
*/
public static function update_courses_cache()
{
$tree = proxy( // cache-get categories
[\app\models\cms\Course_model::class, 'category_tree'],
[], CACHE_ROOT_TTL, PROXY_IGNORE_CACHE
);
$breadcrumbs = proxy( // cache-get breadcrumbs
[\app\models\cms\Course_model::class, 'breadcrumbs'],
[$tree], CACHE_ROOT_TTL, PROXY_IGNORE_CACHE
);
return [
'tree' => $tree,
'breadcrumbs' => $breadcrumbs
];
}
## -------------------------------------------------------------------------
##
## FILE METHODS
##
## -------------------------------------------------------------------------
/** upload_file
* upload the file to the file system
*
* the method reads the POST and FILES array
* to retrieve all needed parametres
*
* + $_FILES[file]
* + $_POST[folder] : lesson's ID
* + $_POST[reference] : reference type
*/
public static function upload_file()
{
$post = Registry::get('REQUEST')->POST;
$files = Registry::get('REQUEST')->FILES;
// Checks before uploading the file
////////////////////////////////////////////////////////////////////////
// ** 1: file is upladed to temporary folder ---------------------------
if (! is_uploaded_file($files['file']['tmp_name'])) {
return ['success' => false]; // bye!
}
// ** 2: File belongs to the allowed MIME types ------------------------
$allowed_file_types = array(
'application/pdf',
'image/png', 'image/jpeg',
'application/msword', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
'application/vnd.ms-excel', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
);
// Recomended MIME type checking via mime_content_type():
$mime_type = mime_content_type($files['file']['tmp_name']);
if (! in_array($mime_type, $allowed_file_types)) { // File type NOT allowed ...
return ['success' => false]; // bye!
}
$file_name = $files['file']['name'];
$file_type = $files['file']['type']; // do not take it for granted
$file_size = $files['file']['size'];
$file_tmp = $files['file']['tmp_name'];
$bare_name = pathinfo($file_name, PATHINFO_FILENAME);
$file_ext = pathinfo($file_name, PATHINFO_EXTENSION);
// ** 3: filename or size checks may be added --------------------------
if ($file_name == "") {
return ['success' => false]; // bye!
}
// READY to finaly save/upload the file to CDN /////////////////////////
$folder = MEDIA_STORAGE_ROOT . $post['folder'];
if (!file_exists($folder)) { // create folder if not exists
mkdir($folder, 0757, true);
}
// print_r([
// 'dir' => $folder,
// 'file' => $bare_name,
// 'ext' => $file_ext,
// 'type' => $file_type
// ]); die();
$relative_filename = $post['folder']
.'/'
. strtolower(self::clear_file_name($bare_name) .'.'. $file_ext);
$store_filename = MEDIA_STORAGE_ROOT . $relative_filename;
if (move_uploaded_file($files["file"]["tmp_name"], $store_filename)) {
return [
'success' => true,
'path' => $store_filename,
'type' => $mime_type
];
} else { return ['success' => false]; }
}
/** clear_file_name
* replace greek characters and strip symbols
*/
private static function clear_file_name($str)
{
$el = mb_split( "ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρστυφχψωάέήίόύώϊϋς ", "");
$en = str_split("ABGDEZHUIKLMNJOPRSTYFXCVabgdezhuiklmnjoprstyfxcvaehioyviys-");
$strip = str_split("!@#$%^&*()+~`[]{};'/<>?=\"");
return str_replace($strip, '', str_replace($el, $en, $str));
}
/** define_media
*
* create a record in media table
*
* @param $data
* @return id (int): id of created media record
*/
public static function define_media($data)
{
$sql = "INSERT INTO wiki_media (`title`, `type`, `path`)
VALUES (:title, :mimetype, :filepath)";
$stmt = $this->pdo->prepare($sql);
$stmt->execute([
'title' => $data['title'],
'mimetype' => $data['type'],
'filepath' => $data['path']
]);
$inserted_id = $this->pdo->lastInsertId();
return $inserted_id;
}
}
|
