diff options
Diffstat (limited to 'public/app/controllers/cms')
| -rw-r--r-- | public/app/controllers/cms/Course.php | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/public/app/controllers/cms/Course.php b/public/app/controllers/cms/Course.php new file mode 100644 index 0000000..47eac5f --- /dev/null +++ b/public/app/controllers/cms/Course.php @@ -0,0 +1,252 @@ +<?php + +namespace app\controllers\cms; + +use Registry; +use Render; +use app\controllers\Auth; +use app\models\cms\Course_model; +use app\extends\Cache_service; + +class Course { + + + /** PERMITION + * ------------------------------------------------------------------------- + */ + + + /** is admin or permited + * + * shortcut method for checking access authorization + * + * returns true if user belogns to the admin group + * OR has the specified permition/privilege + * + * @param $privilege_id (int) + * + * NOTE: + * unlike the other authorization methods ... + * $privilege_id is NOT an array but a single privilege id + * + * @return true|false + */ + private static function is_admin_or_permited( $privilege_id ) + { + return ( + Auth::in_admin_group() + || Auth::hasPermition([ $privilege_id ]) + ); + } + + + + /** FILES + * ------------------------------------------------------------------------- + */ + + /** serve file by file_path + * (request is valid only for admin users) + * + * @param $file_path (string): relative file path + * GET @param type (string) : media-type of file + */ + public static function serve_file($file_path) + { + $file = self::get_file_attributes($file_path); + + // if user is authorized + if (self::is_admin_or_permited($file['privilege_id'])) { + + $media_type = Registry::get('REQUEST')->GET['type']; // get media-type + $real_path = MEDIA_STORAGE_ROOT . $file_path; // construct real path + + if (!file_exists($real_path)) { + Render::view('error/404'); + + } else { + Render::file($real_path, $media_type); + } + + } else { + Render::view('error/404', [ + 'error_code' => 403, + 'moto' => 'Forbidden', + 'message' => '' + ]); + } + } + + + /** get_file_attributes + * + * returns attributes of a file + * (medias are proxied for speed optimization) + * + * @param $path (string) : file path + * @return $file attributes --or-- false + */ + private static function get_file_attributes($path) + { + $medias = Cache_service::files_attributes(); + + foreach($medias as $key => $medi) { + + if ($medi['path'] == $path) { + + return $medi; + } + } + + return false; + } + + + + /** COURSES + * ------------------------------------------------------------------------- + */ + + /** course + * prepare and render the course view + * + * @param $id : course id + */ + public static function course($id) + { + $id = intval($id); // course id + + // collect all data needed for course view + // --- -- -- - - - + $cache = Cache_service::courses_struct(); + $tree = $cache['tree']; + $breadcrumbs = $cache['breadcrumbs']; + $lessons = Course_model::lessons_of_course(intval($id)); + + // find parent_ids of current category (to open the menu tree) + // --- + $course_path = []; + foreach($breadcrumbs[$id]['parents'] as $key => $parent) { + $course_path[] = intval($parent['id']); + } + $course_path[] = $id; + + // then Render + // --- -- -- - - - + Render::view('templates/course', [ + 'id' => $id, + 'title' => $breadcrumbs[ $id ]['rec']['label'], + 'categories' => $tree, + 'breadcrumbs' => $breadcrumbs, + 'lessons' => $lessons, + 'course_path' => $course_path, + // needed by footer + 'entity' => Cache_service::pages_list() + ]); + } + + + + /** LESSONS + * ------------------------------------------------------------------------ + */ + + + /** lesson + * + * check if user is authorized to view the content; + * if so, prepare and render the lesson view + * + * @param $id : lesson id + */ + public static function lesson($id) + { + $id = intval($id); // lesson id + + $lesson = Course_model::lesson($id); // get lesson + $course_id = $lesson['course_id']; // get course id + $pri_id = $lesson['privilege_id']; // privilege needed + + + if (self::is_admin_or_permited($pri_id)) { + + // collect all data needed for course view + // --- -- -- - - - + $cache = Cache_service::courses_struct(); + $tree = $cache['tree']; + $breadcrumbs = $cache['breadcrumbs']; + + // find parent_ids of current category (to open the menu tree) + // --- + $course_path = []; + foreach($breadcrumbs[$course_id]['parents'] as $key => $parent) { + $course_path[] = intval($parent['id']); + } + $course_path[] = intval($course_id); + + // NOTE: CRITICAL: + // do not pass Class::method directly to the eported variables + // $entity = Cache_service::pages_list(); + + // var_dump($entity); die(); + + // then Render + // --- -- -- - - - + Render::view('templates/lesson', [ + // main content + 'id' => $id, + 'course_id' => $course_id, + 'title' => $lesson['title'], + 'lesson' => $lesson, + // needed for side panel and breadcrunbs + 'categories' => $tree, + 'breadcrumbs' => $breadcrumbs, + 'course_path' => $course_path, + // needed by footer + 'entity' => Cache_service::pages_list() + ]); + + } else { // user is not authorized + Render::view('error/general', [ + 'title' => 'Δεν έχετε πρόσβαση', + 'message' => 'Θα πρέπει να αγοράσετε το πακέτο πρόσβασης ' + . $pri_id + .' για να δείτε το περιεχόμενο! + <br><br> + Αγόρασε τώρα το <button class="btn">πακέτο πρόσβασης '. $pri_id .'</button>' + ]); + } + + } + + + /** lesson + * + * check if user is authorized to view the content; + * if so, prepare and render the lesson view + * + * @param $id : lesson id + */ + public static function page($id) + { + $id = intval($id); // lesson id + + $pages = Cache_service::pages_list(); + $page = $pages[$id]; + + // then Render + // --- -- -- - - - + Render::view('templates/page', [ + // main content + 'id' => $id, + 'page' => $page, + // needed by footer + 'entity' => $pages + ]); + + } + + + + +}
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