send invitation(s) form is ready

16 files changed, 154 insertions, 978 deletions

diff --git a/public/app/config/setup_application.php b/public/app/config/setup_application.php
index 2c8b756..45c6712 100644
--- a/public/app/config/setup_application.php
+++ b/public/app/config/setup_application.php
@@ -206,9 +206,13 @@ define('GENDERED_ARTICLE',[         // gendered (grammar) articles
 
 
 
+## -----------------------------------------------------------------------------
+##
+##                            t h e   f o r m s
+##
+## -----------------------------------------------------------------------------
+
 
-// the forms ///////////////////////////////////////////////////////////////////
-// -----------------------------------------------------------------------------
 
 // registration/activation form (from invitation)
 // ---
@@ -295,7 +299,8 @@ define('REGISTRATION_FORM', [
 ]);
 
 
-
+// (edit) user properties
+// ---
 define('USER_PROPERTIES_FORM', [
     'defaults' => [
         'outer_class' => 'col-12',
@@ -365,7 +370,8 @@ define('USER_PROPERTIES_FORM', [
 ]);
 
 
-
+// (re-)set password
+// ---
 define('SET_PASSWORD_FORM', [
     'defaults' => [
         'outer_class' => 'col-12',
@@ -395,6 +401,7 @@ define('SET_PASSWORD_FORM', [
     ]
 ]);
 
+
 // Application (common request) form
 // ---
 define('APPLICATION_FORM', [
@@ -488,9 +495,9 @@ define('APPLICATION_FORM', [
     ]
 ]);
 
+
 // penalty form
 // ---
-
 define('PENALTY_FORM', [
   'defaults' => [
       'outer_class' => 'col-12',
diff --git a/public/app/controllers/Office.php b/public/app/controllers/Office.php
index c67249a..7a542eb 100644
--- a/public/app/controllers/Office.php
+++ b/public/app/controllers/Office.php
@@ -23,7 +23,6 @@ class Office {
     ## PERMITION
     ## -------------------------------------------------------------------------
 
-
     /** is admin or permited
      * 
      * shortcut method for checking access authorization
@@ -52,7 +51,6 @@ class Office {
     ## SERVE FILE
     ## -------------------------------------------------------------------------
 
-
     /** serve file by file_path
      * (request is valid only for admin users)
      * 
@@ -116,7 +114,6 @@ class Office {
     ## secretarial support / serve forms for teachers' requests and applications
     ## -------------------------------------------------------------------------
 
-
     /** request any (empty/new) petition form
      * 
      * The method acts as an authorization checker and internal router
@@ -268,7 +265,6 @@ class Office {
     ## handle submits of forms
     ## -------------------------------------------------------------------------
 
-
     /** add_petition
      * 
      * handle an add petition request (petition form is submited)
@@ -309,7 +305,6 @@ class Office {
     ## LIST PETITIONS
     ## -------------------------------------------------------------------------
 
-
     public static function user_petitions()
     {
         $manager = new App_manager();       // use APP Manager
@@ -326,7 +321,6 @@ class Office {
     }
 
 
-
     public static function all_petitions()
     {
         if (Auth::in_admin_group()) {
@@ -338,7 +332,6 @@ class Office {
     }
 
 
-
     public static function petition_copy($sign)
     {
         if (Auth::in_admin_group()) {
@@ -359,6 +352,7 @@ class Office {
 
 
 
+
     ## TICKET METHODS (create, remove)
     ## tickets eliminate CSRF attacks
     ## -------------------------------------------------------------------------
@@ -415,7 +409,6 @@ class Office {
 
 
 
-
     ## ADMIN METHODS (insert, updated etc.)
     ## -------------------------------------------------------------------------
 
diff --git a/public/app/routes/user.php b/public/app/routes/user.php
index e43eaa9..67032e6 100644
--- a/public/app/routes/user.php
+++ b/public/app/routes/user.php
@@ -187,10 +187,15 @@ if (Auth::in_admin_group()) {
         Office::set_protocol();
     }, 'post');
 
+
     // invite user(s)
     // --- -- -- - - -
     Route::add('/admin/invite', function() {
-        Render::view('admin/invite');
+        $teachers = Registry::use('database')->runQuery(
+            "SELECT id, concat(last_name, ' ', first_name) as TeacherName
+            FROM user ORDER BY TeacherName", []
+        );
+        Render::view('templates/invite', ['teachers' => $teachers]);
     });
 }
 
diff --git a/public/app/views/components/own_petitions.php b/public/app/views/components/own_petitions.php
index 41e59b4..c4f84fe 100644
--- a/public/app/views/components/own_petitions.php
+++ b/public/app/views/components/own_petitions.php
@@ -2,7 +2,7 @@
     <!-- title bar -->
     <div class="title-bar">
         <div class="row">
-            <h5 class="col-md-10">Διαχείριση Αιτήσεων και Δοικητικών Εγγράφων</h5>
+            <h4 class="col-md-10">Διαχείριση Αιτήσεων και Δοικητικών Εγγράφων</h4>
             <div class="col-md-2">
                 <a type="button" class="btn btn-sm btn-back2panel pull-right" href="/panel">
                     Επιστροφή
diff --git a/public/app/views/templates/invite.php b/public/app/views/templates/invite.php
new file mode 100644
index 0000000..637697f
--- /dev/null
+++ b/public/app/views/templates/invite.php
@@ -0,0 +1,133 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <title><?=SITE_TITLE?> - Είσοδος Χρήστη</title>
+
+    <?php   // header includes
+        ////////////////////////////////////////////////////////////////////////
+        Render::view('components/header_includes');
+    ?>
+<style>
+:root {   /* login-form overides */
+    --form-content-font-size: 1rem;
+    --form-input-height: 34px;
+    --select2-arrow-top: 1px;
+}
+</style>
+</head>
+<body class="office central-form">
+
+  <div class='container'>
+    <div class='content max420px'>
+
+
+      <div class="content-form">
+        <h4>
+            Αποστολή προσκλήσεων
+            <span>
+              <a type="button" class="btn btn-sm btn-back2panel pull-right" href="/panel">
+                Επιστροφή
+              </a>
+            </span>
+        </h4>
+        <hr />
+
+        <form method="post">
+
+    <div class='row'>
+        <div class='form-group '>
+            <label for='members'>Μέλη *</label>
+            
+            <select id='members' class='form-select form-select-sm' name='members[]' multiple='multiple' style='width:100%'>
+                <?php foreach($teachers as $key => $item) :?>
+                    <option value="<?=$item['id']?>"><?=$item['TeacherName']?></option>
+                <?php endforeach; ?>
+            </select>
+        </div>
+    </div>
+
+
+            <br />
+
+            <div class="row justify-content-center">
+              <div class="col-6">
+                <button type="submit" class="btn btn-primary btn-sm col-12">Σύνδεση</button>
+              </div>
+            </div>
+            
+        </form>
+      </div>
+
+      <div class="info">
+        <!--
+        <p>Αν ξεχάσατε τον κωδικό πρόσβασης μπορείτε να δημιουργήσετε ένα νέο (υπο κατασκευή).</p>
+        -->
+        <p>
+          Εαν δικαιούστε αλλά δεν έχετε πρόσβαση στο site, παρακαλούμε επικοινωνήστε
+          με τη διεύθυνση του σχολείου προκειμένου να σας αποσταλεί σχετική πρόσκληση.
+        </p>
+        <p>
+          Ο ιστότοπος χρησιμοποιεί cookies τα οποία έχουν αποκλειστικά λειτουργικό ρόλο.
+          Η χρήση των υπηρεσιών του site συνεπάγεται την αποδοχή διατήρησης αυτών των cookies.
+        </p>
+      </div>
+
+    </div>
+  </div>
+
+</body>
+
+<?php   // include select2 supplementary functions
+    ////////////////////////////////////////////////////////////////////////////
+    Render::view('js/select2-supplementary');   
+?>
+
+<script>
+
+$(document).ready(function() {
+
+    // initialize select2 control
+    var members = $('#members');
+    members.select2({ width: '100%' });
+    members.val(null).trigger('change');       
+
+
+    // When form is submited
+    // -------------------------------------------------------------------------
+
+    $('.content form').submit( event => {
+        event.preventDefault();
+
+
+        // prepare data to POST
+        var data = {
+            email: $('input[name=email]').val(),
+            password: $('input[name=password]').val()
+        };
+
+        // select action url (add or update)
+        var request = '/account/check-login';
+
+        // send POST request
+        $.post(request, data)
+        .done(function( data ) {
+            if (data.status !== false) {
+                window.location.href = data.status.goto;
+
+            } else {
+              alert('Τα στοιχεία πρόσβασης που δώσατε είναι λάθος. Παρακαλώ προσπαθήστε ξανά.');
+            }
+        });
+
+
+    });
+
+});
+</script>
+
+<?php // credits
+  //////////////////////////////////////////////////////////////////////////////
+  Render::view('js/credits');
+?>
+</html>
diff --git a/public/app/views/user/panel.php b/public/app/views/user/panel.php
index 9ac7908..304237b 100644
--- a/public/app/views/user/panel.php
+++ b/public/app/views/user/panel.php
@@ -43,60 +43,7 @@
     </div>
   </div>
 
-
-<?php if (($is_admin) &&  ($content == 'admin_petitions')) : ?>
-
-  <!-- MODAL for set protocol number -->
-  <div class="modal fade" id="managePetition" aria-labelledby="myModalLabel" aria-hidden="true">
-      <div class="modal-dialog modal-lg" role="document">
-          <div class="modal-content">
-          
-          <form method="post" action="">
-
-              <div class="modal-header">
-                  <h4 class="modal-title" id="myModalLabel">Ενημέρωση αριθμού πρωτόκολλου</h4>
-                  <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
-              </div><!-- /modal-header -->
-
-              <!-- modal-body -->
-              <div class="modal-body">
-
-                  <div class="row form-group">
-                      <label class="control-label col-sm-12" for="protocol">Τίτλος</label>
-                      <div class="col-sm-12">
-                          <input class="form-control form-control-sm" type="text" name="protocol" value="" required="">
-                      </div>
-                  </div>
-
-                  <div class="row form-group"><!-- hiddens -->
-                      <input type="hidden" name="id" value="0"><!-- petition-id -->
-                      <input type="hidden" name="signature" value=""><!-- signature -->
-                  </div>
-                          
-              </div><!-- /modal body -->
-
-              <div class="modal-footer">
-                  <div class="row" style="width: 50%;">
-                      <div class="form-actions">
-                          <div class="col-4">
-                              <button type="button" class="btn btn-default js-modal-close col-sm-12" data-bs-dismiss="modal">Κλείσιμο</button>
-                          </div>
-                          <div class="col-8">
-                              <button class="btn btn-success col-sm-12" type="submit">Καταχώριση</button>
-                          </div>
-                      </div>
-                  </div>
-              </div><!-- /modal-footer -->
-
-          </form><!-- /form -->
-
-          </div>
-      </div>
-  </div>
-
-<?php endif; ?>
-
-  </body>
+</body>
 
 <script src="/assets/js/panel/<?=$content?>.js"></script>
 
diff --git a/public/app/views/xx--admin/admin-menu.php b/public/app/views/xx--admin/admin-menu.php
deleted file mode 100644
index 52e8522..0000000
--- a/public/app/views/xx--admin/admin-menu.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-/** admin panel
- * -----------------------------------------------------------------------------
- * 
- * imported variables:
- * ---
- * @param $action (string): array of articles
- * @param $id (int): id of entity (when editing entity) | 0: new entity
- * 
- * example call:
- * ---
- * Render::template("sections/admin_panel.php",[
- *      'action' => 'posts',
- *      'id' => 4
- * ])
- * -----------------------------------------------------------------------------
- */
-
-$admin_options = [
-    'panel' => 'Διαχείριση',
-    'edit_lesson' => 'Νέο Μάθημα',
-    'lessons' => 'Μαθήματα',
-    'categories' => 'Κεφάλαια',
-    'pages' => 'Σελίδες',
-    'files' => 'Αρχεία',
-    'privileges' => 'Πρόσβαση',
-    'users' => 'Χρήστες'
-];
-?>
-
-<div class="top-bar">
-
-    <?php foreach($admin_options as $opt => $label) : ?>
-
-        <?php if (($opt == $action) & (!$id)) : ?> 
-            <span class="btn btn-primary selected"><?=$label?></span>
-
-        <?php else : ?>
-            <a href="/admin/<?= $opt ?>" class="btn"><?= $label ?></a>
-
-        <?php endif; ?>
-
-    <?php endforeach ?>
-
-    <a href="/logout" class="btn">Logout</a>
-
-</div>
\ No newline at end of file
diff --git a/public/app/views/xx--admin/categories.php b/public/app/views/xx--admin/categories.php
deleted file mode 100644
index 26fd5a2..0000000
--- a/public/app/views/xx--admin/categories.php
+++ /dev/null
@@ -1,91 +0,0 @@
- <!-- title bar -->
- <div class="title-bar">
-    <div><h5>Διαχείριση Κατηγοριών</h5></div>
-    <div>
-        <!-- Button trigger modal -->
-        <button type="button" class="btn pull-right"
-            data-bs-toggle="modal" data-bs-target="#manageCategory" data-id="0">
-            <i class="fas fa-plus"></i> &nbsp; Νέο Κεφάλαιο
-        </button>
-    </div>
-</div>
-
-<div class="manage">
-    <div class="row">
-        <div class="col-md-12">
-
-            <div id="categories-tree">
-
-                <table id="dt-categories" class="table table-responsive dt-table" style="width:100%">
-                    <thead>
-                        <th class="dt-breadcrumb">Κατηγορία/Κεφάλαιο</th>
-                        <th class="dt-actions"></th>
-                    </thead>
-                </table>
-
-            </div>
-
-
-        </div>
-    </div>
-</div><!-- /manage -->
-
-
-
-<!-- MODAL for new/edit category -->
-<!-- NOTE: tabindex="-1" removed, ref:https://github.com/select2/select2-bootstrap-theme/issues/41 -->
-<div class="modal fade" id="manageCategory" aria-labelledby="myModalLabel" aria-hidden="true">
-    <div class="modal-dialog modal-lg" role="document">
-        <div class="modal-content">
-        
-        <form method="post" action="">
-
-            <div class="modal-header">
-                <h4 class="modal-title" id="myModalLabel">Modal title</h4>
-                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
-            </div><!-- /modal-header -->
-
-            <!-- modal-body -->
-            <div class="modal-body">
-
-                <!-- form fields -->
-                    
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="label">Όνομα κατηγορίας</label>
-                    <div class="col-sm-12">
-                        <input class="form-control form-control-sm" type="text" name="label" value="" required="">
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="parent_id">Γονική Κατηγορία</label>
-                    <div class="col-sm-12">
-                        <select class="form-control form-control-sm form-select form-select-sm" id="parent_id" name="parent_id" required></select>
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <input type="hidden" name="id" value="0"><!-- action = (0) ? 'new' : 'edit' -->
-                </div>
-                        
-
-            </div><!-- /modal body -->
-
-            <div class="modal-footer">
-                <div class="row" style="width: 50%;">
-                    <div class="form-actions">
-                        <div class="col-4">
-                            <button type="button" class="btn btn-default js-modal-close col-sm-12" data-bs-dismiss="modal">Κλείσιμο</button>
-                        </div>
-                        <div class="col-8">
-                            <button class="btn btn-success col-sm-12" type="submit">Καταχώριση</button>
-                        </div>
-                    </div>
-                </div>
-            </div><!-- /modal-footer -->
-
-        </form><!-- /form -->
-
-        </div>
-    </div>
-</div>
diff --git a/public/app/views/xx--admin/edit_lesson.php b/public/app/views/xx--admin/edit_lesson.php
deleted file mode 100644
index ef875b4..0000000
--- a/public/app/views/xx--admin/edit_lesson.php
+++ /dev/null
@@ -1,159 +0,0 @@
-<?php 
-    // some labels (if editing new or existing record)
-    // --- -- -- - - -
-    if ($id == 0) {
-        $action_title = "Δημιουργία Μαθήματος";
-        $action_button = "Δημιουργία";
-
-    } else {
-        $action_title = "Επεξεργασία Μαθήματος";
-        $action_button = "Αποθήκευση Αλλαγών";
-    }
-?>
-
-<!-- title bar -->
-<div class="title-bar">
-    <div><h5><?=$action_title?></h5></div>
-    <div>
-        <button type="button" class="btn pull-right"
-            data-bs-toggle="modal" data-bs-target="#editorModal" data-action="preview">
-            <i class="fas fa-search"></i> &nbsp; Προεπισκόπηση
-        </button>
-    </div>
-</div>
-
-<!-- manage -->
-<div class="manage edit-post">
-    <form>
-        <div class="row">
-
-        
-            <div class="col col-8">
-        
-                <!-- id (hidden) -->
-                <input type="hidden" name="id" value="0"><!-- action = (0) ? 'new' : 'edit' -->
-
-                <!--
-                <div class="row form-group">
-                    <input type="date" name="date" value="" readonly="">
-                </div>
-                -->
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="title">Τίτλος</label>
-                    <div class="col-sm-12">
-                        <input class="form-control form-control-sm" type="text" name="title" value="" required="">
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="category_id">Κεφάλαιο</label>
-                    <div class="col-sm-12">
-                        <select class="form-control form-control-sm" id="course_id" name="course_id" required></select>
-                    </div>
-                </div>
-
-                <!-- Post body -->
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="body">Κείμενο</label>
-                    <div class="col-sm-12">
-                        <textarea class="form-control form-control-sm" type="text" name="body" value="" required=""></textarea>
-                    </div>
-                </div>
-
-            </div>
-
-            <div class="col">
-
-                <div class="row form-group">
-                <label class="control-label col-sm-12" for="status">Κατάσταση</label>
-                    <div class="col-sm-12">
-                        <select class="form-control form-control-sm form-select form-select-sm" name="status" onchange="this.dataset.chosen = this.value;">
-                            <option value="0">Αδημοσίευτο</option>
-                            <option value="one">ΔΗΜΟΣΙΕΥΜΕΝΟ</option>
-                        </select>
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="privilege_id">Επίπεδο Πρόσβασης</label>
-                    <div class="col-sm-12">
-                        <select class="form-control form-control-sm form-select form-select-sm" id="privilege_id" name="privilege_id">
-                        </select>
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="intro">Σύντομη Περιγραφή</label>
-                    <div class="col-sm-12">
-                        <textarea class="form-control form-control-sm" type="text" name="intro" value=""></textarea>
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="media">Αρχεία</label>
-                    <div class="col-sm-12 post-media">
-
-                        <!-- Button trigger modal -->
-                        <button type="button" class="btn btn-sm btn-success pull-right over-bar"
-                            data-bs-toggle="modal" data-bs-target="#editorModal" data-action="upload_file">
-                            <i class="fas fa-plus"></i> &nbsp; Προσθήκη
-                        </button>
-
-                        <ul id="files_list">
-                        </ul>
-
-                    </div>
-                </div>
-
-                <?php if ($id != 0) : ?>
-                <div class="row form-group">
-                    <label class="control-label col-sm-12">Πληροφορίες</label>
-                    <div class="col-sm-12" id="post-info">
-                    </div>
-                </div>
-                <?php endif; ?>
-
-            </div>
-
-        </div>
-
-        <div class="row">
-
-            <div class="col">
-                <hr/>
-                <!-- close | submit buttons -->
-
-                <div class="form-actions row justify-content-md-center">
-
-                    <div class="col-3">
-                        <button type="button" id="go-back" class="btn btn-light col-sm-12">
-                            Επιστροφή
-                        </button>
-                    </div>
-
-                    <div class="col-4">
-                        <button class="btn btn-primary col-sm-12" type="submit">
-                        <?=$action_button?>
-                        </button>
-                    </div>
-
-                </div>
-
-            </div>
-
-        </form>
-
-    </div>
-</div><!-- /manage -->
-
-
-<!-- MODAL for file uploads and preview  -->
-<div class="modal fade" id="editorModal" aria-labelledby="myModalLabel" aria-hidden="true">
-    <div class="modal-dialog modal-lg" role="document">
-        <div class="modal-content">
-                <!-- content will be dynamic -->
-        </div>
-    </div>
-</div>
-                
diff --git a/public/app/views/xx--admin/edit_page.php b/public/app/views/xx--admin/edit_page.php
deleted file mode 100644
index 46c47bc..0000000
--- a/public/app/views/xx--admin/edit_page.php
+++ /dev/null
@@ -1,139 +0,0 @@
-<?php 
-    // some labels (if editing new or existing record)
-    // --- -- -- - - -
-    if ($id == 0) {
-        $action_title = "Δημιουργία Σελίδας";
-        $action_button = "Δημιουργία";
-
-    } else {
-        $action_title = "Επεξεργασία Σελίδας";
-        $action_button = "Αποθήκευση Αλλαγών";
-    }
-?>
-
-<!-- title bar -->
-<div class="title-bar">
-    <div><h5><?=$action_title?></h5></div>
-    <div>
-        <button type="button" class="btn pull-right"
-            data-bs-toggle="modal" data-bs-target="#editorModal" data-action="preview">
-            <i class="fas fa-search"></i> &nbsp; Προεπισκόπηση
-        </button>
-    </div>
-</div>
-
-<!-- manage -->
-<div class="manage edit-page">
-    <form>
-        <div class="row">
-
-        
-            <div class="col col-8">
-        
-                <!-- id (hidden) -->
-                <input type="hidden" name="id" value="0"><!-- action = (0) ? 'new' : 'edit' -->
-
-                <!--
-                <div class="row form-group">
-                    <input type="date" name="date" value="" readonly="">
-                </div>
-                -->
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="title">Τίτλος</label>
-                    <div class="col-sm-12">
-                        <input class="form-control form-control-sm" type="text" name="title" value="" required="">
-                    </div>
-                </div>
-
-                <!-- Post body -->
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="body">Κείμενο</label>
-                    <div class="col-sm-12">
-                        <textarea class="form-control form-control-sm" type="text" name="body" value="" required=""></textarea>
-                    </div>
-                </div>
-
-            </div>
-
-            <div class="col">
-
-                <div class="row form-group">
-                <label class="control-label col-sm-12" for="status">Κατάσταση</label>
-                    <div class="col-sm-12">
-                        <select class="form-control form-control-sm form-select form-select-sm" name="status" onchange="this.dataset.chosen = this.value;">
-                            <option value="0">Αδημοσίευτο</option>
-                            <option value="one">ΔΗΜΟΣΙΕΥΜΕΝΟ</option>
-                        </select>
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="media">Αρχεία</label>
-                    <div class="col-sm-12 post-media">
-
-                        <!-- Button trigger modal -->
-                        <button type="button" class="btn btn-sm btn-success pull-right over-bar"
-                            data-bs-toggle="modal" data-bs-target="#editorModal" data-action="upload_file">
-                            <i class="fas fa-plus"></i> &nbsp; Προσθήκη
-                        </button>
-
-                        <ul id="files_list">
-                        </ul>
-
-                    </div>
-                </div>
-
-                <?php if ($id != 0) : ?>
-                    <!--
-                <div class="row form-group">
-                    <label class="control-label col-sm-12">Πληροφορίες</label>
-                    <div class="col-sm-12" id="post-info">
-                    </div>
-                </div>
-                    -->
-                <?php endif; ?>
-
-            </div>
-
-        </div>
-
-        <div class="row">
-
-            <div class="col">
-                <hr/>
-                <!-- close | submit buttons -->
-
-                <div class="form-actions row justify-content-md-center">
-
-                    <div class="col-3">
-                        <button type="button" id="go-back" class="btn btn-light col-sm-12">
-                            Επιστροφή
-                        </button>
-                    </div>
-
-                    <div class="col-4">
-                        <button class="btn btn-primary col-sm-12" type="submit">
-                        <?=$action_button?>
-                        </button>
-                    </div>
-
-                </div>
-
-            </div>
-
-        </form>
-
-    </div>
-</div><!-- /manage -->
-
-
-<!-- MODAL for file uploads and preview  -->
-<div class="modal fade" id="editorModal" aria-labelledby="myModalLabel" aria-hidden="true">
-    <div class="modal-dialog modal-lg" role="document">
-        <div class="modal-content">
-                <!-- content will be dynamic -->
-        </div>
-    </div>
-</div>
-                
diff --git a/public/app/views/xx--admin/files.php b/public/app/views/xx--admin/files.php
deleted file mode 100644
index c6d2771..0000000
--- a/public/app/views/xx--admin/files.php
+++ /dev/null
@@ -1,96 +0,0 @@
- <!-- title bar -->
- <div class="title-bar">
-    <div><h5>Διαχείριση Επιπέδων Πρόσβασης</h5></div>
-    <div>
-        <!-- Button trigger modal 
-          <button type="button" class="btn pull-right"
-              data-bs-toggle="modal" data-bs-target="#managePrivileges" data-id="0">
-              <i class="fas fa-plus"></i> &nbsp; Νέο Επίπεδο
-          </button>
-        -->
-    </div>
-</div>
-
-<div class="manage">
-    <div class="row">
-        <div class="col-md-12">
-
-            <div id="files">
-
-                <table id="dt-files" class="table table-responsive dt-table" style="width:100%">
-                    <thead>
-                        <th class="dt-id">α/α</th>
-                        <th class="dt-label">Περιγραφή</th>
-                        <th class="dt-path">Διαδρομή</th>
-                        <th class="dt-type">Media-Type</th>
-                        <th class="dt-privilege">Πρόσβαση</th>
-                        <th class="dt-actions"></th>
-                    </thead>
-                </table>
-
-            </div>
-
-
-        </div>
-    </div>
-</div><!-- /manage -->
-
-
-
-<!-- MODAL for new/edit category -->
-<!-- NOTE: tabindex="-1" removed, ref:https://github.com/select2/select2-bootstrap-theme/issues/41 -->
-<div class="modal fade" id="manageFiles" aria-labelledby="myModalLabel" aria-hidden="true">
-    <div class="modal-dialog modal-lg" role="document">
-        <div class="modal-content">
-        
-        <form method="post" action="">
-
-            <div class="modal-header">
-                <h4 class="modal-title" id="myModalLabel">Πρόσβαση αρχείου</h4>
-                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
-            </div><!-- /modal-header -->
-
-            <!-- modal-body -->
-            <div class="modal-body">
-
-                <!-- form fields -->
-                    
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="label">Κατηγορία Επιπέδου Πρόσβασης</label>
-                    <div class="col-sm-12">
-                        <input class="form-control form-control-sm" type="text" name="label" value="" required="">
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="included_id">Κατηγορία Επιπέδου Πρόσβασης</label>
-                    <div class="col-sm-12">
-                        <select class="form-control form-control-sm form-select form-select-sm" id="privilege_id" name="privilege_id" required></select>
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <input type="hidden" name="id" value="0"><!-- action = (0) ? 'new' : 'edit' -->
-                </div>
-                        
-
-            </div><!-- /modal body -->
-
-            <div class="modal-footer">
-                <div class="row form-actions">
-
-                    <div class="col">
-                        <button type="button" class="btn btn-default js-modal-close col-sm-12" data-bs-dismiss="modal">Κλείσιμο</button>
-                    </div>
-                    <div class="col">
-                        <button class="btn btn-success col-sm-12" type="submit">Καταχώριση</button>
-                    </div>
-
-                </div>
-            </div><!-- /modal-footer -->
-
-        </form><!-- /form -->
-
-        </div>
-    </div>
-</div>
diff --git a/public/app/views/xx--admin/lessons.php b/public/app/views/xx--admin/lessons.php
deleted file mode 100644
index d1cd3ae..0000000
--- a/public/app/views/xx--admin/lessons.php
+++ /dev/null
@@ -1,126 +0,0 @@
- <!-- title bar -->
- <div class="title-bar">
-    <div><h5>Διαχείριση Μαθημάτων</h5></div>
-    <div>
-        <!-- Button trigger modal -->
-        <a type="button" class="btn pull-right" href="/admin/edit_lesson">
-            <i class="fas fa-plus"></i> &nbsp; Νέο Μάθημα
-        </a>
-    </div>
-</div>
-
-<div class="manage">
-    <div class="row">
-        <div class="col-md-12">
-
-            <div id="lessons">
-
-                <table id="dt-lessons" class="table table-responsive dt-table" style="width:100%">
-                    <thead>
-                        <th class="dt-id">α/α</th>
-                        <th class="dt-title">Τίτλος</th>
-                        <th class="dt-course">Κεφάλαιο</th>
-                        <th class="dt-privileges">Πρόσβαση</th>
-                        <th class="dt-actions"></th>
-                    </thead>
-                </table>
-
-            </div>
-
-        </div>
-    </div>
-</div><!-- /manage -->
-
-
-
-<!-- MODAL for new/edit category -->
-<!-- NOTE: tabindex="-1" removed, ref:https://github.com/select2/select2-bootstrap-theme/issues/41 -->
-<div class="modal fade" id="manageLessons" aria-labelledby="myModalLabel" aria-hidden="true">
-    <div class="modal-dialog modal-lg" role="document">
-        <div class="modal-content">
-        
-        <form method="post" action="">
-
-            <div class="modal-header">
-                <h4 class="modal-title" id="myModalLabel">Παράμετροι Μαθήματος</h4>
-                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
-            </div><!-- /modal-header -->
-
-            <!-- modal-body -->
-            <div class="modal-body">
-
-                <!-- form fields -->
-                    
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="label">Τίτλος</label>
-                    <div class="col-sm-12">
-                        <input class="form-control form-control-sm" type="text" name="title" value="" required="">
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="course_id">Κεφάλαιο</label>
-                    <div class="col-sm-12">
-                        <select class="form-control form-control-sm form-select form-select-sm" id="course_id" name="course_id" required></select>
-                    </div>
-                </div>
-
-                <!-- one line, two fields (privilege, status) -->
-                <div class="row">
-                    <div class="col-md-8">
-
-            <!-- privilege level -->
-            <div class="row form-group">
-                <label class="control-label col-sm-12" for="privilege_id">Επίπεδο Πρόσβασης</label>
-                <div class="col-sm-12">
-                    <select class="form-control form-control-sm form-select form-select-sm" id="privilege_id" name="privilege_id">
-                    </select>
-                </div>
-            </div>
-
-                    </div>
-                    <div class="col-md-4">
-
-            <!-- status: published|unpublished -->
-            <div class="row form-group">
-                <label class="control-label col-sm-12" for="status">Κατάσταση</label>
-                <div class="col-sm-12">
-                    <select class="form-control form-control-sm form-select form-select-sm" name="status" onchange="this.dataset.chosen = this.value;">
-                        <option value="0">Αδημοσίευτο</option>
-                        <option value="one">ΔΗΜΟΣΙΕΥΜΕΝΟ</option>
-                    </select>
-                </div>
-            </div>
-
-
-                    </div>
-                </div>
-
-
-
-
-                <div class="row form-group">
-                    <input type="hidden" name="id" value="0"><!-- lesson-id -->
-                </div>
-                        
-
-            </div><!-- /modal body -->
-
-            <div class="modal-footer">
-                <div class="row" style="width: 50%;">
-                    <div class="form-actions">
-                        <div class="col-4">
-                            <button type="button" class="btn btn-default js-modal-close col-sm-12" data-bs-dismiss="modal">Κλείσιμο</button>
-                        </div>
-                        <div class="col-8">
-                            <button class="btn btn-success col-sm-12" type="submit">Καταχώριση</button>
-                        </div>
-                    </div>
-                </div>
-            </div><!-- /modal-footer -->
-
-        </form><!-- /form -->
-
-        </div>
-    </div>
-</div>
diff --git a/public/app/views/xx--admin/pages.php b/public/app/views/xx--admin/pages.php
deleted file mode 100644
index dd8f954..0000000
--- a/public/app/views/xx--admin/pages.php
+++ /dev/null
@@ -1,109 +0,0 @@
- <!-- title bar -->
- <div class="title-bar">
-    <div><h5>Διαχείριση Μαθημάτων</h5></div>
-    <div>
-        <!-- Button trigger modal -->
-        <a type="button" class="btn pull-right" href="/admin/edit_page">
-            <i class="fas fa-plus"></i> &nbsp; Νέα Σελίδα
-        </a>
-    </div>
-</div>
-
-<div class="manage">
-    <div class="row">
-        <div class="col-md-12">
-
-            <div id="pages">
-
-                <table id="dt-pages" class="table table-responsive dt-table" style="width:100%">
-                    <thead>
-                        <th class="dt-id">α/α</th>
-                        <th class="dt-title">Τίτλος</th>
-                        <th class="dt-actions"></th>
-                    </thead>
-                </table>
-
-            </div>
-
-        </div>
-    </div>
-</div><!-- /manage -->
-
-
-
-<!-- MODAL for new/edit category -->
-<!-- NOTE: tabindex="-1" removed, ref:https://github.com/select2/select2-bootstrap-theme/issues/41 -->
-<div class="modal fade" id="managePages" aria-labelledby="myModalLabel" aria-hidden="true">
-    <div class="modal-dialog modal-lg" role="document">
-        <div class="modal-content">
-        
-        <form method="post" action="">
-
-            <div class="modal-header">
-                <h4 class="modal-title" id="myModalLabel">Παράμετροι Μαθήματος</h4>
-                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
-            </div><!-- /modal-header -->
-
-            <!-- modal-body -->
-            <div class="modal-body">
-
-                <!-- form fields -->
-                    
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="label">Τίτλος</label>
-                    <div class="col-sm-12">
-                        <input class="form-control form-control-sm" type="text" name="title" value="" required="">
-                    </div>
-                </div>
-
-
-                <!-- one line / two parts; status: pull right -->
-                <div class="row">
-                    <div class="col-md-8">
-                        &nbsp<!-- nothing -->
-                    </div>
-                    <div class="col-md-4">
-
-            <!-- status: published|unpublished -->
-            <div class="row form-group">
-                <label class="control-label col-sm-12" for="status">Κατάσταση</label>
-                <div class="col-sm-12">
-                    <select class="form-control form-control-sm form-select form-select-sm" name="status" onchange="this.dataset.chosen = this.value;">
-                        <option value="0">Αδημοσίευτο</option>
-                        <option value="one">ΔΗΜΟΣΙΕΥΜΕΝΟ</option>
-                    </select>
-                </div>
-            </div>
-
-
-                    </div>
-                </div>
-
-
-
-
-                <div class="row form-group">
-                    <input type="hidden" name="id" value="0"><!-- page-id -->
-                </div>
-                        
-
-            </div><!-- /modal body -->
-
-            <div class="modal-footer">
-                <div class="row" style="width: 50%;">
-                    <div class="form-actions">
-                        <div class="col-4">
-                            <button type="button" class="btn btn-default js-modal-close col-sm-12" data-bs-dismiss="modal">Κλείσιμο</button>
-                        </div>
-                        <div class="col-8">
-                            <button class="btn btn-success col-sm-12" type="submit">Καταχώριση</button>
-                        </div>
-                    </div>
-                </div>
-            </div><!-- /modal-footer -->
-
-        </form><!-- /form -->
-
-        </div>
-    </div>
-</div>
diff --git a/public/app/views/xx--admin/panel.php b/public/app/views/xx--admin/panel.php
deleted file mode 100644
index 59b8cba..0000000
--- a/public/app/views/xx--admin/panel.php
+++ /dev/null
@@ -1,4 +0,0 @@
-<br/>
-<br/>
-<br/>
-<h4>Admin panel</h4>
\ No newline at end of file
diff --git a/public/app/views/xx--admin/privileges.php b/public/app/views/xx--admin/privileges.php
deleted file mode 100644
index 587c363..0000000
--- a/public/app/views/xx--admin/privileges.php
+++ /dev/null
@@ -1,93 +0,0 @@
- <!-- title bar -->
- <div class="title-bar">
-    <div><h5>Διαχείριση Επιπέδων Πρόσβασης</h5></div>
-    <div>
-        <!-- Button trigger modal -->
-        <button type="button" class="btn pull-right"
-            data-bs-toggle="modal" data-bs-target="#managePrivileges" data-id="0">
-            <i class="fas fa-plus"></i> &nbsp; Νέο Επίπεδο
-        </button>
-    </div>
-</div>
-
-<div class="manage">
-    <div class="row">
-        <div class="col-md-12">
-
-            <div id="categories-tree">
-
-                <table id="dt-privileges" class="table table-responsive dt-table" style="width:100%">
-                    <thead>
-                        <th class="dt-id">Κωδικός</th>
-                        <th class="dt-privilege">Επίπεδο Πρόσβασης</th>
-                        <th class="dt-includes">Περιλαμβάνει</th>
-                        <th class="dt-actions"></th>
-                    </thead>
-                </table>
-
-            </div>
-
-
-        </div>
-    </div>
-</div><!-- /manage -->
-
-
-
-<!-- MODAL for new/edit category -->
-<!-- NOTE: tabindex="-1" removed, ref:https://github.com/select2/select2-bootstrap-theme/issues/41 -->
-<div class="modal fade" id="managePrivileges" aria-labelledby="myModalLabel" aria-hidden="true">
-    <div class="modal-dialog modal-lg" role="document">
-        <div class="modal-content">
-        
-        <form method="post" action="">
-
-            <div class="modal-header">
-                <h4 class="modal-title" id="myModalLabel">Modal title</h4>
-                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
-            </div><!-- /modal-header -->
-
-            <!-- modal-body -->
-            <div class="modal-body">
-
-                <!-- form fields -->
-                    
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="label">Όνομα Επιπέδου Πρόσβασης</label>
-                    <div class="col-sm-12">
-                        <input class="form-control form-control-sm" type="text" name="label" value="" required="">
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <label class="control-label col-sm-12" for="included_id">Περιλαμβάνει μέχρι και το Επίπεδο</label>
-                    <div class="col-sm-12">
-                        <select class="form-control form-control-sm form-select form-select-sm" id="included_id" name="included_id" required></select>
-                    </div>
-                </div>
-
-                <div class="row form-group">
-                    <input type="hidden" name="id" value="0"><!-- action = (0) ? 'new' : 'edit' -->
-                </div>
-                        
-
-            </div><!-- /modal body -->
-
-            <div class="modal-footer">
-                <div class="row form-actions">
-
-                    <div class="col">
-                        <button type="button" class="btn btn-default js-modal-close col-sm-12" data-bs-dismiss="modal">Κλείσιμο</button>
-                    </div>
-                    <div class="col">
-                        <button class="btn btn-success col-sm-12" type="submit">Καταχώριση</button>
-                    </div>
-
-                </div>
-            </div><!-- /modal-footer -->
-
-        </form><!-- /form -->
-
-        </div>
-    </div>
-</div>
diff --git a/public/app/views/xx--admin/skeleton.php b/public/app/views/xx--admin/skeleton.php
deleted file mode 100644
index 927bd2d..0000000
--- a/public/app/views/xx--admin/skeleton.php
+++ /dev/null
@@ -1,45 +0,0 @@
-<?php ob_start(); ?><!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Classroom - <?=$title?></title>
-
-    <?php   // header includes
-        ////////////////////////////////////////////////////////////////////////
-        Render::view('components/header_includes',  ////////////////////////////
-            ['administration' => true]
-        );
-    ?>
-
-
-</head>
-<body>
-
-    <div class="classroom admin-container">
-
-        <?php 
-            // sometimes an ID (int) is needed
-            // ex. editing a page or a lesson we need page-ID or lesson-ID
-            // --- -- -- - - -
-            if (!isset($id)) $id=0;
-
-            // render menu
-            ////////////////////////////////////////////////////////////////////
-            Render::view('admin/admin-menu',[       ////////////////////////////
-                'action' => $action,
-                'id' => $id
-            ]);
-        
-            // render main content
-            ////////////////////////////////////////////////////////////////////
-            Render::view("admin/{$action}",[ 'id' => $id ]);    ////////////////
-        ?>
-    </div>
-
-    <!-- js admin script -->
-    <script>var entity_id = <?= $id ?>;</script>
-    <script src="/assets/js/admin/<?= $action ?>.js"></script>
-
-</body>
-</html><?php ob_flush(); ?>