feat: redesign tickets main view and basket view with improved styles and layout

- Updated SCSS for tickets main view and basket view, enhancing visual design and responsiveness.
- Added new calendar functionality in the admin panel for managing ticket availability.
- Implemented error handling for ticket availability in the basket view.
- Introduced a new calendar availability table in the database for tracking ticket dates.
- Added a new link to the calendar in the logged-in user navigation.
- Improved ticket selection logic to disable unavailable tickets in the main view.
- Created guidelines for code standards in AGENTS.md.

autoload/controls/class.Tickets.php

@@ -9,13 +9,24 @@ class Tickets
     global $settings;
 
     $enable_sell = \factory\Apanel::getSetting('enable_sell', '1');
+    $selectedDate = \S::get('selected_date');
+    $normalizedSelectedDate = \factory\Tickets::normalizeDateFromPicker($selectedDate);
+    $ticketAvailability = [];
+
+    if ($normalizedSelectedDate) {
+      $ticketAvailability = \factory\Tickets::getTicketAvailabilityForDate(
+        array_keys($settings['tickets']),
+        $normalizedSelectedDate
+      );
+    }
 
     if ( !$enable_sell || $enable_sell === '0' )
       return \Tpl::view( 'tickets/disabled-sell' );
 
     return \Tpl::view('tickets/main-view', [
       'cart' => \S::get_session('basket'),
-      'settings' => $settings
+      'settings' => $settings,
+      'ticket_availability' => $ticketAvailability
     ]);
   }
 
@@ -23,19 +34,45 @@ class Tickets
   {
     global $settings;
 
-
     $selected_date = \S::get( 'date' ) ? \S::get( 'date' ) : null;
     $diffDays = \S::get('diffdays') ?? 0;
+    $ticket_id = \S::get('ticket_id');
+    $basket = \S::get_session('basket');
+
+    if (!$selected_date && isset($basket[$ticket_id][$diffDays]['date'])) {
+      $selected_date = $basket[$ticket_id][$diffDays]['date'];
+    }
+
+    if (!$selected_date && \factory\Tickets::getCalendarGroupForTicket($ticket_id)) {
+      echo json_encode([
+        'status' => 'error',
+        'message' => 'Wybierz datę wizyty dla tego biletu.'
+      ]);
+      exit;
+    }
 
     if ( $selected_date )
     {
-      $selected = new \DateTime($selected_date);
+      $selected = \DateTime::createFromFormat('d-m-Y', $selected_date);
+      if (!$selected) {
+        echo json_encode([
+          'status' => 'error',
+          'message' => 'Niepoprawna data wizyty.'
+        ]);
+        exit;
+      }
+
       $today = new \DateTime(date('Y-m-d') . ' 00:00:00');
       $diffDays = $selected->diff($today)->days;
-    }
 
-    $basket = \S::get_session('basket');
-    $ticket_id = \S::get('ticket_id');
+      if (!\factory\Tickets::canBuyTicketOnDate($ticket_id, $selected_date)) {
+        echo json_encode([
+          'status' => 'error',
+          'message' => 'Ten rodzaj biletu jest niedostępny w wybranym dniu.'
+        ]);
+        exit;
+      }
+    }
 
     if ( !empty($basket[$ticket_id][$diffDays]) )
     {
@@ -53,7 +90,8 @@ class Tickets
           $addon = 0;
       }
 
-      $is_weekend = $selected_date && in_array((new \DateTime($selected_date))->format('N'), ['6', '7']);
+      $selectedDateObject = $selected_date ? \DateTime::createFromFormat('d-m-Y', $selected_date) : null;
+      $is_weekend = $selectedDateObject && in_array($selectedDateObject->format('N'), ['6', '7']);
       $base_price = $is_weekend
         ? ($settings['tickets'][$ticket_id]['price_weekend'] ?? $settings['tickets'][$ticket_id]['price'])
         : $settings['tickets'][$ticket_id]['price'];
@@ -228,6 +266,24 @@ class Tickets
     global $settings, $mdb;
 
     $basket = \S::get_session('basket');
+    if (empty($basket) || !is_array($basket)) {
+      header('Location: /tickets/main_view/');
+      exit;
+    }
+
+    foreach ($basket as $ticketId => $variants) {
+      foreach ($variants as $variant) {
+        if (empty($variant['date'])) {
+          continue;
+        }
+
+        if (!\factory\Tickets::canBuyTicketOnDate($ticketId, $variant['date'])) {
+          header('Location: /tickets/basket_view/?calendar_error=1');
+          exit;
+        }
+      }
+    }
+
     $date = date('Y-m-d H:i:s');
 
     $finalPrice = 0;
@@ -637,4 +693,4 @@ class Tickets
   {
     return \Tpl::view('site/regulamin-for-gifts');
   }
-}
+}