(#8) - Minimum lead time

includes/Models/RsvTimetableAvailability.php

@@ -5,17 +5,20 @@
  */
 class RsvTimetableAvailability {
     /**
-     * @param array<int,int> $occupancy Number of available seats for each time block
+     * @param array<int,int> $occupancy          Number of available seats for each time block
+     * @param array<int,int> $lead_time_minutes   Minimum lead time in minutes required for each block
      */
     public function __construct(
         public int $from_minutes,
         public int $to_minutes,
         public int $block_size_in_minutes,
-        public array $occupancy
+        public array $occupancy,
+        public array $lead_time_minutes = []
     ) { }
 
-    public function push_block(int $capacity) {
-        $this->occupancy[] = $capacity;
-        $this->to_minutes += $this->block_size_in_minutes;
+    public function push_block(int $capacity, int $min_lead_time_minutes = 0) {
+        $this->occupancy[]         = $capacity;
+        $this->lead_time_minutes[] = $min_lead_time_minutes;
+        $this->to_minutes         += $this->block_size_in_minutes;
     }
 }

includes/Services/RsvTimetableReservationService.php

@@ -39,6 +39,14 @@ class RsvTimetableReservationService {
             return false;
         }
 
+        $max_lead_time    = max(array_map(fn($c) => (int) $c->min_lead_time_minutes, $overlapping_capacity));
+        $earliest_allowed = new DateTime('now', new DateTimeZone('UTC'));
+        $earliest_allowed->modify("+{$max_lead_time} minutes");
+        if ($start_utc < $earliest_allowed) {
+            Logger::error("Reservation rejected: minimum lead time of {$max_lead_time} minutes not met for timetable_id: $timetable_id");
+            return false;
+        }
+
         $start_min = $this->time_of_day_minutes($start_utc);
         $end_min   = $this->time_of_day_minutes($end_utc);
 

includes/Services/RsvTimetableService.php

@@ -98,7 +98,8 @@ class RsvTimetableService {
                     $availabilities[] = new RsvTimetableAvailability($i * $block_length, ($i + 1) * $block_length, $block_length, []);
                 }
 
-                $availabilities[$availability_idx]->push_block($total_capacity - count($reservation_stack));
+                $max_lead_time = empty($capacity_stack) ? 0 : max(array_map(fn($x) => $x->min_lead_time_minutes, $capacity_stack));
+                $availabilities[$availability_idx]->push_block($total_capacity - count($reservation_stack), $max_lead_time);
             } else if($total_capacity === 0 && count($availabilities) !== $availability_idx) {
                 $availability_idx++;
             }