feat: duplicate an accommodation booking into a new draft

addresses #869f6z44f

src/Entity/Groups/AccommodationBooking.php

@@ -200,6 +200,34 @@ class AccommodationBooking implements BlameableEntityInterface, TimestampableEnt
         $this->uuid = Uuid::v4()->toRfc4122();
     }
 
+    /**
+     * A copy is a new record, not a second view of the original: it gets its own identity and
+     * its own access link token — sharing that token would put two records behind one customer
+     * link — and every mark the lifecycle left is wiped, so the copy starts as an Entwurf that
+     * has never been in front of a customer. The origin is rewritten too: however the original
+     * came about, the copy comes about as an offer the office prepared, which is what keeps the
+     * field truthful.
+     *
+     * The price snapshot, the service snapshots and all four discounts are deliberately carried
+     * over untouched. A copy is made to vary an offer that was already quoted, so it has to show
+     * the same numbers as the record it came from rather than a re-quote at today's catalog
+     * prices; saving it through the edit form recomputes it.
+     */
+    public function __clone()
+    {
+        $this->id = null;
+        $this->uuid = Uuid::v4()->toRfc4122();
+        $this->status = AccommodationBookingStatus::Draft;
+        $this->origin = AccommodationBookingOrigin::Offer;
+        $this->accessLinkIssuedAt = null;
+        $this->acceptedAt = null;
+        $this->confirmedAt = null;
+        $this->createdAt = null;
+        $this->updatedAt = null;
+        $this->createdBy = null;
+        $this->updatedBy = null;
+    }
+
     public function getId(): ?int
     {
         return $this->id;