Unify piggy bank events. Does not save a link to the journal (yet)

app/Handlers/Events/PiggyBankEventHandler.php

@@ -0,0 +1,55 @@
+<?php
+/*
+ * PiggyBankEventHandler.php
+ * Copyright (c) 2022 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace FireflyIII\Handlers\Events;
+
+use Carbon\Carbon;
+use FireflyIII\Events\ChangedPiggyBankAmount;
+use FireflyIII\Models\PiggyBankEvent;
+
+/**
+ * Class PiggyBankEventHandler
+ */
+class PiggyBankEventHandler
+{
+    /**
+     * @param  ChangedPiggyBankAmount  $event
+     * @return void
+     */
+    public function changePiggyAmount(ChangedPiggyBankAmount $event): void
+    {
+        // find journal if group is present.
+        $journal = $event->transactionJournal;
+        if (null !== $event->transactionGroup) {
+            $journal = $event->transactionGroup->transactionJournals()->first();
+        }
+        $date = $journal?->date ?? Carbon::now();
+        PiggyBankEvent::create(
+            [
+                'piggy_bank_id'          => $event->piggyBank->id,
+                'transaction_journal_id' => $journal?->id,
+                'date'                   => $date->format('Y-m-d'),
+                'amount'                 => $event->amount,
+            ]
+        );
+    }
+
+}