Refactor currency API

app/Transformers/V2/CurrencyTransformer.php

@@ -0,0 +1,69 @@
+<?php
+/**
+ * CurrencyTransformer.php
+ * Copyright (c) 2019 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/>.
+ */
+
+declare(strict_types=1);
+
+namespace FireflyIII\Transformers\V2;
+
+use FireflyIII\Models\TransactionCurrency;
+use Illuminate\Support\Collection;
+
+/**
+ * Class CurrencyTransformer
+ */
+class CurrencyTransformer extends AbstractTransformer
+{
+    /**
+     * @inheritDoc
+     */
+    public function collectMetaData(Collection $objects): void
+    {
+
+    }
+
+    /**
+     * Transform the currency.
+     *
+     * @param TransactionCurrency $currency
+     *
+     * @return array
+     */
+    public function transform(TransactionCurrency $currency): array
+    {
+        return [
+            'id'             => (int)$currency->id,
+            'created_at'     => $currency->created_at->toAtomString(),
+            'updated_at'     => $currency->updated_at->toAtomString(),
+            'default'        => $currency->userDefault,
+            'enabled'        => $currency->userEnabled,
+            'name'           => $currency->name,
+            'code'           => $currency->code,
+            'symbol'         => $currency->symbol,
+            'decimal_places' => (int)$currency->decimal_places,
+            'links'          => [
+                [
+                    'rel' => 'self',
+                    'uri' => '/currencies/' . $currency->id,
+                ],
+            ],
+        ];
+    }
+}