Expand API to return transaction groups.

app/Api/V2/Request/Transaction/ListRequest.php

@@ -24,15 +24,84 @@ declare(strict_types=1);
 
 namespace FireflyIII\Api\V2\Request\Transaction;
 
+use Carbon\Carbon;
+use FireflyIII\Support\Http\Api\TransactionFilter;
 use FireflyIII\Support\Request\ChecksLogin;
+use FireflyIII\Support\Request\ConvertsDataTypes;
 use Illuminate\Foundation\Http\FormRequest;
 
 /**
  * Class ListRequest
+ * Used specifically to list transactions.
  */
 class ListRequest extends FormRequest
 {
     use ChecksLogin;
+    use ConvertsDataTypes;
+    use TransactionFilter;
+
+    /**
+     * @return string
+     */
+    public function buildParams(): string
+    {
+        $array = [
+            'page' => $this->getPage(),
+        ];
+
+        $start = $this->getStartDate();
+        $end   = $this->getEndDate();
+        if (null !== $start && null !== $end) {
+            $array['start'] = $start->format('Y-m-d');
+            $array['end']   = $end->format('Y-m-d');
+        }
+        if (0 !== $this->getLimit()) {
+            $array['limit'] = $this->getLimit();
+        }
+        return http_build_query($array);
+    }
+
+    /**
+     * @return int
+     */
+    public function getPage(): int
+    {
+        $page = $this->convertInteger('page');
+        return 0 === $page || $page > 65536 ? 1 : $page;
+    }
+
+    /**
+     * @return Carbon|null
+     */
+    public function getStartDate(): ?Carbon
+    {
+        return $this->getCarbonDate('start');
+    }
+
+    /**
+     * @return Carbon|null
+     */
+    public function getEndDate(): ?Carbon
+    {
+        return $this->getCarbonDate('end');
+    }
+
+    /**
+     * @return int
+     */
+    public function getLimit(): int
+    {
+        return $this->convertInteger('limit');
+    }
+
+    /**
+     * @return array
+     */
+    public function getTransactionTypes(): array
+    {
+        $type = (string)$this->get('type', 'default');
+        return $this->mapTransactionTypes($type);
+    }
 
     /**
      * @return array