Adds prepare functionality

src/Transaction.php

@@ -2,7 +2,62 @@
 
 namespace CraigPaul\Moneris;
 
+/**
+ * CraigPaul\Moneris\Gateway
+ *
+ * @property-read \CraigPaul\Moneris\Gateway $gateway
+ * @property-read array $params
+ */
 class Transaction
 {
+    use Gettable;
 
+    /**
+     * @var \CraigPaul\Moneris\Gateway
+     */
+    protected $gateway;
+
+    /**
+     * @var array
+     */
+    protected $params;
+
+    /**
+     * Create a new Transaction instance.
+     *
+     * @param \CraigPaul\Moneris\Gateway $gateway
+     * @param array $params
+     * @param bool $prepare
+     */
+    public function __construct(Gateway $gateway, array $params = [], $prepare = true)
+    {
+        $this->gateway = $gateway;
+        $this->params = $prepare ? $this->prepare($params) : $params;
+    }
+
+    /**
+     * Prepare the transaction parameters.
+     *
+     * @param array $params
+     *
+     * @return array
+     */
+    protected function prepare(array $params)
+    {
+        foreach ($params as $key => $value) {
+            if (is_string($value)) {
+                $params[$key] = trim($value);
+            }
+
+            if ($params[$key] == '') {
+                unset($params[$key]);
+            }
+        }
+
+        if (isset($params['pan'])) {
+            $params['pan'] = preg_replace('/\D/', '', $params['pan']);
+        }
+
+        return $params;
+    }
 }