From 7625dab4238640cd3f11e45477aadb7b5c4905ba Mon Sep 17 00:00:00 2001
From: Alexis Hernandez <alexis22229@gmail.com>
Date: Sat, 10 Mar 2018 22:09:34 -0600
Subject: [PATCH] server: Add TransactionId model

---
 .../xsn/explorer/models/TransactionId.scala    | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 server/app/com/xsn/explorer/models/TransactionId.scala

diff --git a/server/app/com/xsn/explorer/models/TransactionId.scala b/server/app/com/xsn/explorer/models/TransactionId.scala
new file mode 100644
index 0000000..3cae0fa
--- /dev/null
+++ b/server/app/com/xsn/explorer/models/TransactionId.scala
@@ -0,0 +1,18 @@
+package com.xsn.explorer.models
+
+class TransactionId private (val string: String) extends AnyVal
+
+object TransactionId {
+
+  private val pattern = "^[a-f0-9]{64}$".r.pattern
+
+  def from(string: String): Option[TransactionId] = {
+    val lowercaseString = string.toLowerCase
+
+    if (pattern.matcher(lowercaseString).matches()) {
+      Some(new TransactionId(lowercaseString))
+    } else {
+      None
+    }
+  }
+}