Add module to create email

lib/inmana/supplies/expiration_email.ex

@@ -0,0 +1,33 @@
+defmodule Inmana.Supplies.ExpirationEmail do
+    import Bamboo.Email
+
+    alias Inmana.Supply
+
+    def create(to_email, supplies) do
+        new_email(
+            to: to_email,
+            from: "[email protected]",
+            subject: "Supplies that are about to expire",
+            text_body: email_text(supplies)
+        )
+    end
+
+    defp email_text(supplies) do
+        initial_text = "------- Supplies that are about to expire: -------\n"
+
+        Enum.reduce(
+            supplies,
+            initial_text,
+            fn supply, text ->
+                text <> supply_string(supply)
+            end)
+    end
+
+    defp supply_string(%Supply{
+        description: description,
+        expiration_date: expiration_date,
+        responsible: responsible
+        }) do
+        "Description: #{description}, Expiration Date: #{expiration_date}, Responsible: #{responsible}\n"
+    end
+end