1 files changed, 38 insertions, 0 deletions
diff --git a/lib/lsg/token.ex b/lib/lsg/token.ex
new file mode 100644
index 0000000..33946d4
--- /dev/null
+++ b/lib/lsg/token.ex
@@ -0,0 +1,38 @@
+defmodule LSG.Token do
+  use GenServer
+
+  def start_link() do
+    GenServer.start_link(__MODULE__, [], [name: __MODULE__])
+  end
+
+  def lookup(id) do
+    with \
+         [{_, cred, date}] <- :ets.lookup(__MODULE__.ETS, id),
+         IO.inspect("cred: #{inspect cred} valid for #{inspect date} now #{inspect DateTime.utc_now()}"),
+        d when d > 0 <- DateTime.diff(date, DateTime.utc_now())
+    do
+      {:ok, cred}
+    else
+      err -> {:error, err}
+    end
+  end
+
+  def new(cred) do
+    GenServer.call(__MODULE__, {:new, cred})
+  end
+
+  def init(_) do
+    ets = :ets.new(__MODULE__.ETS, [:ordered_set, :named_table, :protected, {:read_concurrency, true}])
+    {:ok, ets}
+  end
+
+  def handle_call({:new, cred}, _, ets) do
+    id = IRC.UserTrack.Id.large_id()
+    expire = DateTime.utc_now()
+             |> DateTime.add(15*60, :second)
+    obj = {id, cred, expire}
+    :ets.insert(ets, obj)
+    {:reply, {:ok, id}, ets}
+  end
+
+end