1 files changed, 42 insertions, 0 deletions
diff --git a/pkgs/desktops/pantheon/nixpkgs_github_update/lib/nixpkgs_github_update/github_latest_version.ex b/pkgs/desktops/pantheon/nixpkgs_github_update/lib/nixpkgs_github_update/github_latest_version.ex
new file mode 100644
index 00000000000..bd4bb8100ba
--- /dev/null
+++ b/pkgs/desktops/pantheon/nixpkgs_github_update/lib/nixpkgs_github_update/github_latest_version.ex
@@ -0,0 +1,42 @@
+defmodule NixpkgsGitHubUpdate.GitHubLatestVersion do
+  @user_agent 'httpc'
+
+  def fetch({owner, repo}) do
+    endpoint = releases_endpoint(owner, repo)
+    headers = construct_headers()
+
+    :httpc.request(:get, {endpoint, headers}, [], [])
+    |> handle_response
+  end
+
+  def releases_endpoint(owner, repo) do
+    'https://api.github.com/repos/#{owner}/#{repo}/releases/latest'
+  end
+
+  def construct_headers do
+    headers = %{'User-Agent' => @user_agent}
+
+    put_token(headers, get_token())
+    |> Map.to_list
+  end
+
+  defp get_token do
+    String.to_charlist("#{System.get_env("OAUTH_TOKEN")}")
+  end
+
+  defp put_token(headers, token) when is_binary(token) do
+    Map.put_new(headers, 'Authorization', 'token #{token}')
+  end
+
+  defp put_token(headers, _), do: headers
+
+  def handle_response({_, {{_httpv, status_code, _}, _headers, response}}) do
+    {
+      status_code |> check_for_error(),
+      response |> Poison.Parser.parse!(%{})
+    }
+  end
+
+  defp check_for_error(200), do: :ok
+  defp check_for_error(_), do: :error
+end