From 1ec6712513631552b238ff9627f38a09afba25e0 Mon Sep 17 00:00:00 2001
From: Claudio Ortolina <cloud8421@gmail.com>
Date: Sat, 28 Sep 2024 15:27:59 +0100
Subject: [PATCH] Add health controller

Fly.io uses '/health' to determine the application health status.
---
 .../controllers/health_controller.ex          | 19 +++++++++++++++++++
 lib/music_library_web/router.ex               |  1 +
 2 files changed, 20 insertions(+)
 create mode 100644 lib/music_library_web/controllers/health_controller.ex

diff --git a/lib/music_library_web/controllers/health_controller.ex b/lib/music_library_web/controllers/health_controller.ex
new file mode 100644
index 00000000..51c9fc74
--- /dev/null
+++ b/lib/music_library_web/controllers/health_controller.ex
@@ -0,0 +1,19 @@
+defmodule MusicLibraryWeb.HealthController do
+  use MusicLibraryWeb, :controller
+
+  alias MusicLibrary.Repo
+
+  def index(conn, _params) do
+    case Repo.query("SELECT 1") do
+      {:ok, _} ->
+        conn
+        |> put_resp_content_type("text/html")
+        |> send_resp(200, "App is running")
+
+      {:error, _} ->
+        conn
+        |> put_resp_content_type("text/html")
+        |> send_resp(500, "App is not running")
+    end
+  end
+end
diff --git a/lib/music_library_web/router.ex b/lib/music_library_web/router.ex
index 31363c74..df87a45e 100644
--- a/lib/music_library_web/router.ex
+++ b/lib/music_library_web/router.ex
@@ -17,6 +17,7 @@ defmodule MusicLibraryWeb.Router do
   scope "/", MusicLibraryWeb do
     pipe_through :browser
 
+    get "/health", HealthController, :index
     get "/images/:record_id", ImageController, :show
 
     live "/", RecordLive.Index, :index