after running phx.gen.auth

lib/clip_web/controllers/user_session_controller.ex

@@ -0,0 +1,26 @@
+defmodule ClipWeb.UserSessionController do
+  use ClipWeb, :controller
+
+  alias Clip.Accounts
+  alias ClipWeb.UserAuth
+
+  def new(conn, _params) do
+    render(conn, "new.html", error_message: nil)
+  end
+
+  def create(conn, %{"user" => user_params}) do
+    %{"email" => email, "password" => password} = user_params
+
+    if user = Accounts.get_user_by_email_and_password(email, password) do
+      UserAuth.log_in_user(conn, user, user_params)
+    else
+      render(conn, "new.html", error_message: "Invalid e-mail or password")
+    end
+  end
+
+  def delete(conn, _params) do
+    conn
+    |> put_flash(:info, "Logged out successfully.")
+    |> UserAuth.log_out_user()
+  end
+end