Make app new session button a link

lib/livebook_web/live/app_live.ex

@@ -62,10 +62,10 @@ defmodule LivebookWeb.AppLive do
           <% end %>
         </p>
         <div class="flex justify-end">
-          <button class="button-base button-outlined-blue" phx-click="new_session">
+          <.link class="button-base button-outlined-blue" patch={~p"/apps/#{@app.slug}/new"}>
             <.remix_icon icon="add-line" class="align-middle mr-1" />
             <span>New session</span>
-          </button>
+          </.link>
         </div>
         <div :if={@app_settings.show_existing_sessions} class="w-full flex flex-col space-y-4">
           <.link
@@ -94,13 +94,15 @@ defmodule LivebookWeb.AppLive do
   def render(assigns), do: auth_placeholder(assigns)
 
   @impl true
-  def handle_event("new_session", %{}, socket) do
+  def handle_params(_params, _url, socket) when socket.assigns.live_action == :new_session do
     session_id =
       Livebook.App.get_session_id(socket.assigns.app.pid, user: socket.assigns.current_user)
 
     {:noreply, push_navigate(socket, to: ~p"/apps/#{socket.assigns.app.slug}/#{session_id}")}
   end
 
+  def handle_params(_params, _url, socket), do: {:noreply, socket}
+
   @impl true
   def handle_info({:app_updated, app}, socket) do
     {:noreply, assign(socket, :app, app)}

lib/livebook_web/router.ex

@@ -113,6 +113,7 @@ defmodule LivebookWeb.Router do
       pipe_through [:browser, :user]
 
       live "/apps/:slug", AppLive, :page
+      live "/apps/:slug/new", AppLive, :new_session
       live "/apps/:slug/authenticate", AppAuthLive, :page
 
       live "/apps/:slug/:id", AppSessionLive, :page

test/livebook_web/live/app_live_test.exs

@@ -84,7 +84,7 @@ defmodule LivebookWeb.AppLiveTest do
 
       {:error, {:live_redirect, %{to: to}}} =
         view
-        |> element("button", "New session")
+        |> element("a", "New session")
         |> render_click()
 
       assert_receive {:app_updated, %{pid: ^app_pid, sessions: [%{id: session_id}]}}