(feat) return path to original page

lib/algora_web/components/layouts/live.html.heex

@@ -48,7 +48,7 @@
       <%= if @current_user do %>
         <.sidebar_account_dropdown id="mobile-account-dropdown" current_user={@current_user} />
       <% else %>
-        <a class="group outline-none w-full" target="_self" href="/auth/login">
+        <a class="group outline-none w-full" href={~p"/auth/login?#{[return_to: @uri.path]}">
           <div class="flex text-center font-sans justify-center items-center shrink-0 duration-150 select-none group-focus:outline-none group-disabled:opacity-75 group-disabled:pointer-events-none transition bg-indigo-700 hover:bg-indigo-600 disabled:opacity-50 h-10 px-2.5 text-base font-semibold rounded mx-3">
             <div class="justify-center flex w-full items-center gap-x-1">
               <span class="mx-auto grow self-center truncate px-1 text-gray-100 text-base font-semibold">

lib/algora_web/components/layouts/root.html.heex

@@ -178,7 +178,7 @@
             </div>
           <% else %>
             <.link
-              navigate="/auth/login"
+              href={~p"/auth/login?#{[return_to: @uri.path]}"}
               class="rounded-lg bg-gray-50 hover:bg-gray-200 py-1 px-2 text-sm font-semibold leading-6 text-gray-950 active:text-gray-950/80"
             >
               <span class="relative font-semibold text-sm">Login</span>

lib/algora_web/controllers/redirect_controller.ex

@@ -1,15 +1,17 @@
 defmodule AlgoraWeb.RedirectController do
   use AlgoraWeb, :controller
 
-  import AlgoraWeb.UserAuth, only: [fetch_current_user: 2]
+  import AlgoraWeb.UserAuth, only: [fetch_current_user: 2, maybe_store_return_to: 1]
 
   plug :fetch_current_user
 
   def redirect_authenticated(conn, _) do
     if conn.assigns.current_user do
       AlgoraWeb.UserAuth.redirect_if_user_is_authenticated(conn, [])
     else
-      redirect(conn, to: ~p"/auth/login")
+      conn
+      |> maybe_store_return_to() // stores the return to path in the session
+      |> redirect(to: ~p"/auth/login")
     end
   end
 

lib/algora_web/controllers/user_auth.ex

@@ -56,6 +56,7 @@ defmodule AlgoraWeb.UserAuth do
   defp redirect_require_login(socket) do
     socket
     |> LiveView.put_flash(:error, "Please sign in")
+    |> LiveView.put_session(:user_return_to, socket.assigns.uri.path)
     |> LiveView.redirect(to: ~p"/auth/login")
   end
 

lib/algora_web/live/sign_in_live.ex

@@ -9,7 +9,7 @@ defmodule AlgoraWeb.SignInLive do
           Algora TV
         </h2>
         <a
-          href={Algora.Github.authorize_url()}
+          href={Algora.Github.authorize_url(@return_to)}
           class="mt-8 w-full flex justify-center py-2 px-4 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-purple-600 hover:bg-purple-600 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-purple-400"
         >
           Sign in with GitHub
@@ -20,6 +20,9 @@ defmodule AlgoraWeb.SignInLive do
   end
 
   def mount(_params, _session, socket) do
-    {:ok, socket}
+    {:ok, 
+     socket
+     |> assign(:page_title, "Sign in")
+     |> assign(:return_to, socket.assigns.uri.query_params["return_to"])}
   end
 end