feat(ui): create idiomatic UI matching previous katbin iteration

Signed-off-by: SphericalKat <amolele@gmail.com>

lib/ketbin_web/controllers/page_controller.ex

@@ -5,11 +5,25 @@ defmodule KetbinWeb.PageController do
   alias Ketbin.Pastes.Paste
 
   def index(conn, _params) do
-    render(conn, "index.html")
+    changeset = Pastes.change_paste(%Paste{})
+    render(conn, "index.html", changeset: changeset)
   end
 
   def show(conn, %{"id" => id}) do
     paste = Pastes.get_paste!(id)
     render(conn, "show.html", paste: paste)
   end
+
+  def create(conn, %{"paste" => paste_params}) do
+    # paste_params = Map.put(paste_params, "id", s)
+    case Pastes.create_paste(paste_params) do
+      {:ok, paste} ->
+        conn
+        |> put_flash(:info, "Paste created successfully.")
+        |> redirect(to: Routes.paste_path(conn, :show, paste))
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        render(conn, "index.html", changeset: changeset)
+    end
+  end
 end