feat(pastes): implement editing for logged in users

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

lib/ketbin_web/controllers/page_controller.ex

@@ -15,16 +15,29 @@ defmodule KetbinWeb.PageController do
   def show(conn, %{"id" => id}) do
     paste = Pastes.get_paste!(id) # fetch paste from db
 
+    # pull off current user if exists
+    current_user = conn.assigns.current_user
+
+    # show edit if current user matches creator of paste
+    show_edit = current_user && current_user.id || false
+
     if paste.is_url do # paste is a url, redirect
       redirect(conn, external: paste.content)
     else # regular paste, show content
-      render(conn, "show.html", paste: paste)
+      render(conn, "show.html", paste: paste, show_edit: show_edit)
     end
   end
 
   def showlink(conn, %{"id" => id}) do
     paste = Pastes.get_paste!(id)
-    render(conn, "show.html", paste: paste)
+
+    # pull off current user if exists
+    current_user = conn.assigns.current_user
+
+    # show edit if current user matches creator of paste
+    show_edit = current_user && current_user.id || false
+
+    render(conn, "show.html", paste: paste, show_edit: show_edit)
   end
 
   def raw(conn, %{"id" => id}) do
@@ -48,7 +61,7 @@ defmodule KetbinWeb.PageController do
     paste_params =
       Map.put(paste_params, "id", id)
       |> Map.put("is_url", is_url)
-      |> Map.put("belongs_to", (if current_user, do: current_user.id, else: nil))
+      |> Map.put("belongs_to", current_user && current_user.id)
 
     # attempt to create a paste
     case Pastes.create_paste(paste_params) do
@@ -65,4 +78,24 @@ defmodule KetbinWeb.PageController do
         render(conn, "index.html", changeset: changeset)
     end
   end
+
+  def edit(conn, %{"id" => id}) do
+    paste = Pastes.get_paste!(id)
+    changeset = Pastes.change_paste(paste)
+    render(conn, "edit.html", paste: paste, changeset: changeset)
+  end
+
+  def update(conn, %{"id" => id, "paste" => paste_params}) do
+    paste = Pastes.get_paste!(id)
+
+    case Pastes.update_paste(paste, paste_params) do
+      {:ok, paste} ->
+        conn
+        |> put_flash(:info, "Paste updated successfully.")
+        |> redirect(to: Routes.page_path(conn, :show, paste))
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        render(conn, "edit.html", paste: paste, changeset: changeset)
+    end
+  end
 end

lib/ketbin_web/controllers/user_auth.ex

@@ -1,4 +1,5 @@
 defmodule KetbinWeb.UserAuth do
+  require Logger
   import Plug.Conn
   import Phoenix.Controller
 
@@ -94,6 +95,11 @@ defmodule KetbinWeb.UserAuth do
     assign(conn, :current_user, user)
   end
 
+  def owns_paste(%{assigns: %{current_user: user}} = conn, _params) do
+    Logger.info("USER: #{inspect(user)}")
+    conn
+  end
+
   defp ensure_user_token(conn) do
     if user_token = get_session(conn, :user_token) do
       {user_token, conn}