add deletion/duplicate handling to api

lib/philomena_web/controllers/api/json/image_controller.ex

@@ -3,10 +3,24 @@ defmodule PhilomenaWeb.Api.Json.ImageController do
 
   alias PhilomenaWeb.ImageJson
   alias Philomena.Images.Image
+  alias Philomena.Repo
+  import Ecto.Query
 
-  plug :load_and_authorize_resource, model: Image, only: [:show], preload: [:tags, :user, :intensity]
+  def show(conn, %{"id" => id}) do
+    image =
+      Image
+      |> where(id: ^id)
+      |> preload([:tags, :user, :intensity])
+      |> Repo.one()
 
-  def show(conn, _params) do
-    json(conn, %{image: ImageJson.as_json(conn, conn.assigns.image)})
+    case image do
+      nil ->
+        conn
+        |> put_status(:not_found)
+        |> text("")
+
+      _ ->
+        json(conn, %{image: ImageJson.as_json(conn, image)})
+    end
   end
 end

lib/philomena_web/image_json.ex

@@ -1,7 +1,29 @@
 defmodule PhilomenaWeb.ImageJson do
   alias PhilomenaWeb.ImageView
 
-  def as_json(conn, image) do
+  def as_json(_conn, %{hidden_from_users: true, duplicate_id: duplicate_id} = image) when not is_nil(duplicate_id) do
+    %{
+      id: image.id,
+      created_at: image.created_at,
+      updated_at: image.updated_at,
+      first_seen_at: image.first_seen_at,
+      duplicate_of: image.duplicate_id,
+      deletion_reason: nil,
+      hidden_from_users: true
+    }
+  end
+  def as_json(_conn, %{hidden_from_users: true} = image) do
+    %{
+      id: image.id,
+      created_at: image.created_at,
+      updated_at: image.updated_at,
+      first_seen_at: image.first_seen_at,
+      deletion_reason: image.deletion_reason,
+      duplicate_of: nil,
+      hidden_from_users: true
+    }
+  end
+  def as_json(conn, %{hidden_from_users: false} = image) do
     %{
       id: image.id,
       created_at: image.created_at,
@@ -33,7 +55,10 @@ defmodule PhilomenaWeb.ImageJson do
       representations: ImageView.thumb_urls(image, false),
       spoilered: ImageView.filter_or_spoiler_hits?(conn, image),
       thumbnails_generated: image.thumbnails_generated,
-      processed: image.processed
+      processed: image.processed,
+      deletion_reason: nil,
+      duplicate_of: nil,
+      hidden_from_users: false
     }
   end