feat(api): 1395 allow url link to image in event creation api

lib/graphql/api/events.ex

@@ -57,6 +57,15 @@ defmodule Mobilizon.GraphQL.API.Events do
   defp process_picture(%{media_id: _picture_id} = args, _), do: args
 
   defp process_picture(%{media: media}, %Actor{id: actor_id}) do
+    # case url
+    if Map.has_key?(media, :url) do
+      %{
+        file: %{"url" => media.url, "name" => media.name},
+        actor_id: actor_id
+      }
+
+      # case upload
+    else
       with uploaded when is_map(uploaded) <-
              media
              |> Map.get(:file)
@@ -68,6 +77,7 @@ defmodule Mobilizon.GraphQL.API.Events do
         }
       end
     end
+  end
 
   @spec extract_pictures_from_event_body(map(), Actor.t()) :: map()
   defp extract_pictures_from_event_body(

lib/graphql/schema/media.ex

@@ -52,8 +52,9 @@ defmodule Mobilizon.GraphQL.Schema.MediaType do
   input_object :media_input_object do
     field(:name, non_null(:string), description: "The media's name")
     field(:alt, :string, description: "The media's alternative text")
-    field(:file, non_null(:upload), description: "The media file")
+    field(:file, :upload, description: "The media file")
     field(:actor_id, :id, description: "The media owner")
+    field(:url, :string, description: "The media URL")
   end
 
   object :media_queries do