Fix following groups + Add interface to manage followers

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/graphql/schema/actors/follower.ex

@@ -3,11 +3,13 @@ defmodule Mobilizon.GraphQL.Schema.Actors.FollowerType do
   Schema representation for Follower
   """
   use Absinthe.Schema.Notation
+  alias Mobilizon.GraphQL.Resolvers.Followers
 
   @desc """
   Represents an actor's follower
   """
   object :follower do
+    field(:id, :id, description: "The follow ID")
     field(:target_actor, :actor, description: "What or who the profile follows")
     field(:actor, :actor, description: "Which profile follows")
 
@@ -26,4 +28,17 @@ defmodule Mobilizon.GraphQL.Schema.Actors.FollowerType do
     field(:elements, list_of(:follower), description: "A list of followers")
     field(:total, :integer, description: "The total number of elements in the list")
   end
+
+  object :follower_mutations do
+    @desc "Update follower"
+    field :update_follower, :follower do
+      arg(:id, non_null(:id), description: "The follower ID")
+
+      arg(:approved, non_null(:boolean),
+        description: "Whether the follower has been approved by the target actor or not"
+      )
+
+      resolve(&Followers.update_follower/3)
+    end
+  end
 end