Add API to join and leave an event

lib/mobilizon_web/schema/events/participant.ex

@@ -5,18 +5,34 @@ defmodule MobilizonWeb.Schema.Events.ParticipantType do
   use Absinthe.Schema.Notation
   import Absinthe.Resolution.Helpers, only: [dataloader: 1]
   alias MobilizonWeb.Resolvers
+  alias Mobilizon.Events
+  alias Mobilizon.Actors
 
   @desc "Represents a participant to an event"
   object :participant do
-    field(:event, :event,
+    field(
+      :event,
+      :event,
       resolve: dataloader(Events),
       description: "The event which the actor participates in"
     )
 
-    field(:actor, :actor, description: "The actor that participates to the event")
+    field(
+      :actor,
+      :actor,
+      resolve: dataloader(Actors),
+      description: "The actor that participates to the event"
+    )
+
     field(:role, :integer, description: "The role of this actor at this event")
   end
 
+  @desc "Represents a deleted participant"
+  object :deleted_participant do
+    field(:event, :deleted_object)
+    field(:actor, :deleted_object)
+  end
+
   object :participant_queries do
     @desc "Get all participants for an event uuid"
     field :participants, list_of(:participant) do
@@ -26,4 +42,22 @@ defmodule MobilizonWeb.Schema.Events.ParticipantType do
       resolve(&Resolvers.Event.list_participants_for_event/3)
     end
   end
+
+  object :participant_mutations do
+    @desc "Join an event"
+    field :join_event, :participant do
+      arg(:event_id, non_null(:integer))
+      arg(:actor_id, non_null(:integer))
+
+      resolve(&Resolvers.Event.actor_join_event/3)
+    end
+
+    @desc "Leave an event"
+    field :leave_event, :deleted_participant do
+      arg(:event_id, non_null(:integer))
+      arg(:actor_id, non_null(:integer))
+
+      resolve(&Resolvers.Event.actor_leave_event/3)
+    end
+  end
 end