Add backend for group invitations

For #887

lib/graphql/schema/invitation.ex

@@ -0,0 +1,50 @@
+defmodule Mobilizon.GraphQL.Schema.InvitationType do
+  @moduledoc """
+  Schema representation for Invitation
+  """
+  use Absinthe.Schema.Notation
+  alias Mobilizon.GraphQL.Resolvers.Invitation
+
+  @desc "A local invitation to a Mobilizon group"
+  object :invitation do
+    meta(:authorize, :user)
+    field(:token, :string, description: "The invitation token")
+    field(:label, :string, description: "The invitation label")
+  end
+
+  object :invitation_mutations do
+    @desc "Create an invitation for a group"
+    field :create_invitation, type: :invitation do
+      arg(:group_id, non_null(:id), description: "ID of the group")
+      arg(:label, :string, description: "Label")
+      middleware(Rajska.QueryAuthorization, permit: :user, scope: false)
+      resolve(&Invitation.create_invitation/3)
+    end
+
+    @desc "Update an invitation for a group"
+    field :update_invitation, type: :invitation do
+      arg(:group_id, non_null(:id), description: "ID of the group")
+      arg(:token, :string, description: "Token")
+      arg(:label, :string, description: "Label")
+      middleware(Rajska.QueryAuthorization, permit: :user, scope: false)
+      resolve(&Invitation.update_invitation/3)
+    end
+
+    @desc "Delete an invitation for a group"
+    field :delete_invitation, type: :invitation do
+      arg(:group_id, non_null(:id), description: "ID of the group")
+      arg(:token, :string, description: "Token")
+      middleware(Rajska.QueryAuthorization, permit: :user, scope: false)
+      resolve(&Invitation.delete_invitation/3)
+    end
+  end
+
+  object :invitation_queries do
+    @desc "List all invitations for a group"
+    field :list_invitations, non_null(list_of(:invitation)) do
+      arg(:group_id, non_null(:id), description: "ID of the group")
+      middleware(Rajska.QueryAuthorization, permit: :user, scope: false)
+      resolve(&Invitation.list_invitations/3)
+    end
+  end
+end