defmodule Glific.Groups.GroupUsers do
@moduledoc """
Simple container to hold all the group users we associate with one group
"""
alias __MODULE__
alias Glific.{
Groups,
Groups.UserGroup
}
use Ecto.Schema
@primary_key false
@type t() :: %__MODULE__{
group_users: [UserGroup.t()],
number_deleted: non_neg_integer
}
embedded_schema do
# the number of users we deleted
field :number_deleted, :integer, default: 0
embeds_many(:group_users, UserGroup)
end
@doc """
Creates and/or deletes a list of group users, each user attached to the same group
"""
@spec update_group_users(map()) :: GroupUsers.t()
def update_group_users(
%{group_id: group_id, add_user_ids: add_ids, delete_user_ids: delete_ids} = attrs
) do
# we'll ignore errors intentionally here. the return list indicates
# what objects we created
group_users =
Enum.reduce(
add_ids,
[],
fn user_id, acc ->
case Groups.create_user_group(Map.put(attrs, :user_id, user_id)) do
{:ok, group_user} -> [group_user | acc]
_ -> acc
end
end
)
{number_deleted, _} = Groups.delete_group_users_by_ids(group_id, delete_ids)
%GroupUsers{
number_deleted: number_deleted,
group_users: group_users
}
end
end