philomena/lib/philomena/bans/user.ex
2019-12-13 12:14:34 -05:00

83 lines
2.2 KiB
Elixir

defmodule Philomena.Bans.User do
use Ecto.Schema
import Ecto.Changeset
alias Philomena.Users.User
alias Philomena.Repo
alias RelativeDate.Parser
schema "user_bans" do
belongs_to :user, User
belongs_to :banning_user, User
field :reason, :string
field :note, :string
field :enabled, :boolean, default: true
field :valid_until, :utc_datetime
field :generated_ban_id, :string
field :override_ip_ban, :boolean, default: false
field :username, :string, virtual: true
field :until, :string, virtual: true
timestamps(inserted_at: :created_at)
end
@doc false
def changeset(user_ban, attrs) do
user_ban
|> cast(attrs, [])
|> populate_until()
|> populate_username()
end
def save_changeset(user_ban, attrs) do
user_ban
|> cast(attrs, [:reason, :note, :enabled, :override_ip_ban, :username, :until])
|> populate_valid_until()
|> populate_user_id()
|> put_ban_id()
|> validate_required([:reason, :enabled, :user_id, :valid_until])
end
defp populate_until(%{data: data} = changeset) do
put_change(changeset, :until, to_string(data.valid_until))
end
defp populate_valid_until(changeset) do
changeset
|> get_field(:until)
|> Parser.parse()
|> case do
{:ok, time} ->
change(changeset, valid_until: time)
{:error, _err} ->
add_error(changeset, :until, "is not a valid absolute or relative date and time")
end
end
defp populate_username(changeset) do
case maybe_get_by(:id, get_field(changeset, :user_id)) do
nil -> changeset
user -> put_change(changeset, :username, user.name)
end
end
defp populate_user_id(changeset) do
case maybe_get_by(:name, get_field(changeset, :username)) do
nil -> changeset
%{id: id} -> put_change(changeset, :user_id, id)
end
end
defp put_ban_id(%{data: %{generated_ban_id: nil}} = changeset) do
ban_id = Base.encode16(:crypto.strong_rand_bytes(3))
put_change(changeset, :generated_ban_id, "U#{ban_id}")
end
defp put_ban_id(changeset), do: changeset
defp maybe_get_by(_field, nil), do: nil
defp maybe_get_by(field, value), do: Repo.get_by(User, [{field, value}])
end