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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.UserInviteToken do
use Ecto.Schema
import Ecto.Changeset
import Ecto.Query
alias Pleroma.Repo
alias Pleroma.UserInviteToken
@type t :: %__MODULE__{}
@type token :: String.t()
schema "user_invite_tokens" do
field(:token, :string)
field(:used, :boolean, default: false)
field(:max_use, :integer)
field(:expires_at, :date)
field(:uses, :integer, default: 0)
field(:invite_type, :string)
timestamps()
end
@spec create_invite(map()) :: {:ok, UserInviteToken.t()}
def create_invite(params \\ %{}) do
%UserInviteToken{}
|> cast(params, [:max_use, :expires_at])
|> add_token()
|> assign_type()
|> Repo.insert()
end
defp add_token(changeset) do
token = :crypto.strong_rand_bytes(32) |> Base.url_encode64()
put_change(changeset, :token, token)
end
defp assign_type(%{changes: %{max_use: _max_use, expires_at: _expires_at}} = changeset) do
put_change(changeset, :invite_type, "reusable_date_limited")
end
defp assign_type(%{changes: %{expires_at: _expires_at}} = changeset) do
put_change(changeset, :invite_type, "date_limited")
end
defp assign_type(%{changes: %{max_use: _max_use}} = changeset) do
put_change(changeset, :invite_type, "reusable")
end
defp assign_type(changeset), do: put_change(changeset, :invite_type, "one_time")
@spec list_invites() :: [UserInviteToken.t()]
def list_invites do
query = from(u in UserInviteToken, order_by: u.id)
Repo.all(query)
end
@spec update_invite!(UserInviteToken.t(), map()) :: UserInviteToken.t() | no_return()
def update_invite!(invite, changes) do
change(invite, changes) |> Repo.update!()
end
@spec update_invite(UserInviteToken.t(), map()) ::
{:ok, UserInviteToken.t()} | {:error, Changeset.t()}
def update_invite(invite, changes) do
change(invite, changes) |> Repo.update()
end
@spec find_by_token!(token()) :: UserInviteToken.t() | no_return()
def find_by_token!(token), do: Repo.get_by!(UserInviteToken, token: token)
@spec find_by_token(token()) :: {:ok, UserInviteToken.t()} | nil
def find_by_token(token) do
with %UserInviteToken{} = invite <- Repo.get_by(UserInviteToken, token: token) do
{:ok, invite}
end
end
@spec valid_invite?(UserInviteToken.t()) :: boolean()
def valid_invite?(%{invite_type: "one_time"} = invite) do
not invite.used
end
def valid_invite?(%{invite_type: "date_limited"} = invite) do
not_overdue_date?(invite) and not invite.used
end
def valid_invite?(%{invite_type: "reusable"} = invite) do
invite.uses < invite.max_use and not invite.used
end
def valid_invite?(%{invite_type: "reusable_date_limited"} = invite) do
not_overdue_date?(invite) and invite.uses < invite.max_use and not invite.used
end
defp not_overdue_date?(%{expires_at: expires_at}) do
Date.compare(Date.utc_today(), expires_at) in [:lt, :eq]
end
@spec update_usage!(UserInviteToken.t()) :: nil | UserInviteToken.t() | no_return()
def update_usage!(%{invite_type: "date_limited"}), do: nil
def update_usage!(%{invite_type: "one_time"} = invite),
do: update_invite!(invite, %{used: true})
def update_usage!(%{invite_type: invite_type} = invite)
when invite_type == "reusable" or invite_type == "reusable_date_limited" do
changes = %{
uses: invite.uses + 1
}
changes =
if changes.uses >= invite.max_use do
Map.put(changes, :used, true)
else
changes
end
update_invite!(invite, changes)
end
end
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