content: -- This file is part of the Wire Server implementation.
  --
  -- Copyright (C) 2022 Wire Swiss GmbH <opensource@wire.com>
  --
  -- This program is free software: you can redistribute it and/or modify it under
  -- the terms of the GNU Affero General Public License as published by the Free
  -- Software Foundation, either version 3 of the License, or (at your option) any
  -- later version.
  --
  -- This program is distributed in the hope that it will be useful, but WITHOUT
  -- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  -- FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
  -- details.
  --
  -- You should have received a copy of the GNU Affero General Public License along
  -- with this program. If not, see <https://www.gnu.org/licenses/>.
  
  -- | > docs/reference/user/activation.md {#RefActivationAllowlist}
  --
  -- Email/phone whitelist.
  module Wire.API.Allowlists
    ( AllowlistEmailDomains (..),
      verify,
    )
  where
  
  import Data.Aeson
  import Data.Text.Encoding (decodeUtf8)
  import Imports
  import Wire.API.User.Identity
  
  -- | A service providing a whitelist of allowed email addresses and phone numbers
  data AllowlistEmailDomains = AllowlistEmailDomains [Text]
    deriving (Show, Generic)
  
  instance FromJSON AllowlistEmailDomains
  
  -- | Consult the whitelist settings in brig's config file and verify that the provided
  -- email address is whitelisted.
  verify :: Maybe AllowlistEmailDomains -> EmailAddress -> Bool
  verify (Just (AllowlistEmailDomains allowed)) email = (decodeUtf8 . domainPart $ email) `elem` allowed
  verify Nothing (_) = True
  