{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE TypeFamilies #-}

module Network.OAuth2.Provider.Dropbox where

import Data.Aeson
import Data.Map.Strict qualified as Map
import Data.Set qualified as Set
import Data.Text.Lazy (Text)
import GHC.Generics
import Network.OAuth.OAuth2
import Network.OAuth2.Experiment
import URI.ByteString.QQ

data Dropbox = Dropbox deriving (Eq, Show)

type instance IdpUserInfo Dropbox = DropboxUser

defaultDropboxApp :: IdpApplication 'AuthorizationCode Dropbox
defaultDropboxApp =
  AuthorizationCodeIdpApplication
    { idpAppClientId = "",
      idpAppClientSecret = "",
      idpAppScope = Set.empty,
      idpAppAuthorizeState = "CHANGE_ME",
      idpAppAuthorizeExtraParams = Map.empty,
      idpAppRedirectUri = [uri|http://localhost|],
      idpAppName = "default-dropbox-App",
      idpAppTokenRequestAuthenticationMethod = ClientSecretBasic,
      idp = defaultDropboxIdp
    }

defaultDropboxIdp :: Idp Dropbox
defaultDropboxIdp =
  Idp
    { idpFetchUserInfo = \mgr at url -> authPostJSON @(IdpUserInfo Dropbox) mgr at url [],
      idpAuthorizeEndpoint = [uri|https://www.dropbox.com/1/oauth2/authorize|],
      idpTokenEndpoint = [uri|https://api.dropboxapi.com/oauth2/token|],
      idpUserInfoEndpoint = [uri|https://api.dropboxapi.com/2/users/get_current_account|]
    }

newtype DropboxName = DropboxName {displayName :: Text}
  deriving (Show, Generic)

data DropboxUser = DropboxUser
  { email :: Text,
    name :: DropboxName
  }
  deriving (Show, Generic)

instance FromJSON DropboxName where
  parseJSON = genericParseJSON defaultOptions {fieldLabelModifier = camelTo2 '_'}

instance FromJSON DropboxUser