servant-reflex-0.3.4: src/Servant/Reflex.hs
{-# LANGUAGE AllowAmbiguousTypes #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE InstanceSigs #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE Rank2Types #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
#if MIN_VERSION_base(4,9,0)
{-# OPTIONS_GHC -fno-warn-redundant-constraints #-}
#endif
-- #include "overlapping-compat.h"
-- | This module provides 'client' which can automatically generate
-- querying functions for each endpoint just from the type representing your
-- API.
module Servant.Reflex
( client
, clientWithOpts
, clientWithOptsAndResultHandler
, clientWithRoute
, clientWithRouteAndResultHandler
, BuildHeaderKeysTo(..)
, toHeaders
, HasClient
, Client
, module Servant.Common.Req
, module Servant.Common.BaseUrl
) where
------------------------------------------------------------------------------
import Control.Applicative
import Data.Monoid ((<>))
import qualified Data.Set as Set
import qualified Data.Text.Encoding as E
import Data.CaseInsensitive (mk)
import Data.Functor.Identity
import Data.Proxy (Proxy (..))
import qualified Data.Map as Map
import Data.Text (Text)
import qualified Data.Text as T
import GHC.Exts (Constraint)
import GHC.TypeLits (KnownSymbol, symbolVal)
import Servant.API ((:<|>)(..),(:>), BasicAuth,
BasicAuthData, BuildHeadersTo(..),
Capture, contentType, Header,
Headers(..), HttpVersion, IsSecure,
MimeRender(..), MimeUnrender,
NoContent, QueryFlag, QueryParam,
QueryParams, Raw, ReflectMethod(..),
RemoteHost, ReqBody,
ToHttpApiData(..), Vault, Verb)
import qualified Servant.Auth as Auth
import Reflex.Dom.Core (Dynamic, Event, Reflex,
XhrRequest(..),
XhrResponseHeaders(..),
XhrResponse(..), attachPromptlyDynWith, constDyn, ffor, fmapMaybe,
leftmost, performRequestsAsync,
)
------------------------------------------------------------------------------
import Servant.Common.BaseUrl (BaseUrl(..), Scheme(..), baseUrlWidget,
showBaseUrl,
SupportsServantReflex)
import Servant.Common.Req (ClientOptions(..),
defaultClientOptions,
Req, ReqResult(..), QParam(..),
QueryPart(..), addHeader, authData,
defReq, evalResponse, prependToPathParts,
-- performRequestCT,
performRequestsCT,
-- performRequestNoBody,
performRequestsNoBody,
performSomeRequestsAsync,
qParamToQueryPart, reqBody,
reqSuccess, reqFailure,
reqMethod, respHeaders,
response,
reqTag,
qParams, withCredentials)
-- * Accessing APIs as a Client
-- | 'client' allows you to produce operations to query an API from a client.
--
-- > type MyApi = "books" :> Get '[JSON] [Book] -- GET /books
-- > :<|> "books" :> ReqBody '[JSON] Book :> Post '[JSON] Book -- POST /books
-- >
-- > myApi :: Proxy MyApi
-- > myApi = Proxy
-- >
-- > getAllBooks :: Event t l -> m (Event t (l, ReqResult [Book]))
-- > postNewBook :: Dynamic t (Maybe Book) -> Event t l
-- -> m (Event t (l, ReqResult Book)))
-- > (getAllBooks :<|> postNewBook) = client myApi host
-- > where host = constDyn $ BaseUrl Http "localhost" 8080
client
:: (HasClient t m layout tag)
=> Proxy layout
-> Proxy m
-> Proxy tag
-> Dynamic t BaseUrl
-> Client t m layout tag
client p q t baseurl = clientWithRoute p q t defReq baseurl defaultClientOptions
clientWithOpts
:: (HasClient t m layout tag)
=> Proxy layout
-> Proxy m
-> Proxy tag
-> Dynamic t BaseUrl
-> ClientOptions
-> Client t m layout tag
clientWithOpts p q t baseurl = clientWithRoute p q t defReq baseurl
-- | Like 'clientWithOpts' but allows passing a function which will process the
-- result event in some way. This can be used to handle errors in a uniform way
-- across call sites.
clientWithOptsAndResultHandler
:: (HasClient t m layout tag)
=> Proxy layout
-> Proxy m
-> Proxy tag
-> Dynamic t BaseUrl
-> ClientOptions
-> (forall a. Event t (ReqResult tag a) -> m (Event t (ReqResult tag a)))
-> Client t m layout tag
clientWithOptsAndResultHandler p q t = clientWithRouteAndResultHandler p q t defReq
-- | This class lets us define how each API combinator
-- influences the creation of an HTTP request. It's mostly
-- an internal class, you can just use 'client'.
class Monad m => HasClient t m layout (tag :: *) where
type Client t m layout tag :: *
clientWithRoute
:: Proxy layout
-> Proxy m
-> Proxy tag
-> Req t
-> Dynamic t BaseUrl
-> ClientOptions
-> Client t m layout tag
clientWithRoute l m t r b o = clientWithRouteAndResultHandler l m t r b o return
clientWithRouteAndResultHandler
:: Proxy layout
-> Proxy m
-> Proxy tag
-> Req t
-> Dynamic t BaseUrl
-> ClientOptions
-> (forall a. Event t (ReqResult tag a) -> m (Event t (ReqResult tag a)))
-> Client t m layout tag
instance (HasClient t m a tag, HasClient t m b tag) => HasClient t m (a :<|> b) tag where
type Client t m (a :<|> b) tag = Client t m a tag :<|> Client t m b tag
clientWithRouteAndResultHandler Proxy q pTag req baseurl opts wrap =
clientWithRouteAndResultHandler (Proxy :: Proxy a) q pTag req baseurl opts wrap :<|>
clientWithRouteAndResultHandler (Proxy :: Proxy b) q pTag req baseurl opts wrap
-- Capture. Example:
-- > type MyApi = "books" :> Capture "isbn" Text :> Get '[JSON] Book
-- >
-- > myApi :: Proxy MyApi = Proxy
-- >
-- > getBook :: SupportsServantReflex t m
-- => Dynamic t BaseUrl
-- -> Dynamic t (Maybe Text)
-- -> Event t l
-- -> m (Event t (l, ReqResult Book))
-- > getBook = client myApi (constDyn host)
instance (SupportsServantReflex t m, ToHttpApiData a, HasClient t m sublayout tag)
=> HasClient t m (Capture capture a :> sublayout) tag where
type Client t m (Capture capture a :> sublayout) tag =
Dynamic t (Either Text a) -> Client t m sublayout tag
clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap val =
clientWithRouteAndResultHandler
(Proxy :: Proxy sublayout) q t (prependToPathParts p req) baseurl opts wrap
where p = (fmap . fmap) (toUrlPiece) val
-- VERB (Returning content) --
instance {-# OVERLAPPABLE #-}
-- Note [Non-Empty Content Types]
(MimeUnrender ct a, ReflectMethod method, cts' ~ (ct ': cts), SupportsServantReflex t m
) => HasClient t m (Verb method status cts' a) tag where
type Client t m (Verb method status cts' a) tag =
Event t tag -> m (Event t (ReqResult tag a))
-- TODO how to access input types here?
-- ExceptT ServantError IO a
clientWithRouteAndResultHandler Proxy _ _ req baseurl opts wrap trigs =
wrap =<< fmap runIdentity <$> performRequestsCT (Proxy :: Proxy ct) method (constDyn $ Identity $ req') baseurl opts trigs
where method = E.decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
req' = req { reqMethod = method }
-- -- VERB (No content) --
instance {-# OVERLAPPING #-}
(ReflectMethod method, SupportsServantReflex t m) =>
HasClient t m (Verb method status cts NoContent) tag where
type Client t m (Verb method status cts NoContent) tag =
Event t tag -> m (Event t (ReqResult tag NoContent))
-- TODO: how to access input types here?
-- ExceptT ServantError IO NoContent
clientWithRouteAndResultHandler Proxy _ _ req baseurl opts wrap trigs =
wrap =<< fmap runIdentity <$> performRequestsNoBody method (constDyn $ Identity req) baseurl opts trigs
where method = E.decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
toHeaders :: BuildHeadersTo ls => ReqResult tag a -> ReqResult tag (Headers ls a)
toHeaders r =
let toBS = E.encodeUtf8
hdrs = maybe []
(\xhr -> fmap (\(h,v) -> (mk (toBS h), toBS v))
(Map.toList $ _xhrResponse_headers xhr))
(response r)
in ffor r $ \a -> Headers {getResponse = a ,getHeadersHList = buildHeadersTo hdrs}
class BuildHeaderKeysTo hs where
buildHeaderKeysTo :: Proxy hs -> [T.Text]
instance {-# OVERLAPPABLE #-} BuildHeaderKeysTo '[]
where buildHeaderKeysTo _ = []
instance {-# OVERLAPPABLE #-} (BuildHeaderKeysTo xs, KnownSymbol h)
=> BuildHeaderKeysTo ((Header h v) ': xs) where
buildHeaderKeysTo _ = T.pack (symbolVal (Proxy :: Proxy h)) : buildHeaderKeysTo (Proxy :: Proxy xs)
-- HEADERS Verb (Content) --
-- Headers combinator not treated in fully general case,
-- in order to deny instances for (Headers ls (Capture "id" Int)),
-- a combinator that wouldn't make sense
-- TODO Overlapping??
instance {-# OVERLAPPABLE #-}
-- Note [Non-Empty Content Types]
( MimeUnrender ct a, BuildHeadersTo ls, BuildHeaderKeysTo ls,
ReflectMethod method, cts' ~ (ct ': cts),
SupportsServantReflex t m
) => HasClient t m (Verb method status cts' (Headers ls a)) tag where
type Client t m (Verb method status cts' (Headers ls a)) tag =
Event t tag -> m (Event t (ReqResult tag (Headers ls a)))
clientWithRouteAndResultHandler Proxy _ _ req baseurl opts wrap trigs = do
let method = E.decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
resp <- fmap runIdentity <$> performRequestsCT (Proxy :: Proxy ct) method (constDyn $ Identity req') baseurl opts trigs
wrap $ toHeaders <$> resp
where req' = req { respHeaders =
OnlyHeaders (Set.fromList (buildHeaderKeysTo (Proxy :: Proxy ls)))
}
-- HEADERS Verb (No content) --
instance {-# OVERLAPPABLE #-}
( BuildHeadersTo ls, BuildHeaderKeysTo ls, ReflectMethod method,
SupportsServantReflex t m
) => HasClient t m (Verb method status cts (Headers ls NoContent)) tag where
type Client t m (Verb method status cts (Headers ls NoContent)) tag
= Event t tag -> m (Event t (ReqResult tag (Headers ls NoContent)))
clientWithRouteAndResultHandler Proxy _ _ req baseurl opts wrap trigs = do
let method = E.decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
resp <- fmap runIdentity <$> performRequestsNoBody method (constDyn $ Identity req') baseurl opts trigs
wrap $ toHeaders <$> resp
where req' = req {respHeaders =
OnlyHeaders (Set.fromList (buildHeaderKeysTo (Proxy :: Proxy ls)))
}
-- HEADER
-- > newtype Referer = Referer { referrer :: Text }
-- > deriving (Eq, Show, Generic, FromText, ToHttpApiData)
-- >
-- > -- GET /view-my-referer
-- > type MyApi = "view-my-referer" :> Header "Referer" Referer :> Get '[JSON] Referer
-- >
-- >
-- > viewReferer :: Maybe Referer -> ExceptT String IO Book
-- > viewReferer = client myApi host
-- > where host = BaseUrl Http "localhost" 8080
-- > -- then you can just use "viewRefer" to query that endpoint
-- > -- specifying Nothing or e.g Just "http://haskell.org/" as arguments
instance (KnownSymbol sym, ToHttpApiData a,
HasClient t m sublayout tag, SupportsServantReflex t m)
=> HasClient t m (Header sym a :> sublayout) tag where
type Client t m (Header sym a :> sublayout) tag =
Dynamic t (Either Text a) -> Client t m sublayout tag
clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap eVal =
clientWithRouteAndResultHandler
(Proxy :: Proxy sublayout) q t
(Servant.Common.Req.addHeader hname eVal req)
baseurl opts wrap
where hname = T.pack $ symbolVal (Proxy :: Proxy sym)
-- | Using a 'HttpVersion' combinator in your API doesn't affect the client
-- functions.
instance HasClient t m sublayout tag
=> HasClient t m (HttpVersion :> sublayout) tag where
type Client t m (HttpVersion :> sublayout) tag =
Client t m sublayout tag
clientWithRouteAndResultHandler Proxy =
clientWithRouteAndResultHandler (Proxy :: Proxy sublayout)
-- | If you use a 'QueryParam' in one of your endpoints in your API,
-- the corresponding querying function will automatically take
-- an additional argument of the type specified by your 'QueryParam',
-- enclosed in Maybe.
--
-- If you give Nothing, nothing will be added to the query string.
--
-- If you give a non-'Nothing' value, this function will take care
-- of inserting a textual representation of this value in the query string.
--
-- You can control how values for your type are turned into
-- text by specifying a 'ToHttpApiData' instance for your type.
--
-- Example:
--
-- > type MyApi = "books" :> QueryParam "author" Text :> Get '[JSON] [Book]
-- >
-- > myApi :: Proxy MyApi
-- > myApi = Proxy
-- >
-- > getBooksBy :: Maybe Text -> ExceptT String IO [Book]
-- > getBooksBy = client myApi host
-- > where host = BaseUrl Http "localhost" 8080
-- > -- then you can just use "getBooksBy" to query that endpoint.
-- > -- 'getBooksBy Nothing' for all books
-- > -- 'getBooksBy (Just "Isaac Asimov")' to get all books by Isaac Asimov
instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout tag, Reflex t)
=> HasClient t m (QueryParam sym a :> sublayout) tag where
type Client t m (QueryParam sym a :> sublayout) tag =
Dynamic t (QParam a) -> Client t m sublayout tag
-- if mparam = Nothing, we don't add it to the query string
clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap mparam =
clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t
(req {qParams = paramPair : qParams req}) baseurl opts wrap
where pname = symbolVal (Proxy :: Proxy sym)
--p prm = QueryPartParam $ (fmap . fmap) (toQueryParam) prm
--paramPair = (T.pack pname, p mparam)
p prm = QueryPartParam $ fmap qParamToQueryPart prm -- (fmap . fmap) (unpack . toQueryParam) prm
paramPair = (T.pack pname, p mparam)
-- | If you use a 'QueryParams' in one of your endpoints in your API,
-- the corresponding querying function will automatically take
-- an additional argument, a list of values of the type specified
-- by your 'QueryParams'.
--
-- If you give an empty list, nothing will be added to the query string.
--
-- Otherwise, this function will take care
-- of inserting a textual representation of your values in the query string,
-- under the same query string parameter name.
--
-- You can control how values for your type are turned into
-- text by specifying a 'ToHttpApiData' instance for your type.
--
-- Example:
--
-- > type MyApi = "books" :> QueryParams "authors" Text :> Get '[JSON] [Book]
-- >
-- > myApi :: Proxy MyApi
-- > myApi = Proxy
-- >
-- > getBooksBy :: [Text] -> ExceptT String IO [Book]
-- > getBooksBy = client myApi host
-- > where host = BaseUrl Http "localhost" 8080
-- > -- then you can just use "getBooksBy" to query that endpoint.
-- > -- 'getBooksBy []' for all books
-- > -- 'getBooksBy ["Isaac Asimov", "Robert A. Heinlein"]'
-- > -- to get all books by Asimov and Heinlein
instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout tag, Reflex t)
=> HasClient t m (QueryParams sym a :> sublayout) tag where
type Client t m (QueryParams sym a :> sublayout) tag =
Dynamic t [a] -> Client t m sublayout tag
clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap paramlist =
clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t req' baseurl opts wrap
where req' = req { qParams = (T.pack pname, params') : qParams req }
pname = symbolVal (Proxy :: Proxy sym)
params' = QueryPartParams $ (fmap . fmap) toQueryParam
paramlist
-- | If you use a 'QueryFlag' in one of your endpoints in your API,
-- the corresponding querying function will automatically take
-- an additional 'Bool' argument.
--
-- If you give 'False', nothing will be added to the query string.
--
-- Otherwise, this function will insert a value-less query string
-- parameter under the name associated to your 'QueryFlag'.
--
-- Example:
--
-- > type MyApi = "books" :> QueryFlag "published" :> Get '[JSON] [Book]
-- >
-- > myApi :: Proxy MyApi
-- > myApi = Proxy
-- >
-- > getBooks :: Bool -> ExceptT String IO [Book]
-- > getBooks = client myApi host
-- > where host = BaseUrl Http "localhost" 8080
-- > -- then you can just use "getBooks" to query that endpoint.
-- > -- 'getBooksBy False' for all books
-- > -- 'getBooksBy True' to only get _already published_ books
-- TODO Bring back
instance (KnownSymbol sym, HasClient t m sublayout tag, Reflex t)
=> HasClient t m (QueryFlag sym :> sublayout) tag where
type Client t m (QueryFlag sym :> sublayout) tag =
Dynamic t Bool -> Client t m sublayout tag
clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap flag =
clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t req' baseurl opts wrap
where req' = req { qParams = thisPair : qParams req }
thisPair = (T.pack pName, QueryPartFlag flag) :: (Text, QueryPart t)
pName = symbolVal (Proxy :: Proxy sym)
-- | Send a raw 'XhrRequest ()' directly to 'baseurl'
instance SupportsServantReflex t m => HasClient t m Raw tag where
type Client t m Raw tag = Dynamic t (Either Text (XhrRequest ()))
-> Event t tag
-> m (Event t (ReqResult tag ()))
clientWithRouteAndResultHandler _ _ _ _ baseurl _ wrap xhrs triggers = do
let xhrs' = liftA2 (\x path -> case x of
Left e -> Left e
Right jx -> Right $ jx { _xhrRequest_url = path <> _xhrRequest_url jx }
) xhrs (showBaseUrl <$> baseurl)
xhrs'' = attachPromptlyDynWith (flip (,)) xhrs' triggers :: Event t (tag, Either Text (XhrRequest ()))
badReq = fmapMaybe (\(t,x) -> either (Just . (t,)) (const Nothing) x) xhrs'' :: Event t (tag, Text)
okReq = fmapMaybe (\(t,x) -> either (const Nothing) (Just . (t,)) x) xhrs'' :: Event t (tag, XhrRequest ())
resps <- performRequestsAsync okReq
wrap $ leftmost [ uncurry RequestFailure <$> badReq
, evalResponse (const $ Right ()) <$> resps
]
-- | If you use a 'ReqBody' in one of your endpoints in your API,
-- the corresponding querying function will automatically take
-- an additional argument of the type specified by your 'ReqBody'.
-- That function will take care of encoding this argument as JSON and
-- of using it as the request body.
--
-- All you need is for your type to have a 'ToJSON' instance.
--
-- Example:
--
-- > type MyApi = "books" :> ReqBody '[JSON] Book :> Post '[JSON] Book
-- >
-- > myApi :: Proxy MyApi
-- > myApi = Proxy
-- >
-- > addBook :: Book -> ExceptT String IO Book
-- > addBook = client myApi host
-- > where host = BaseUrl Http "localhost" 8080
-- > -- then you can just use "addBook" to query that endpoint
instance (MimeRender ct a, HasClient t m sublayout tag, Reflex t)
=> HasClient t m (ReqBody (ct ': cts) a :> sublayout) tag where
type Client t m (ReqBody (ct ': cts) a :> sublayout) tag =
Dynamic t (Either Text a) -> Client t m sublayout tag
clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap body =
clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t req' baseurl opts wrap
where req' = req { reqBody = bodyBytesCT }
ctProxy = Proxy :: Proxy ct
ctString = T.pack $ show $ contentType ctProxy
bodyBytesCT = Just $ (fmap . fmap)
(\b -> (mimeRender ctProxy b, ctString))
body
-- | Make the querying function append @path@ to the request path.
instance (KnownSymbol path, HasClient t m sublayout tag, Reflex t) => HasClient t m (path :> sublayout) tag where
type Client t m (path :> sublayout) tag = Client t m sublayout tag
clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap =
clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t
(prependToPathParts (pure (Right $ T.pack p)) req) baseurl opts wrap
where p = symbolVal (Proxy :: Proxy path)
instance HasClient t m api tag => HasClient t m (Vault :> api) tag where
type Client t m (Vault :> api) tag = Client t m api tag
clientWithRouteAndResultHandler Proxy =
clientWithRouteAndResultHandler (Proxy :: Proxy api)
instance HasClient t m api tag => HasClient t m (RemoteHost :> api) tag where
type Client t m (RemoteHost :> api) tag = Client t m api tag
clientWithRouteAndResultHandler Proxy =
clientWithRouteAndResultHandler (Proxy :: Proxy api)
instance HasClient t m api tag => HasClient t m (IsSecure :> api) tag where
type Client t m (IsSecure :> api) tag = Client t m api tag
clientWithRouteAndResultHandler Proxy =
clientWithRouteAndResultHandler (Proxy :: Proxy api)
instance (HasClient t m api tag, Reflex t)
=> HasClient t m (BasicAuth realm usr :> api) tag where
type Client t m (BasicAuth realm usr :> api) tag = Dynamic t (Maybe BasicAuthData)
-> Client t m api tag
clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap authdata =
clientWithRouteAndResultHandler (Proxy :: Proxy api) q t req' baseurl opts wrap
where
req' = req { authData = Just authdata }
-- instance HasClient t m subapi =>
-- HasClient t m (WithNamedConfig name config subapi) where
-- type Client t m (WithNamedConfig name config subapi) = Client t m subapi
-- clientWithRoute Proxy q = clientWithRoute (Proxy :: Proxy subapi) q
{- Note [Non-Empty Content Types]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Rather than have
instance (..., cts' ~ (ct ': cts)) => ... cts' ...
It may seem to make more sense to have:
instance (...) => ... (ct ': cts) ...
But this means that if another instance exists that does *not* require
non-empty lists, but is otherwise more specific, no instance will be overall
more specific. This in turn generally means adding yet another instance (one
for empty and one for non-empty lists).
-}
-- SUPPORT FOR servant-auth --
-- For JavaScript clients we should be sending/storing JSON web tokens in a
-- way that is inaccessible to JavaScript.
--
-- For @servant-auth@ this is done with HTTP-only cookies. In a Reflex-DOM
-- app this means the @servant-auth@ client should only verify that the API
-- supports Cookie-based authentication but do nothing with the token
-- directly.
-- @HasCookieAuth auths@ is nominally a redundant constraint, but ensures
-- we're not trying to rely on cookies when the API does not use them.
instance (HasCookieAuth auths, HasClient t m api tag) => HasClient t m (Auth.Auth auths a :> api) tag where
type Client t m (Auth.Auth auths a :> api) tag = Client t m api tag
clientWithRouteAndResultHandler Proxy = clientWithRouteAndResultHandler (Proxy :: Proxy api)
type family HasCookieAuth xs :: Constraint where
HasCookieAuth (Auth.Cookie ': xs) = ()
HasCookieAuth (x ': xs) = HasCookieAuth xs
HasCookieAuth '[] = CookieAuthNotEnabled
class CookieAuthNotEnabled