@@ -1,16 +1,23 @@
1−{-# LANGUAGE CPP #-}
2−{-# LANGUAGE DataKinds #-}
3−{-# LANGUAGE FlexibleContexts #-}
4−{-# LANGUAGE FlexibleInstances #-}
5−{-# LANGUAGE InstanceSigs #-}
6−{-# LANGUAGE OverloadedStrings #-}
7−{-# LANGUAGE PolyKinds #-}
8−{-# LANGUAGE ScopedTypeVariables #-}
9−{-# LANGUAGE TupleSections #-}
10−{-# LANGUAGE TypeFamilies #-}
11−{-# LANGUAGE TypeOperators #-}
12−{-# LANGUAGE UndecidableInstances #-}
13−{-# LANGUAGE MultiParamTypeClasses #-}
1+{-# LANGUAGE AllowAmbiguousTypes #-}
2+{-# LANGUAGE CPP #-}
3+{-# LANGUAGE DataKinds #-}
4+{-# LANGUAGE FlexibleContexts #-}
5+{-# LANGUAGE FlexibleInstances #-}
6+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
7+{-# LANGUAGE InstanceSigs #-}
8+{-# LANGUAGE MultiParamTypeClasses #-}
9+{-# LANGUAGE OverloadedStrings #-}
10+{-# LANGUAGE PolyKinds #-}
11+{-# LANGUAGE Rank2Types #-}
12+{-# LANGUAGE ScopedTypeVariables #-}
13+{-# LANGUAGE TupleSections #-}
14+{-# LANGUAGE TypeFamilies #-}
15+{-# LANGUAGE TypeOperators #-}
16+{-# LANGUAGE UndecidableInstances #-}
17+
18+#if MIN_VERSION_base(4,9,0)
19+{-# OPTIONS_GHC -fno-warn-redundant-constraints #-}
20+#endif
1421
1522-- #include "overlapping-compat.h"
1623-- | This module provides 'client' which can automatically generate
@@ -18,23 +25,71 @@
1825-- API.
1926module Servant.Reflex
2027 ( client
21− , HasClient(..)
28+ , clientWithOpts
29+ , clientWithOptsAndResultHandler
30+ , clientWithRoute
31+ , clientWithRouteAndResultHandler
32+ , BuildHeaderKeysTo(..)
33+ , toHeaders
34+ , HasClient
35+ , Client
2236 , module Servant.Common.Req
2337 , module Servant.Common.BaseUrl
2438 ) where
2539
40+------------------------------------------------------------------------------
2641import Control.Applicative
27−import Data.Proxy
28−import Data.String.Conversions
29−import Data.Text (Text)
30−import qualified Data.Text as T
31−import Data.Text.Encoding
32−import GHC.TypeLits
33−import Servant.API
34−import Servant.Common.BaseUrl
35−import Servant.Common.Req
36−import Reflex
37−import Reflex.Dom
42+import qualified Data.CaseInsensitive as CI
43+import Data.Functor.Identity
44+import qualified Data.Map as Map
45+import Data.Monoid ((<>))
46+import Data.Proxy (Proxy (..))
47+import qualified Data.Set as Set
48+import Data.Text (Text)
49+import qualified Data.Text as T
50+import qualified Data.Text.Encoding as E
51+import GHC.Exts (Constraint)
52+import GHC.TypeLits (KnownSymbol, symbolVal)
53+import Servant.API ((:<|>) (..), (:>), BasicAuth,
54+ BasicAuthData, BuildHeadersTo (..),
55+ Capture, Header, Headers (..),
56+ HttpVersion, IsSecure,
57+ MimeRender (..), MimeUnrender,
58+ NoContent, QueryFlag, QueryParam,
59+ QueryParams, Raw, ReflectMethod (..),
60+ RemoteHost, ReqBody,
61+ ToHttpApiData (..), Vault, Verb,
62+ contentType)
63+import Servant.API.Description (Summary)
64+import qualified Servant.Auth as Auth
65+
66+import Reflex.Dom.Core (Dynamic, Event, Reflex,
67+ XhrRequest (..), XhrResponse (..),
68+ XhrResponseHeaders (..),
69+ attachPromptlyDynWith, constDyn, ffor,
70+ fmapMaybe, leftmost,
71+ performRequestsAsync)
72+------------------------------------------------------------------------------
73+import Servant.Common.BaseUrl (BaseUrl(..), Scheme(..), baseUrlWidget,
74+ showBaseUrl,
75+ SupportsServantReflex)
76+import Servant.Common.Req (ClientOptions(..),
77+ defaultClientOptions,
78+ Req, ReqResult(..), QParam(..),
79+ QueryPart(..), addHeader, authData,
80+ defReq, evalResponse, prependToPathParts,
81+ -- performRequestCT,
82+ performRequestsCT,
83+ -- performRequestNoBody,
84+ performRequestsNoBody,
85+ performSomeRequestsAsync,
86+ qParamToQueryPart, reqBody,
87+ reqSuccess, reqFailure,
88+ reqMethod, respHeaders,
89+ response,
90+ reqTag,
91+ qParams, withCredentials)
92+
3893
3994-- * Accessing APIs as a Client
4095
@@ -46,116 +101,191 @@ import Reflex.Dom
46101-- > myApi :: Proxy MyApi
47102-- > myApi = Proxy
48103-- >
49−-- > getAllBooks :: Event t () -> m (Event t (Either XhrError ((),[Book])))
50−-- > postNewBook :: Dynamic t (Maybe Book) -> Event t ()
51−-- -> m (Event t (Either XhrError (Book,Book)))
104+-- > getAllBooks :: Event t l -> m (Event t (l, ReqResult [Book]))
105+-- > postNewBook :: Dynamic t (Maybe Book) -> Event t l
106+-- > -> m (Event t (l, ReqResult Book)))
52107-- > (getAllBooks :<|> postNewBook) = client myApi host
53108-- > where host = constDyn $ BaseUrl Http "localhost" 8080
54−client :: (HasClient t m layout, MonadWidget t m)
55− => Proxy layout -> Proxy m -> Dynamic t BaseUrl -> Client t m layout
56−client p q baseurl = clientWithRoute p q defReq baseurl
109+client
110+ :: (HasClient t m layout tag)
111+ => Proxy layout
112+ -> Proxy m
113+ -> Proxy tag
114+ -> Dynamic t BaseUrl
115+ -> Client t m layout tag
116+client p q t baseurl = clientWithRoute p q t defReq baseurl defaultClientOptions
117+
118+clientWithOpts
119+ :: (HasClient t m layout tag)
120+ => Proxy layout
121+ -> Proxy m
122+ -> Proxy tag
123+ -> Dynamic t BaseUrl
124+ -> ClientOptions
125+ -> Client t m layout tag
126+clientWithOpts p q t baseurl = clientWithRoute p q t defReq baseurl
127+
128+-- | Like 'clientWithOpts' but allows passing a function which will process the
129+-- result event in some way. This can be used to handle errors in a uniform way
130+-- across call sites.
131+clientWithOptsAndResultHandler
132+ :: (HasClient t m layout tag)
133+ => Proxy layout
134+ -> Proxy m
135+ -> Proxy tag
136+ -> Dynamic t BaseUrl
137+ -> ClientOptions
138+ -> (forall a. Event t (ReqResult tag a) -> m (Event t (ReqResult tag a)))
139+ -> Client t m layout tag
140+clientWithOptsAndResultHandler p q t = clientWithRouteAndResultHandler p q t defReq
141+
57142
58143-- | This class lets us define how each API combinator
59144-- influences the creation of an HTTP request. It's mostly
60145-- an internal class, you can just use 'client'.
61−class HasClient t m layout where
62− type Client t m layout :: *
63− clientWithRoute :: Proxy layout -> Proxy m -> Req t -> Dynamic t BaseUrl -> Client t m layout
146+class Monad m => HasClient t m layout (tag :: *) where
147+ type Client t m layout tag :: *
148+ clientWithRoute
149+ :: Proxy layout
150+ -> Proxy m
151+ -> Proxy tag
152+ -> Req t
153+ -> Dynamic t BaseUrl
154+ -> ClientOptions
155+ -> Client t m layout tag
156+ clientWithRoute l m t r b o = clientWithRouteAndResultHandler l m t r b o return
157+
158+ clientWithRouteAndResultHandler
159+ :: Proxy layout
160+ -> Proxy m
161+ -> Proxy tag
162+ -> Req t
163+ -> Dynamic t BaseUrl
164+ -> ClientOptions
165+ -> (forall a. Event t (ReqResult tag a) -> m (Event t (ReqResult tag a)))
166+ -> Client t m layout tag
167+
168+
169+instance (HasClient t m a tag, HasClient t m b tag) => HasClient t m (a :<|> b) tag where
170+ type Client t m (a :<|> b) tag = Client t m a tag :<|> Client t m b tag
171+
172+ clientWithRouteAndResultHandler Proxy q pTag req baseurl opts wrap =
173+ clientWithRouteAndResultHandler (Proxy :: Proxy a) q pTag req baseurl opts wrap :<|>
174+ clientWithRouteAndResultHandler (Proxy :: Proxy b) q pTag req baseurl opts wrap
64175
65176
66−instance (HasClient t m a, HasClient t m b) => HasClient t m (a :<|> b) where
67− type Client t m (a :<|> b) = Client t m a :<|> Client t m b
68− clientWithRoute Proxy q req baseurl =
69− clientWithRoute (Proxy :: Proxy a) q req baseurl :<|>
70− clientWithRoute (Proxy :: Proxy b) q req baseurl
71−
72177-- Capture. Example:
73178-- > type MyApi = "books" :> Capture "isbn" Text :> Get '[JSON] Book
74179-- >
75180-- > myApi :: Proxy MyApi = Proxy
76181-- >
77−-- > getBook :: MonadWidget t m
182+-- > getBook :: SupportsServantReflex t m
78183-- => Dynamic t BaseUrl
79184-- -> Dynamic t (Maybe Text)
80−-- -> Event t ()
81−-- -> m (Event t (Either XhrError (Text, Book)))
185+-- -> Event t l
186+-- -> m (Event t (l, ReqResult Book))
82187-- > getBook = client myApi (constDyn host)
83−instance (MonadWidget t m, KnownSymbol capture, ToHttpApiData a, HasClient t m sublayout)
84− => HasClient t m (Capture capture a :> sublayout) where
85188
86− type Client t m (Capture capture a :> sublayout) =
87− Dynamic t (Either Text a) -> Client t m sublayout
189+instance (SupportsServantReflex t m, ToHttpApiData a, HasClient t m sublayout tag)
190+ => HasClient t m (Capture capture a :> sublayout) tag where
88191
89− clientWithRoute Proxy q req baseurl val =
90− clientWithRoute (Proxy :: Proxy sublayout)
91− q
92− (prependToPathParts p req)
93− baseurl
192+ type Client t m (Capture capture a :> sublayout) tag =
193+ Dynamic t (Either Text a) -> Client t m sublayout tag
94194
195+ clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap val =
196+ clientWithRouteAndResultHandler
197+ (Proxy :: Proxy sublayout) q t (prependToPathParts p req) baseurl opts wrap
95198 where p = (fmap . fmap) (toUrlPiece) val
96199
200+
97201-- VERB (Returning content) --
98202instance {-# OVERLAPPABLE #-}
99203 -- Note [Non-Empty Content Types]
100− (MimeUnrender ct a, ReflectMethod method, cts' ~ (ct ': cts), MonadWidget t m
101− ) => HasClient t m (Verb method status cts' a) where
102− type Client t m (Verb method status cts' a) =
103− Event t () -> m (Event t (ReqResult a))
204+ (MimeUnrender ct a, ReflectMethod method, cts' ~ (ct ': cts), SupportsServantReflex t m
205+ ) => HasClient t m (Verb method status cts' a) tag where
206+ type Client t m (Verb method status cts' a) tag =
207+ Event t tag -> m (Event t (ReqResult tag a))
104208 -- TODO how to access input types here?
105209 -- ExceptT ServantError IO a
106− clientWithRoute Proxy _ req baseurl =
107− performRequestCT (Proxy :: Proxy ct) method req' baseurl
108− where method = decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
210+ clientWithRouteAndResultHandler Proxy _ _ req baseurl opts wrap trigs =
211+ wrap =<< fmap runIdentity <$> performRequestsCT (Proxy :: Proxy ct) method (constDyn $ Identity $ req') baseurl opts trigs
212+ where method = E.decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
109213 req' = req { reqMethod = method }
110214
215+
111216-- -- VERB (No content) --
112217instance {-# OVERLAPPING #-}
113− (ReflectMethod method, MonadWidget t m) =>
114− HasClient t m (Verb method status cts NoContent) where
115− type Client t m (Verb method status cts NoContent) =
116− Event t () -> m (Event t (ReqResult NoContent))
218+ (ReflectMethod method, SupportsServantReflex t m) =>
219+ HasClient t m (Verb method status cts NoContent) tag where
220+ type Client t m (Verb method status cts NoContent) tag =
221+ Event t tag -> m (Event t (ReqResult tag NoContent))
117222 -- TODO: how to access input types here?
118223 -- ExceptT ServantError IO NoContent
119− clientWithRoute Proxy _ req baseurl =
120− performRequestNoBody method req baseurl
121− where method = decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
122−
123−-- -- HEADERS Verb (Content) --
124−-- -- Headers combinator not treated in fully general case,
125−-- -- in order to deny instances for (Headers ls (Capture "id" Int)),
126−-- -- a combinator that wouldn't make sense
127−-- -- TODO Overlapping??
128−-- instance {-# OVERLAPPABLE #-}
129−-- -- Note [Non-Empty Content Types]
130−-- ( MimeUnrender ct a, BuildHeadersTo ls,
131−-- ReflectMethod method, cts' ~ (ct ': cts),
132−-- MonadWidget t m
133−-- ) => HasClient t m (Verb method status cts' (Headers ls a)) where
134−-- type Client t m (Verb method status cts' (Headers ls a))
135−-- = Event t () -> m (Event t (Maybe a, XhrResponse))
136−-- -- ExceptT ServantError IO (Headers ls a)
137−-- clientWithRoute Proxy req baseurl = do
138−-- let method = reflectMethod (Proxy :: Proxy method)
139−-- (hdrs, resp) <- performRequestCT (Proxy :: Proxy ct) method req baseurl
140−-- return $ Headers { getResponse = resp
141−-- , getHeadersHList = buildHeadersTo hdrs
142−-- }
224+ clientWithRouteAndResultHandler Proxy _ _ req baseurl opts wrap trigs =
225+ wrap =<< fmap runIdentity <$> performRequestsNoBody method (constDyn $ Identity req) baseurl opts trigs
226+ where method = E.decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
227+
228+
229+toHeaders :: BuildHeadersTo ls => ReqResult tag a -> ReqResult tag (Headers ls a)
230+toHeaders r =
231+ let hdrs = maybe []
232+ (\xhr -> fmap (\(h,v) -> (CI.map E.encodeUtf8 h, E.encodeUtf8 v))
233+ (Map.toList $ _xhrResponse_headers xhr))
234+ (response r)
235+ in ffor r $ \a -> Headers {getResponse = a ,getHeadersHList = buildHeadersTo hdrs}
143236
237+
238+class BuildHeaderKeysTo hs where
239+ buildHeaderKeysTo :: Proxy hs -> [CI.CI T.Text]
240+
241+instance {-# OVERLAPPABLE #-} BuildHeaderKeysTo '[]
242+ where buildHeaderKeysTo _ = []
243+
244+instance {-# OVERLAPPABLE #-} (BuildHeaderKeysTo xs, KnownSymbol h)
245+ => BuildHeaderKeysTo ((Header h v) ': xs) where
246+ buildHeaderKeysTo _ =
247+ let
248+ thisKey = CI.mk $ T.pack (symbolVal (Proxy :: Proxy h))
249+ in thisKey : buildHeaderKeysTo (Proxy :: Proxy xs)
250+
251+
252+-- HEADERS Verb (Content) --
253+-- Headers combinator not treated in fully general case,
254+-- in order to deny instances for (Headers ls (Capture "id" Int)),
255+-- a combinator that wouldn't make sense
144256-- TODO Overlapping??
145−-- -- HEADERS Verb (No content) --
146−-- instance {-# OVERLAPPABLE #-}
147−-- ( BuildHeadersTo ls, ReflectMethod method,
148−-- MonadWidget t m
149−-- ) => HasClient t m (Verb method status cts (Headers ls NoContent)) where
150−-- type Client t m (Verb method status cts (Headers ls NoContent))
151−-- = Event t () -> m (Event t XhrResponse)
152−-- -- ExceptT ServantError IO (Headers ls NoContent)
153−-- clientWithRoute Proxy req baseurl = do
154−-- let method = reflectMethod (Proxy :: Proxy method)
155−-- hdrs <- performRequestNoBody method req baseurl
156−-- return $ Headers { getResponse = NoContent
157−-- , getHeadersHList = buildHeadersTo hdrs
158−-- }
257+instance {-# OVERLAPPABLE #-}
258+ -- Note [Non-Empty Content Types]
259+ ( MimeUnrender ct a, BuildHeadersTo ls, BuildHeaderKeysTo ls,
260+ ReflectMethod method, cts' ~ (ct ': cts),
261+ SupportsServantReflex t m
262+ ) => HasClient t m (Verb method status cts' (Headers ls a)) tag where
263+ type Client t m (Verb method status cts' (Headers ls a)) tag =
264+ Event t tag -> m (Event t (ReqResult tag (Headers ls a)))
265+ clientWithRouteAndResultHandler Proxy _ _ req baseurl opts wrap trigs = do
266+ let method = E.decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
267+ resp <- fmap runIdentity <$> performRequestsCT (Proxy :: Proxy ct) method (constDyn $ Identity req') baseurl opts trigs
268+ wrap $ toHeaders <$> resp
269+ where req' = req { respHeaders =
270+ OnlyHeaders (Set.fromList (buildHeaderKeysTo (Proxy :: Proxy ls)))
271+ }
272+
273+
274+-- HEADERS Verb (No content) --
275+instance {-# OVERLAPPABLE #-}
276+ ( BuildHeadersTo ls, BuildHeaderKeysTo ls, ReflectMethod method,
277+ SupportsServantReflex t m
278+ ) => HasClient t m (Verb method status cts (Headers ls NoContent)) tag where
279+ type Client t m (Verb method status cts (Headers ls NoContent)) tag
280+ = Event t tag -> m (Event t (ReqResult tag (Headers ls NoContent)))
281+ clientWithRouteAndResultHandler Proxy _ _ req baseurl opts wrap trigs = do
282+ let method = E.decodeUtf8 $ reflectMethod (Proxy :: Proxy method)
283+ resp <- fmap runIdentity <$> performRequestsNoBody method (constDyn $ Identity req') baseurl opts trigs
284+ wrap $ toHeaders <$> resp
285+ where req' = req {respHeaders =
286+ OnlyHeaders (Set.fromList (buildHeaderKeysTo (Proxy :: Proxy ls)))
287+ }
288+
159289
160290
161291-- HEADER
@@ -172,32 +302,45 @@ instance {-# OVERLAPPING #-}
172302-- > -- then you can just use "viewRefer" to query that endpoint
173303-- > -- specifying Nothing or e.g Just "http://haskell.org/" as arguments
174304instance (KnownSymbol sym, ToHttpApiData a,
175− HasClient t m sublayout, MonadWidget t m)
176− => HasClient t m (Header sym a :> sublayout) where
177−
178− type Client t m (Header sym a :> sublayout) =
179− Dynamic t (Either Text a) -> Client t m sublayout
180−
181− clientWithRoute Proxy q req baseurl _ =
182− clientWithRoute (Proxy :: Proxy sublayout)
183− q
184− req
185− -- (maybe req -- TODO Need to pass the header in
186− -- (\value -> Servant.Common.Req.addHeader hname value req)
187− -- mval
188− -- )
189− baseurl
305+ HasClient t m sublayout tag, SupportsServantReflex t m)
306+ => HasClient t m (Header sym a :> sublayout) tag where
307+
308+ type Client t m (Header sym a :> sublayout) tag =
309+ Dynamic t (Either Text a) -> Client t m sublayout tag
310+
311+ clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap eVal =
312+ clientWithRouteAndResultHandler
313+ (Proxy :: Proxy sublayout) q t
314+ (Servant.Common.Req.addHeader hname eVal req)
315+ baseurl opts wrap
316+ where hname = T.pack $ symbolVal (Proxy :: Proxy sym)
317+
318+
319+
190320
191321-- | Using a 'HttpVersion' combinator in your API doesn't affect the client
192322-- functions.
193−instance HasClient t m sublayout
194− => HasClient t m (HttpVersion :> sublayout) where
323+instance HasClient t m sublayout tag
324+ => HasClient t m (HttpVersion :> sublayout) tag where
325+
326+ type Client t m (HttpVersion :> sublayout) tag =
327+ Client t m sublayout tag
328+
329+ clientWithRouteAndResultHandler Proxy =
330+ clientWithRouteAndResultHandler (Proxy :: Proxy sublayout)
331+
332+-- | Using a 'Summary' combinator in your API doesn't affect the client
333+-- functions.
334+instance (HasClient t m sublayout tag, KnownSymbol sym)
335+ => HasClient t m (Summary sym :> sublayout) tag where
336+
337+ type Client t m (Summary sym :> sublayout) tag =
338+ Client t m sublayout tag
339+
340+ clientWithRouteAndResultHandler Proxy =
341+ clientWithRouteAndResultHandler (Proxy :: Proxy sublayout)
195342
196− type Client t m (HttpVersion :> sublayout) =
197− Client t m sublayout
198343
199− clientWithRoute Proxy q =
200− clientWithRoute (Proxy :: Proxy sublayout) q
201344
202345
203346-- | If you use a 'QueryParam' in one of your endpoints in your API,
@@ -226,17 +369,16 @@ instance HasClient t m sublayout
226369-- > -- then you can just use "getBooksBy" to query that endpoint.
227370-- > -- 'getBooksBy Nothing' for all books
228371-- > -- 'getBooksBy (Just "Isaac Asimov")' to get all books by Isaac Asimov
229−instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout, Reflex t)
230− => HasClient t m (QueryParam sym a :> sublayout) where
372+instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout tag, Reflex t)
373+ => HasClient t m (QueryParam sym a :> sublayout) tag where
231374
232− type Client t m (QueryParam sym a :> sublayout) =
233− -- TODO (Maybe a), or (Maybe (Maybe a))? (should the user be able to send a Nothing)
234− Dynamic t (QParam a) -> Client t m sublayout
375+ type Client t m (QueryParam sym a :> sublayout) tag =
376+ Dynamic t (QParam a) -> Client t m sublayout tag
235377
236378 -- if mparam = Nothing, we don't add it to the query string
237− clientWithRoute Proxy q req baseurl mparam =
238− clientWithRoute (Proxy :: Proxy sublayout) q
239− (req {qParams = paramPair : qParams req}) baseurl
379+ clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap mparam =
380+ clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t
381+ (req {qParams = paramPair : qParams req}) baseurl opts wrap
240382
241383 where pname = symbolVal (Proxy :: Proxy sym)
242384 --p prm = QueryPartParam $ (fmap . fmap) (toQueryParam) prm
@@ -244,6 +386,8 @@ instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout, Reflex t)
244386 p prm = QueryPartParam $ fmap qParamToQueryPart prm -- (fmap . fmap) (unpack . toQueryParam) prm
245387 paramPair = (T.pack pname, p mparam)
246388
389+
390+
247391-- | If you use a 'QueryParams' in one of your endpoints in your API,
248392-- the corresponding querying function will automatically take
249393-- an additional argument, a list of values of the type specified
@@ -272,21 +416,22 @@ instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout, Reflex t)
272416-- > -- 'getBooksBy []' for all books
273417-- > -- 'getBooksBy ["Isaac Asimov", "Robert A. Heinlein"]'
274418-- > -- to get all books by Asimov and Heinlein
275−instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout, Reflex t)
276− => HasClient t m (QueryParams sym a :> sublayout) where
419+instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout tag, Reflex t)
420+ => HasClient t m (QueryParams sym a :> sublayout) tag where
277421
278− type Client t m (QueryParams sym a :> sublayout) =
279− Dynamic t [a] -> Client t m sublayout
422+ type Client t m (QueryParams sym a :> sublayout) tag =
423+ Dynamic t [a] -> Client t m sublayout tag
280424
281− clientWithRoute Proxy q req baseurl paramlist =
282− clientWithRoute (Proxy :: Proxy sublayout) q req' baseurl
425+ clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap paramlist =
426+ clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t req' baseurl opts wrap
283427
284428 where req' = req { qParams = (T.pack pname, params') : qParams req }
285429 pname = symbolVal (Proxy :: Proxy sym)
286− params' = QueryPartParams $ (fmap . fmap) (toQueryParam)
430+ params' = QueryPartParams $ (fmap . fmap) toQueryParam
287431 paramlist
288432
289433
434+
290435-- | If you use a 'QueryFlag' in one of your endpoints in your API,
291436-- the corresponding querying function will automatically take
292437-- an additional 'Bool' argument.
@@ -311,49 +456,42 @@ instance (KnownSymbol sym, ToHttpApiData a, HasClient t m sublayout, Reflex t)
311456-- > -- 'getBooksBy True' to only get _already published_ books
312457
313458-- TODO Bring back
314−instance (KnownSymbol sym, HasClient t m sublayout, Reflex t)
315− => HasClient t m (QueryFlag sym :> sublayout) where
459+instance (KnownSymbol sym, HasClient t m sublayout tag, Reflex t)
460+ => HasClient t m (QueryFlag sym :> sublayout) tag where
316461
317− type Client t m (QueryFlag sym :> sublayout) =
318− Dynamic t Bool -> Client t m sublayout
462+ type Client t m (QueryFlag sym :> sublayout) tag =
463+ Dynamic t Bool -> Client t m sublayout tag
319464
320− clientWithRoute Proxy q req baseurl flag =
321− clientWithRoute (Proxy :: Proxy sublayout) q req' baseurl
465+ clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap flag =
466+ clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t req' baseurl opts wrap
322467
323468 where req' = req { qParams = thisPair : qParams req }
324469 thisPair = (T.pack pName, QueryPartFlag flag) :: (Text, QueryPart t)
325470 pName = symbolVal (Proxy :: Proxy sym)
326471
327472
328−-- | Pick a 'Method' and specify where the server you want to query is. You get
329−-- back the full `Response`.
330−-- TODO redo
331−instance (MonadWidget t m) => HasClient t m Raw where
332− type Client t m Raw = Dynamic t (Either Text (XhrRequest ()))
333− -> Event t ()
334− -> m (Event t (ReqResult ()))
335−
336− -- clientWithRoute :: Proxy Raw -> Proxy m -> Req -> BaseUrl -> Client t m Raw
337− clientWithRoute _ _ _ baseurl xhrs triggers = do
338− let xhrs' = liftA2 (\x path -> case x of
339− Left e -> Left e
340− Right jx -> Right $ jx {_xhrRequest_url = path
341− <> _xhrRequest_url jx})
342− xhrs
343− (showBaseUrl <$> baseurl)
344− reqs = tagDyn xhrs' triggers
345− okReq = fmapMaybe hush reqs
346− badReq = fmapMaybe tattle reqs
347− resps <- performRequestAsync okReq
348− return $ leftmost [fmap (ResponseSuccess () ) resps
349− ,fmap RequestFailure badReq]
350−
351−
352−hush :: Either e a -> Maybe a
353−hush = either (const Nothing) Just
354−
355−tattle :: Either e a -> Maybe e
356−tattle = either Just (const Nothing)
473+
474+-- | Send a raw 'XhrRequest ()' directly to 'baseurl'
475+instance SupportsServantReflex t m => HasClient t m Raw tag where
476+ type Client t m Raw tag = Dynamic t (Either Text (XhrRequest ()))
477+ -> Event t tag
478+ -> m (Event t (ReqResult tag ()))
479+
480+ clientWithRouteAndResultHandler _ _ _ _ baseurl _ wrap xhrs triggers = do
481+
482+ let xhrs' = liftA2 (\x path -> case x of
483+ Left e -> Left e
484+ Right jx -> Right $ jx { _xhrRequest_url = path <> _xhrRequest_url jx }
485+ ) xhrs (showBaseUrl <$> baseurl)
486+ xhrs'' = attachPromptlyDynWith (flip (,)) xhrs' triggers :: Event t (tag, Either Text (XhrRequest ()))
487+ badReq = fmapMaybe (\(t,x) -> either (Just . (t,)) (const Nothing) x) xhrs'' :: Event t (tag, Text)
488+ okReq = fmapMaybe (\(t,x) -> either (const Nothing) (Just . (t,)) x) xhrs'' :: Event t (tag, XhrRequest ())
489+
490+ resps <- performRequestsAsync okReq
491+ wrap $ leftmost [ uncurry RequestFailure <$> badReq
492+ , evalResponse (const $ Right ()) <$> resps
493+ ]
494+
357495
358496-- | If you use a 'ReqBody' in one of your endpoints in your API,
359497-- the corresponding querying function will automatically take
@@ -375,59 +513,64 @@ tattle = either Just (const Nothing)
375513-- > where host = BaseUrl Http "localhost" 8080
376514-- > -- then you can just use "addBook" to query that endpoint
377515
378−instance (MimeRender ct a, HasClient t m sublayout, Reflex t)
379− => HasClient t m (ReqBody (ct ': cts) a :> sublayout) where
516+instance (MimeRender ct a, HasClient t m sublayout tag, Reflex t)
517+ => HasClient t m (ReqBody (ct ': cts) a :> sublayout) tag where
380518
381− type Client t m (ReqBody (ct ': cts) a :> sublayout) =
382− Dynamic t (Either Text a) -> Client t m sublayout
519+ type Client t m (ReqBody (ct ': cts) a :> sublayout) tag =
520+ Dynamic t (Either Text a) -> Client t m sublayout tag
383521
384− clientWithRoute Proxy q req baseurl body =
385− clientWithRoute (Proxy :: Proxy sublayout) q req' baseurl
522+ clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap body =
523+ clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t req' baseurl opts wrap
386524 where req' = req { reqBody = bodyBytesCT }
387525 ctProxy = Proxy :: Proxy ct
388526 ctString = T.pack $ show $ contentType ctProxy
389− --ctString = decodeUtf8 . CI.original . M.mainType $ contentType ctProxy
390527 bodyBytesCT = Just $ (fmap . fmap)
391528 (\b -> (mimeRender ctProxy b, ctString))
392529 body
393530
531+
532+
394533-- | Make the querying function append @path@ to the request path.
395−instance (KnownSymbol path, HasClient t m sublayout, Reflex t) => HasClient t m (path :> sublayout) where
396− type Client t m (path :> sublayout) = Client t m sublayout
534+instance (KnownSymbol path, HasClient t m sublayout tag, Reflex t) => HasClient t m (path :> sublayout) tag where
535+ type Client t m (path :> sublayout) tag = Client t m sublayout tag
397536
398− clientWithRoute Proxy q req baseurl =
399− clientWithRoute (Proxy :: Proxy sublayout) q
400− (prependToPathParts (pure (Right $ T.pack p)) req)
401− baseurl
537+ clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap =
538+ clientWithRouteAndResultHandler (Proxy :: Proxy sublayout) q t
539+ (prependToPathParts (pure (Right $ T.pack p)) req) baseurl opts wrap
402540
403541 where p = symbolVal (Proxy :: Proxy path)
404542
405−instance HasClient t m api => HasClient t m (Vault :> api) where
406− type Client t m (Vault :> api) = Client t m api
407543
408− clientWithRoute Proxy q req baseurl =
409− clientWithRoute (Proxy :: Proxy api) q req baseurl
544+instance HasClient t m api tag => HasClient t m (Vault :> api) tag where
545+ type Client t m (Vault :> api) tag = Client t m api tag
546+
547+ clientWithRouteAndResultHandler Proxy =
548+ clientWithRouteAndResultHandler (Proxy :: Proxy api)
549+
410550
411−instance HasClient t m api => HasClient t m (RemoteHost :> api) where
412− type Client t m (RemoteHost :> api) = Client t m api
551+instance HasClient t m api tag => HasClient t m (RemoteHost :> api) tag where
552+ type Client t m (RemoteHost :> api) tag = Client t m api tag
413553
414− clientWithRoute Proxy q req baseurl =
415− clientWithRoute (Proxy :: Proxy api) q req baseurl
554+ clientWithRouteAndResultHandler Proxy =
555+ clientWithRouteAndResultHandler (Proxy :: Proxy api)
416556
417−instance HasClient t m api => HasClient t m (IsSecure :> api) where
418− type Client t m (IsSecure :> api) = Client t m api
419557
420− clientWithRoute Proxy q req baseurl =
421− clientWithRoute (Proxy :: Proxy api) q req baseurl
422558
423−instance (HasClient t m api, Reflex t)
424− => HasClient t m (BasicAuth realm usr :> api) where
559+instance HasClient t m api tag => HasClient t m (IsSecure :> api) tag where
560+ type Client t m (IsSecure :> api) tag = Client t m api tag
425561
426− type Client t m (BasicAuth realm usr :> api) = Dynamic t (Maybe BasicAuthData)
427− -> Client t m api
562+ clientWithRouteAndResultHandler Proxy =
563+ clientWithRouteAndResultHandler (Proxy :: Proxy api)
428564
429− clientWithRoute Proxy q req baseurl authdata =
430− clientWithRoute (Proxy :: Proxy api) q req' baseurl
565+
566+instance (HasClient t m api tag, Reflex t)
567+ => HasClient t m (BasicAuth realm usr :> api) tag where
568+
569+ type Client t m (BasicAuth realm usr :> api) tag = Dynamic t (Maybe BasicAuthData)
570+ -> Client t m api tag
571+
572+ clientWithRouteAndResultHandler Proxy q t req baseurl opts wrap authdata =
573+ clientWithRouteAndResultHandler (Proxy :: Proxy api) q t req' baseurl opts wrap
431574 where
432575 req' = req { authData = Just authdata }
433576
@@ -453,3 +596,30 @@ non-empty lists, but is otherwise more specific, no instance will be overall
453596more specific. This in turn generally means adding yet another instance (one
454597for empty and one for non-empty lists).
455598-}
599+
600+
601+-- SUPPORT FOR servant-auth --
602+
603+-- For JavaScript clients we should be sending/storing JSON web tokens in a
604+-- way that is inaccessible to JavaScript.
605+--
606+-- For @servant-auth@ this is done with HTTP-only cookies. In a Reflex-DOM
607+-- app this means the @servant-auth@ client should only verify that the API
608+-- supports Cookie-based authentication but do nothing with the token
609+-- directly.
610+
611+-- @HasCookieAuth auths@ is nominally a redundant constraint, but ensures
612+-- we're not trying to rely on cookies when the API does not use them.
613+instance (HasCookieAuth auths, HasClient t m api tag) => HasClient t m (Auth.Auth auths a :> api) tag where
614+
615+ type Client t m (Auth.Auth auths a :> api) tag = Client t m api tag
616+ clientWithRouteAndResultHandler Proxy = clientWithRouteAndResultHandler (Proxy :: Proxy api)
617+
618+
619+type family HasCookieAuth xs :: Constraint where
620+ HasCookieAuth (Auth.Cookie ': xs) = ()
621+ HasCookieAuth (x ': xs) = HasCookieAuth xs
622+ HasCookieAuth '[] = CookieAuthNotEnabled
623+
624+class CookieAuthNotEnabled
625+