917 lines
33 KiB
Haskell
917 lines
33 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-# LANGUAGE ConstraintKinds #-}
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{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE DefaultSignatures #-}
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{-# LANGUAGE DeriveGeneric #-}
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE FunctionalDependencies #-}
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{-# LANGUAGE MultiParamTypeClasses #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE PolyKinds #-}
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{-# LANGUAGE RecordWildCards #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TemplateHaskell #-}
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{-# LANGUAGE TupleSections #-}
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{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE TypeOperators #-}
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{-# LANGUAGE UndecidableInstances #-}
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#include "overlapping-compat.h"
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module Servant.Docs.Internal where
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import Control.Applicative
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import Control.Arrow (second)
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import Control.Lens (makeLenses, over, traversed, (%~),
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(&), (.~), (<>~), (^.), (|>))
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import qualified Control.Monad.Omega as Omega
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import Data.ByteString.Conversion (ToByteString, toByteString)
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import Data.ByteString.Lazy.Char8 (ByteString)
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import qualified Data.CaseInsensitive as CI
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import Data.Hashable (Hashable)
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import Data.HashMap.Strict (HashMap)
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import Data.List
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import Data.Maybe
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import Data.Monoid
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import Data.Ord (comparing)
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import Data.Proxy (Proxy(Proxy))
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import Data.String.Conversions (cs)
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import Data.Text (Text, pack, unpack)
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import GHC.Exts (Constraint)
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import GHC.Generics
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import GHC.TypeLits
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import Servant.API
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import Servant.API.ContentTypes
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import Servant.Utils.Links
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import qualified Data.HashMap.Strict as HM
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import qualified Data.Text as T
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import qualified Network.HTTP.Media as M
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import qualified Network.HTTP.Types as HTTP
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-- | Supported HTTP request methods
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data Method = DocDELETE -- ^ the DELETE method
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| DocGET -- ^ the GET method
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| DocPOST -- ^ the POST method
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| DocPUT -- ^ the PUT method
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deriving (Eq, Ord, Generic)
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instance Show Method where
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show DocGET = "GET"
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show DocPOST = "POST"
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show DocDELETE = "DELETE"
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show DocPUT = "PUT"
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instance Hashable Method
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-- | An 'Endpoint' type that holds the 'path' and the 'method'.
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--
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-- Gets used as the key in the 'API' hashmap. Modify 'defEndpoint'
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-- or any 'Endpoint' value you want using the 'path' and 'method'
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-- lenses to tweak.
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--
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-- @
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-- λ> 'defEndpoint'
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-- GET /
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-- λ> 'defEndpoint' & 'path' '<>~' ["foo"]
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-- GET /foo
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-- λ> 'defEndpoint' & 'path' '<>~' ["foo"] & 'method' '.~' 'DocPOST'
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-- POST /foo
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-- @
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data Endpoint = Endpoint
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{ _path :: [String] -- type collected
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, _method :: Method -- type collected
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} deriving (Eq, Ord, Generic)
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instance Show Endpoint where
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show (Endpoint p m) =
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show m ++ " " ++ showPath p
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-- |
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-- Render a path as a '/'-delimited string
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--
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showPath :: [String] -> String
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showPath [] = "/"
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showPath ps = concatMap ('/' :) ps
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-- | An 'Endpoint' whose path is `"/"` and whose method is 'DocGET'
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--
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-- Here's how you can modify it:
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--
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-- @
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-- λ> 'defEndpoint'
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-- GET /
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-- λ> 'defEndpoint' & 'path' '<>~' ["foo"]
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-- GET /foo
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-- λ> 'defEndpoint' & 'path' '<>~' ["foo"] & 'method' '.~' 'DocPOST'
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-- POST /foo
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-- @
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defEndpoint :: Endpoint
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defEndpoint = Endpoint [] DocGET
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instance Hashable Endpoint
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-- | Our API documentation type, a product of top-level information and a good
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-- old hashmap from 'Endpoint' to 'Action'
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data API = API
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{ _apiIntros :: [DocIntro]
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, _apiEndpoints :: HashMap Endpoint Action
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} deriving (Eq, Show)
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instance Monoid API where
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API a1 b1 `mappend` API a2 b2 = API (a1 <> a2) (b1 <> b2)
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mempty = API mempty mempty
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-- | An empty 'API'
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emptyAPI :: API
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emptyAPI = mempty
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-- | A type to represent captures. Holds the name of the capture
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-- and a description.
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--
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-- Write a 'ToCapture' instance for your captured types.
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data DocCapture = DocCapture
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{ _capSymbol :: String -- type supplied
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, _capDesc :: String -- user supplied
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} deriving (Eq, Ord, Show)
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-- | A type to represent a /GET/ parameter from the Query String. Holds its name,
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-- the possible values (leave empty if there isn't a finite number of them),
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-- and a description of how it influences the output or behavior.
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--
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-- Write a 'ToParam' instance for your GET parameter types
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data DocQueryParam = DocQueryParam
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{ _paramName :: String -- type supplied
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, _paramValues :: [String] -- user supplied
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, _paramDesc :: String -- user supplied
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, _paramKind :: ParamKind
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} deriving (Eq, Ord, Show)
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-- | An introductory paragraph for your documentation. You can pass these to
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-- 'docsWithIntros'.
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data DocIntro = DocIntro
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{ _introTitle :: String -- ^ Appears above the intro blob
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, _introBody :: [String] -- ^ Each String is a paragraph.
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} deriving (Eq, Show)
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instance Ord DocIntro where
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compare = comparing _introTitle
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-- | A type to represent extra notes that may be attached to an 'Action'.
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--
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-- This is intended to be used when writing your own HasDocs instances to
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-- add extra sections to your endpoint's documentation.
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data DocNote = DocNote
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{ _noteTitle :: String
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, _noteBody :: [String]
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} deriving (Eq, Ord, Show)
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-- | Type of extra information that a user may wish to "union" with their
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-- documentation.
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--
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-- These are intended to be built using extraInfo.
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-- Multiple ExtraInfo may be combined with the monoid instance.
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newtype ExtraInfo layout = ExtraInfo (HashMap Endpoint Action)
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instance Monoid (ExtraInfo a) where
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mempty = ExtraInfo mempty
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ExtraInfo a `mappend` ExtraInfo b =
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ExtraInfo $ HM.unionWith combineAction a b
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-- | Documentation options.
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data DocOptions = DocOptions
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{ _maxSamples :: Int -- ^ Maximum samples allowed.
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} deriving (Show)
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-- | Default documentation options.
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defaultDocOptions :: DocOptions
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defaultDocOptions = DocOptions
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{ _maxSamples = 5 }
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-- | Type of GET parameter:
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--
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-- - Normal corresponds to @QueryParam@, i.e your usual GET parameter
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-- - List corresponds to @QueryParams@, i.e GET parameters with multiple values
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-- - Flag corresponds to @QueryFlag@, i.e a value-less GET parameter
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data ParamKind = Normal | List | Flag
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deriving (Eq, Ord, Show)
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-- | A type to represent an HTTP response. Has an 'Int' status, a list of
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-- possible 'MediaType's, and a list of example 'ByteString' response bodies.
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-- Tweak 'defResponse' using the 'respStatus', 'respTypes' and 'respBody'
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-- lenses if you want.
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--
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-- If you want to respond with a non-empty response body, you'll most likely
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-- want to write a 'ToSample' instance for the type that'll be represented
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-- as encoded data in the response.
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--
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-- Can be tweaked with three lenses.
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--
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-- > λ> defResponse
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-- > Response {_respStatus = 200, _respTypes = [], _respBody = []}
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-- > λ> defResponse & respStatus .~ 204 & respBody .~ [("If everything goes well", "{ \"status\": \"ok\" }")]
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-- > Response {_respStatus = 204, _respTypes = [], _respBody = [("If everything goes well", "{ \"status\": \"ok\" }")]}
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data Response = Response
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{ _respStatus :: Int
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, _respTypes :: [M.MediaType]
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, _respBody :: [(Text, M.MediaType, ByteString)]
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, _respHeaders :: [HTTP.Header]
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} deriving (Eq, Ord, Show)
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-- | Default response: status code 200, no response body.
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--
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-- Can be tweaked with two lenses.
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--
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-- > λ> defResponse
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-- > Response {_respStatus = 200, _respBody = Nothing}
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-- > λ> defResponse & respStatus .~ 204 & respBody .~ Just "[]"
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-- > Response {_respStatus = 204, _respBody = Just "[]"}
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defResponse :: Response
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defResponse = Response
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{ _respStatus = 200
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, _respTypes = []
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, _respBody = []
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, _respHeaders = []
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}
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-- | A datatype that represents everything that can happen
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-- at an endpoint, with its lenses:
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--
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-- - List of captures ('captures')
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-- - List of GET parameters ('params')
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-- - What the request body should look like, if any is requested ('rqbody')
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-- - What the response should be if everything goes well ('response')
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--
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-- You can tweak an 'Action' (like the default 'defAction') with these lenses
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-- to transform an action and add some information to it.
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data Action = Action
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{ _captures :: [DocCapture] -- type collected + user supplied info
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, _headers :: [Text] -- type collected
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, _params :: [DocQueryParam] -- type collected + user supplied info
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, _notes :: [DocNote] -- user supplied
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, _mxParams :: [(String, [DocQueryParam])] -- type collected + user supplied info
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, _rqtypes :: [M.MediaType] -- type collected
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, _rqbody :: [(M.MediaType, ByteString)] -- user supplied
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, _response :: Response -- user supplied
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} deriving (Eq, Ord, Show)
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-- | Combine two Actions, we can't make a monoid as merging Response breaks the
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-- laws.
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--
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-- As such, we invent a non-commutative, left associative operation
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-- 'combineAction' to mush two together taking the response, body and content
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-- types from the very left.
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combineAction :: Action -> Action -> Action
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Action c h p n m ts body resp `combineAction` Action c' h' p' n' m' _ _ _ =
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Action (c <> c') (h <> h') (p <> p') (n <> n') (m <> m') ts body resp
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-- Default 'Action'. Has no 'captures', no GET 'params', expects
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-- no request body ('rqbody') and the typical response is 'defResponse'.
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--
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-- Tweakable with lenses.
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--
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-- > λ> defAction
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-- > Action {_captures = [], _headers = [], _params = [], _mxParams = [], _rqbody = Nothing, _response = Response {_respStatus = 200, _respBody = Nothing}}
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-- > λ> defAction & response.respStatus .~ 201
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-- > Action {_captures = [], _headers = [], _params = [], _mxParams = [], _rqbody = Nothing, _response = Response {_respStatus = 201, _respBody = Nothing}}
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defAction :: Action
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defAction =
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Action []
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[]
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[]
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[]
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[]
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[]
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[]
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defResponse
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-- | Create an API that's comprised of a single endpoint.
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-- 'API' is a 'Monoid', so combine multiple endpoints with
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-- 'mappend' or '<>'.
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single :: Endpoint -> Action -> API
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single e a = API mempty (HM.singleton e a)
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-- gimme some lenses
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makeLenses ''DocOptions
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makeLenses ''API
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makeLenses ''Endpoint
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makeLenses ''DocCapture
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makeLenses ''DocQueryParam
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makeLenses ''DocIntro
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makeLenses ''DocNote
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makeLenses ''Response
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makeLenses ''Action
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-- | Generate the docs for a given API that implements 'HasDocs'. This is the
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-- default way to create documentation.
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--
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-- prop> docs == docsWithOptions defaultDocOptions
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docs :: HasDocs layout => Proxy layout -> API
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docs p = docsWithOptions p defaultDocOptions
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-- | Generate the docs for a given API that implements 'HasDocs'.
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docsWithOptions :: HasDocs layout => Proxy layout -> DocOptions -> API
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docsWithOptions p = docsFor p (defEndpoint, defAction)
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-- | Closed type family, check if endpoint is exactly within API.
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-- We aren't sure what affects how an Endpoint is built up, so we require an
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-- exact match.
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type family IsIn (endpoint :: *) (api :: *) :: Constraint where
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IsIn e (sa :<|> sb) = Or (IsIn e sa) (IsIn e sb)
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IsIn (e :> sa) (e :> sb) = IsIn sa sb
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IsIn e e = ()
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-- | Create an 'ExtraInfo' that is garunteed to be within the given API layout.
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--
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-- The safety here is to ensure that you only add custom documentation to an
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-- endpoint that actually exists within your API.
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--
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-- > extra :: ExtraInfo TestApi
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-- > extra =
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-- > extraInfo (Proxy :: Proxy ("greet" :> Capture "greetid" Text :> Delete)) $
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-- > defAction & headers <>~ ["unicorns"]
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-- > & notes <>~ [ DocNote "Title" ["This is some text"]
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-- > , DocNote "Second secton" ["And some more"]
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-- > ]
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extraInfo :: (IsIn endpoint layout, HasLink endpoint, HasDocs endpoint)
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=> Proxy endpoint -> Action -> ExtraInfo layout
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extraInfo p action =
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let api = docsFor p (defEndpoint, defAction) defaultDocOptions
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-- Assume one endpoint, HasLink constraint means that we should only ever
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-- point at one endpoint.
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in ExtraInfo $ api ^. apiEndpoints & traversed .~ action
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-- | Generate documentation given some extra introductions (in the form of
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-- 'DocInfo') and some extra endpoint documentation (in the form of
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-- 'ExtraInfo'.
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--
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-- The extra introductions will be prepended to the top of the documentation,
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-- before the specific endpoint documentation. The extra endpoint documentation
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-- will be "unioned" with the automatically generated endpoint documentation.
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--
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-- You are expected to build up the ExtraInfo with the Monoid instance and
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-- 'extraInfo'.
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--
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-- If you only want to add an introduction, use 'docsWithIntros'.
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docsWith :: HasDocs layout => DocOptions -> [DocIntro] -> ExtraInfo layout -> Proxy layout -> API
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docsWith opts intros (ExtraInfo endpoints) p =
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docsWithOptions p opts
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& apiIntros <>~ intros
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& apiEndpoints %~ HM.unionWith (flip combineAction) endpoints
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-- | Generate the docs for a given API that implements 'HasDocs' with with any
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-- number of introduction(s)
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docsWithIntros :: HasDocs layout => [DocIntro] -> Proxy layout -> API
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docsWithIntros intros = docsWith defaultDocOptions intros mempty
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-- | The class that abstracts away the impact of API combinators
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-- on documentation generation.
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class HasDocs layout where
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docsFor :: Proxy layout -> (Endpoint, Action) -> DocOptions -> API
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-- | The class that lets us display a sample input or output in the supported
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-- content-types when generating documentation for endpoints that either:
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--
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-- - expect a request body, or
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-- - return a non empty response body
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--
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-- Example of an instance:
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--
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-- > {-# LANGUAGE DeriveGeneric #-}
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-- > {-# LANGUAGE OverloadedStrings #-}
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-- >
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-- > import Data.Aeson
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-- > import Data.Text
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-- > import GHC.Generics
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-- >
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-- > data Greet = Greet { _msg :: Text }
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-- > deriving (Generic, Show)
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-- >
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-- > instance FromJSON Greet
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-- > instance ToJSON Greet
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-- >
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-- > instance ToSample Greet where
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-- > toSamples _ = singleSample g
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-- >
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-- > where g = Greet "Hello, haskeller!"
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--
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-- You can also instantiate this class using 'toSamples' instead of
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-- 'toSample': it lets you specify different responses along with
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-- some context (as 'Text') that explains when you're supposed to
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-- get the corresponding response.
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class ToSample a where
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toSamples :: Proxy a -> [(Text, a)]
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default toSamples :: (Generic a, GToSample (Rep a)) => Proxy a -> [(Text, a)]
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toSamples = defaultSamples
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-- | Sample input or output (if there is at least one).
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toSample :: forall a. ToSample a => Proxy a -> Maybe a
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toSample _ = snd <$> listToMaybe (toSamples (Proxy :: Proxy a))
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-- | No samples.
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noSamples :: [(Text, a)]
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noSamples = empty
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-- | Single sample without description.
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singleSample :: a -> [(Text, a)]
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singleSample x = [("", x)]
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-- | Samples without documentation.
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samples :: [a] -> [(Text, a)]
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samples = map ("",)
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-- | Default sample Generic-based inputs/outputs.
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defaultSamples :: forall a. (Generic a, GToSample (Rep a)) => Proxy a -> [(Text, a)]
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defaultSamples _ = Omega.runOmega $ second to <$> gtoSamples (Proxy :: Proxy (Rep a))
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-- | @'ToSample'@ for Generics.
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--
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-- The use of @'Omega'@ allows for more productive sample generation.
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class GToSample t where
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gtoSamples :: proxy t -> Omega.Omega (Text, t x)
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instance GToSample U1 where
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gtoSamples _ = Omega.each (singleSample U1)
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instance GToSample V1 where
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gtoSamples _ = empty
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instance (GToSample p, GToSample q) => GToSample (p :*: q) where
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gtoSamples _ = render <$> ps <*> qs
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where
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ps = gtoSamples (Proxy :: Proxy p)
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qs = gtoSamples (Proxy :: Proxy q)
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render (ta, a) (tb, b)
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| T.null ta || T.null tb = (ta <> tb, a :*: b)
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| otherwise = (ta <> ", " <> tb, a :*: b)
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instance (GToSample p, GToSample q) => GToSample (p :+: q) where
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gtoSamples _ = lefts <|> rights
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where
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lefts = second L1 <$> gtoSamples (Proxy :: Proxy p)
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rights = second R1 <$> gtoSamples (Proxy :: Proxy q)
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instance ToSample a => GToSample (K1 i a) where
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gtoSamples _ = second K1 <$> Omega.each (toSamples (Proxy :: Proxy a))
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instance (GToSample f) => GToSample (M1 i a f) where
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gtoSamples _ = second M1 <$> gtoSamples (Proxy :: Proxy f)
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class AllHeaderSamples ls where
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allHeaderToSample :: Proxy ls -> [HTTP.Header]
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instance AllHeaderSamples '[] where
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allHeaderToSample _ = []
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instance (ToByteString l, AllHeaderSamples ls, ToSample l, KnownSymbol h)
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=> AllHeaderSamples (Header h l ': ls) where
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allHeaderToSample _ = (mkHeader (toSample (Proxy :: Proxy l))) :
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allHeaderToSample (Proxy :: Proxy ls)
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where headerName = CI.mk . cs $ symbolVal (Proxy :: Proxy h)
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mkHeader (Just x) = (headerName, cs $ toByteString x)
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mkHeader Nothing = (headerName, "<no header sample provided>")
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-- | Synthesise a sample value of a type, encoded in the specified media types.
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sampleByteString
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:: forall ctypes a. (ToSample a, IsNonEmpty ctypes, AllMimeRender ctypes a)
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=> Proxy ctypes
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-> Proxy a
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-> [(M.MediaType, ByteString)]
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sampleByteString ctypes@Proxy Proxy =
|
|
maybe [] (allMimeRender ctypes) $ toSample (Proxy :: Proxy a)
|
|
|
|
-- | Synthesise a list of sample values of a particular type, encoded in the
|
|
-- specified media types.
|
|
sampleByteStrings
|
|
:: forall ctypes a. (ToSample a, IsNonEmpty ctypes, AllMimeRender ctypes a)
|
|
=> Proxy ctypes
|
|
-> Proxy a
|
|
-> [(Text, M.MediaType, ByteString)]
|
|
sampleByteStrings ctypes@Proxy Proxy =
|
|
let samples' = toSamples (Proxy :: Proxy a)
|
|
enc (t, s) = uncurry (t,,) <$> allMimeRender ctypes s
|
|
in concatMap enc samples'
|
|
|
|
-- | The class that helps us automatically get documentation
|
|
-- for GET parameters.
|
|
--
|
|
-- Example of an instance:
|
|
--
|
|
-- > instance ToParam (QueryParam "capital" Bool) where
|
|
-- > toParam _ =
|
|
-- > DocQueryParam "capital"
|
|
-- > ["true", "false"]
|
|
-- > "Get the greeting message in uppercase (true) or not (false). Default is false."
|
|
class ToParam t where
|
|
toParam :: Proxy t -> DocQueryParam
|
|
|
|
-- | The class that helps us automatically get documentation
|
|
-- for URL captures.
|
|
--
|
|
-- Example of an instance:
|
|
--
|
|
-- > instance ToCapture (Capture "name" Text) where
|
|
-- > toCapture _ = DocCapture "name" "name of the person to greet"
|
|
class ToCapture c where
|
|
toCapture :: Proxy c -> DocCapture
|
|
|
|
-- | Generate documentation in Markdown format for
|
|
-- the given 'API'.
|
|
markdown :: API -> String
|
|
markdown api = unlines $
|
|
introsStr (api ^. apiIntros)
|
|
++ (concatMap (uncurry printEndpoint) . sort . HM.toList $ api ^. apiEndpoints)
|
|
|
|
where printEndpoint :: Endpoint -> Action -> [String]
|
|
printEndpoint endpoint action =
|
|
str :
|
|
"" :
|
|
notesStr (action ^. notes) ++
|
|
capturesStr (action ^. captures) ++
|
|
headersStr (action ^. headers) ++
|
|
paramsStr (action ^. params) ++
|
|
rqbodyStr (action ^. rqtypes) (action ^. rqbody) ++
|
|
responseStr (action ^. response) ++
|
|
[]
|
|
|
|
where str = "## " ++ show (endpoint^.method)
|
|
++ " " ++ showPath (endpoint^.path)
|
|
|
|
introsStr :: [DocIntro] -> [String]
|
|
introsStr = concatMap introStr
|
|
|
|
introStr :: DocIntro -> [String]
|
|
introStr i =
|
|
("## " ++ i ^. introTitle) :
|
|
"" :
|
|
intersperse "" (i ^. introBody) ++
|
|
"" :
|
|
[]
|
|
|
|
notesStr :: [DocNote] -> [String]
|
|
notesStr = concatMap noteStr
|
|
|
|
noteStr :: DocNote -> [String]
|
|
noteStr nt =
|
|
("#### " ++ nt ^. noteTitle) :
|
|
"" :
|
|
intersperse "" (nt ^. noteBody) ++
|
|
"" :
|
|
[]
|
|
|
|
capturesStr :: [DocCapture] -> [String]
|
|
capturesStr [] = []
|
|
capturesStr l =
|
|
"#### Captures:" :
|
|
"" :
|
|
map captureStr l ++
|
|
"" :
|
|
[]
|
|
|
|
captureStr cap =
|
|
"- *" ++ (cap ^. capSymbol) ++ "*: " ++ (cap ^. capDesc)
|
|
|
|
headersStr :: [Text] -> [String]
|
|
headersStr [] = []
|
|
headersStr l = [""] ++ map headerStr l ++ [""]
|
|
|
|
where headerStr hname = "- This endpoint is sensitive to the value of the **"
|
|
++ unpack hname ++ "** HTTP header."
|
|
|
|
paramsStr :: [DocQueryParam] -> [String]
|
|
paramsStr [] = []
|
|
paramsStr l =
|
|
"#### GET Parameters:" :
|
|
"" :
|
|
map paramStr l ++
|
|
"" :
|
|
[]
|
|
|
|
paramStr param = unlines $
|
|
("- " ++ param ^. paramName) :
|
|
(if (not (null values) || param ^. paramKind /= Flag)
|
|
then [" - **Values**: *" ++ intercalate ", " values ++ "*"]
|
|
else []) ++
|
|
(" - **Description**: " ++ param ^. paramDesc) :
|
|
(if (param ^. paramKind == List)
|
|
then [" - This parameter is a **list**. All GET parameters with the name "
|
|
++ param ^. paramName ++ "[] will forward their values in a list to the handler."]
|
|
else []) ++
|
|
(if (param ^. paramKind == Flag)
|
|
then [" - This parameter is a **flag**. This means no value is expected to be associated to this parameter."]
|
|
else []) ++
|
|
[]
|
|
|
|
where values = param ^. paramValues
|
|
|
|
rqbodyStr :: [M.MediaType] -> [(M.MediaType, ByteString)]-> [String]
|
|
rqbodyStr [] [] = []
|
|
rqbodyStr types s =
|
|
["#### Request:", ""]
|
|
<> formatTypes types
|
|
<> concatMap formatBody s
|
|
|
|
formatTypes [] = []
|
|
formatTypes ts = ["- Supported content types are:", ""]
|
|
<> map (\t -> " - `" <> show t <> "`") ts
|
|
<> [""]
|
|
|
|
formatBody (m, b) =
|
|
"- Example: `" <> cs (show m) <> "`" :
|
|
contentStr m b
|
|
|
|
markdownForType mime_type =
|
|
case (M.mainType mime_type, M.subType mime_type) of
|
|
("text", "html") -> "html"
|
|
("application", "xml") -> "xml"
|
|
("application", "json") -> "javascript"
|
|
("application", "javascript") -> "javascript"
|
|
("text", "css") -> "css"
|
|
(_, _) -> ""
|
|
|
|
contentStr mime_type body =
|
|
"" :
|
|
"```" <> markdownForType mime_type :
|
|
cs body :
|
|
"```" :
|
|
"" :
|
|
[]
|
|
|
|
responseStr :: Response -> [String]
|
|
responseStr resp =
|
|
"#### Response:" :
|
|
"" :
|
|
("- Status code " ++ show (resp ^. respStatus)) :
|
|
("- Headers: " ++ show (resp ^. respHeaders)) :
|
|
"" :
|
|
formatTypes (resp ^. respTypes) ++
|
|
bodies
|
|
|
|
where bodies = case resp ^. respBody of
|
|
[] -> ["- No response body\n"]
|
|
[("", t, r)] -> "- Response body as below." : contentStr t r
|
|
xs ->
|
|
concatMap (\(ctx, t, r) -> ("- " <> T.unpack ctx) : contentStr t r) xs
|
|
|
|
-- * Instances
|
|
|
|
-- | The generated docs for @a ':<|>' b@ just appends the docs
|
|
-- for @a@ with the docs for @b@.
|
|
instance OVERLAPPABLE_
|
|
(HasDocs layout1, HasDocs layout2)
|
|
=> HasDocs (layout1 :<|> layout2) where
|
|
|
|
docsFor Proxy (ep, action) = docsFor p1 (ep, action) <> docsFor p2 (ep, action)
|
|
|
|
where p1 :: Proxy layout1
|
|
p1 = Proxy
|
|
|
|
p2 :: Proxy layout2
|
|
p2 = Proxy
|
|
|
|
-- | @"books" :> 'Capture' "isbn" Text@ will appear as
|
|
-- @/books/:isbn@ in the docs.
|
|
instance (KnownSymbol sym, ToCapture (Capture sym a), HasDocs sublayout)
|
|
=> HasDocs (Capture sym a :> sublayout) where
|
|
|
|
docsFor Proxy (endpoint, action) =
|
|
docsFor sublayoutP (endpoint', action')
|
|
|
|
where sublayoutP = Proxy :: Proxy sublayout
|
|
captureP = Proxy :: Proxy (Capture sym a)
|
|
|
|
action' = over captures (|> toCapture captureP) action
|
|
endpoint' = over path (\p -> p ++ [":" ++ symbolVal symP]) endpoint
|
|
symP = Proxy :: Proxy sym
|
|
|
|
|
|
instance OVERLAPPABLE_
|
|
(ToSample a, IsNonEmpty cts, AllMimeRender cts a)
|
|
=> HasDocs (Delete cts a) where
|
|
docsFor Proxy (endpoint, action) DocOptions{..} =
|
|
single endpoint' action'
|
|
|
|
where endpoint' = endpoint & method .~ DocDELETE
|
|
action' = action & response.respBody .~ take _maxSamples (sampleByteStrings t p)
|
|
& response.respTypes .~ allMime t
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance OVERLAPPING_
|
|
(ToSample a, IsNonEmpty cts, AllMimeRender cts a
|
|
, AllHeaderSamples ls , GetHeaders (HList ls) )
|
|
=> HasDocs (Delete cts (Headers ls a)) where
|
|
docsFor Proxy (endpoint, action) DocOptions{..} =
|
|
single endpoint' action'
|
|
|
|
where hdrs = allHeaderToSample (Proxy :: Proxy ls)
|
|
endpoint' = endpoint & method .~ DocDELETE
|
|
action' = action & response.respBody .~ take _maxSamples (sampleByteStrings t p)
|
|
& response.respTypes .~ allMime t
|
|
& response.respHeaders .~ hdrs
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance OVERLAPPABLE_
|
|
(ToSample a, IsNonEmpty cts, AllMimeRender cts a)
|
|
=> HasDocs (Get cts a) where
|
|
docsFor Proxy (endpoint, action) DocOptions{..} =
|
|
single endpoint' action'
|
|
|
|
where endpoint' = endpoint & method .~ DocGET
|
|
action' = action & response.respBody .~ take _maxSamples (sampleByteStrings t p)
|
|
& response.respTypes .~ allMime t
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance OVERLAPPING_
|
|
(ToSample a, IsNonEmpty cts, AllMimeRender cts a
|
|
, AllHeaderSamples ls , GetHeaders (HList ls) )
|
|
=> HasDocs (Get cts (Headers ls a)) where
|
|
docsFor Proxy (endpoint, action) DocOptions{..} =
|
|
single endpoint' action'
|
|
|
|
where hdrs = allHeaderToSample (Proxy :: Proxy ls)
|
|
endpoint' = endpoint & method .~ DocGET
|
|
action' = action & response.respBody .~ take _maxSamples (sampleByteStrings t p)
|
|
& response.respTypes .~ allMime t
|
|
& response.respHeaders .~ hdrs
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance (KnownSymbol sym, HasDocs sublayout)
|
|
=> HasDocs (Header sym a :> sublayout) where
|
|
docsFor Proxy (endpoint, action) =
|
|
docsFor sublayoutP (endpoint, action')
|
|
|
|
where sublayoutP = Proxy :: Proxy sublayout
|
|
action' = over headers (|> headername) action
|
|
headername = pack $ symbolVal (Proxy :: Proxy sym)
|
|
|
|
instance OVERLAPPABLE_
|
|
(ToSample a, IsNonEmpty cts, AllMimeRender cts a)
|
|
=> HasDocs (Post cts a) where
|
|
docsFor Proxy (endpoint, action) DocOptions{..} =
|
|
single endpoint' action'
|
|
|
|
where endpoint' = endpoint & method .~ DocPOST
|
|
action' = action & response.respBody .~ take _maxSamples (sampleByteStrings t p)
|
|
& response.respTypes .~ allMime t
|
|
& response.respStatus .~ 201
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance OVERLAPPING_
|
|
(ToSample a, IsNonEmpty cts, AllMimeRender cts a
|
|
, AllHeaderSamples ls , GetHeaders (HList ls) )
|
|
=> HasDocs (Post cts (Headers ls a)) where
|
|
docsFor Proxy (endpoint, action) DocOptions{..} =
|
|
single endpoint' action'
|
|
|
|
where hdrs = allHeaderToSample (Proxy :: Proxy ls)
|
|
endpoint' = endpoint & method .~ DocPOST
|
|
action' = action & response.respBody .~ take _maxSamples (sampleByteStrings t p)
|
|
& response.respTypes .~ allMime t
|
|
& response.respStatus .~ 201
|
|
& response.respHeaders .~ hdrs
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance OVERLAPPABLE_
|
|
(ToSample a, IsNonEmpty cts, AllMimeRender cts a)
|
|
=> HasDocs (Put cts a) where
|
|
docsFor Proxy (endpoint, action) DocOptions{..} =
|
|
single endpoint' action'
|
|
|
|
where endpoint' = endpoint & method .~ DocPUT
|
|
action' = action & response.respBody .~ take _maxSamples (sampleByteStrings t p)
|
|
& response.respTypes .~ allMime t
|
|
& response.respStatus .~ 200
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance OVERLAPPING_
|
|
( ToSample a, IsNonEmpty cts, AllMimeRender cts a,
|
|
AllHeaderSamples ls , GetHeaders (HList ls) )
|
|
=> HasDocs (Put cts (Headers ls a)) where
|
|
docsFor Proxy (endpoint, action) DocOptions{..} =
|
|
single endpoint' action'
|
|
|
|
where hdrs = allHeaderToSample (Proxy :: Proxy ls)
|
|
endpoint' = endpoint & method .~ DocPUT
|
|
action' = action & response.respBody .~ take _maxSamples (sampleByteStrings t p)
|
|
& response.respTypes .~ allMime t
|
|
& response.respStatus .~ 200
|
|
& response.respHeaders .~ hdrs
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance (KnownSymbol sym, ToParam (QueryParam sym a), HasDocs sublayout)
|
|
=> HasDocs (QueryParam sym a :> sublayout) where
|
|
|
|
docsFor Proxy (endpoint, action) =
|
|
docsFor sublayoutP (endpoint, action')
|
|
|
|
where sublayoutP = Proxy :: Proxy sublayout
|
|
paramP = Proxy :: Proxy (QueryParam sym a)
|
|
action' = over params (|> toParam paramP) action
|
|
|
|
instance (KnownSymbol sym, ToParam (QueryParams sym a), HasDocs sublayout)
|
|
=> HasDocs (QueryParams sym a :> sublayout) where
|
|
|
|
docsFor Proxy (endpoint, action) =
|
|
docsFor sublayoutP (endpoint, action')
|
|
|
|
where sublayoutP = Proxy :: Proxy sublayout
|
|
paramP = Proxy :: Proxy (QueryParams sym a)
|
|
action' = over params (|> toParam paramP) action
|
|
|
|
|
|
instance (KnownSymbol sym, ToParam (QueryFlag sym), HasDocs sublayout)
|
|
=> HasDocs (QueryFlag sym :> sublayout) where
|
|
|
|
docsFor Proxy (endpoint, action) =
|
|
docsFor sublayoutP (endpoint, action')
|
|
|
|
where sublayoutP = Proxy :: Proxy sublayout
|
|
paramP = Proxy :: Proxy (QueryFlag sym)
|
|
action' = over params (|> toParam paramP) action
|
|
|
|
|
|
instance HasDocs Raw where
|
|
docsFor _proxy (endpoint, action) _ =
|
|
single endpoint action
|
|
|
|
-- TODO: We use 'AllMimeRender' here because we need to be able to show the
|
|
-- example data. However, there's no reason to believe that the instances of
|
|
-- 'AllMimeUnrender' and 'AllMimeRender' actually agree (or to suppose that
|
|
-- both are even defined) for any particular type.
|
|
instance (ToSample a, IsNonEmpty cts, AllMimeRender cts a, HasDocs sublayout)
|
|
=> HasDocs (ReqBody cts a :> sublayout) where
|
|
|
|
docsFor Proxy (endpoint, action) =
|
|
docsFor sublayoutP (endpoint, action')
|
|
|
|
where sublayoutP = Proxy :: Proxy sublayout
|
|
action' = action & rqbody .~ sampleByteString t p
|
|
& rqtypes .~ allMime t
|
|
t = Proxy :: Proxy cts
|
|
p = Proxy :: Proxy a
|
|
|
|
instance (KnownSymbol path, HasDocs sublayout) => HasDocs (path :> sublayout) where
|
|
|
|
docsFor Proxy (endpoint, action) =
|
|
docsFor sublayoutP (endpoint', action)
|
|
|
|
where sublayoutP = Proxy :: Proxy sublayout
|
|
endpoint' = endpoint & path <>~ [symbolVal pa]
|
|
pa = Proxy :: Proxy path
|
|
|
|
instance HasDocs sublayout => HasDocs (RemoteHost :> sublayout) where
|
|
docsFor Proxy ep =
|
|
docsFor (Proxy :: Proxy sublayout) ep
|
|
|
|
instance HasDocs sublayout => HasDocs (IsSecure :> sublayout) where
|
|
docsFor Proxy ep =
|
|
docsFor (Proxy :: Proxy sublayout) ep
|
|
|
|
instance HasDocs sublayout => HasDocs (HttpVersion :> sublayout) where
|
|
docsFor Proxy ep =
|
|
docsFor (Proxy :: Proxy sublayout) ep
|
|
|
|
instance HasDocs sublayout => HasDocs (Vault :> sublayout) where
|
|
docsFor Proxy ep =
|
|
docsFor (Proxy :: Proxy sublayout) ep
|
|
|
|
-- ToSample instances for simple types
|
|
instance ToSample ()
|
|
instance ToSample Bool
|
|
instance ToSample Ordering
|
|
|
|
-- polymorphic ToSample instances
|
|
instance (ToSample a, ToSample b) => ToSample (a, b)
|
|
instance (ToSample a, ToSample b, ToSample c) => ToSample (a, b, c)
|
|
instance (ToSample a, ToSample b, ToSample c, ToSample d) => ToSample (a, b, c, d)
|
|
instance (ToSample a, ToSample b, ToSample c, ToSample d, ToSample e) => ToSample (a, b, c, d, e)
|
|
instance (ToSample a, ToSample b, ToSample c, ToSample d, ToSample e, ToSample f) => ToSample (a, b, c, d, e, f)
|
|
instance (ToSample a, ToSample b, ToSample c, ToSample d, ToSample e, ToSample f, ToSample g) => ToSample (a, b, c, d, e, f, g)
|
|
|
|
instance ToSample a => ToSample (Maybe a)
|
|
instance (ToSample a, ToSample b) => ToSample (Either a b)
|
|
instance ToSample a => ToSample [a]
|
|
|
|
-- ToSample instances for Control.Applicative types
|
|
instance ToSample a => ToSample (Const a b)
|
|
instance ToSample a => ToSample (ZipList a)
|
|
|
|
-- ToSample instances for Data.Monoid newtypes
|
|
instance ToSample All
|
|
instance ToSample Any
|
|
instance ToSample a => ToSample (Sum a)
|
|
instance ToSample a => ToSample (Product a)
|
|
instance ToSample a => ToSample (First a)
|
|
instance ToSample a => ToSample (Last a)
|
|
instance ToSample a => ToSample (Dual a)
|