servant/src/Servant/JQuery.hs

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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE FlexibleInstances #-}
-----------------------------------------------------------------------------
-- |
-- Module : Servant.JQuery
-- Copyright : (C) 2014 Alp Mestanogullari
-- License : BSD3
-- Maintainer : Alp Mestanogullari <alpmestan@gmail.com>
-- Stability : experimental
-- Portability : non-portable
module Servant.JQuery
( jquery
, generateJS
, printJS
, module Servant.JQuery.Internal
) where
import Control.Lens
import Data.List
import Data.Monoid
import Data.Proxy
import Servant.JQuery.Internal
jquery :: HasJQ layout => Proxy layout -> JQ layout
jquery p = jqueryFor p defReq
-- js codegen
generateJS :: AjaxReq -> String
generateJS req = "\n" <>
"function " <> fname <> "(" <> argsStr <> ")\n"
<> "{\n"
<> " $.ajax(\n"
<> " { url: " <> url <> "\n"
<> " , success: onSuccess\n"
<> dataBody
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<> reqheaders
<> " , error: onError\n"
<> " , type: '" <> method <> "'\n"
<> " });\n"
<> "}\n"
where argsStr = intercalate ", " args
args = captures
++ map (view argName) queryparams
++ body
++ map ((<>) "header" . headerArgName) hs
++ ["onSuccess", "onError"]
captures = map captureArg
. filter isCapture
$ req ^. reqUrl.path
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hs = req ^. reqHeaders
queryparams = req ^.. reqUrl.queryStr.traverse
body = if req ^. reqBody
then ["body"]
else []
dataBody =
if req ^. reqBody
then "\n , data: JSON.stringify(body)\n"
else ""
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reqheaders =
if null hs
then ""
else "\n , headers: { " ++ headersStr ++ " }\n"
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where headersStr = intercalate ", " $ map headerStr hs
headerStr header = "\"" ++ headerArgName header ++ "\": " ++ show header
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fname = req ^. funcName
method = req ^. reqMethod
url = "'"
++ urlArgs
++ queryArgs
urlArgs = jsSegments
$ req ^.. reqUrl.path.traverse
queryArgs = if null queryparams
then ""
else " + '?" ++ jsParams queryparams
printJS :: AjaxReq -> IO ()
printJS = putStrLn . generateJS