POST path modified with internal data type but tests failing (no Location and data returned as array)
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@@ -1,6 +1,6 @@
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module PostgREST.Parsers
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( parseGetRequest
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)
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-- ( parseGetRequest
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-- )
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where
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import Control.Applicative hiding ((<$>))
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@@ -8,29 +8,16 @@ import Control.Applicative hiding ((<$>))
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import Data.Functor ((<$>))
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import Data.Traversable (traverse)
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import Control.Monad (join)
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import Data.List (delete, find)
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import Data.Maybe
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--import Control.Monad (join)
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--import Data.List (delete, find)
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--import Data.Maybe
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import Data.Monoid
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import Data.String.Conversions (cs)
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import Data.Text (Text)
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import Data.Tree
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import Network.Wai (Request, pathInfo, queryString)
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--import Network.Wai (Request, pathInfo, queryString)
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import PostgREST.Types
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import Text.ParserCombinators.Parsec hiding (many, (<|>))
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parseGetRequest :: Request -> Either ParseError ApiRequest
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parseGetRequest httpRequest =
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foldr addFilter <$> (addOrder <$> apiRequest <*> ord) <*> flts
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where
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apiRequest = parse (pRequestSelect rootTableName) ("failed to parse select parameter <<"++selectStr++">>") $ cs selectStr
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addOrder (Node (q,i) f) o = Node (q{order=o}, i) f
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flts = mapM pRequestFilter whereFilters
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rootTableName = cs $ head $ pathInfo httpRequest -- TODO unsafe head
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qString = [(cs k, cs <$> v)|(k,v) <- queryString httpRequest]
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orderStr = join $ lookup "order" qString
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ord = traverse (parse pOrder ("failed to parse order parameter <<"++fromMaybe "" orderStr++">>")) orderStr
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selectStr = fromMaybe "*" $ fromMaybe (Just "*") $ lookup "select" qString --in case the parametre is missing or empty we default to *
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whereFilters = [ (k, fromJust v) | (k,v) <- qString, k `notElem` ["select", "order"], isJust v ]
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pRequestSelect :: Text -> Parser ApiRequest
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pRequestSelect rootNodeName = do
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@@ -53,20 +40,6 @@ pRequestFilter (k, v) = (,) <$> path <*> (Filter <$> fld <*> op <*> val)
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op = fst <$> opVal
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val = snd <$> opVal
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addFilter :: (Path, Filter) -> ApiRequest -> ApiRequest
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addFilter ([], flt) (Node (q@(Select {where_=flts}), i) forest) = Node (q {where_=flt:flts}, i) forest
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addFilter (path, flt) (Node rn forest) =
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case targetNode of
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Nothing -> Node rn forest -- the filter is silenty dropped in the Request does not contain the required path
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Just tn -> Node rn (addFilter (remainingPath, flt) tn:restForest)
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where
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targetNodeName:remainingPath = path
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(targetNode,restForest) = splitForest targetNodeName forest
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splitForest name forst =
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case maybeNode of
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Nothing -> (Nothing,forest)
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Just node -> (Just node, delete node forest)
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where maybeNode = find ((name==).fst.snd.rootLabel) forst
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ws :: Parser Text
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ws = cs <$> many (oneOf " \t")
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