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17 changes: 17 additions & 0 deletions src/Servant/Pagination.hs
Original file line number Diff line number Diff line change
Expand Up @@ -387,6 +387,9 @@ instance (ToHttpApiData (AcceptRanges (f ': fs)), KnownSymbol field) => ToHttpAp
toUrlPiece AcceptRanges =
Text.pack (symbolVal (Proxy @field)) <> "," <> toUrlPiece (AcceptRanges @(f ': fs))

instance FromHttpApiData (AcceptRanges fields) where
parseUrlPiece _ = Right $ AcceptRanges @fields

instance ToParamSchema (AcceptRanges fields) where
toParamSchema _ =
mempty
Expand All @@ -407,6 +410,20 @@ instance ToHttpApiData (ContentRange fields res) where
Text.pack (symbolVal field) <> " " <> (encodeText . toUrlPiece) start <> ".." <> (encodeText . toUrlPiece) end


instance
( HasPagination resource field
, IsRangeType (RangeType resource field)
) => FromHttpApiData (ContentRange (field ': fields) resource) where
parseUrlPiece "" = Left "Invalid Content Range"
parseUrlPiece txt =
case Text.splitOn ".." . snd $ Text.breakOnEnd " " txt of
[start, end] ->
ContentRange
<$> parseUrlPiece start
<*> parseUrlPiece end
<*> pure (Proxy @field)
_otherwise -> Left "Invalid Content Range"

instance ToParamSchema (ContentRange fields resource) where
toParamSchema _ =
mempty
Expand Down