1 files changed, 27 insertions, 0 deletions
diff --git a/src/Model/Json/Search.hs b/src/Model/Json/Search.hs
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+++ b/src/Model/Json/Search.hs
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+{-# LANGUAGE OverloadedStrings #-}
+
+module Model.Json.Search
+  ( Search(..)
+  , getMaterialIdentifier
+  ) where
+
+import Control.Monad (mzero)
+
+import Data.Aeson
+import Data.Text (Text)
+import Data.List (find)
+
+data Search = Search
+  { identifier :: Text
+  , kind :: Text
+  } deriving (Show)
+
+instance FromJSON Search where
+  parseJSON (Object v) =
+    Search <$>
+      v .: "id" <*>
+      v .: "type"
+  parseJSON _ = mzero
+
+getMaterialIdentifier :: [Search] -> Maybe Text
+getMaterialIdentifier = fmap identifier . find ((==) "matiere" . kind)