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{-# LANGUAGE OverloadedStrings #-}
module Conftrack.Pretty where
import Conftrack.Value (Origin(..), ConfigError, ConfigValue(..), Key)
import Conftrack (Warning)
import Data.Map (Map)
import qualified Data.Map.Strict as M
import qualified Data.Text.IO as T
import qualified Data.Text as T
import GHC.Exts (groupWith)
printConfigErrors :: [ConfigError] -> IO ()
printConfigErrors = mapM_ print
-- TODO: perhaps sort it by source, not by key?
-- also, shadowed values are currently never read
printConfigOrigins :: Map Key [Origin] -> IO ()
printConfigOrigins =
mapM_ (T.putStrLn . prettyOrigin)
. groupWith ((\(Origin _ s) -> s) . head . snd)
. filter (not . null . snd)
. M.toList
where prettyOrigin origins =
T.concat $ originSource (snd (head origins)) : fmap prettyKey origins
prettyKey (key, []) = "\n " <> T.pack (show key)
prettyKey (key, (Origin val _):shadowed) = T.concat $
["\n ", T.pack $ show key, " = ", prettyValue val]
<> fmap (\(Origin _ text) -> "\n (occurrance in "<>text<>" shadowed)") shadowed
originSource [] = "default value"
originSource (Origin _ text:_) = text
printConfigWarnings :: [Warning] -> IO ()
printConfigWarnings = mapM_ print
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