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module Config (
Config(..),
findConfig,
parseConfig,
) where
import Control.Monad
import Control.Monad.Combinators
import Data.ByteString.Lazy qualified as BS
import Data.List
import Data.Map qualified as M
import Data.Maybe
import Data.Ord
import Data.Text (Text)
import Data.Text qualified as T
import Data.YAML
import System.Directory
import System.Exit
import System.FilePath
import System.Process
import Job
data Config = Config
{ configJobs :: [Job]
}
instance Semigroup Config where
a <> b = Config
{ configJobs = configJobs a ++ configJobs b
}
instance Monoid Config where
mempty = Config
{ configJobs = []
}
instance FromYAML Config where
parseYAML = withMap "Config" $ \m -> do
let getpos = \case (Scalar pos _, _) -> pos
(Mapping pos _ _, _) -> pos
(Sequence pos _ _, _) -> pos
(Anchor pos _ _, _) -> pos
jobs <- fmap catMaybes $ forM (sortBy (comparing $ posLine . getpos) $ M.assocs m) $ \case
(Scalar _ (SStr tag), node) | ["job", name] <- T.words tag -> do
flip (withMap "Job") node $ \j -> Just <$> choice
[ cabalJob name =<< j .: "cabal"
, shellJob name =<< j .: "shell"
]
_ -> return Nothing
return $ Config jobs
cabalJob :: Text -> Node Pos -> Parser Job
cabalJob name = withMap "cabal job" $ \m -> do
ghcOptions <- m .:? "ghc-options" >>= \case
Nothing -> return []
Just s -> withSeq "GHC option list" (mapM (withStr "GHC option" return)) s
return Job
{ jobName = JobName name
, jobRecipe = [ proc "cabal" $ concat [ ["build"], ("--ghc-option="++) . T.unpack <$> ghcOptions ] ]
, jobArtifacts = map (\(ArtifactName aname) -> (ArtifactName "bin", proc "cabal" ["list-bin", T.unpack aname])) []
}
shellJob :: Text -> Node Pos -> Parser Job
shellJob name = withSeq "shell commands" $ \xs -> do
recipe <- forM xs $ withStr "shell command" $ return . T.unpack
return Job
{ jobName = JobName name
, jobRecipe = map shell recipe
, jobArtifacts = []
}
findConfig :: IO (Maybe FilePath)
findConfig = go "."
where
name = "minici.yaml"
go path = do
doesFileExist (path </> name) >>= \case
True -> return $ Just $ path </> name
False -> doesDirectoryExist (path </> "..") >>= \case
True -> go (path </> "..")
False -> return Nothing
parseConfig :: FilePath -> IO Config
parseConfig path = do
contents <- BS.readFile path
case decode1 contents of
Left (pos, err) -> do
putStr $ prettyPosWithSource pos contents err
exitFailure
Right conf -> return conf
|