mateamt/app/AppTypes/Configuration.hs

63 lines
1.6 KiB
Haskell

{-# LANGUAGE OverloadedStrings #-}
module AppTypes.Configuration where
import qualified Data.Text as T
import Data.Yaml as Y
import Options.Applicative as O
data ServerConfig = ServerConfig
{ configDbHost :: T.Text
, configDbPort :: Word
, configDbName :: T.Text
, configDbUser :: T.Text
, configDbPasswd :: T.Text
, configCurrencySymbol :: T.Text
, configCurrencyFraction :: Word
, configListenPort :: Word
, configListenHost :: T.Text
-- , configMaxConnectionsPerClient :: Word
-- , configBlockRegistration :: Bool
, configSendmailPath :: FilePath
}
deriving (Show)
instance FromJSON ServerConfig where
parseJSON (Object m) = ServerConfig
<$> m .: "db_host"
<*> m .: "db_port"
<*> m .: "db_name"
<*> m .: "db_user"
<*> m .: "db_passwd"
<*> m .: "currency"
<*> m .: "currency_fraction"
<*> m .: "listen_port"
<*> m .:? "listen_host" .!= "127.0.0.1"
-- <*> m .:? "max_connections_per_client" .!= 10
-- <*> m .: "block_registration"
<*> m .: "sendmail_path"
parseJSON _ = error "Can not parse configuration"
data Options = Options
{ optConfigLocation :: T.Text
, optMigrationLocation :: T.Text
}
deriving (Show)
options :: O.Parser Options
options = Options
<$> strOption
( long "configuration"
<> short 'c'
<> metavar "FILEPATH"
<> help "Location of the configuration YAML-file"
)
<*> strOption
( long "migration-dir"
<> short 'm'
<> metavar "DIRPATH"
<> help "Location of the migration scripts folder"
<> value "./migration_scripts"
<> showDefault
)