47 lines
1.1 KiB
Haskell
47 lines
1.1 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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module AppTypes.Configuration where
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import qualified Data.Text as T
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import Data.YAML as Y
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import Options.Applicative as O
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data ServerConfig = ServerConfig
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{ configDbHost :: T.Text
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, configDbPort :: Word
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, configDbName :: T.Text
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, configDbUser :: T.Text
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, configDbPasswd :: T.Text
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, configCurrencySymbol :: T.Text
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, configListenPort :: Word
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, configListenHost :: T.Text
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, configMaxConnectionsPerClient :: Word
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}
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deriving (Show)
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instance FromYAML ServerConfig where
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parseYAML = withMap "Configuration" $ \m -> ServerConfig
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<$> m .: "db_host"
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<*> m .: "db_port"
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<*> m .: "db_name"
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<*> m .: "db_user"
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<*> m .: "db_passwd"
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<*> m .: "currency"
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<*> m .: "listen_port"
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<*> m .:? "listen_host" .!= "127.0.0.1"
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<*> m .:? "max_connections_per_client" .!= 10
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newtype Options = Options
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{ optConfigLocation :: T.Text
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}
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deriving (Show)
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options :: O.Parser Options
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options = Options
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<$> strOption
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( long "configuration"
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<> short 'c'
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<> metavar "FILEPATH"
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<> help "Location of the configuration YAML-file"
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)
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