Wrap common downloader fields into a record

lib/SlackBuilder/Config.hs

@@ -4,7 +4,8 @@
 
 -- | Configuration file.
 module SlackBuilder.Config
-    ( Settings(..)
+    ( DownloaderSettings(..)
+    , Settings(..)
     , MaintainerSettings(..)
     , PackageSettings(..)
     , settingsCodec
@@ -14,6 +15,7 @@ import Data.List.NonEmpty (NonEmpty(..))
 import Data.Text (Text)
 import Toml ((.=))
 import qualified Toml
+import GHC.Records (HasField(..))
 
 data Settings = Settings
     { ghToken :: !Text
@@ -29,7 +31,7 @@ newtype MaintainerSettings = MaintainerSettings
     { signature :: Bool
     } deriving (Eq, Show)
 
-data PackageSettings = PackageSettings
+data DownloaderSettings = DownloaderSettings
     { name :: Text
     , template :: Text
     , is64 :: Bool
@@ -40,6 +42,10 @@ data PackageSettings = PackageSettings
     , repackage :: Maybe [String]
     } deriving (Eq, Show)
 
+newtype PackageSettings = PackageSettings
+    { downloader :: DownloaderSettings
+    } deriving (Eq, Show)
+
 settingsCodec :: Toml.TomlCodec Settings
 settingsCodec = Settings
     <$> Toml.text "gh_token" .= ghToken
@@ -54,8 +60,8 @@ maintainerSettingsCodec :: Toml.TomlCodec MaintainerSettings
 maintainerSettingsCodec = MaintainerSettings
     <$> Toml.bool "signature" .= signature
 
-packageSettingsCodec :: Toml.TomlCodec PackageSettings
-packageSettingsCodec = PackageSettings
+downloaderSettingsCodec :: Toml.TomlCodec DownloaderSettings
+downloaderSettingsCodec = DownloaderSettings
     <$> Toml.text "name" .= name
     <*> Toml.text "template" .= template
     <*> Toml.bool "is64" .= is64
@@ -68,3 +74,6 @@ packageSettingsCodec = PackageSettings
     githubCodec = Toml.pair (Toml.text "owner") (Toml.text "name")
     packagistCodec = Toml.pair (Toml.text "owner") (Toml.text "name")
     textCodec = Toml.pair (Toml.text "url") (Toml.arrayOf Toml._String "picker")
+
+packageSettingsCodec :: Toml.TomlCodec PackageSettings
+packageSettingsCodec = Toml.dimap (getField @"downloader") PackageSettings downloaderSettingsCodec