Accept up2date package parameter

src/Main.hs

@@ -6,6 +6,7 @@ import Data.Char (isNumber)
 import Control.Applicative (Applicative(liftA2))
 import Data.List.NonEmpty (NonEmpty(..))
 import qualified Data.List.NonEmpty as NonEmpty
+import Control.Monad.Catch (MonadThrow(..))
 import Control.Monad.IO.Class (MonadIO(..))
 import Data.Maybe (fromJust)
 import qualified Data.Map as Map
@@ -250,8 +251,13 @@ autoUpdatable =
         }
     ]
 
-up2Date :: SlackBuilderT ()
-up2Date = for_ autoUpdatable go
+up2Date :: Maybe Text -> SlackBuilderT ()
+up2Date = \case
+    Nothing -> for_ autoUpdatable go
+    Just packageName
+        | Just foundPackage <- find ((packageName ==) . getField @"name") autoUpdatable ->
+            go foundPackage
+        | otherwise -> throwM $ UpdaterNotFound packageName
   where
     go package = getAndLogLatest package
         >>= mapM_ (updatePackageIfRequired package)
@@ -427,10 +433,10 @@ main = do
     maybe (pure ()) Text.IO.putStrLn latestVersion
   where
     executeCommand = \case
-        CategoryCommand _packageName -> do
+        CategoryCommand -> do
             repository' <- SlackBuilderT $ asks repository
             categories <- liftIO $ findCategory repository'
             liftIO $ print $ splitFileName . makeRelative repository' <$> categories
             pure Nothing
         CheckCommand -> check >> pure Nothing
-        Up2DateCommand -> up2Date >> pure Nothing
+        Up2DateCommand packageName -> up2Date packageName >> pure Nothing

src/SlackBuilder/CommandLine.hs

@@ -16,13 +16,14 @@ import Options.Applicative
     , info
     , fullDesc
     , subparser
-    , command,
+    , command
+    , optional
     )
 
 data SlackBuilderCommand
-    = CategoryCommand Text
+    = CategoryCommand
     | CheckCommand
-    | Up2DateCommand
+    | Up2DateCommand (Maybe Text)
 
 data PackagistArguments = PackagistArguments
     { vendor :: Text
@@ -49,7 +50,7 @@ slackBuilderCommand = subparser
     <> command "check" (info checkCommand mempty)
     <> command "up2date" (info up2DateCommand mempty)
   where
-    categoryCommand = CategoryCommand
-        <$> argument str (metavar "PKGNAM")
+    categoryCommand = pure CategoryCommand
     checkCommand = pure CheckCommand
-    up2DateCommand = pure Up2DateCommand
+    up2DateCommand = Up2DateCommand
+        <$> optional (argument str (metavar "PKGNAM"))