Allow looking on the text page for the latest version

app/SlackBuilder/CommandLine.hs

@@ -7,6 +7,7 @@ module SlackBuilder.CommandLine
     ) where
 
 import Data.Text (Text)
+import qualified Data.Text as Text
 import Options.Applicative
     ( Parser
     , ParserInfo(..)
@@ -29,7 +30,6 @@ data SlackBuilderCommand
     | CloneCommand Text Text Text
     | DownloadAndDeployCommand Text Text
     | Up2DateCommand
-    deriving (Eq, Show)
 
 data PackagistArguments = PackagistArguments
     { vendor :: Text
@@ -42,11 +42,14 @@ data GhArguments = GhArguments
     , transform :: Maybe Text
     } deriving (Eq, Show)
 
-newtype TextArguments = TextArguments Text
-    deriving (Eq, Show)
+data TextArguments = TextArguments
+    { versionPicker :: Text -> Text
+    , textURL :: Text
+    }
 
 textArguments :: Parser TextArguments
-textArguments = TextArguments <$> argument str (metavar "URL")
+textArguments = TextArguments Text.strip
+    <$> argument str (metavar "URL")
 
 slackBuilderParser :: ParserInfo SlackBuilderCommand
 slackBuilderParser = info slackBuilderCommand fullDesc

app/SlackBuilder/Updater.hs

@@ -107,11 +107,11 @@ latestPackagist PackagistArguments{..} = do
         >>= fmap (version . fst) . Vector.uncons
 
 latestText :: TextArguments -> SlackBuilderT (Maybe Text)
-latestText (TextArguments textArguments) = do
-    uri <- liftIO $ useHttpsURI <$> mkURI textArguments
+latestText TextArguments{..} = do
+    uri <- liftIO $ useHttpsURI <$> mkURI textURL
     packagistResponse <- traverse (runReq defaultHttpConfig . go . fst) uri
 
-    pure $ Text.strip . Text.Encoding.decodeASCII . responseBody
+    pure $ versionPicker . Text.Encoding.decodeUtf8 . responseBody
         <$> packagistResponse
   where
     go uri = req GET uri NoReqBody bsResponse mempty