Allow looking on the text page for the latest version

Rakefile

@@ -43,27 +43,6 @@ task :hhvm, [:version] do |_, arguments|
   update_slackbuild_version 'development/hhvm', package.version
 end
 
-task :webex do
-  tarball = 'slackbuilds/network/webex/Webex.deb'
-  uri = 'https://binaries.webex.com/WebexDesktop-Ubuntu-Official-Package/Webex.deb'
-  checksum = SlackBuilder.download URI(uri), tarball
-
-  last_stdout, = Open3.pipeline_r ['ar', 'p', tarball, 'control.tar.gz'], ['tar', 'zxO', './control']
-  version = last_stdout.read.lines
-    .find { |line| line.start_with? 'Version: ' }
-    .split.last
-
-  package = Package.new 'network/webex',
-    version: version,
-    homepage: 'https://www.webex.com'
-
-  write_info package,
-    downloads: [Download.new(uri, checksum, is64: true)]
-
-  update_slackbuild_version 'network/webex', package.version
-  commit 'network/webex', package.version
-end
-
 AUTO_UPDATABLE = {
   'dmd' => [SlackBuilder::LatestText.new('https://downloads.dlang.org/releases/LATEST')]
 }.freeze

app/Main.hs

@@ -2,6 +2,8 @@ module Main
     ( main
     ) where
 
+import Data.Char (isNumber)
+import Control.Applicative (Applicative(liftA2))
 import Data.List.NonEmpty (NonEmpty(..))
 import qualified Data.List.NonEmpty as NonEmpty
 import Control.Monad.IO.Class (MonadIO(..))
@@ -147,6 +149,25 @@ autoUpdatable =
         , name = "rdiff-backup"
         , reupload = Just mempty
         }
+    , Package
+        { latest =
+            let needle = "Linux—"
+                textArguments = TextArguments
+                    { textURL = "https://help.webex.com/en-us/article/mqkve8/Webex-App-%7C-Release-notes"
+                    , versionPicker = Text.takeWhile (liftA2 (||) (== '.') isNumber)
+                        . Text.drop (Text.length needle)
+                        . snd
+                        . Text.breakOn needle
+                    }
+                latest' = latestText textArguments
+                template = Package.DownloadTemplate $ pure
+                    $ Package.StaticPlaceholder
+                        "https://binaries.webex.com/WebexDesktop-Ubuntu-Official-Package/Webex.deb"
+             in Package.Updater latest' template
+        , category = "network"
+        , name = "webex"
+        , reupload = Nothing
+        }
     ]
 
 up2Date :: SlackBuilderT ()

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