63 lines
2.5 KiB
Haskell
63 lines
2.5 KiB
Haskell
{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE TemplateHaskell #-}
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module Network.IRC.Handlers.SongSearch (mkMsgHandler) where
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import qualified Data.Configurator as CF
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import qualified System.Log.Logger as HSL
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import ClassyPrelude
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import Control.Concurrent.Lifted (Chan)
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import Control.Exception.Lifted (evaluate)
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import Control.Monad.Reader (ask)
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import Data.Aeson (FromJSON, parseJSON, Value (..), (.:))
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import Data.Aeson.Types (emptyArray)
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import Data.Text (strip)
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import Network.Curl.Aeson (curlAesonGet, CurlAesonException)
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import Network.HTTP.Base (urlEncode)
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import System.Log.Logger.TH (deriveLoggers)
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import Network.IRC.Types
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$(deriveLoggers "HSL" [HSL.ERROR])
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mkMsgHandler :: BotConfig -> Chan SomeEvent -> MsgHandlerName -> IO (Maybe MsgHandler)
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mkMsgHandler _ _ "songsearch" =
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return . Just $ newMsgHandler { onMessage = songSearch,
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onHelp = return $ singletonMap "!m" helpMsg }
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where
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helpMsg = "Search for song. !m <song> or !m <artist> - <song>"
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mkMsgHandler _ _ _ = return Nothing
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data Song = NoSong | Song { url :: Text, name :: Text, artist :: Text }
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deriving (Show, Eq)
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instance FromJSON Song where
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parseJSON (Object o) = Song <$> o .: "Url" <*> o .: "SongName" <*> o .: "ArtistName"
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parseJSON a | a == emptyArray = return NoSong
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parseJSON _ = mempty
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songSearch :: MonadMsgHandler m => Message -> m (Maybe Command)
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songSearch Message { msgDetails = ChannelMsg { .. }, .. }
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BotConfig { .. } <- ask
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liftIO $ do
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let query = strip . drop 3 $ msg
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mApiKey <- CF.lookup config "songsearch.tinysong_apikey"
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map (Just . ChannelMsgReply) $ case mApiKey of
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Nothing -> do
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errorM "tinysong api key not found in config"
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return $ "Error while searching for " ++ query
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Just apiKey -> do
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let apiUrl = "http://tinysong.com/b/" ++ urlEncode (unpack query)
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++ "?format=json&key=" ++ apiKey
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result <- try $ curlAesonGet apiUrl >>= evaluate
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return $ case result of
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Left (_ :: CurlAesonException) -> "Error while searching for " ++ query
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Right song -> case song of
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Song { .. } -> "Listen to " ++ artist ++ " - " ++ name ++ " at " ++ url
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NoSong -> "No song found for: " ++ query
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| otherwise = return Nothing
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songSearch _ = return Nothing
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