{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards   #-}

module Main where

import           Data.Aeson                 (encode)
import qualified Data.ByteString.Lazy       as LBS
import qualified Data.ByteString.Lazy.Char8 as C8LBS
import           Data.Monoid                ((<>))
import qualified Data.Text                  as Text
import           Network.Mime               (defaultMimeLookup)
import           Options.Applicative
import           System.FilePath            (splitFileName)
import           VoicebaseClient

data Options = Options
    {
      bearToken :: BearerToken,
      file      :: FilePath
    }


sample :: Parser Options
sample = Options
      <$> strOption
          ( long "bearer-token"
         <> metavar "TOKEN"
         <> help "The bearer token obtained from voicebase" )
      <*> strOption
          ( long "file"
         <> metavar "PATH"
         <> help "The file to be posted" )

main :: IO ()
main = execParser opts >>= withBearAndFile
  where
    opts = info (sample <**> helper)
      ( fullDesc
     <> progDesc "Transcribe a file with voicebase"
     <> header "Voicebase transcriber!" )

defaultConfiguration = Configuration {
  channels = Just Channels {
    left = Speaker "Agent"
    , right = Speaker "Caller"
  },
  language = EnglishAus
}

withBearAndFile :: Options -> IO()
withBearAndFile Options{..} = do
    bytes <- LBS.readFile file
    result <- transcribeBytes defaultConfiguration bearToken (LazyByteFile bytes filename)
    case result of
      Left error -> print error
      Right r    -> C8LBS.putStrLn $ encode $ r
  where
    filename = defaultMimeLookup . Text.pack . snd . splitFileName $ file