-- |
-- Module      :  Processing_mmsyn7ukr
-- Copyright   :  (c) OleksandrZhabenko 2019
-- License     :  MIT
--
-- Maintainer  :  olexandr543@yahoo.com
--
-- A program and a library that can be used as a simple basic interface to some SoX functionality 
-- or for producing the close to proper Ukrainian speech (if you pronounce sounds properly) with 
-- your own recorded voice.
--

module Processing_mmsyn7ukr where

import Numeric
import System.Directory
import Control.Exception (bracketOnError, onException)
import EndOfExe (showE)
import Data.Maybe (fromJust)
import Data.Char
import Data.List (isSuffixOf)
import qualified Data.Vector as V
import qualified Data.ByteString.Lazy as B
import System.Process
import System.IO
import SoXBasics
import Melodics.Ukrainian (convertToProperUkrainian, takeData)
import UkrainianLControl
import CaseBi (getBFst')

-- | Function that being given a path to the installed by the @mmsyn6ukr@ package file produces the corresponding analogous sound with your created 
-- voicing.
produceSound :: FilePath -> IO ()
produceSound file = let file1 = drop (length file - 5) file in do
  let soundUkr = getBFst' ("е", V.fromList . zip ["A.wav", "B.wav", "C.wav", "D.wav", "E.wav", "F.wav", "G.wav", "H.wav",
        "I.wav", "J.wav", "K.wav", "L.wav", "M.wav", "N.wav", "O.wav", "P.wav", "Q.wav", "R.wav",
          "S.wav", "T.wav", "U.wav", "V.wav", "W.wav", "X.wav", "Y.wav", "Z.wav", "a.wav", "b.wav", "c.wav",
            "d.wav", "e.wav", "f.wav"] $ ["а", "б", "в", "г", "д", "дж", "дз", "е", "ж", "з", "и", "й", "к", "л", "м", "н", "о", "п", "р",
               "с", "сь", "т", "у", "ф", "х", "ц", "ць", "ч", "ш", "ь", "і", "ґ"]) $ file1
  putStr "The needed files were NOT created, because the sound was not at the moment of recording! The process will be restarted "
  putStrLn "for the sound. Please, produce a sound during the first 3 seconds (after 0.5 second delay) or specify greater ratio!"
  playA file
  putStrLn "The sound duration is:"
  duration0 <- durationA file
  putStrLn $ showFFloat Nothing duration0 $ show 0
  putStrLn ""
  putStrLn "It means that to produce more than 3 seconds of recording, you must specify at least "
  putStrLn $ "        " ++ show (3.0/(7*duration0)) ++ " as a next step ratio being prompt "
  putStrLn "      OR "
  putStrLn $ "                " ++ show (1.0/(7*duration0)) ++ " per one second but not less than the previous number."
  putStrLn $ "For example for 10 seconds record, please, specify " ++ show (10.0/(7*duration0)) ++ " as a next step ratio."
  longerK0 <- tempS soundUkr
  (_, Just hout, _, _) <- createProcess (proc (fromJust . showE $ "soxi") ["-D", file]) { std_out = CreatePipe }
  x3 <- hGetContents hout
  let longerK = (read x3::Double)*longerK0
  putStrLn "Please, wait for 0.5 second and pronounce the sound representation for the "
  putStrLn ""
  putStrLn $ "                             \"" ++ (if soundUkr /= "ь" then map toUpper soundUkr else soundUkr) ++ "\""
  putStrLn ""
  putStrLn " sound or whatever you would like to be substituted instead (be sensible, please)! "
  if (compare (7*longerK) 3.0 == LT)
    then recA "x.wav" (7*longerK)
    else recA "x.wav" 3.0
  putStrLn "The file is recorded and now will be automatically processed. You will be notificated with the text message in the terminal about the creation of the needed file. Please, wait a little. "
  norm "x.wav"
  noiseProfB "8x.wav"
  noiseReduceB "8x.wav"
  lim0 <- durationA "_8x.wav"
  alterVadB "_8x.wav" lim0
  lim1 <- durationA "7_8x.wav"
  if lim1 <= 0.0
    then beginProcessing file file1 soundUkr
    else do
      alterVadE "7_8x.wav" lim1
      sincA "67_8x.wav"
      resampleA "4.67_8x.wav" (22050::Int)
      quarterSinFade "34.67_8x.wav"
      norm "434.67_8x.wav"
      volS2 "8434.67_8x.wav" file
      renameFile "8.434.67_8x.wav" file1
      cleanTemp

-- | Function 'beginProcessing' is used to catch the variant where the sound is fully cut by the SoX because the sound was created in inappropriate time.
-- It returns the process to the beginning of the sound recording.
beginProcessing :: FilePath -> FilePath -> String -> IO ()
beginProcessing file file1 soundUkr = do
  cleanTemp
  putStr "The needed files were NOT created, because the sound was not at the moment of recording! The process will be restarted "
  putStrLn "for the sound. Please, produce a sound during the first 3 seconds (after 0.5 second delay) or specify greater ratio!"
  putStrLn $ "Listen to the \"" ++ soundUkr ++ "\" sound and note first of all its duration. "
  playA file
  putStrLn "The sound duration is:"
  duration0 <- durationA file
  putStrLn $ showFFloat Nothing duration0 $ show 0
  putStrLn ""
  putStrLn "It means that to produce more than 3 seconds of recording, you must specify at least "
  putStrLn $ "        " ++ show (3.0/(7*duration0)) ++ " as a next step ratio being prompt "
  putStrLn "      OR "
  putStrLn $ "                " ++ show (1.0/(7*duration0)) ++ " per one second but not less than the previous number."
  putStrLn $ "For example for 10 seconds record, please, specify " ++ show (10.0/(7*duration0)) ++ " as a next step ratio."
  longerK0 <- tempS soundUkr
  (_, Just hout, _, _) <- createProcess (proc (fromJust . showE $ "soxi") ["-D", file]) { std_out = CreatePipe }
  x3 <- hGetContents hout
  let longerK = (read x3::Double)*longerK0
  putStrLn "Please, wait for 0.5 second and pronounce the sound representation for the "
  putStrLn ""
  putStrLn $ "                             \"" ++ (if soundUkr /= "ь" then map toUpper soundUkr else soundUkr) ++ "\""
  putStrLn ""
  putStrLn " sound or whatever you would like to be substituted instead (be sensible, please)! "
  if (compare (7*longerK) 3.0 == LT)
    then recA "x.wav" (7*longerK)
    else recA "x.wav" 3.0
  putStrLn "The file is recorded and now will be automatically processed. You will be notificated with the text message in the terminal about the creation of the needed file. Please, wait a little. "
  norm "x.wav"
  noiseProfB "8x.wav"
  noiseReduceB "8x.wav"
  lim0 <- durationA "_8x.wav"
  alterVadB "_8x.wav" lim0
  lim1 <- durationA "7_8x.wav"
  if lim1 <= 0.0
    then beginProcessing file file1 soundUkr
    else do
      alterVadE "7_8x.wav" lim1
      sincA "67_8x.wav"
      resampleA "4.67_8x.wav" (22050::Int)
      quarterSinFade "34.67_8x.wav"
      norm "434.67_8x.wav"
      volS2 "8434.67_8x.wav" file
      renameFile "8.434.67_8x.wav" file1
      cleanTemp

-- | Function to get the @Double@ value, which shows in how many times you expect that your sound representation will be longer than the one provided by the @mmsyn6ukr@ package. 
tempS :: String -> IO Double
tempS soundUkr = onException (do
    putStrLn "In how many times do you think your sound representing "
    putStrLn ""
    putStrLn $ "                     \"" ++ (if soundUkr /= "ь" then map toUpper soundUkr else soundUkr) ++ "\""
    putStrLn ""
    putStrLn "will sound longer than the recently played one? Specify as a Double value without \"e\" notation. "
    longivityY <- getLine
    let long = read longivityY::Double in return long) (do
      putStrLn "Please, specify the value of the Double type!"
      tempS soundUkr)

-- | Function 'cleanTemp' removes all the intermediate temporary files in the directory where it is called from.
cleanTemp :: IO ()
cleanTemp = do
  filenames <- getDirectoryContents =<< getCurrentDirectory
  let rems = filter (\x -> head x `elem` (['2'..'9'] ++ "_" ++ "x")) filenames in mapM_ removeFile rems