-- |
-- Module      :  Main
-- Copyright   :  (c) OleksandrZhabenko 2020
-- License     :  MIT
-- Stability   :  Experimental
-- Maintainer  :  olexandr543@yahoo.com
--
-- Inspired by: https://functional-art.org/2020/papers/Poetry-OleksandrZhabenko.pdf from the https://functional-art.org/2020/performances ; 
-- Allows to rewrite the given text (usually a poetical one). 

module Main where

import qualified Data.Vector as V
import Data.List (intercalate,intersperse)
import System.IO
import String.Languages.UniquenessPeriods.Vector
import Languages.UniquenessPeriods.Vector.General.Debug
import Languages.UniquenessPeriods.Vector.Properties
import Melodics.Ukrainian
import System.Environment
import Languages.Phonetic.Ukrainian.PrepareText
import Languages.UniquenessPeriods.Vector.Data
import Languages.UniquenessPeriods.Vector.Auxiliary

main :: IO ()
main = do
  args <- getArgs
  let file = concat . take 1 $ args
  contents <- readFile file
  let flines = prepareText contents
      lasts = map (\ts -> if null . words $ ts then [] else last . words $ ts) flines
      zs = lastFrom3 . headU2 . fst . get22 . uniqNProperties2GN " 01-" (PA [] (concat . take 1 $ lasts)) 1 1 (V.singleton (oneProperty)) (uniquenessPeriodsVector3 " 01-" . 
              aux0 . convertToProperUkrainian) (justOneValue2Property . diverse2) . unwords . init . words . concat . take 1 $ flines 
  toFile (file ++ "new.txt") (zs:(noDoubleWords . circle2 (concat . take 1 $ lasts) . drop 1 $ flines))

circle2 :: String -> [String] -> [String]
circle2 xs xss
 | null xss = []
 | otherwise = let (zss,tss) = splitAt 1 xss in do
    let rs = words . concat $ zss
        ws = lastFrom3 . headU2 . fst . get22 . 
               uniqNProperties2GN " 01-" (PA xs (if null rs then [] else last rs)) 1 1 (V.singleton (oneProperty)) (uniquenessPeriodsVector3 " 01-" . 
                 aux0 . convertToProperUkrainian) (justOneValue2Property . diverse2) . unwords $ 
                   if null rs then [] else init rs in ws:circle2 (if null rs then [] else last rs) tss

headU2 :: [UniquenessG1 a b] -> UniquenessG1 a b
headU2 zs 
 | null zs = ([],V.empty,[])
 | otherwise = head zs

noDoubleWords :: [String] -> [String]
noDoubleWords xss = map (unwords . drop 1 . words) xss

-- | Auxiliary printing function to define the line ending needed to be printed by 'printUniquenessG1List' function in some cases. 
newLineEnding :: String
newLineEnding 
  | nativeNewline == LF = "\n"
  | otherwise = "\r\n"