{-# OPTIONS_GHC -threaded -rtsopts #-}
{-# OPTIONS_HADDOCK show-extensions #-}
{-# LANGUAGE BangPatterns #-}

-- |
-- Module      :  Main
-- Copyright   :  (c) OleksandrZhabenko 2020-2021
-- 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 Phonetic.Languages.Array.Ukrainian.PropertiesSyllablesG2
import Text.Read (readMaybe)
import Data.Maybe (fromMaybe)
import System.Environment (getArgs)
import Data.Char (isDigit)
import Data.List (nub)
import Phonetic.Languages.Common
import Phonetic.Languages.Lines

-- | The function allows to rewrite the Ukrainian text in the file given as the first command line argument to a new file. In between, it is rewritten
-- so that every last word on the lines is preserved at its position, and the rest of the line is rearranged using the specified other command line
-- arguments. They are general for the whole program. The first command line argument is a FilePath to the file with a Ukrainian text to be rewritten.
-- The second one is a variant of the \"properties\" used to evaluate the variants.
-- The further command line arguments are: the number of the intervals and the numbers of the intervals
-- that are swapped with the maximum one so that they are available for further usage by the program. See documentation for @uniqueness-periods-vector-filters@
-- package
-- 'https://hackage.haskell.org/package/uniqueness-periods-vector-filters'
--
-- @since 0.2.0.0
-- You can also run program in a \'comparative\' mode by specifying \"+c\" as one of the command line arguments and then
-- three files -- the first two -- the existing ones with probably rewritten text by the program for different arguments
-- and the third one is the resulting file. While running in such a mode the program outputs line-by-line the contents of
-- the two first files and writes one of them (or an empty line if neither one) to the third file.
--
-- @ since 0.6.0.0
-- There is also the possibility to use \'line growing\' that is to use the 'prepereGrowTextMN' function
-- with the 'Int' arguments from the first argument tuple. This allows to rearrange the given text and then
-- to rewrite it. For this you need to specify somewhere (withot \"+c\" modifier) \"+g73\" or something similar.
--
-- @ since 0.12.0.0
-- You can run the comparative mode on the up to 7 different files simultaneously.
main :: IO ()
main = do
 args00 <- getArgs
 let multiple = if null . filter (== "+m") $ args00 then 0 else 1
     args0
       | multiple == 1 = takeWhile (/= "+m") args00 `mappend` drop 1 (dropWhile (/= "-m") args00)
       | otherwise = args00
     coeffs = readCF . concat . take 1 $ args0 -- The first command line argument. If not sure, pass just \"1_\".
     compare2 = (\xs -> if null xs then False else True) . filter (== "+c") $ args0
 if compare2 then do
   let args1 = filter (/= "+c") args0
       (args2,file3)
         | null args1 = ([],[])
         | otherwise = (init . nub $ args1,last args1)
   if null file3 then do
       putStrLn "Please, specify the file to save the data to. "
       file3 <- getLine
       compareFilesToOneCommon args2 file3
   else compareFilesToOneCommon args2 file3
 else do
  let growing = filter ((== "+g") . (take 2)) args0
      (gr1,gr2)
            | null growing = (0,0)
            | otherwise = let (nms,mms) = splitAt 1 . drop 2 . take 4 $ growing
                              nm = readMaybe (concat nms)::Maybe Int
                              mm = readMaybe (concat mms)::Maybe Int in case (nm,mm) of
                                  (Just n4,Just m4) -> if (m4 `rem` 7) < (n4 `rem` 7) then (n4 `rem` 7 + 1, m4 `rem` 7 + 1) else (0,0)
                                  _ -> (0,0)
  if isPair coeffs then do
   let !numericArgs = filter (all isDigit) . drop 3 $ args0
       !choices
          | multiple == 1 = drop 1 . dropWhile (/= "+m") . takeWhile (/= "-m") $ args00
          | otherwise = drop 2 . take 3 $ args0
       !numberI = fromMaybe 1 (readMaybe (concat . take 1 $ numericArgs)::Maybe Int)
       !file = concat . drop 1 . take 2 $ args0
   generalProcessment (gr1,gr2) coeffs numericArgs choices numberI file
  else do
   let !numericArgs = filter (all isDigit) . drop 2 $ args0
       !choices
          | multiple == 1 = drop 1 . dropWhile (/= "+m") . takeWhile (/= "-m") $ args00
          | otherwise = drop 1 . take 2 $ args0
       !numberI = fromMaybe 1 (readMaybe (concat . take 1 $ numericArgs)::Maybe Int)
       !file = concat . take 1 $ args0
   generalProcessment (gr1,gr2) coeffs numericArgs choices numberI file