{-# LANGUAGE DeriveDataTypeable#-}

{- Extract stuff from Crusader King 3's 00_landed_titles.txt.

   You'll need parsec, syb (and containers). And of course GHC.
   Super dirty code intended to put Perl to shame.
   Boost licensed in lieu of public domain.

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obtaining a copy of the software and accompanying documentation covered by
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The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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-}
module Main where
import Text.Parsec.String
import Text.Parsec.Combinator
import Text.Parsec.Char
import Text.Parsec.Prim

import Text.Parsec.Language (javaStyle)
import qualified Text.Parsec.Token as Tok

import Data.Generics
import Data.Set as Set
import Data.Map as Map
import Data.List (isPrefixOf)
import Control.Monad



main :: IO ()
main    = do{ result <- parseFromFile (optional bom *> titles <* eof) "00_landed_titles.txt"
             ; case result of
                 Left err  -> print err
                 Right ast  -> do
                   let x = everything (Map.unionWith Set.union) (mkQ Map.empty foo) ast

                   forM_ (Map.toDescList x) $ \(n, xs) -> do
                     putStr "##### " >> putStr (show $ Set.size xs)
                     putStr " counties with " >> putStr (show n) >> putStrLn " baronies: "
                     putStrLn . unwords $ Set.toAscList xs
                     putStrLn ""
             }

foo (Def (Ident n) x)  | "c_" `isPrefixOf` n = Map.singleton (everything (+) (mkQ 0 bar) x) (Set.singleton n)
foo _ = Map.empty

bar (Def (Ident n) x) | "b_" `isPrefixOf` n = 1
bar _ = 0




lexer = Tok.makeTokenParser javaStyle { Tok.commentLine = "#"
                                      , Tok.identStart = letter <|> char '@'
                                      , Tok.identLetter = alphaNum <|> oneOf ":_-'"
                                      }
natural = Tok.natural lexer
white = Tok.whiteSpace lexer

bom :: Parser ()
bom = void $ char '\65279'


data Item
  = Number Integer
  | Def Ident Rhs
  | Bare Ident
  deriving (Show, Typeable,Data, Eq, Ord)

newtype Ident = Ident String
  deriving (Show, Typeable,Data, Eq, Ord)
data Rhs = Single Item | Multi [Item] | Hsv ()
  deriving (Show, Typeable,Data, Eq, Ord)

symbol = Tok.symbol lexer

braces = between (symbol "{") (symbol "}")

titles :: Parser [Item]
titles = many1 item


item = Number <$> natural <|> foo
  where
    foo = do
      i <- ident
      o <- optionMaybe $ Tok.reservedOp lexer "="
      case o of
        Nothing -> return $ Bare i
        Just _ -> Def <$> pure i <*> rhs



ident = Ident <$> Tok.identifier lexer

rhs =

  (  (try $ Hsv <$> (void $ symbol "hsv" *> braces (many1 $ Tok.naturalOrFloat lexer))) <?> "hsv") -- Don't tell me that wasn't hacked in after the fact
  <|> (try  (Multi <$> braces titles) <?> "multi")
  <|> ( (Single <$> item) <?> "bare")