{-# LANGUAGE DeriveDataTypeable #-}

module Generics.GPAH.Conf where

import System.IO.Unsafe
import System.Console.CmdArgs
import Control.Monad
import Data.Maybe (maybe)

-- easier to have a top-level state for the conf
conf = unsafePerformIO getConf

getConf = cmdArgs confOpt

data Conf = Conf {
    fetchOpt :: Bool
    , derivingOpt :: Maybe FilePath
    , functionOpt :: Maybe FilePath
    , uniplateOpt :: Maybe FilePath
    , hackageOpt :: Maybe FilePath
    , dateOpt :: Maybe FilePath
    , hackageDirOpt :: FilePath
    , hackageLogOpt :: FilePath
    , cppOpt :: Maybe FilePath
    , intOpt :: Maybe FilePath
    , dveOpt :: Maybe FilePath
  } deriving (Show, Eq, Data, Typeable)

hasSubComponent :: Conf -> Bool
hasSubComponent (Conf fet der fun upl hac dte _ _ cpp int dve) = 
    maybe False (const True)
              (der `mplus` fun `mplus` upl `mplus` hac `mplus` dte `mplus` cpp `mplus` int `mplus` dve)

confOpt = Conf {
             fetchOpt = def &= explicit &= name "fetch" &= typFile &= help "Fetch the Hackage archive tarball and Hackage activity log"
           , derivingOpt = def &= explicit  &= name "d" &= name "deriving" &= opt "d_analysis.csv" &= typFile &= help "Run the deriving analysis and output it to the specified file"
           , functionOpt = def &= explicit  &= name "f"  &= name "function" &= opt "f_analysis.csv" &= typFile &= help "Run the function analysis and output it to the specified file"
           , uniplateOpt = def &= explicit  &= name "u"  &= name "uniplate" &= opt "uni_analysis.csv" &= typFile &= help "Run the uniplate analysis and output it to the specified file"
           , hackageOpt = def &= explicit  &= name "h"  &= name "misc_hackage" &= opt "misc_hackage.csv" &= typFile &= help "Print general analysis info or output it to the specified file"
           , dateOpt = def &= explicit  &= name "t" &= name "misc_date" &= opt "misc_date.csv" &= typFile &= help "Get syb+uniplate date info and output it to the specified file (implies --misc_hackage)"
           , hackageDirOpt = "hackage" &= explicit  &= name "hackage-dir" &= typDir &= help "Set the hackage archive directory"
           , hackageLogOpt = "hackage.log" &= explicit  &= name "hackage-log" &= typFile &= help "Set the hackage archive log file"
           , cppOpt = def &= explicit &= name "c"  &= name "cpp" &= opt "c_analysis.csv" &= typFile &= help "Run preprocessing in hackage that yields an analysis with less failed-to-parse modules"
           , intOpt = def &= explicit &= name "i"  &= name "interpret" &= opt "i_analysis.csv" &= typFile &= help "Do type-checking interpretation on modules that depend on SYB or Uniplate "
           , dveOpt = def &= explicit &= name "e"  &= name "derive" &= opt "e_analysis.csv" &= typFile &= help "Do analysis on packages that build on derive"
           } &= summary "Generic Programming Use in Hackage Project v0.0.1" &= program "gpah"