{-# LANGUAGE OverloadedStrings #-}
{-# OPTIONS_HADDOCK show-extensions #-}

-- |
-- Module      :  Yi.Mode.IReader
-- License     :  GPL-2
-- Maintainer  :  yi-devel@googlegroups.com
-- Stability   :  experimental
-- Portability :  portable
--
-- A simple text mode; it does very little besides define a comment
-- syntax. We have it as a separate mode so users can bind the
-- commands to this mode specifically.

module Yi.Mode.IReader where

import Lens.Micro.Platform   ((%~))
import Data.Char      (intToDigit)
import Data.Text      ()
import Yi.Buffer.Misc
import Yi.Editor      (printMsg, withCurrentBuffer)
import Yi.IReader
import Yi.Keymap      (YiM, topKeymapA)
import Yi.Keymap.Keys (choice, important, metaCh, (?>>!))
import Yi.Mode.Common (anyExtension, fundamentalMode)

abstract :: Mode syntax
abstract = fundamentalMode { modeApplies = anyExtension ["irtxt"]
                           , modeKeymap = topKeymapA %~ ikeys }
  where
    ikeys = important $ choice m
    m = [ metaCh '`' ?>>! saveAsNewArticle
        , metaCh '0' ?>>! deleteAndNextArticle
        ]
        ++ map (\x -> metaCh (intToDigit x) ?>>! saveAndNextArticle x) [1..9]

ireaderMode :: Mode syntax
ireaderMode = abstract { modeName = "interactive reading of text" }

ireadMode ::  YiM ()
ireadMode = do
  withCurrentBuffer $ setAnyMode $ AnyMode ireaderMode
  nextArticle
  printMsg "M-` new; M-0 delete; M-[1-9]: save w/higher priority"