content: -- Copyright (c) 2016-present, Facebook, Inc.
  -- All rights reserved.
  --
  -- This source code is licensed under the BSD-style license found in the
  -- LICENSE file in the root directory of this source tree.
  
  
  {-# LANGUAGE OverloadedStrings #-}
  
  module Duckling.TimeGrain.BG.Rules
    ( rules
    ) where
  
  import Data.String
  import Data.Text (Text)
  import Prelude
  
  import Duckling.Dimensions.Types
  import Duckling.TimeGrain.Types
  import Duckling.Types
  
  grains :: [(Text, String, Grain)]
  grains = [ ("second (grain) ", "сек(унд(а|и))?",               Second)
           , ("minute (grain)" , "мин(ут(а|и))?",                Minute)
           , ("hour (grain)"   , "ч(ас(ове(те)?|а|ът)?)?",       Hour)
           , ("day (grain)"    , "ден(а|я(т)?)?|дни(те)?",       Day)
           , ("week (grain)"   , "седмица(та)?|седмици(те)?",    Week)
           , ("month (grain)"  , "месец(и(те)?|а|ът)?",          Month)
           , ("quarter (grain)", "тримесечи(я|е(то|та)?)",       Quarter)
           , ("year (grain)"   , "г(од(ин(а(та)?|и(те)?))?)?",   Year)
           ]
  
  rules :: [Rule]
  rules = map go grains
    where
      go (name, regexPattern, grain) = Rule
        { name = name
        , pattern = [regex regexPattern]
        , prod = \_ -> Just $ Token TimeGrain grain
        }
  