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 GADTs #-}
  {-# LANGUAGE OverloadedStrings #-}
  {-# LANGUAGE NoRebindableSyntax #-}
  
  module Duckling.Numeral.LO.Rules
    ( rules
    ) where
  
  import Data.HashMap.Strict (HashMap)
  import Data.Maybe
  import Data.String
  import Data.Text (Text)
  import Prelude
  import qualified Data.HashMap.Strict as HashMap
  import qualified Data.Text as Text
  
  import Duckling.Dimensions.Types
  import Duckling.Numeral.Helpers
  import Duckling.Numeral.Types (NumeralData (..))
  import Duckling.Regex.Types
  import Duckling.Types
  import qualified Duckling.Numeral.Types as TNumeral
  
  ruleNumeralMap :: HashMap Text Integer
  ruleNumeralMap = HashMap.fromList
    [ ( "ສູນ", 0 )
    , ( "ໜຶ່ງ", 1 )
    , ( "ສອງ", 2 )
    , ( "ສາມ", 3 )
    , ( "ສີ່", 4 )
    , ( "ຫ້າ", 5)
    , ( "ຫົກ", 6)
    , ( "ເຈັດ", 7)
    , ( "ແປດ", 8)
    , ( "ເກົ້າ", 9)
    , ( "ສິບ", 10)
    ]
  
  ruleNumeral :: Rule
  ruleNumeral = Rule
    { name = "number (0..10)"
    , pattern =
      [ regex "(ສູນ|ໜຶ່ງ|ສອງ|ສາມ|ສີ່|ຫ້າ|ຫົກ|ເຈັດ|ແປດ|ເກົ້າ|ສິບ)"
      ]
    , prod = \tokens -> case tokens of
        (Token RegexMatch (GroupMatch (match:_)):_) ->
          HashMap.lookup (Text.toLower match) ruleNumeralMap >>= integer
        _ -> Nothing
    }
  
  elevenToNineteenMap :: HashMap Text Integer
  elevenToNineteenMap = HashMap.fromList
    [ ( "ສິບເອັດ", 11 )
    , ( "ສິບສອງ", 12 )
    , ( "ສິບສາມ", 13 )
    , ( "ສິບສີ່", 14 )
    , ( "ສິບຫ້າ", 15 )
    , ( "ສິບຫົກ", 16 )
    , ( "ສິບເຈັດ", 17 )
    , ( "ສິບແປດ", 18 )
    , ( "ສິບເກົ້າ", 19 )
    ]
  
  ruleElevenToNineteen :: Rule
  ruleElevenToNineteen = Rule
    { name = "number (11..19)"
    , pattern =
      [ regex "(ສິບເອັດ|ສິບສອງ|ສິບສາມ|ສິບສີ່|ສິບຫ້າ|ສິບຫົກ|ສິບເຈັດ|ສິບແປດ|ສິບເກົ້າ)"
      ]
    , prod = \tokens -> case tokens of
        (Token RegexMatch (GroupMatch (match:_)):_) ->
          HashMap.lookup (Text.toLower match) elevenToNineteenMap >>= integer
        _ -> Nothing
    }
  
  twentyoneToTwentynineMap :: HashMap Text Integer
  twentyoneToTwentynineMap = HashMap.fromList
    [ ( "ຊາວເອັດ", 21 )
    , ( "ຊາວສອງ", 22 )
    , ( "ຊາວສາມ", 23 )
    , ( "ຊາວສີ່", 24 )
    , ( "ຊາວຫ້າ", 25 )
    , ( "ຊາວຫົກ", 26 )
    , ( "ຊາວເຈັດ", 27 )
    , ( "ຊາວແປດ", 28 )
    , ( "ຊາວເກົ້າ", 29 )
    ]
  
  ruleTwentyoneToTwentynine :: Rule
  ruleTwentyoneToTwentynine = Rule
    { name = "number (21..29)"
    , pattern =
      [ regex "(ຊາວເອັດ|ຊາວສອງ|ຊາວສາມ|ຊາວສີ່|ຊາວຫ້າ|ຊາວຫົກ|ຊາວເຈັດ|ຊາວແປດ|ຊາວເກົ້າ)"
      ]
    , prod = \tokens -> case tokens of
        (Token RegexMatch (GroupMatch (match:_)):_) ->
          HashMap.lookup (Text.toLower match) twentyoneToTwentynineMap >>= integer
        _ -> Nothing
    }
  
  tensMap :: HashMap Text Integer
  tensMap = HashMap.fromList
    [ ( "ຊາວ", 20 )
    , ( "ສາມສິບ", 30 )
    , ( "ສິບສີ່", 40 )
    , ( "ຫ້າສິບ", 50 )
    , ( "ຫົກສິບ", 60 )
    , ( "ເຈັດສິບ", 70 )
    , ( "ແປດສິບ", 80 )
    , ( "ເກົ້າສິບ", 90 )
    ]
  
  ruleTens :: Rule
  ruleTens = Rule
    { name = "integer (20,30..90)"
    , pattern =
      [ regex "(ຊາວ|ສາມສິບ|ສິບສີ່|ຫ້າສິບ|ຫົກສິບ|ເຈັດສິບ|ແປດສິບ|ເກົ້າສິບ)"
      ]
    , prod = \tokens -> case tokens of
        (Token RegexMatch (GroupMatch (match:_)):_) ->
          HashMap.lookup (Text.toLower match) tensMap >>= integer
        _ -> Nothing
    }
  
  ruleCompositeTens :: Rule
  ruleCompositeTens = Rule
    { name = "integer ([3-9][1-9])"
    , pattern =
      [ regex "(ສາມສິບ|ສິບສີ່|ຫ້າສິບ|ຫົກສິບ|ເຈັດສິບ|ແປດສິບ|ເກົ້າສິບ)(ໜຶ່ງ|ສອງ|ສາມ|ສີ່|ຫ້າ|ຫົກ|ເຈັດ|ແປດ|ເກົ້າ)"
      ]
    , prod = \tokens -> case tokens of
        (Token RegexMatch (GroupMatch (m1:m2:_)):_) -> do
          v1 <- HashMap.lookup (Text.toLower m1) tensMap
          v2 <- HashMap.lookup (Text.toLower m2) ruleNumeralMap
          integer $ v1 + v2
        _ -> Nothing
    }
  
  rules :: [Rule]
  rules =
    [ ruleNumeral
    , ruleElevenToNineteen
    , ruleTwentyoneToTwentynine
    , ruleTens
    , ruleCompositeTens
    ]
  