36 lines
1.3 KiB
Haskell
36 lines
1.3 KiB
Haskell
module Handler.Utils.Profile
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( validDisplayName
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) where
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import Import.NoFoundation
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import qualified Data.Text as Text
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import qualified Data.MultiSet as MultiSet
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import qualified Data.Set as Set
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import qualified Data.Char as Char
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validDisplayName :: Maybe UserTitle
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-> UserFirstName
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-> UserSurname
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-> UserDisplayName
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-> Bool
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validDisplayName (fmap Text.strip -> mTitle) (Text.strip -> fName) (Text.strip -> sName) (Text.strip -> dName)
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= and [ dNameFrags `MultiSet.isSubsetOf` MultiSet.unions [titleFrags, fNameFrags, sNameFrags]
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, sName `Text.isInfixOf` dName
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, all ((<= 1) . Text.length) . filter (Text.any Char.isSpace) $ Text.groupBy ((==) `on` Char.isSpace) dName
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, dNameLetters `Set.isSubsetOf` Set.unions [titleLetters, fNameLetters, sNameLetters, addLetters]
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]
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where
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titleFrags = MultiSet.fromList $ maybe [] Text.words mTitle
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fNameFrags = MultiSet.fromList $ Text.words fName
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sNameFrags = MultiSet.fromList $ Text.words sName
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dNameFrags = MultiSet.fromList $ Text.words dName
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titleLetters = Set.fromList $ maybe [] unpack mTitle
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fNameLetters = Set.fromList $ unpack fName
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sNameLetters = Set.fromList $ unpack sName
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dNameLetters = Set.fromList $ unpack dName
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addLetters = Set.fromList [' ']
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