39 lines
1.4 KiB
Haskell
39 lines
1.4 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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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 isAdd) $ Text.group 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 = foldMap makeMultiSet mTitle
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dNameFrags = makeMultiSet dName
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fNameFrags = makeMultiSet fName
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sNameFrags = makeMultiSet sName
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titleLetters = foldMap (Set.fromList . 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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isAdd = (`Set.member` addLetters)
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splitAdd = Text.split isAdd
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makeMultiSet = MultiSet.fromList . filter (not . Text.null) . splitAdd
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