88 lines
1.9 KiB
Elm
88 lines
1.9 KiB
Elm
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module Route.SearchQuery exposing
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( RawQuery
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, SearchQuery
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, absolute
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, searchQueryToString
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, searchString
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, toRawQuery
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, toSearchQuery
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)
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import Dict exposing (Dict)
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import Url
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import Url.Builder
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-- RawQuery
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type RawQuery
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= RawQuery (Dict String String)
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chunk : String -> String -> Maybe ( String, String )
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chunk sep str =
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case String.split sep str of
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[] ->
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Nothing
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[ key ] ->
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Just ( key, "" )
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key :: xs ->
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Just ( key, String.join sep xs )
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toRawQuery : Url.Url -> Maybe RawQuery
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toRawQuery =
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Maybe.map (RawQuery << Dict.fromList << List.filterMap (chunk "=") << String.split "&")
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<< .query
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-- SearchQuery
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{-| This is type safe wrapper for working with search queries in url
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-}
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type SearchQuery
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= SearchQuery String
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searchString : String -> RawQuery -> Maybe SearchQuery
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searchString name (RawQuery dict) =
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Maybe.map SearchQuery <| Dict.get name dict
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searchQueryToString : SearchQuery -> Maybe String
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searchQueryToString (SearchQuery str) =
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Url.percentDecode <| String.replace "+" "%20" str
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toSearchQuery : String -> String -> ( String, SearchQuery )
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toSearchQuery name query =
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( name, SearchQuery <| String.replace "%20" "+" <| Url.percentEncode query )
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{-| Build absolute URL with support for search query strings
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-}
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absolute : List String -> List Url.Builder.QueryParameter -> List ( String, SearchQuery ) -> String
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absolute path query searchQuery =
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let
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searchStrings =
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List.map (\( name, SearchQuery val ) -> name ++ "=" ++ val) searchQuery
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|> String.join "&"
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in
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Url.Builder.absolute path query
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|> (\str ->
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str
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++ (case query of
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[] ->
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"?" ++ searchStrings
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_ ->
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"&" ++ searchStrings
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)
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)
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