elm.Time.mustache Maven / Gradle / Ivy
module Api.Time exposing
( Posix
, dateToString
, dateTimeToString
, encodeDate
, encodeDateTime
, dateDecoder
, dateTimeDecoder
)
import Http
import Iso8601
import Json.Decode
import Json.Encode
import Time
type alias Posix = Time.Posix
dateToString : Posix -> String
dateToString =
String.left 10 << dateTimeToString
dateTimeToString : Posix -> String
dateTimeToString =
Iso8601.fromTime
encodeDate : Posix -> Json.Encode.Value
encodeDate =
Json.Encode.string << dateToString
encodeDateTime : Posix -> Json.Encode.Value
encodeDateTime =
Json.Encode.string << dateTimeToString
dateDecoder : Json.Decode.Decoder Posix
dateDecoder =
Json.Decode.string
|> Json.Decode.andThen decodeDateIsoString
decodeDateIsoString : String -> Json.Decode.Decoder Posix
decodeDateIsoString str =
case Iso8601.toTime (str ++ "T00:00:00.000Z") of
Result.Ok posix ->
Json.Decode.succeed posix
Result.Err _ ->
Json.Decode.fail ("Invalid calendar date: " ++ str)
dateTimeDecoder : Json.Decode.Decoder Posix
dateTimeDecoder =
Json.Decode.string
|> Json.Decode.andThen decodeDateTimeIsoString
decodeDateTimeIsoString : String -> Json.Decode.Decoder Posix
decodeDateTimeIsoString str =
case Iso8601.toTime str of
Result.Ok posix ->
Json.Decode.succeed posix
Result.Err _ ->
Json.Decode.fail ("Invalid ISO date: " ++ str)
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