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AccessToken.scala
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AccessToken.scala
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/*
* Copyright 2021 Arman Bilge
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package gcp4s.auth
import cats.Functor
import cats.data.EitherT
import cats.effect.kernel.Clock
import cats.effect.kernel.Concurrent
import cats.syntax.all.*
import io.circe.Decoder
import org.http4s.EntityDecoder
import org.http4s.circe.jsonOf
import scala.concurrent.duration.*
final case class AccessToken(
token: String,
expiresAt: FiniteDuration
):
def expiresSoon[F[_]: Functor: Clock](in: FiniteDuration = 1.minute): F[Boolean] =
Clock[F].realTime.map { now => expiresAt < now + in }
object AccessToken:
given [F[_]: Concurrent: Clock]: EntityDecoder[F, AccessToken] =
jsonOf[F, AccessTokenResponse].flatMapR {
case AccessTokenResponse(access_token, token_type, expires_in) =>
EitherT.liftF(Clock[F].realTime.map { now =>
AccessToken(access_token, now + expires_in.seconds)
})
}
final private[auth] case class AccessTokenResponse(
access_token: String,
token_type: String,
expires_in: Int)
derives Decoder