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• ExternalLinks.scala

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com.gu.facia.api.utils.ExternalLinks.scala Maven / Gradle / Ivy

package com.gu.facia.api.utils

import java.net.URI

import scala.util.Try

object ExternalLinks {
  val origins = List(
    "http://www.theguardian.com",
    "https://www.theguardian.com",
    "https://profile.theguardian.com",
    "https://composer.gutools.co.uk",
    "https://composer.release.dev-gutools.co.uk",
    "https://composer.code.dev-gutools.co.uk",
    "http://preview.gutools.co.uk",
    "https://preview.gutools.co.uk")

  val guardianDomains: List[String] = origins flatMap { uri =>
    Try {
      new URI(uri).getHost.stripPrefix("www.")}
    .toOption
  }

  def external(url: String): Boolean =
    Try(Option(new URI(url).getHost)
      .exists({ host => !guardianDomains.exists({ domain =>
        host == domain || host.endsWith(s".$domain")})}))
      .getOrElse(false)

  def internalPath(url: String) =
    if (external(url))
      None
    else
      Try {
        Option(new URI(url).getPath)}
      .toOption.flatten
}