URL template extractor using scalatra routes

gistfile1.txt

  implicit class PagePatternHelper(val sc: StringContext) extends AnyVal {
    def page(args: Any*): PagePattern = {
      val template = sc.standardInterpolator(treatEscapes, args)
      val templateUrl = rl.Uri(template)
      val path = templateUrl.path

      val routeMatcher = new SinatraRouteMatcher(path)

      val queryMultiParams = rl.MapQueryString.parseString(templateUrl.query.rawValue)
      val queryParams      = queryMultiParams.mapValues(_.head)

      PagePattern(routeMatcher, queryParams)
    }
  }


  case class PagePattern(routeMatcher: SinatraRouteMatcher, expectedQueryParams: Map[String, String]) {
    def unapply(path: String): Option[Map[String,String]] = {
      val url = rl.Uri(path)
      for {
        baseMultiParams <- routeMatcher(url.path)
      } yield {
        val baseParams       = baseMultiParams.mapValues(_.head)
        val queryMultiParams = rl.MapQueryString.parseString(url.query.rawValue)
        val queryParams      = queryMultiParams collect {case (k,vh::vt) => k->vh}

        baseParams ++ queryParams
      }
    }
  }

// usage:

val SomePagePage = page"""/:tvc/tv/show/:beid/:show_name?_zt=:time&_zp=:ProviderID&_zr=:RegionID&_zs=:ServiceID"""

def parsePage(page: String) = page match {
  case ShowPage(params) => params
  case _ => ???
}