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package xyz.driver.pdsuicommon.http
import akka.http.scaladsl.server._
import akka.http.scaladsl.server.Directives._
import akka.http.scaladsl.model._
import xyz.driver.core.app.DriverApp
import xyz.driver.pdsuicommon.error._
import xyz.driver.pdsuicommon.error.DomainError._
import xyz.driver.pdsuicommon.error.ErrorsResponse.ResponseError
import xyz.driver.pdsuicommon.parsers._
import xyz.driver.pdsuicommon.db.{Pagination, SearchFilterExpr, Sorting}
import xyz.driver.pdsuicommon.domain._
import akka.http.scaladsl.marshallers.sprayjson.SprayJsonSupport._
import xyz.driver.core.generators
import xyz.driver.core.rest.ContextHeaders
import xyz.driver.core.rest.errors.{InvalidActionException, InvalidInputException, ResourceNotFoundException}
import scala.util.control._
import scala.util._
trait Directives {
val paginated: Directive1[Pagination] = parameterSeq.flatMap { params =>
PaginationParser.parse(params) match {
case Success(pagination) => provide(pagination)
case Failure(ex) =>
reject(ValidationRejection("invalid pagination parameter", Some(ex)))
}
}
def sorted(validDimensions: Set[String] = Set.empty): Directive1[Sorting] = parameterSeq.flatMap { params =>
SortingParser.parse(validDimensions, params) match {
case Success(sorting) => provide(sorting)
case Failure(ex) =>
reject(ValidationRejection("invalid sorting parameter", Some(ex)))
}
}
val dimensioned: Directive1[Dimensions] = parameterSeq.flatMap { params =>
DimensionsParser.tryParse(params) match {
case Success(dims) => provide(dims)
case Failure(ex) =>
reject(ValidationRejection("invalid dimension parameter", Some(ex)))
}
}
val searchFiltered: Directive1[SearchFilterExpr] = parameterSeq.flatMap { params =>
SearchFilterParser.parse(params) match {
case Success(sorting) => provide(sorting)
case Failure(ex) =>
reject(ValidationRejection("invalid filter parameter", Some(ex)))
}
}
def StringIdInPath[T]: PathMatcher1[StringId[T]] =
PathMatchers.Segment.map((id) => StringId(id.toString))
def LongIdInPath[T]: PathMatcher1[LongId[T]] =
PathMatchers.LongNumber.map((id) => LongId(id))
def UuidIdInPath[T]: PathMatcher1[UuidId[T]] =
PathMatchers.JavaUUID.map((id) => UuidId(id))
def failFast[A](reply: A): A = reply match {
case err: NotFoundError => throw ResourceNotFoundException(err.getMessage)
case err: AuthorizationError => throw InvalidActionException(err.getMessage)
case err: DomainError => throw InvalidInputException(err.getMessage)
case other => other
}
def domainExceptionHandler(req: String): ExceptionHandler = {
def errorResponse(msg: String, code: Int) =
ErrorsResponse(Seq(ResponseError(None, msg, code)), req)
ExceptionHandler {
case ex: InvalidActionException =>
complete(StatusCodes.Forbidden -> errorResponse(ex.message, 403))
case ex: ResourceNotFoundException =>
complete(StatusCodes.NotFound -> errorResponse(ex.message, 404))
case ex: InvalidInputException =>
complete(StatusCodes.BadRequest -> errorResponse(ex.message, 400))
case NonFatal(ex) =>
complete(StatusCodes.InternalServerError -> errorResponse(ex.getMessage, 500))
}
}
def domainRejectionHandler(req: String): RejectionHandler = {
def wrapContent(message: String) = {
import ErrorsResponse._
val err: ErrorsResponse = ErrorsResponse(Seq(ResponseError(None, message, 1)), req)
val text = errorsResponseJsonFormat.write(err).toString()
HttpEntity(ContentTypes.`application/json`, text)
}
DriverApp.rejectionHandler.mapRejectionResponse {
case res @ HttpResponse(_, _, ent: HttpEntity.Strict, _) =>
res.copy(entity = wrapContent(ent.data.utf8String))
case x => x // pass through all other types of responses
}
}
val tracked: Directive1[String] = optionalHeaderValueByName(ContextHeaders.TrackingIdHeader) flatMap {
case Some(id) => provide(id)
case None => provide(generators.nextUuid().toString)
}
val domainResponse: Directive0 = tracked.flatMap { id =>
handleExceptions(domainExceptionHandler(id)) & handleRejections(domainRejectionHandler(id))
}
}
object Directives extends Directives
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