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package cask.model
import java.io.{InputStream, OutputStream, OutputStreamWriter}
import cask.internal.Util
/**
* The basic response returned by a HTTP endpoint.
*
* Note that [[data]] by default can take in a wide range of types: strings,
* bytes, uPickle JSON-convertable types or arbitrary input streams. You can
* also construct your own implementations of `Response.Data`.
*/
case class Response(
data: Response.Data,
statusCode: Int,
headers: Seq[(String, String)],
cookies: Seq[Cookie]
)
object Response{
def apply(data: Data,
statusCode: Int = 200,
headers: Seq[(String, String)] = Nil,
cookies: Seq[Cookie] = Nil) = new Response(data, statusCode, headers, cookies)
implicit def dataResponse[T](t: T)(implicit c: T => Data) = Response(t)
trait Data{
def write(out: OutputStream): Unit
}
object Data{
implicit class StringData(s: String) extends Data{
def write(out: OutputStream) = out.write(s.getBytes)
}
implicit class BytesData(b: Array[Byte]) extends Data{
def write(out: OutputStream) = out.write(b)
}
implicit class StreamData(b: InputStream) extends Data{
def write(out: OutputStream) = Util.transferTo(b, out)
}
implicit def JsonResponse[T: upickle.default.Writer](t: T) = new Data{
def write(out: OutputStream) = implicitly[upickle.default.Writer[T]].write(
new ujson.BaseRenderer(new OutputStreamWriter(out)),
t
)
}
}
}
object Redirect{
def apply(url: String) = Response("", 301, Seq("Location" -> url), Nil)
}
object Abort{
def apply(code: Int) = Response("", code, Nil, Nil)
}
object StaticFile{
def apply(path: String) = {
val relPath = java.nio.file.Paths.get(path)
val (data0, statusCode0) =
if (java.nio.file.Files.exists(relPath) && java.nio.file.Files.isRegularFile(relPath)){
(java.nio.file.Files.newInputStream(relPath): Response.Data, 200)
}else{
("": Response.Data, 404)
}
Response(data0, statusCode0, Nil, Nil)
}
}
object StaticResource{
def apply(path: String, resourceRoot: ClassLoader) = {
val relPath = java.nio.file.Paths.get(path)
val (data0, statusCode0) = resourceRoot.getResourceAsStream(path) match{
case null => ("": Response.Data, 404)
case res => (res: Response.Data, 200)
}
Response(data0, statusCode0, Nil, Nil)
}
}
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