Initial commit

api/src/lu/foyer/App.scala

@@ -0,0 +1,71 @@
+package lu.foyer
+
+import lu.foyer.clients.ClientState
+
+import zio.*
+import zio.Console.*
+import zio.http.*
+import zio.schema.*
+import zio.http.endpoint.*
+import zio.http.codec.*
+import java.net.URI
+import zio.http.endpoint.openapi.OpenAPIGen
+import zio.http.endpoint.openapi.SwaggerUI
+import zio.http.codec.PathCodec.path
+
+case class JsonApiResponseSingle[T](
+  data: JsonApiResponseEntity[T],
+  links: JsonApiResponseLinks)
+    derives Schema
+
+case class JsonApiResponseMultiple[T](
+  data: List[JsonApiResponseEntity[T]],
+  links: JsonApiResponseLinks,
+  meta: JsonApiResponseMeta)
+    derives Schema
+
+case class JsonApiResponseLinks(
+  self: String,
+  first: Option[String] = None,
+  prev: Option[String] = None,
+  next: Option[String] = None,
+  last: Option[String] = None)
+    derives Schema
+
+case class JsonApiResponseMeta(totalRecords: Int, totalPages: Int) derives Schema
+
+final case class JsonApiResponseEntity[T](id: String, `type`: String, attributes: T) derives Schema
+
+case class Page(number: Int, size: Int, totals: Boolean)
+
+val pageParams =
+  (HttpCodec.query[Option[Int]]("page[number]")
+    & HttpCodec.query[Option[Int]]("page[size]")
+    & HttpCodec.query[Option[Boolean]]("page[totals]"))
+    .transform[Page]((number, size, totals) =>
+      Page(number.getOrElse(0), size.getOrElse(50), totals.getOrElse(false))
+    )(p => (Some(p._1), Some(p._2), Some(p._3)))
+
+object ClientsController:
+  private val fetchMany =
+    Endpoint(Method.GET / "clients").query(pageParams).out[JsonApiResponseMultiple[ClientState]]
+
+  private val fetchManyRoute =
+    fetchMany.implement(page =>
+      ZIO.succeed(
+        JsonApiResponseMultiple[ClientState](
+          List.empty,
+          JsonApiResponseLinks("https://api.example.org"),
+          meta = JsonApiResponseMeta(0, 1)
+        )
+      )
+    )
+
+  val endpoints = List(fetchMany)
+  val routes    = Routes(fetchManyRoute)
+
+object App extends ZIOAppDefault:
+  val openAPI = OpenAPIGen.fromEndpoints(ClientsController.endpoints)
+  val routes  = ClientsController.routes ++ SwaggerUI.routes("docs" / "openapi", openAPI)
+
+  override def run = Server.serve(routes).provide(Server.default)