server: Add the PaginatedResult model

server/app/com/xsn/explorer/models/base/Count.scala

@@ -0,0 +1,10 @@
+package com.xsn.explorer.models.base
+
+import play.api.libs.json.{JsNumber, Writes}
+
+case class Count(int: Int) extends AnyVal
+
+object Count {
+
+  implicit val writes: Writes[Count] = Writes[Count] { count => JsNumber(count.int) }
+}

server/app/com/xsn/explorer/models/base/PaginatedResult.scala

@@ -0,0 +1,15 @@
+package com.xsn.explorer.models.base
+
+import play.api.libs.json.{Json, OWrites, Writes}
+
+case class PaginatedResult[T](offset: Offset, limit: Limit, total: Count, data: List[T])
+object PaginatedResult {
+  implicit def writes[T](implicit writesT: Writes[T]): Writes[PaginatedResult[T]] = OWrites[PaginatedResult[T]] { result =>
+    Json.obj(
+      "offset" -> result.offset,
+      "limit" -> result.limit,
+      "total" -> result.total,
+      "data" -> result.data
+    )
+  }
+}