server: Add GET /stats endpoint

server/app/com/xsn/explorer/services/StatisticsService.scala

@@ -0,0 +1,13 @@
+package com.xsn.explorer.services
+
+import javax.inject.Inject
+
+import com.alexitc.playsonify.core.FutureApplicationResult
+import com.xsn.explorer.models.rpc.ServerStatistics
+
+class StatisticsService @Inject() (xsnService: XSNService) {
+
+  def getServerStatistics(): FutureApplicationResult[ServerStatistics] = {
+    xsnService.getServerStatistics()
+  }
+}

server/app/controllers/StatisticsController.scala

@@ -0,0 +1,16 @@
+package controllers
+
+import javax.inject.Inject
+
+import com.xsn.explorer.services.StatisticsService
+import controllers.common.{MyJsonController, MyJsonControllerComponents}
+
+class StatisticsController @Inject() (
+    statisticsService: StatisticsService,
+    cc: MyJsonControllerComponents)
+    extends MyJsonController(cc) {
+
+  def getStatus() = publicNoInput { _ =>
+    statisticsService.getServerStatistics()
+  }
+}

server/conf/routes

@@ -9,3 +9,5 @@ GET   /addresses/:address    controllers.AddressesController.getDetails(address:
 
 GET   /blocks                controllers.BlocksController.getLatestBlocks()
 GET   /blocks/:blockhash     controllers.BlocksController.getDetails(blockhash: String)
+
+GET   /stats                 controllers.StatisticsController.getStatus()

server/test/controllers/StatisticsControllerSpec.scala

@@ -0,0 +1,41 @@
+package controllers
+
+import com.alexitc.playsonify.core.FutureApplicationResult
+import com.xsn.explorer.helpers.DummyXSNService
+import com.xsn.explorer.models.Height
+import com.xsn.explorer.models.rpc.ServerStatistics
+import com.xsn.explorer.services.XSNService
+import controllers.common.MyAPISpec
+import org.scalactic.Good
+import play.api.inject.bind
+import play.api.test.Helpers._
+
+import scala.concurrent.Future
+
+class StatisticsControllerSpec extends MyAPISpec {
+
+  val stats = ServerStatistics(Height(45454), 93548, BigDecimal("77645419.93177629"))
+
+  val customXSNService = new DummyXSNService {
+    override def getServerStatistics(): FutureApplicationResult[ServerStatistics] = {
+      val result = Good(stats)
+      Future.successful(result)
+    }
+  }
+
+  override val application = guiceApplicationBuilder
+      .overrides(bind[XSNService].to(customXSNService))
+      .build()
+
+  "GET /stats" should {
+    "return the server statistics" in {
+      val response = GET("/stats")
+
+      status(response) mustEqual OK
+      val json = contentAsJson(response)
+      (json \ "height").as[Int] mustEqual stats.height.int
+      (json \ "transactions").as[Int] mustEqual stats.transactions
+      (json \ "totalSupply").as[BigDecimal] mustEqual stats.totalSupply
+    }
+  }
+}