add IdentityController

src/main/kotlin/ltd/hlaeja/controller/IdentityController.kt

@@ -0,0 +1,22 @@
+package ltd.hlaeja.controller
+
+import java.util.UUID
+import ltd.hlaeja.library.deviceRegistry.Identity
+import ltd.hlaeja.service.NodeService
+import ltd.hlaeja.util.toIdentityResponse
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@RequestMapping("/identity")
+class IdentityController(
+    private val nodeService: NodeService,
+) {
+
+    @GetMapping("/device-{device}")
+    suspend fun getIdentityFromDevice(
+        @PathVariable device: UUID,
+    ): Identity.Response = nodeService.getNodeFromDevice(device).toIdentityResponse()
+}

src/test/kotlin/ltd/hlaeja/controller/IdentityControllerTest.kt

@@ -0,0 +1,55 @@
+package ltd.hlaeja.controller
+
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.mockk
+import java.time.LocalDateTime
+import java.time.ZoneId
+import java.time.ZonedDateTime
+import java.util.UUID
+import kotlinx.coroutines.test.runTest
+import ltd.hlaeja.assertj.assertThat
+import ltd.hlaeja.entity.NodeEntity
+import ltd.hlaeja.service.NodeService
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+
+class IdentityControllerTest {
+    companion object {
+        val timestamp: ZonedDateTime = ZonedDateTime.of(LocalDateTime.of(2000, 1, 1, 0, 0, 0, 1), ZoneId.of("UTC"))
+    }
+
+    val service: NodeService = mockk()
+
+    lateinit var controller: IdentityController
+
+    @BeforeEach
+    fun setUp() {
+        controller = IdentityController(service)
+    }
+
+    @Test
+    fun `get node by device - success`() = runTest {
+        // given
+        val device = UUID.fromString("00000000-0000-0000-0000-000000000003")
+        val entity = NodeEntity(
+            UUID.fromString("00000000-0000-0000-0000-000000000001"),
+            timestamp,
+            UUID.fromString("00000000-0000-0000-0000-000000000002"),
+            device,
+            "test",
+        )
+
+        coEvery { service.getNodeFromDevice(any()) } returns entity
+
+        // when
+        val response = controller.getIdentityFromDevice(device)
+
+        // then
+        coVerify(exactly = 1) { service.getNodeFromDevice(any()) }
+
+        assertThat(response.node).isUUID("00000000-0000-0000-0000-000000000001")
+        assertThat(response.client).isUUID("00000000-0000-0000-0000-000000000002")
+        assertThat(response.device).isUUID("00000000-0000-0000-0000-000000000003")
+    }
+}