server | port entire backend fully to Kotlin

server/app/build.gradle

@@ -2,8 +2,6 @@ plugins {
   id 'org.springframework.boot' version "${springBootVersion}"
   id 'io.spring.dependency-management' version "${springDependencyManagementVersion}"
 }
-group = 'ee.rsx.kata.bank'
-version = '1.0.0-SNAPSHOT'
 
 dependencies {
   implementation project(':loans-api')
@@ -13,4 +11,3 @@ dependencies {
   testImplementation 'org.springframework.boot:spring-boot-starter-test'
   testImplementation "com.tngtech.archunit:archunit-junit5:${archUnitVersion}"
 }
-

server/app/src/main/kotlin/ee/rsx/kata/bank/app/Server.kt

@@ -0,0 +1,11 @@
+package ee.rsx.kata.bank.app
+
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.runApplication
+
+@SpringBootApplication(scanBasePackages = ["ee.rsx.kata.bank"])
+open class Server
+
+fun main(vararg args: String) {
+  runApplication<Server>(*args)
+}

server/app/src/main/kotlin/ee/rsx/kata/bank/app/rest/loans/eligibility/LoanEligibilityEndpoint.kt

@@ -0,0 +1,40 @@
+package ee.rsx.kata.bank.app.rest.loans.eligibility
+
+import ee.rsx.kata.bank.loans.eligibility.CalculateLoanEligibility
+import ee.rsx.kata.bank.loans.eligibility.LoanEligibilityRequestDTO
+import ee.rsx.kata.bank.loans.eligibility.LoanEligibilityResultDTO
+import ee.rsx.kata.bank.loans.eligibility.LoanEligibilityStatus.APPROVED
+import ee.rsx.kata.bank.loans.eligibility.LoanEligibilityStatus.DENIED
+import ee.rsx.kata.bank.loans.eligibility.LoanEligibilityStatus.INVALID
+import org.springframework.http.HttpStatus.BAD_REQUEST
+import org.springframework.http.HttpStatus.NOT_ACCEPTABLE
+import org.springframework.http.HttpStatus.OK
+import org.springframework.http.MediaType.APPLICATION_JSON
+import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@RequestMapping("/loans/eligibility")
+class LoanEligibilityEndpoint(
+  private val calculateEligibility: CalculateLoanEligibility
+) {
+
+  @PostMapping
+  fun calculateLoanEligibility(
+    @RequestBody request: LoanEligibilityRequestDTO
+  ): ResponseEntity<LoanEligibilityResultDTO> =
+    with(calculateEligibility(request)) {
+      val httpStatus = when (result) {
+        APPROVED -> OK
+        INVALID -> BAD_REQUEST
+        DENIED -> NOT_ACCEPTABLE
+      }
+
+      ResponseEntity.status(httpStatus)
+        .contentType(APPLICATION_JSON)
+        .body(this)
+    }
+}

server/app/src/main/kotlin/ee/rsx/kata/bank/app/rest/loans/validation/ValidationEndpoints.kt

@@ -0,0 +1,22 @@
+package ee.rsx.kata.bank.app.rest.loans.validation
+
+import ee.rsx.kata.bank.loans.validation.limits.LoadValidationLimits
+import ee.rsx.kata.bank.loans.validation.ssn.ValidateSocialSecurityNumber
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RequestParam
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@RequestMapping("/loans/validation")
+class ValidationEndpoints(
+  private val loadLimits: LoadValidationLimits,
+  private val validateSocialSecurityNumber: ValidateSocialSecurityNumber
+) {
+
+  @GetMapping(value = ["/limits"])
+  fun loadValidationLimits() = loadLimits()
+
+  @GetMapping(value = ["/ssn"])
+  fun validateSsn(@RequestParam("value") value: String) = validateSocialSecurityNumber(value)
+}