Enable automatic Kotlin Nullability in Swagger

build.gradle.kts

@@ -25,6 +25,7 @@ dependencies {
     implementation("org.springframework.boot:spring-boot-starter-actuator")
     implementation("org.springframework.boot:spring-boot-starter-validation")
     implementation("org.springdoc:springdoc-openapi-starter-webmvc-ui:3.0.0")
+    implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
 
     // data
     implementation("org.springframework.boot:spring-boot-starter-data-jpa")

src/main/kotlin/com/moa/service/dto/HomeResponse.kt

@@ -2,20 +2,16 @@ package com.moa.service.dto
 
 import com.fasterxml.jackson.annotation.JsonFormat
 import com.moa.entity.DailyWorkScheduleType
-import io.swagger.v3.oas.annotations.media.Schema
 import java.time.LocalTime
 
 data class HomeResponse(
-    @field:Schema(nullable = true)
     val workplace: String?,
     val workedEarnings: Int,
     val standardSalary: Int,
     val dailyPay: Int,
     val type: DailyWorkScheduleType,
-    @field:Schema(nullable = true)
     @field:JsonFormat(pattern = "HH:mm")
     val clockInTime: LocalTime?,
-    @field:Schema(nullable = true)
     @field:JsonFormat(pattern = "HH:mm")
     val clockOutTime: LocalTime?,
 )

src/main/kotlin/com/moa/service/dto/OnboardingStatusResponse.kt

@@ -1,13 +1,8 @@
 package com.moa.service.dto
 
-import io.swagger.v3.oas.annotations.media.Schema
-
 data class OnboardingStatusResponse(
-    @field:Schema(nullable = true)
     val profile: ProfileResponse?,
-    @field:Schema(nullable = true)
     val payroll: PayrollResponse?,
-    @field:Schema(nullable = true)
     val workPolicy: WorkPolicyResponse?,
     val hasRequiredTermsAgreed: Boolean,
 )

src/main/kotlin/com/moa/service/dto/PaydayUpdateRequest.kt

@@ -1,8 +1,5 @@
 package com.moa.service.dto
 
-import jakarta.validation.constraints.Max
-import jakarta.validation.constraints.Min
-
 data class PaydayUpdateRequest(
     val paydayDay: Int,
 )

src/main/kotlin/com/moa/service/dto/WorkPolicyUpsertRequest.kt

@@ -7,7 +7,6 @@ import java.time.LocalTime
 data class WorkPolicyUpsertRequest(
     @field:NotEmpty
     val workdays: Set<Workday>,
-
     val clockInTime: LocalTime,
     val clockOutTime: LocalTime,
 )

src/main/kotlin/com/moa/service/dto/WorkdayResponse.kt

@@ -2,18 +2,15 @@ package com.moa.service.dto
 
 import com.fasterxml.jackson.annotation.JsonFormat
 import com.moa.entity.DailyWorkScheduleType
-import io.swagger.v3.oas.annotations.media.Schema
 import java.time.LocalDate
 import java.time.LocalTime
 
 data class WorkdayResponse(
     val date: LocalDate,
     val type: DailyWorkScheduleType,
     val dailyPay: Int,
-    @field:Schema(nullable = true)
     @field:JsonFormat(pattern = "HH:mm")
     val clockInTime: LocalTime? = null,
-    @field:Schema(nullable = true)
     @field:JsonFormat(pattern = "HH:mm")
     val clockOutTime: LocalTime? = null,
 )