feature: add support for object input default values and add support for default inputs to kotlin2

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/constantsForInputTypes/expected/types/PersonFilter.kt

@@ -10,7 +10,7 @@ import kotlin.collections.List
 
 public class PersonFilter @JsonCreator constructor(
   @JsonProperty("email")
-  public val email: String? = default<PersonFilter, String?>("email"),
+  public val email: String? = default<PersonFilter, String?>("email", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("email" to email)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/constantsWithExtendedInputTypes/expected/types/PersonFilter.kt

@@ -11,9 +11,9 @@ import kotlin.collections.List
 
 public class PersonFilter @JsonCreator constructor(
   @JsonProperty("email")
-  public val email: String? = default<PersonFilter, String?>("email"),
+  public val email: String? = default<PersonFilter, String?>("email", null),
   @JsonProperty("birthYear")
-  public val birthYear: Int? = default<PersonFilter, Int?>("birthYear"),
+  public val birthYear: Int? = default<PersonFilter, Int?>("birthYear", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("email" to email, "birthYear" to
       birthYear)

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/dataClassDocs/expected/types/MovieFilter.kt

@@ -15,7 +15,7 @@ import kotlin.collections.List
  */
 public class MovieFilter @JsonCreator constructor(
   @JsonProperty("titleFilter")
-  public val titleFilter: String? = default<MovieFilter, String?>("titleFilter"),
+  public val titleFilter: String? = default<MovieFilter, String?>("titleFilter", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("titleFilter" to titleFilter)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/dataClassFieldDocs/expected/types/MovieFilter.kt

@@ -10,7 +10,7 @@ import kotlin.collections.List
 
 public class MovieFilter @JsonCreator constructor(
   @JsonProperty("titleFilter")
-  public val titleFilter: String? = default<MovieFilter, String?>("titleFilter"),
+  public val titleFilter: String? = default<MovieFilter, String?>("titleFilter", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("titleFilter" to titleFilter)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/input/expected/types/MovieFilter.kt

@@ -10,7 +10,7 @@ import kotlin.collections.List
 
 public class MovieFilter @JsonCreator constructor(
   @JsonProperty("genre")
-  public val genre: String? = default<MovieFilter, String?>("genre"),
+  public val genre: String? = default<MovieFilter, String?>("genre", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("genre" to genre)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultEnumValueForArray/expected/types/SomeType.kt

@@ -10,7 +10,8 @@ import kotlin.collections.List
 
 public class SomeType @JsonCreator constructor(
   @JsonProperty("colors")
-  public val colors: List<Color?>? = default<SomeType, List<Color?>?>("colors"),
+  public val colors: List<Color?>? = default<SomeType, List<Color?>?>("colors",
+      listOf(com.netflix.graphql.dgs.codegen.cases.inputWithDefaultEnumValueForArray.expected.types.Color.red)),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("colors" to colors)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultIntValueForArray/expected/types/SomeType.kt

@@ -11,7 +11,7 @@ import kotlin.collections.List
 
 public class SomeType @JsonCreator constructor(
   @JsonProperty("numbers")
-  public val numbers: List<Int?>? = default<SomeType, List<Int?>?>("numbers"),
+  public val numbers: List<Int?>? = default<SomeType, List<Int?>?>("numbers", listOf(1, 2, 3)),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("numbers" to numbers)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultStringValueForArray/expected/types/SomeType.kt

@@ -10,7 +10,7 @@ import kotlin.collections.List
 
 public class SomeType @JsonCreator constructor(
   @JsonProperty("names")
-  public val names: List<String?>? = default<SomeType, List<String?>?>("names"),
+  public val names: List<String?>? = default<SomeType, List<String?>?>("names", listOf("A", "B")),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("names" to names)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForArray/expected/types/SomeType.kt

@@ -10,7 +10,7 @@ import kotlin.collections.List
 
 public class SomeType @JsonCreator constructor(
   @JsonProperty("names")
-  public val names: List<String?>? = default<SomeType, List<String?>?>("names"),
+  public val names: List<String?>? = default<SomeType, List<String?>?>("names", emptyList()),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("names" to names)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForEnum/expected/types/ColorFilter.kt

@@ -10,7 +10,8 @@ import kotlin.collections.List
 
 public class ColorFilter @JsonCreator constructor(
   @JsonProperty("color")
-  public val color: Color? = default<ColorFilter, Color?>("color"),
+  public val color: Color? = default<ColorFilter, Color?>("color",
+      com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForEnum.expected.types.Color.red),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("color" to color)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForNonNullableFields/expected/DgsClient.kt

@@ -0,0 +1,3 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForNonNullableFields.expected
+
+public object DgsClient

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForNonNullableFields/expected/DgsConstants.kt

@@ -0,0 +1,25 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForNonNullableFields.expected
+
+import kotlin.String
+
+public object DgsConstants {
+  public object PERSON {
+    public const val TYPE_NAME: String = "Person"
+
+    public const val Name: String = "name"
+
+    public const val Age: String = "age"
+
+    public const val Car: String = "car"
+
+    public const val Hobbies: String = "hobbies"
+
+    public const val IsHappy: String = "isHappy"
+  }
+
+  public object CAR {
+    public const val TYPE_NAME: String = "Car"
+
+    public const val Brand: String = "brand"
+  }
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForNonNullableFields/expected/types/Car.kt

@@ -0,0 +1,16 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForNonNullableFields.expected.types
+
+import com.fasterxml.jackson.`annotation`.JsonCreator
+import com.fasterxml.jackson.`annotation`.JsonProperty
+import com.netflix.graphql.dgs.codegen.GraphQLInput
+import kotlin.Any
+import kotlin.Pair
+import kotlin.String
+import kotlin.collections.List
+
+public class Car @JsonCreator constructor(
+  @JsonProperty("brand")
+  public val brand: String = default<Car, String>("brand", "BMW"),
+) : GraphQLInput() {
+  override fun fields(): List<Pair<String, Any?>> = listOf("brand" to brand)
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForNonNullableFields/expected/types/Hobby.kt

@@ -0,0 +1,9 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForNonNullableFields.expected.types
+
+public enum class Hobby {
+  Football,
+  Hokey,
+  ;
+
+  public companion object
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForNonNullableFields/expected/types/Person.kt

@@ -0,0 +1,30 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForNonNullableFields.expected.types
+
+import com.fasterxml.jackson.`annotation`.JsonCreator
+import com.fasterxml.jackson.`annotation`.JsonProperty
+import com.netflix.graphql.dgs.codegen.GraphQLInput
+import kotlin.Any
+import kotlin.Boolean
+import kotlin.Int
+import kotlin.Pair
+import kotlin.String
+import kotlin.collections.List
+
+public class Person @JsonCreator constructor(
+  @JsonProperty("name")
+  public val name: String = default<Person, String>("name", "Damian"),
+  @JsonProperty("age")
+  public val age: Int = default<Person, Int>("age", 18),
+  @JsonProperty("car")
+  public val car: Car = default<Person, Car>("car",
+      com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForNonNullableFields.expected.types.Car(brand
+      = "Ford")),
+  @JsonProperty("hobbies")
+  public val hobbies: List<Hobby> = default<Person, List<Hobby>>("hobbies",
+      listOf(com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForNonNullableFields.expected.types.Hobby.Hokey)),
+  @JsonProperty("isHappy")
+  public val isHappy: Boolean = default<Person, Boolean>("isHappy", true),
+) : GraphQLInput() {
+  override fun fields(): List<Pair<String, Any?>> = listOf("name" to name, "age" to age, "car" to
+      car, "hobbies" to hobbies, "isHappy" to isHappy)
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForNonNullableFields/schema.graphql

@@ -0,0 +1,16 @@
+input Person {
+    name: String! = "Damian"
+    age: Int! = 18
+    car: Car! = { brand: "Ford" }
+    hobbies: [Hobby!]! = [Hokey]
+    isHappy: Boolean! = true
+}
+
+enum Hobby {
+    Football
+    Hokey
+}
+
+input Car {
+    brand: String! = "BMW"
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForObject/expected/DgsClient.kt

@@ -0,0 +1,3 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForObject.expected
+
+public object DgsClient

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForObject/expected/DgsConstants.kt

@@ -0,0 +1,27 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForObject.expected
+
+import kotlin.String
+
+public object DgsConstants {
+  public object PERSON {
+    public const val TYPE_NAME: String = "Person"
+
+    public const val Name: String = "name"
+
+    public const val Age: String = "age"
+
+    public const val Car: String = "car"
+  }
+
+  public object CAR {
+    public const val TYPE_NAME: String = "Car"
+
+    public const val Brand: String = "brand"
+  }
+
+  public object MOVIEFILTER {
+    public const val TYPE_NAME: String = "MovieFilter"
+
+    public const val Director: String = "director"
+  }
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForObject/expected/types/Car.kt

@@ -0,0 +1,16 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForObject.expected.types
+
+import com.fasterxml.jackson.`annotation`.JsonCreator
+import com.fasterxml.jackson.`annotation`.JsonProperty
+import com.netflix.graphql.dgs.codegen.GraphQLInput
+import kotlin.Any
+import kotlin.Pair
+import kotlin.String
+import kotlin.collections.List
+
+public class Car @JsonCreator constructor(
+  @JsonProperty("brand")
+  public val brand: String = default<Car, String>("brand", "BMW"),
+) : GraphQLInput() {
+  override fun fields(): List<Pair<String, Any?>> = listOf("brand" to brand)
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForObject/expected/types/MovieFilter.kt

@@ -0,0 +1,20 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForObject.expected.types
+
+import com.fasterxml.jackson.`annotation`.JsonCreator
+import com.fasterxml.jackson.`annotation`.JsonProperty
+import com.netflix.graphql.dgs.codegen.GraphQLInput
+import kotlin.Any
+import kotlin.Pair
+import kotlin.String
+import kotlin.collections.List
+
+public class MovieFilter @JsonCreator constructor(
+  @JsonProperty("director")
+  public val director: Person? = default<MovieFilter, Person?>("director",
+      com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForObject.expected.types.Person(name
+      = "Damian", car =
+      com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForObject.expected.types.Car(brand
+      = "Tesla"))),
+) : GraphQLInput() {
+  override fun fields(): List<Pair<String, Any?>> = listOf("director" to director)
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForObject/expected/types/Person.kt

@@ -0,0 +1,24 @@
+package com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForObject.expected.types
+
+import com.fasterxml.jackson.`annotation`.JsonCreator
+import com.fasterxml.jackson.`annotation`.JsonProperty
+import com.netflix.graphql.dgs.codegen.GraphQLInput
+import kotlin.Any
+import kotlin.Int
+import kotlin.Pair
+import kotlin.String
+import kotlin.collections.List
+
+public class Person @JsonCreator constructor(
+  @JsonProperty("name")
+  public val name: String? = default<Person, String?>("name", "John"),
+  @JsonProperty("age")
+  public val age: Int? = default<Person, Int?>("age", 23),
+  @JsonProperty("car")
+  public val car: Car? = default<Person, Car?>("car",
+      com.netflix.graphql.dgs.codegen.cases.inputWithDefaultValueForObject.expected.types.Car(brand
+      = "Ford")),
+) : GraphQLInput() {
+  override fun fields(): List<Pair<String, Any?>> = listOf("name" to name, "age" to age, "car" to
+      car)
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithDefaultValueForObject/schema.graphql

@@ -0,0 +1,13 @@
+input Person {
+    name: String = "John"
+    age: Int = 23
+    car: Car = { brand: "Ford" }
+}
+
+input Car {
+    brand: String! = "BMW"
+}
+
+input MovieFilter {
+    director: Person = { name: "Damian", car: { brand: "Tesla" } }
+}

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/inputWithExtendedType/expected/types/MovieFilter.kt

@@ -11,9 +11,9 @@ import kotlin.collections.List
 
 public class MovieFilter @JsonCreator constructor(
   @JsonProperty("genre")
-  public val genre: String? = default<MovieFilter, String?>("genre"),
+  public val genre: String? = default<MovieFilter, String?>("genre", null),
   @JsonProperty("releaseYear")
-  public val releaseYear: Int? = default<MovieFilter, Int?>("releaseYear"),
+  public val releaseYear: Int? = default<MovieFilter, Int?>("releaseYear", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("genre" to genre, "releaseYear" to
       releaseYear)

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/projectionWithNestedInputs/expected/types/I1.kt

@@ -10,9 +10,9 @@ import kotlin.collections.List
 
 public class I1 @JsonCreator constructor(
   @JsonProperty("arg1")
-  public val arg1: I1? = default<I1, I1?>("arg1"),
+  public val arg1: I1? = default<I1, I1?>("arg1", null),
   @JsonProperty("arg2")
-  public val arg2: I2? = default<I1, I2?>("arg2"),
+  public val arg2: I2? = default<I1, I2?>("arg2", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("arg1" to arg1, "arg2" to arg2)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/projectionWithNestedInputs/expected/types/I2.kt

@@ -10,9 +10,9 @@ import kotlin.collections.List
 
 public class I2 @JsonCreator constructor(
   @JsonProperty("arg1")
-  public val arg1: String? = default<I2, String?>("arg1"),
+  public val arg1: String? = default<I2, String?>("arg1", null),
   @JsonProperty("arg2")
-  public val arg2: String? = default<I2, String?>("arg2"),
+  public val arg2: String? = default<I2, String?>("arg2", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("arg1" to arg1, "arg2" to arg2)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/projectionWithPrimitiveAndArgs/expected/types/I.kt

@@ -10,7 +10,7 @@ import kotlin.collections.List
 
 public class I @JsonCreator constructor(
   @JsonProperty("arg")
-  public val arg: String? = default<I, String?>("arg"),
+  public val arg: String? = default<I, String?>("arg", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("arg" to arg)
 }

graphql-dgs-codegen-core/src/integTest/kotlin/com/netflix/graphql/dgs/codegen/cases/projectionWithTypeAndArgs/expected/types/I.kt

@@ -10,7 +10,7 @@ import kotlin.collections.List
 
 public class I @JsonCreator constructor(
   @JsonProperty("arg")
-  public val arg: String? = default<I, String?>("arg"),
+  public val arg: String? = default<I, String?>("arg", null),
 ) : GraphQLInput() {
   override fun fields(): List<Pair<String, Any?>> = listOf("arg" to arg)
 }

graphql-dgs-codegen-core/src/main/kotlin/com/netflix/graphql/dgs/codegen/CodeGen.kt

@@ -299,14 +299,15 @@ class CodeGen(private val config: CodeGenConfig) {
     }
 
     private fun generateJavaInputType(definitions: Collection<Definition<*>>): CodeGenResult {
-        val inputTypes = definitions.asSequence()
+        val inputTypeDefinitions = definitions
             .filterIsInstance<InputObjectTypeDefinition>()
+        val inputTypes = inputTypeDefinitions.asSequence()
             .excludeSchemaTypeExtension()
             .filter { config.generateDataTypes || it.name in requiredTypeCollector.requiredTypes }
 
         return inputTypes
             .map { d ->
-                InputTypeGenerator(config, document).generate(d, findInputExtensions(d.name, definitions))
+                InputTypeGenerator(config, document).generate(d, findInputExtensions(d.name, definitions), inputTypeDefinitions)
             }.fold(CodeGenResult()) { t: CodeGenResult, u: CodeGenResult -> t.merge(u) }
     }
 
@@ -411,12 +412,13 @@ class CodeGen(private val config: CodeGenConfig) {
     }
 
     private fun generateKotlinInputTypes(definitions: Collection<Definition<*>>): CodeGenResult {
-        return definitions.asSequence()
+        val inputTypeDefinitions = definitions
             .filterIsInstance<InputObjectTypeDefinition>()
+        return inputTypeDefinitions.asSequence()
             .excludeSchemaTypeExtension()
             .filter { config.generateDataTypes || it.name in requiredTypeCollector.requiredTypes }
             .map {
-                KotlinInputTypeGenerator(config, document).generate(it, findInputExtensions(it.name, definitions))
+                KotlinInputTypeGenerator(config, document).generate(it, findInputExtensions(it.name, definitions), inputTypeDefinitions)
             }
             .fold(CodeGenResult()) { t: CodeGenResult, u: CodeGenResult -> t.merge(u) }
     }