create pd (#249)

bound/kt/src/main/kotlin/web5/sdk/vc/pex/PresentationDefinition.kt

@@ -0,0 +1,49 @@
+package web5.sdk.vc.pex
+
+import web5.sdk.rust.ConstraintsData as RustCoreConstraintsData
+import web5.sdk.rust.FieldData as RustCoreFieldData
+import web5.sdk.rust.FilterData as RustCoreFilterData
+import web5.sdk.rust.Optionality as RustCoreOptionality
+import web5.sdk.rust.InputDescriptorData as RustCoreInputDescriptorData
+
+import web5.sdk.rust.PresentationDefinition as RustCorePresentationDefinition
+import web5.sdk.rust.PresentationDefinitionData as RustCorePresentationDefinitionData
+
+typealias ConstraintsData = RustCoreConstraintsData
+typealias FieldData = RustCoreFieldData
+typealias FilterData = RustCoreFilterData
+typealias Optionality = RustCoreOptionality
+typealias InputDescriptor = RustCoreInputDescriptorData
+
+class PresentationDefinition {
+    val id: String
+    val name: String?
+    val purpose: String?
+    val inputDescriptors: List<InputDescriptor>
+
+    internal val rustCorePresentationDefinition: RustCorePresentationDefinition
+
+    constructor(id: String, name: String? = null, purpose: String? = null, inputDescriptors: List<InputDescriptor>) {
+        this.id = id
+        this.name = name
+        this.purpose = purpose
+        this.inputDescriptors = inputDescriptors
+
+        this.rustCorePresentationDefinition = RustCorePresentationDefinition(
+            RustCorePresentationDefinitionData(id, name, purpose, inputDescriptors)
+        )
+    }
+
+    constructor(rustCorePresentationDefinitionData: RustCorePresentationDefinitionData) {
+        this.id = rustCorePresentationDefinitionData.id
+        this.name = rustCorePresentationDefinitionData.name
+        this.purpose = rustCorePresentationDefinitionData.purpose
+        this.inputDescriptors = rustCorePresentationDefinitionData.inputDescriptors
+
+        this.rustCorePresentationDefinition = RustCorePresentationDefinition(rustCorePresentationDefinitionData)
+    }
+
+    fun selectCredentials(vcJwts: List<String>): List<String> {
+        return this.rustCorePresentationDefinition.selectCredentials(vcJwts)
+    }
+}

bound/kt/src/test/kotlin/web5/sdk/vcs/pex/PresentationDefinitionTest.kt

@@ -0,0 +1,68 @@
+package web5.sdk.vcs.pex
+
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertNotNull
+import org.junit.jupiter.api.Assertions.assertNull
+import org.junit.jupiter.api.Test
+import web5.sdk.vc.pex.*
+
+class PresentationDefinitionTest {
+
+  @Test
+  fun `test basic presentation definition`() {
+    val inputDescriptor = InputDescriptor(
+      id = "test_input",
+      name = "Test Input",
+      purpose = "For testing",
+      constraints = ConstraintsData(
+        fields = listOf(
+          FieldData(
+            id = "field1",
+            name = "Field 1",
+            path = listOf("$.field1"),
+            purpose = "Test field",
+            filter = FilterData(
+              type = "string",
+              pattern = "^[a-zA-Z]+$",
+              constValue = null
+            ),
+            optional = false,
+            predicate = Optionality.REQUIRED
+          )
+        )
+      )
+    )
+
+    val presentationDefinition = PresentationDefinition(
+      id = "test_presentation",
+      name = "Test Presentation",
+      purpose = "For testing purposes",
+      inputDescriptors = listOf(inputDescriptor)
+    )
+
+    assertEquals("test_presentation", presentationDefinition.id)
+    assertEquals("Test Presentation", presentationDefinition.name)
+    assertEquals("For testing purposes", presentationDefinition.purpose)
+    assertEquals(1, presentationDefinition.inputDescriptors.size)
+
+    val firstInputDescriptor = presentationDefinition.inputDescriptors[0]
+    assertEquals("test_input", firstInputDescriptor.id)
+    assertEquals("Test Input", firstInputDescriptor.name)
+    assertEquals("For testing", firstInputDescriptor.purpose)
+
+    val field = firstInputDescriptor.constraints.fields[0]
+    assertEquals("field1", field.id)
+    assertEquals("Field 1", field.name)
+    assertEquals(listOf("$.field1"), field.path)
+    assertEquals("Test field", field.purpose)
+    assertFalse(field.optional ?: true)
+    assertEquals(Optionality.REQUIRED, field.predicate)
+
+    val filter = field.filter
+    assertNotNull(filter)
+    assertEquals("string", filter?.type)
+    assertEquals("^[a-zA-Z]+$", filter?.pattern)
+    assertNull(filter?.constValue)
+  }
+}