feat: new sdk core

.editorconfig

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+
+# Configuration file for EditorConfig: http://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# space indentation for JSON and YML
+[*.{json,json5,yml,yaml}]
+indent_size = 2
+
+[*.kt]
+ktlint_standard_enum-entry-name-case = disabled

.gitignore

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+.gradle
+.idea
+
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Kotlin ###
+.kotlin
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

LICENSE-HEADER.txt

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+Copyright (C) 2025 Expedia, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

build.gradle.kts

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+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.plugin.KotlinBasePluginWrapper
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+import java.time.Duration
+
+plugins {
+    id("java")
+    id("org.jetbrains.kotlin.jvm") version "2.1.10"
+    id("org.jlleitschuh.gradle.ktlint") version "12.1.2"
+    id("io.github.gradle-nexus.publish-plugin") version "2.0.0"
+}
+
+group = project.property("GROUP_ID") as String
+
+apply("$rootDir/gradle-tasks/specs.gradle.kts")
+apply("$rootDir/gradle-tasks/snapshot.gradle")
+
+allprojects {
+    repositories {
+        mavenCentral()
+        maven {
+            url = uri("https://oss.sonatype.org/content/repositories/snapshots/")
+        }
+    }
+}
+
+subprojects {
+    apply(plugin = "java")
+    apply(plugin = "org.jetbrains.kotlin.jvm")
+    apply(plugin = "org.jlleitschuh.gradle.ktlint")
+
+    plugins.withId("org.jetbrains.kotlin.jvm") {
+        kotlin {
+            jvmToolchain(8)
+        }
+    }
+
+    plugins.withType<KotlinBasePluginWrapper>().configureEach {
+        tasks.withType<KotlinCompile>().configureEach {
+            compilerOptions {
+                jvmTarget.set(JvmTarget.JVM_1_8)
+            }
+        }
+    }
+
+    java {
+        withSourcesJar()
+        withJavadocJar()
+
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+
+        // Gradle 7+ Java toolchain approach (also sets 1.8)
+        toolchain {
+            languageVersion.set(JavaLanguageVersion.of(8))
+        }
+    }
+
+    ktlint {
+        debug.set(true)
+        version.set("1.5.0")
+        verbose.set(true)
+
+        additionalEditorconfig.set(
+            mapOf(
+                "max_line_length" to "200",
+                "indent_style" to "space",
+                "indent_size" to "4",
+                "insert_final_newline" to "true",
+                "end_of_line" to "lf",
+            ),
+        )
+    }
+}
+
+nexusPublishing {
+    repositories {
+        sonatype {
+            username.set(System.getenv("SONATYPE_USERNAME"))
+            password.set(System.getenv("SONATYPE_PASSWORD"))
+        }
+    }
+
+    transitionCheckOptions {
+        maxRetries.set(60)
+        delayBetween.set(Duration.ofMillis(5000))
+    }
+}

buildSrc/build.gradle.kts

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+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    api("org.openapitools:openapi-generator:7.11.0")
+    implementation("com.samskivert:jmustache:1.15")
+}

buildSrc/src/main/kotlin/com/expediagroup/sdk/xap/generator/mustache/AllowedMediaTypesLambda.kt

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+package com.expediagroup.sdk.xap.generator.mustache
+
+import com.samskivert.mustache.Mustache
+import com.samskivert.mustache.Template
+import java.io.Serializable
+import java.io.Writer
+import org.openapitools.codegen.CodegenResponse
+
+class AllowedMediaTypesLambda : Mustache.Lambda, Serializable {
+    override fun execute(
+        fragment: Template.Fragment,
+        writer: Writer,
+    ) {
+        val response: CodegenResponse = fragment.context() as CodegenResponse
+        if (response.is2xx) {
+            val mediaTypes: List<String> =
+                response.content.keys.filter {
+                    !it.contains("xml", ignoreCase = true)
+                }
+
+            val context = mapOf("mediaTypes" to mediaTypes)
+            fragment.execute(context, writer)
+        }
+    }
+}