Serve skiko on the server

Author: ilgonmic

build.gradle.kts

@@ -1,3 +1,4 @@
+import org.gradle.kotlin.dsl.support.serviceOf
 import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootExtension
 import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootPlugin
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
@@ -53,6 +54,11 @@ allprojects {
     }
 }
 
+val resourceDependency: Configuration by configurations.creating {
+    isCanBeResolved = true
+    isCanBeConsumed = false
+}
+
 dependencies {
     annotationProcessor("org.springframework:spring-context-indexer")
     implementation("com.google.code.gson:gson")
@@ -79,6 +85,8 @@ dependencies {
         exclude(group = "org.junit.vintage", module = "junit-vintage-engine")
     }
     testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.3")
+
+    resourceDependency("org.jetbrains.skiko:skiko-js-wasm-runtime:0.7.90")
 }
 
 fun buildPropertyFile() {
@@ -156,6 +164,15 @@ val buildLambda by tasks.creating(Zip::class) {
     }
 }
 
+tasks.named<Copy>("processResources") {
+    val archiveOperation = project.serviceOf<ArchiveOperations>()
+    from(resourceDependency.map {
+        archiveOperation.zipTree(it)
+    }) {
+        into("com/compiler/server")
+    }
+}
+
 tasks.withType<Test> {
     dependsOn(rootProject.the<NodeJsRootExtension>().nodeJsSetupTaskProvider)
     useJUnitPlatform()

src/main/kotlin/com/compiler/server/controllers/ResourceRestController.kt

@@ -0,0 +1,37 @@
+package com.compiler.server.controllers
+
+import org.springframework.core.io.FileSystemResource
+import org.springframework.core.io.Resource
+import org.springframework.http.*
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+import java.util.concurrent.TimeUnit
+
+
+@RestController
+@RequestMapping(value = ["/api/resource", "/api/**/resource"])
+class ResourceRestController {
+  @GetMapping("/skiko.mjs")
+  fun getSkikoMjs(): ResponseEntity<Resource> {
+    return cacheableResource("/com/compiler/server/skiko.mjs", MediaType("text", "javascript"))
+  }
+
+  @GetMapping("/skiko.wasm")
+  fun getSkikoWasm(): ResponseEntity<Resource> {
+    return cacheableResource("/com/compiler/server/skiko.wasm", MediaType("application", "wasm"))
+  }
+
+  private fun cacheableResource(path: String, mediaType: MediaType): ResponseEntity<Resource> {
+    val resourcePath = javaClass.getResource(path)?.path
+      ?: return ResponseEntity.internalServerError().build()
+
+    val resource = FileSystemResource(resourcePath)
+    val headers = HttpHeaders().apply {
+      contentType = mediaType
+      cacheControl = CacheControl.maxAge(365, TimeUnit.DAYS).headerValue
+    }
+
+    return ResponseEntity(resource, headers, HttpStatus.OK)
+  }
+}