[Gradle] kgp-idea-proto: Automate protoc setup

^KT-60053 In Progress

gradle/verification-metadata.xml

@@ -1799,6 +1799,12 @@
             <sha256 value="50f99a9a77735fb1b0c2c12cb6457c88cd0180b9106190d89cbf311ef8ce675d" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="com.google.protobuf" name="protoc" version="3.21.9">
+         <artifact name="protoc-3.21.9-osx-aarch_64.exe">
+            <md5 value="795b78841e779eceab9ea32acdbaf8fc" origin="Generated by Gradle"/>
+            <sha256 value="aa75cfcb456ced3784f989b0a90d06c03cc8620d1e8fce893707344eb8689d3b" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="com.google.testing.platform" name="core-proto" version="0.0.8-alpha01">
          <artifact name="core-proto-0.0.8-alpha01.jar">
             <md5 value="c4ca15c622b6ecbf566cd8ea28a90a55" origin="Generated by Gradle"/>

libraries/tools/kotlin-gradle-plugin-idea-proto/build.gradle.kts

@@ -1,6 +1,8 @@
 @file:Suppress("HasPlatformType")
 
 import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
+import org.jetbrains.kotlin.konan.target.HostManager
+import org.jetbrains.kotlin.konan.target.KonanTarget.*
 
 plugins {
     kotlin("jvm")
@@ -64,35 +66,68 @@ run {
     }
 }
 
+
 /* Setup protoc */
-tasks.register<Exec>("protoc") {
+run {
-    val protoSources = file("src/main/proto")
+    val protoc = configurations.create("protoc") {
-    val javaOutput = file("src/generated/java/")
+        isCanBeResolved = true
-    val kotlinOutput = file("src/generated/kotlin/")
+        isCanBeConsumed = false
-
-    inputs.dir(protoSources)
-    outputs.dir(javaOutput)
-    outputs.dir(kotlinOutput)
-
-    doFirst {
-        javaOutput.deleteRecursively()
-        kotlinOutput.deleteRecursively()
-        javaOutput.mkdirs()
-        kotlinOutput.mkdirs()
     }
 
-    workingDir(project.projectDir)
+    dependencies {
+        protoc("com.google.protobuf:protoc:3.21.9") {
+            artifact {
+                type = "exe"
+                classifier = when (HostManager.host) {
+                    MACOS_ARM64 -> "osx-aarch_64"
+                    MACOS_X64 -> "osx-x86_64"
+                    MINGW_X64 -> "windows-x86_64"
+                    LINUX_X64 -> "linux-x86_64"
+                    else -> null
+                }
+            }
+        }
+    }
 
-    commandLine(
+    val protocExecutable = buildDir.resolve("protoc/bin")
-        *arrayOf(
+    val setupProtoc = tasks.register("setupProtoc") {
-            "protoc",
+        doFirst {
-            "-I=$protoSources",
+            protoc.files.single().copyTo(protocExecutable, overwrite = true)
-            "--java_out=${javaOutput.absolutePath}",
+            protocExecutable.setExecutable(true)
-            "--kotlin_out=${kotlinOutput.absolutePath}"
+        }
-        ) + protoSources.listFiles().orEmpty()
+    }
-            .filter { it.extension == "proto" }
+
-            .map { it.path },
+    tasks.register<Exec>("protoc") {
-    )
+        dependsOn(setupProtoc)
+
+        val protoSources = file("src/main/proto")
+        val javaOutput = file("src/generated/java/")
+        val kotlinOutput = file("src/generated/kotlin/")
+
+        inputs.dir(protoSources)
+        outputs.dir(javaOutput)
+        outputs.dir(kotlinOutput)
+
+        doFirst {
+            javaOutput.deleteRecursively()
+            kotlinOutput.deleteRecursively()
+            javaOutput.mkdirs()
+            kotlinOutput.mkdirs()
+        }
+
+        workingDir(project.projectDir)
+
+        commandLine(
+            *arrayOf(
+                protocExecutable.absolutePath,
+                "-I=$protoSources",
+                "--java_out=${javaOutput.absolutePath}",
+                "--kotlin_out=${kotlinOutput.absolutePath}"
+            ) + protoSources.listFiles().orEmpty()
+                .filter { it.extension == "proto" }
+                .map { it.path },
+        )
+    }
 }
 
 
@@ -118,4 +153,3 @@ run {
         }
     }
 }
-