[Gradle, JS] Simplify css settings

#KT-32721 fixed

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/webpack/KotlinWebpackAssetExtractPolicy.kt

@@ -1,12 +0,0 @@
-/*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.gradle.targets.js.webpack
-
-enum class KotlinWebpackAssetExtractPolicy {
-    ALWAYS,
-    DEPENDS_ON_MODE,
-    NONE
-}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/webpack/KotlinWebpackConfig.kt

@@ -12,7 +12,6 @@ import org.jetbrains.kotlin.gradle.targets.js.NpmVersions
 import org.jetbrains.kotlin.gradle.targets.js.RequiredKotlinJsDependency
 import org.jetbrains.kotlin.gradle.targets.js.appendConfigsFromDir
 import org.jetbrains.kotlin.gradle.targets.js.jsQuoted
-import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpackAssetExtractPolicy.*
 import java.io.File
 import java.io.Serializable
 import java.io.StringWriter
@@ -58,11 +57,9 @@ data class KotlinWebpackConfig(
             if (cssSettings == null || !cssSettings.enabled) return@also
 
             it.add(versions.cssLoader)
-            if (cssSettings.extractPolicy in listOf(NONE, DEPENDS_ON_MODE)) {
+            if (cssSettings.inline) {
                 it.add(versions.styleLoader)
-            }
-
-            if (cssSettings.extractPolicy in listOf(ALWAYS, DEPENDS_ON_MODE)) {
+            } else {
                 it.add(versions.miniCssExtractPlugin)
             }
         }
@@ -280,31 +277,22 @@ data class KotlinWebpackConfig(
             |        options: {}
             |    })
             |    config.plugins.push(new MiniCssExtractPlugin())
-            """
+            """.trimMargin()
 
-        val nonExtractedCss =
+        val inlinedCss =
             """
             |    use.unshift({
             |        loader: 'style-loader',
             |        options: {}
             |    })
             |    
-            """
-
-        val extractedSettings = when (cssSettings.extractPolicy) {
-            ALWAYS -> extractedCss
-            DEPENDS_ON_MODE ->
-                """
-            |    if (config.mode === 'production') {
-            |        $extractedCss
-            |    } else {
-            |        $nonExtractedCss
-            |    }
             """.trimMargin()
-            NONE -> nonExtractedCss
-        }
 
-        appendln(extractedSettings)
+        if (cssSettings.inline) {
+            appendln(inlinedCss)
+        } else {
+            appendln(extractedCss)
+        }
 
         appendln(
             """

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/webpack/KotlinWebpackCssSettings.kt

@@ -12,5 +12,5 @@ data class KotlinWebpackCssSettings(
     var enabled: Boolean = true,
 
     @Input
-    var extractPolicy: KotlinWebpackAssetExtractPolicy = KotlinWebpackAssetExtractPolicy.DEPENDS_ON_MODE
+    var inline: Boolean = false
 )