1 files changed, 55 insertions, 0 deletions
diff --git a/buildSrc/src/main/kotlin/WebGenInstallTask.groovy b/buildSrc/src/main/kotlin/WebGenInstallTask.groovy
new file mode 100644
index 00000000..a70effee
--- /dev/null
+++ b/buildSrc/src/main/kotlin/WebGenInstallTask.groovy
@@ -0,0 +1,55 @@
+import com.moowork.gradle.node.npm.NpmTask
+import org.gradle.api.file.DirectoryProperty
+import org.gradle.api.file.RegularFileProperty
+import org.gradle.api.model.ObjectFactory
+import org.gradle.api.tasks.OutputDirectory
+import org.gradle.api.tasks.OutputFile
+
+/**
+ * Based on https://github.com/apollographql/apollo-android/blob/master/apollo-gradle-plugin/src/main/groovy/com/apollographql/apollo/gradle/ApolloCodegenInstallTask.groovy
+ */
+class WebGenInstallTask extends NpmTask {
+
+    static final String TAG = "frost-web-gen"
+    public static final String NAME = "installWebGen"
+    static final String INSTALLATION_PATH = TAG + File.separator + "node_modules"
+    static final String PACKAGE_FILE_PATH = TAG + File.separator + "package.json"
+
+    static final String TYPESCRIPT_VERSION = "3.3.1"
+    static final String SASS_VERSION = "1.19.0"
+
+    @OutputDirectory
+    final DirectoryProperty installDir = ObjectFactory.directoryProperty()
+    @OutputFile
+    final RegularFileProperty packageFile = ObjectFactory.fileProperty()
+
+    WebGenInstallTask() {
+        setGroup("frost")
+        setDescription("Runs npm install for $TAG")
+        installDir.set(project.file(new File(project.buildDir, INSTALLATION_PATH)))
+        packageFile.set(project.file(new File(project.buildDir, PACKAGE_FILE_PATH)))
+    }
+
+    @Override
+    void exec() {
+        installDir.get().getAsFile().deleteDir()
+        writePackageFile(packageFile.get().getAsFile())
+
+        setArgs(Lists.newArrayList("install", "typescript@" + TYPESCRIPT_VERSION, "sass@" + SASS_VERSION, "--save", "--save-exact"))
+        getLogging().captureStandardOutput(LogLevel.INFO)
+
+        super.exec()
+    }
+
+    /**
+     * Generates a dummy package.json file to silence npm warnings
+     */
+    private static void writePackageFile(File apolloPackageFile) {
+        apolloPackageFile.write(
+                '''{
+  "name": "frost-web-gen"
+}
+'''
+        )
+    }
+}
+\ No newline at end of file