Erasmussen/cdt 1128 (#31)

* Test new SimpleGradleBuildDsl.

* Update GRADLE_OPTS formatting.

* Wrap with quotes.

* Fix incorrect variable usage, wrap env vars correctly.

dsl/src/main/kotlin/com/code42/jenkins/pipelinekt/dsl/step/custom/SimpleGradleBuildDsl.kt

@@ -0,0 +1,72 @@
+package com.code42.jenkins.pipelinekt.dsl.step.custom
+
+import com.code42.jenkins.pipelinekt.core.conditional.BooleanStatement
+import com.code42.jenkins.pipelinekt.core.step.Step
+import com.code42.jenkins.pipelinekt.core.vars.Var
+import com.code42.jenkins.pipelinekt.core.vars.ext.environmentVar
+import com.code42.jenkins.pipelinekt.core.vars.ext.strDouble
+import com.code42.jenkins.pipelinekt.core.vars.ext.strSingle
+import com.code42.jenkins.pipelinekt.dsl.DslContext
+import com.code42.jenkins.pipelinekt.dsl.step.conditional.condition
+import com.code42.jenkins.pipelinekt.dsl.step.conditional.containsSubstring
+import com.code42.jenkins.pipelinekt.dsl.step.declarative.bat
+import com.code42.jenkins.pipelinekt.dsl.step.declarative.sh
+import com.code42.jenkins.pipelinekt.dsl.step.declarative.withEnv
+
+data class SimpleGradleBuildDsl(
+    val shellContext: ShellContext = ShellContext.Sh,
+    val gradleUserProperty: String = "gradle.wrapperUser",
+    val gradlePasswordProperty: String = "gradle.wrapperPassword",
+    val gradleUserPropertyValue: String = "\"\${ARTIFACTORY_USERNAME}\"",
+    val gradlePasswordPropertyValue: String = "\"\${ARTIFACTORY_PASSWORD}\""
+) {
+
+    fun DslContext<Step>.gradleCommand(command: String, additionalBuildArgs: String = "") =
+        gradleCommand(command, additionalBuildArgs.strDouble())
+
+    fun DslContext<Step>.gradleCommand(command: String, additionalBuildArgs: Var.Literal.Str) =
+        when (shellContext) {
+            ShellContext.Sh -> gradleCommandSh(command, additionalBuildArgs)
+            ShellContext.Bat -> gradleCommandBat(command, additionalBuildArgs)
+            is ShellContext.Inferred -> gradleCommandMultiPlatform(command, additionalBuildArgs)
+        }
+
+    fun DslContext<Step>.gradleCommandSh(command: String, additionalBuildArgs: String = "") =
+        gradleCommandSh(command, additionalBuildArgs.strDouble())
+
+    fun DslContext<Step>.gradleCommandBat(command: String, additionalBuildArgs: String = "") =
+        this.gradleCommandBat(command, additionalBuildArgs.strDouble())
+
+    fun DslContext<Step>.gradleCommandSh(command: String, additionalBuildArgs: Var.Literal.Str) =
+        withEnv(
+            mapOf(
+                "GRADLE_USER_HOME" to "${"WORKSPACE".environmentVar()}/.gradle-home-tmp",
+                "JENKINS_NODE_COOKIE" to "dontKillMe",
+                "GRADLE_OPTS" to "-D$gradleUserProperty=\'$gradleUserPropertyValue\' " +
+                        "-D$gradlePasswordProperty=\'$gradlePasswordPropertyValue\'"
+            )
+        ) {
+            sh(("./gradlew --stacktrace --build-cache $additionalBuildArgs $command").strDouble())
+        }
+
+    fun DslContext<Step>.gradleCommandBat(command: String, additionalBuildArgs: Var.Literal.Str) =
+        withEnv(
+            mapOf(
+                "GRADLE_USER_HOME" to "${"WORKSPACE".environmentVar()}/.gradle-home-tmp",
+                "JENKINS_NODE_COOKIE" to "dontKillMe",
+                "GRADLE_OPTS" to "-D$gradleUserProperty=\"$gradleUserPropertyValue\" " +
+                        "-D$gradlePasswordPropertyValue=\"$gradlePasswordPropertyValue\""
+            )
+        ) {
+            bat(("call gradlew.bat --stacktrace --build-cache $additionalBuildArgs $command").strDouble())
+        }
+
+    fun DslContext<Step>.gradleCommandMultiPlatform(
+        command: String,
+        additionalBuildArgs: Var.Literal.Str,
+        booleanStatement: BooleanStatement = "PATH".environmentVar().containsSubstring("C:".strSingle())
+    ) =
+        condition({ booleanStatement },
+            { gradleCommandBat(command, additionalBuildArgs) },
+            { gradleCommandSh(command, additionalBuildArgs) })
+}