1 files changed, 78 insertions, 0 deletions
diff --git a/dokka-runners/dokkatoo/buildSrc/src/main/kotlin/buildsrc/conventions/android-setup.gradle.kts b/dokka-runners/dokkatoo/buildSrc/src/main/kotlin/buildsrc/conventions/android-setup.gradle.kts
new file mode 100644
index 00000000..ed22d799
--- /dev/null
+++ b/dokka-runners/dokkatoo/buildSrc/src/main/kotlin/buildsrc/conventions/android-setup.gradle.kts
@@ -0,0 +1,78 @@
+package buildsrc.conventions
+
+import org.jetbrains.kotlin.util.suffixIfNot
+
+
+/**
+ * Utilities for preparing Android projects
+ */
+
+plugins {
+  base
+  id("buildsrc.conventions.base")
+}
+
+
+val androidSdkDirPath: Provider<String> = providers
+  // first try getting the SDK installed on via GitHub step setup-android
+  .environmentVariable("ANDROID_SDK_ROOT").map(::File)
+  // else get the project-local SDK
+  .orElse(layout.projectDirectory.file("projects/ANDROID_SDK").asFile)
+  .map { it.invariantSeparatorsPath }
+
+
+val createAndroidLocalPropertiesFile by tasks.registering {
+
+  val localPropertiesFile = temporaryDir.resolve("local.properties")
+  outputs.file(localPropertiesFile).withPropertyName("localPropertiesFile")
+
+  val androidSdkDirPath = androidSdkDirPath
+  inputs.property("androidSdkDirPath", androidSdkDirPath)
+
+  doLast {
+    localPropertiesFile.apply {
+      parentFile.mkdirs()
+      createNewFile()
+      writeText(
+        """
+          |# DO NOT EDIT - Generated by $path
+          |
+          |sdk.dir=${androidSdkDirPath.get()}
+          |
+        """.trimMargin()
+      )
+    }
+  }
+}
+
+
+val updateAndroidLocalProperties by tasks.registering {
+
+  // find all local.properties files
+  val localPropertiesFiles = layout.projectDirectory.dir("projects")
+    .asFileTree
+    .matching { include("**/local.properties") }
+    .files
+
+  outputs.files(localPropertiesFiles).withPropertyName("localPropertiesFiles")
+
+  val androidSdkDirPath = androidSdkDirPath
+  inputs.property("androidSdkDirPath", androidSdkDirPath)
+
+  doLast {
+    localPropertiesFiles
+      .filter { it.exists() }
+      .forEach { file ->
+        file.writeText(
+          file.useLines { lines ->
+            lines.joinToString("\n") { line ->
+              when {
+                line.startsWith("sdk.dir=") -> "sdk.dir=${androidSdkDirPath.get()}"
+                else                        -> line
+              }
+            }.suffixIfNot("\n")
+          }
+        )
+      }
+  }
+}