build: refactor for configuration cache compatibility

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

buildSrc/src/main/java/BaseProjectConfig.kt

@@ -59,6 +59,7 @@ internal fun Project.configureForAllProjects() {
  */
 @Suppress("UnstableApiUsage")
 internal fun BaseAppModuleExtension.configureAndroidApplicationOptions(project: Project) {
+  val minifySwitch = project.providers.environmentVariable("DISABLE_MINIFY").forUseAtConfigurationTime()
   project.tasks.withType<KotlinCompile> {
     kotlinOptions {
       freeCompilerArgs = freeCompilerArgs + listOf(
@@ -68,6 +69,17 @@ internal fun BaseAppModuleExtension.configureAndroidApplicationOptions(project:
       )
     }
   }
+  adbOptions.installOptions("--user 0")
+  buildTypes {
+    named("release") {
+      isMinifyEnabled = !minifySwitch.isPresent
+      setProguardFiles(listOf("proguard-android-optimize.txt", "proguard-rules.pro"))
+    }
+    named("debug") {
+      versionNameSuffix = "-debug"
+      isMinifyEnabled = false
+    }
+  }
 }
 
 /**

buildSrc/src/main/java/LobstersPlugin.kt

@@ -39,6 +39,7 @@ class LobstersPlugin : Plugin<Project> {
         }
         is AppPlugin -> {
           project.extensions.getByType<TestedExtension>().configureCommonAndroidOptions()
+          project.extensions.getByType<BaseAppModuleExtension>().configureBuildSigning(project)
           project.extensions.getByType<BaseAppModuleExtension>().configureAndroidApplicationOptions(project)
         }
         is Kapt3GradleSubplugin -> {

buildSrc/src/main/java/SigningConfig.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+import com.android.build.gradle.internal.dsl.BaseAppModuleExtension
+import java.util.Properties
+import org.gradle.api.Project
+
+private const val KEYSTORE_CONFIG_PATH = "keystore.properties"
+
+/**
+ * Configure signing for all build types.
+ */
+@Suppress("UnstableApiUsage")
+internal fun BaseAppModuleExtension.configureBuildSigning(project: Project) {
+  with(project) {
+    val keystoreConfigFile = rootProject.layout.projectDirectory.file(KEYSTORE_CONFIG_PATH)
+    if (!keystoreConfigFile.asFile.exists()) return
+    val contents = providers.fileContents(keystoreConfigFile).asText.forUseAtConfigurationTime()
+    val keystoreProperties = Properties()
+    keystoreProperties.load(contents.get().byteInputStream())
+    signingConfigs {
+      register("release") {
+        keyAlias = keystoreProperties["keyAlias"] as String
+        keyPassword = keystoreProperties["keyPassword"] as String
+        storeFile = rootProject.file(keystoreProperties["storeFile"] as String)
+        storePassword = keystoreProperties["storePassword"] as String
+      }
+    }
+    val signingConfig = signingConfigs.getByName("release")
+    buildTypes.all { setSigningConfig(signingConfig) }
+  }
+}