build: convert to Gradle Kotlin DSL

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

buildSrc/src/main/java/BaseProjectConfig.kt

@@ -0,0 +1,98 @@
+/*
+ * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+import com.android.build.gradle.TestedExtension
+import com.android.build.gradle.internal.dsl.BaseAppModuleExtension
+import org.gradle.api.JavaVersion
+import org.gradle.api.Project
+import org.gradle.api.tasks.Delete
+import org.gradle.api.tasks.testing.Test
+import org.gradle.api.tasks.testing.logging.TestLogEvent
+import org.gradle.api.tasks.wrapper.Wrapper
+import org.gradle.kotlin.dsl.repositories
+import org.gradle.kotlin.dsl.withType
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+/**
+ * Configure root project.
+ * Note that classpath dependencies still need to be defined in the `buildscript` block in the top-level build.gradle.kts file.
+ */
+internal fun Project.configureForRootProject() {
+  // register task for cleaning the build directory in the root project
+  tasks.register("clean", Delete::class.java) {
+    delete(rootProject.buildDir)
+  }
+  tasks.withType<Wrapper> {
+    gradleVersion = "6.7"
+    distributionType = Wrapper.DistributionType.ALL
+    distributionSha256Sum = "0080de8491f0918e4f529a6db6820fa0b9e818ee2386117f4394f95feb1d5583"
+  }
+}
+
+/**
+ * Configure all projects including the root project
+ */
+internal fun Project.configureForAllProjects() {
+  repositories {
+    google()
+    jcenter()
+    maven { setUrl("https://jitpack.io") }
+  }
+  tasks.withType<KotlinCompile> {
+    kotlinOptions {
+      jvmTarget = JavaVersion.VERSION_1_8.toString()
+      freeCompilerArgs = freeCompilerArgs + additionalCompilerArgs
+      languageVersion = "1.4"
+    }
+  }
+  tasks.withType<Test> {
+    maxParallelForks = Runtime.getRuntime().availableProcessors() * 2
+    testLogging {
+      events(TestLogEvent.PASSED, TestLogEvent.SKIPPED, TestLogEvent.FAILED)
+    }
+  }
+}
+/**
+ * Apply configuration options for Android Application projects.
+ */
+@Suppress("UnstableApiUsage")
+internal fun BaseAppModuleExtension.configureAndroidApplicationOptions(project: Project) {
+  project.tasks.withType<KotlinCompile> {
+    kotlinOptions {
+      freeCompilerArgs = freeCompilerArgs + listOf(
+        "-Xopt-in=kotlin.RequiresOptIn",
+        "-Xopt-in=kotlinx.coroutines.ExperimentalCoroutinesApi",
+        "-Xopt-in=androidx.compose.material.ExperimentalMaterialApi"
+      )
+    }
+  }
+}
+
+/**
+ * Apply baseline configurations for all Android projects (Application and Library).
+ */
+@Suppress("UnstableApiUsage")
+internal fun TestedExtension.configureCommonAndroidOptions() {
+  compileSdkVersion(30)
+
+  defaultConfig {
+    minSdkVersion(23)
+    targetSdkVersion(30)
+  }
+
+  packagingOptions {
+    exclude("**/*.version")
+    exclude("**/*.txt")
+    exclude("**/*.kotlin_module")
+    exclude("**/plugin.properties")
+  }
+
+  compileOptions {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+  }
+
+  testOptions.animationsDisabled = true
+}

buildSrc/src/main/java/CoreLibraryDesugaringPlugin.kt

@@ -0,0 +1,34 @@
+import com.android.build.gradle.AppPlugin
+import com.android.build.gradle.LibraryPlugin
+import com.android.build.gradle.TestedExtension
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.getByType
+import org.gradle.kotlin.dsl.withType
+
+/**
+ * A plugin that enables Java 8 desugaring for consuming new Java language APIs.
+ *
+ * Apply this plugin to the build.gradle.kts file in Android Application or Android Library projects:
+ * ```
+ * plugins {
+ *     `core-library-desugaring`
+ * }
+ * ```
+ */
+class CoreLibraryDesugaringPlugin : Plugin<Project> {
+  override fun apply(project: Project) {
+    project.plugins.withType<AppPlugin> {
+      project.extensions.getByType<TestedExtension>().configure(project)
+    }
+
+    project.plugins.withType<LibraryPlugin> {
+      project.extensions.getByType<TestedExtension>().configure(project)
+    }
+  }
+
+  private fun TestedExtension.configure(project: Project) {
+    compileOptions.isCoreLibraryDesugaringEnabled = true
+    project.dependencies.add("coreLibraryDesugaring", Dependencies.AndroidX.coreLibraryDesugaring)
+  }
+}

buildSrc/src/main/java/Dependencies.kt

@@ -0,0 +1,111 @@
+/*
+ * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+private const val ANDROIDX_HILT_VERSION = "1.0.0-alpha02"
+private const val DAGGER_HILT_VERSION = "2.29.1-alpha"
+
+object Dependencies {
+  const val COMPOSE_VERSION = "1.0.0-alpha06"
+  object Kotlin {
+    object Coroutines {
+
+      private const val version = "1.4.1"
+      const val android = "org.jetbrains.kotlinx:kotlinx-coroutines-android:$version"
+      const val core = "org.jetbrains.kotlinx:kotlinx-coroutines-core:$version"
+    }
+  }
+
+  object AndroidX {
+
+    const val activityKtx = "androidx.activity:activity-ktx:1.2.0-beta01"
+    const val appCompat = "androidx.appcompat:appcompat:1.3.0-alpha02"
+    const val browser = "androidx.browser:browser:1.3.0-beta01"
+    const val coreKtx = "androidx.core:core-ktx:1.5.0-alpha04"
+    const val coreLibraryDesugaring = "com.android.tools:desugar_jdk_libs:1.0.10"
+    const val material = "com.google.android.material:material:1.3.0-alpha03"
+
+    object Compose {
+
+      const val compiler = "androidx.compose.compiler:compiler:$COMPOSE_VERSION"
+      const val foundation = "androidx.compose.foundation:foundation:$COMPOSE_VERSION"
+      const val foundationLayout = "androidx.compose.foundation:foundation-layout:$COMPOSE_VERSION"
+      const val foundationText = "androidx.compose.foundation:foundation-text:$COMPOSE_VERSION"
+      const val material = "androidx.compose.material:material:$COMPOSE_VERSION"
+      const val navigation = "androidx.navigation:navigation-compose:1.0.0-alpha01"
+      const val runtime = "androidx.compose.runtime:runtime:$COMPOSE_VERSION"
+      const val ui = "androidx.compose.ui:ui:$COMPOSE_VERSION"
+      const val uiText = "androidx.compose.ui:ui-text:$COMPOSE_VERSION"
+      const val uiTextAndroid = "androidx.compose.ui:ui-text-android:$COMPOSE_VERSION"
+      const val uiUnit = "androidx.compose.ui:ui-unit:$COMPOSE_VERSION"
+      const val uiTooling = "androidx.ui:ui-tooling:$COMPOSE_VERSION"
+    }
+
+    object Hilt {
+      const val dagger = "com.google.dagger:hilt-android:$DAGGER_HILT_VERSION"
+      const val daggerCompiler = "com.google.dagger:hilt-compiler:$DAGGER_HILT_VERSION"
+      const val daggerHiltCompiler = "androidx.hilt:hilt-compiler:$ANDROIDX_HILT_VERSION"
+      const val hiltLifecycleViewmodel =
+        "androidx.hilt:hilt-lifecycle-viewmodel:$ANDROIDX_HILT_VERSION"
+    }
+
+    object Lifecycle {
+
+      private const val version = "2.3.0-beta01"
+      const val runtimeKtx = "androidx.lifecycle:lifecycle-runtime-ktx:$version"
+      const val viewmodelKtx = "androidx.lifecycle:lifecycle-viewmodel-ktx:$version"
+    }
+
+    object Room {
+
+      private const val version = "2.3.0-alpha03"
+      const val compiler = "androidx.room:room-compiler:$version"
+      const val ktx = "androidx.room:room-ktx:$version"
+      const val runtime = "androidx.room:room-runtime:$version"
+    }
+  }
+
+  object ThirdParty {
+
+    const val accompanist = "dev.chrisbanes.accompanist:accompanist-coil:0.3.2"
+    const val customtabs = "saschpe.android:customtabs:3.0.2"
+
+    object Moshi {
+
+      private const val version = "1.11.0"
+      const val codegen = "com.squareup.moshi:moshi-kotlin-codegen:$version"
+      const val lib = "com.squareup.moshi:moshi:$version"
+    }
+
+    object Retrofit {
+
+      private const val version = "2.9.0"
+      const val lib = "com.squareup.retrofit2:retrofit:$version"
+      const val moshi = "com.squareup.retrofit2:converter-moshi:$version"
+    }
+
+    object Roomigrant {
+
+      private const val version = "0.2.0"
+      const val compiler = "com.github.MatrixDev.Roomigrant:RoomigrantCompiler:$version"
+      const val runtime = "com.github.MatrixDev.Roomigrant:RoomigrantLib:$version"
+    }
+
+  }
+
+  object Testing {
+
+    const val daggerHilt = "com.google.dagger:hilt-android-testing:$DAGGER_HILT_VERSION"
+    const val junit = "junit:junit:4.13.1"
+    const val mockWebServer = "com.squareup.okhttp3:mockwebserver:3.14.9"
+    const val uiTest = "androidx.ui:ui-test:$COMPOSE_VERSION"
+
+    object AndroidX {
+
+      private const val version = "1.3.1-alpha02"
+      const val runner = "androidx.test:runner:$version"
+      const val rules = "androidx.test:rules:$version"
+    }
+  }
+}

buildSrc/src/main/java/KaptConfigs.kt

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+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.configure
+import org.jetbrains.kotlin.gradle.plugin.KaptExtension
+
+/**
+ * Apply default kapt configs to the [Project].
+ */
+internal fun Project.configureKapt() {
+  extensions.configure<KaptExtension> {
+    javacOptions {
+      option("-Adagger.fastInit=enabled")
+      option("-Adagger.experimentalDaggerErrorMessages=enabled")
+      option("-Xmaxerrs", 500)
+      option("-Adagger.moduleBindingValidation=ERROR")
+    }
+  }
+}

buildSrc/src/main/java/KotlinCompilerArgs.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+internal val additionalCompilerArgs = listOf(
+  "-Xallow-jvm-ir-dependencies",
+  "-Xskip-prerelease-check"
+)

buildSrc/src/main/java/LobstersPlugin.kt

@@ -0,0 +1,52 @@
+/*
+ * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+import com.android.build.gradle.TestedExtension
+import com.android.build.gradle.internal.dsl.BaseAppModuleExtension
+import com.android.build.gradle.internal.plugins.AppPlugin
+import com.android.build.gradle.internal.plugins.LibraryPlugin
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.plugins.JavaLibraryPlugin
+import org.gradle.api.plugins.JavaPlugin
+import org.gradle.api.tasks.compile.JavaCompile
+import org.gradle.kotlin.dsl.getByType
+import org.gradle.kotlin.dsl.withType
+import org.jetbrains.kotlin.gradle.internal.Kapt3GradleSubplugin
+
+class LobstersPlugin : Plugin<Project> {
+
+  override fun apply(project: Project) {
+    project.configureForAllProjects()
+
+    if (project.isRoot) {
+      project.configureForRootProject()
+    }
+
+    project.plugins.all {
+      when (this) {
+        is JavaPlugin,
+        is JavaLibraryPlugin -> {
+          project.tasks.withType<JavaCompile> {
+            options.compilerArgs.add("-Xlint:unchecked")
+            options.isDeprecation = true
+          }
+        }
+        is LibraryPlugin -> {
+          project.extensions.getByType<TestedExtension>().configureCommonAndroidOptions()
+        }
+        is AppPlugin -> {
+          project.extensions.getByType<TestedExtension>().configureCommonAndroidOptions()
+          project.extensions.getByType<BaseAppModuleExtension>().configureAndroidApplicationOptions(project)
+        }
+        is Kapt3GradleSubplugin -> {
+          project.configureKapt()
+        }
+      }
+    }
+  }
+}
+
+private val Project.isRoot get() = this == this.rootProject