Abstract common build logic out to convention plugin

app/build.gradle

@@ -1,6 +1,5 @@
 plugins {
-    id 'com.android.application'
-    id 'kotlin-android'
+    id 'vocable.application'
     id 'kotlin-kapt'
     id 'kotlin-parcelize'
     id "androidx.navigation.safeargs.kotlin"
@@ -10,11 +9,9 @@ plugins {
 
 android {
     namespace 'com.willowtree.vocable'
-    compileSdk 33
     defaultConfig {
+        targetSdk 34
         applicationId "com.willowtree.vocable"
-        minSdkVersion 24
-        targetSdkVersion 33
         //30 was the last versionCode used on Play Store before implementing CI with github actions
         versionCode Integer.valueOf(System.getenv("VERSION_CODE") ?: 1) + 30
         versionName System.getenv("VERSION_NAME") ?: "pre-release" + "(" + versionCode + ")"
@@ -45,13 +42,6 @@ android {
             buildConfigField("boolean", "USE_HEAD_TRACKING", useHeadTracking)
         }
     }
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_17
-    }
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_17.toString()
-    }
     viewBinding {
         enabled = true
     }
@@ -67,8 +57,6 @@ android {
 }
 
 dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation 'androidx.appcompat:appcompat:1.4.1'
     implementation 'androidx.core:core-ktx:1.7.0'
     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.5.1'
@@ -119,7 +107,7 @@ dependencies {
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test.espresso:espresso-intents:3.4.0'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
-    androidTestImplementation 'androidx.test:core:1.4.0'
+    androidTestImplementation(libs.androidx.test.core)
     androidTestImplementation 'androidx.test.uiautomator:uiautomator:2.2.0'
     androidTestImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:$coroutines_version"
     androidTestImplementation 'androidx.test:rules:1.4.0'

build-logic/.gitignore

@@ -0,0 +1 @@
+/build

build-logic/build.gradle.kts

@@ -0,0 +1,10 @@
+plugins {
+    `kotlin-dsl`
+}
+
+group = "com.willowtree.vocable.buildlogic"
+
+dependencies {
+    implementation(libs.android.gradlePlugin)
+    implementation(libs.kotlin.gradlePlugin)
+}

build-logic/settings.gradle.kts

@@ -0,0 +1,13 @@
+dependencyResolutionManagement {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    versionCatalogs {
+        create("libs") {
+            from(files("../gradle/libs.versions.toml"))
+        }
+    }
+}
+
+rootProject.name = "build-logic"

build-logic/src/main/java/android.kt

@@ -0,0 +1,27 @@
+import com.android.build.api.dsl.CommonExtension
+import org.gradle.api.JavaVersion
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.withType
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+fun Project.commonAndroid(extension: CommonExtension<*, *, *, *, *, *>) {
+    pluginManager.apply("org.jetbrains.kotlin.android")
+
+    extension.apply {
+        compileSdk = 34
+        defaultConfig.minSdk = 24
+        compileOptions {
+            sourceCompatibility = JavaVersion.VERSION_17
+            targetCompatibility = JavaVersion.VERSION_17
+        }
+    }
+
+    tasks.withType<KotlinCompile>().configureEach {
+        kotlinOptions {
+            jvmTarget = JavaVersion.VERSION_17.toString()
+            freeCompilerArgs += listOf(
+                "-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi"
+            )
+        }
+    }
+}

build-logic/src/main/java/vocable.application.gradle.kts

@@ -0,0 +1,5 @@
+plugins {
+    id("com.android.application")
+}
+
+commonAndroid(android)

build-logic/src/main/java/vocable.library.gradle.kts

@@ -0,0 +1,5 @@
+plugins {
+    id("com.android.library")
+}
+
+commonAndroid(android)

build.gradle

@@ -1,30 +1,8 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
-
-buildscript {
-    ext.kotlin_version = '1.8.10'
-    repositories {
-        google()
-        maven { url "https://plugins.gradle.org/m2/" }
-        mavenCentral()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:8.0.0'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.6.0"
-        classpath 'com.google.gms:google-services:4.3.15'
-        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.8.1'
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
-    }
-}
-
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}
+plugins {
+    alias(libs.plugins.androidApplication) apply false
+    alias(libs.plugins.kotlinAndroid) apply false
+    alias(libs.plugins.safe.args) apply false
+    alias(libs.plugins.google.services) apply false
+    alias(libs.plugins.crashlytics) apply false
+}

gradle/libs.versions.toml

@@ -1,5 +1,21 @@
 [versions]
 turbine = "1.1.0"
+kotlin = "1.8.10"
+agp = "8.4.1"
+safe-args = "2.6.0"
+google-services = "4.3.15"
+crashlytics = "2.8.1"
+androidx-test = "1.5.0"
 
 [libraries]
-turbine = { group = "app.cash.turbine", name = "turbine", version.ref = "turbine" }
+turbine = { group = "app.cash.turbine", name = "turbine", version.ref = "turbine" }
+android-gradlePlugin = { group = "com.android.tools.build", name = "gradle", version.ref = "agp" }
+kotlin-gradlePlugin = { group = "org.jetbrains.kotlin", name = "kotlin-gradle-plugin", version.ref = "kotlin" }
+androidx-test-core = { group = "androidx.test", name = "core", version.ref = "androidx-test"}
+
+[plugins]
+androidApplication = { id = "com.android.application", version.ref = "agp" }
+kotlinAndroid = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+safe-args = { id = "androidx.navigation.safeargs.kotlin", version.ref = "safe-args" }
+google-services = { id = "com.google.gms.google-services", version.ref = "google-services" }
+crashlytics = { id = "com.google.firebase.crashlytics", version.ref = "crashlytics" }

gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-all.zip

settings.gradle.kts

@@ -0,0 +1,21 @@
+// Needed because of https://issuetracker.google.com/issues/315023802
+gradle.startParameter.excludedTaskNames.addAll(listOf(":build-logic:testClasses"))
+
+pluginManagement {
+    includeBuild("build-logic")
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+rootProject.name = "vocable-android"
+
+include(":app")