refactor: Add KMM scaffolding

.gitignore

@@ -1,34 +1,11 @@
-# Miscellaneous
-*.class
-*.log
-*.pyc
-*.swp
+*.iml
+.gradle
+.idea
 .DS_Store
-.atom/
-.buildlog/
+build
+captures
+.externalNativeBuild
+.cxx
+local.properties
+xcuserdata
 .envrc
-.history
-.svn/
-migrate_working_dir/
-
-# IntelliJ related
-*.iml
-*.ipr
-*.iws
-.idea/
-
-# The .vscode folder contains launch configuration and tasks you configure in
-# VS Code which you may wish to be included in version control, so this line
-# is commented out by default.
-#.vscode/
-
-# Symbolication related
-app.*.symbols
-
-# Obfuscation related
-app.*.map.json
-
-# Android Studio will place build artifacts here
-/android/app/debug
-/android/app/profile
-/android/app/release

androidApp/build.gradle.kts

@@ -0,0 +1,48 @@
+plugins {
+    alias(libs.plugins.androidApplication)
+    alias(libs.plugins.kotlinAndroid)
+}
+
+android {
+    namespace = "com.mbta.tid.mbta_app.android"
+    compileSdk = 34
+    defaultConfig {
+        applicationId = "com.mbta.tid.mbta_app"
+        minSdk = 28
+        targetSdk = 34
+        versionCode = 1
+        versionName = "1.0"
+    }
+    buildFeatures {
+        compose = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = libs.versions.compose.compiler.get()
+    }
+    packaging {
+        resources {
+            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+        }
+    }
+    buildTypes {
+        getByName("release") {
+            isMinifyEnabled = false
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
+
+dependencies {
+    implementation(projects.shared)
+    implementation(libs.compose.ui)
+    implementation(libs.compose.ui.tooling.preview)
+    implementation(libs.compose.material3)
+    implementation(libs.androidx.activity.compose)
+    debugImplementation(libs.compose.ui.tooling)
+}

androidApp/src/main/AndroidManifest.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <application
+        android:allowBackup="false"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest> 

androidApp/src/main/java/com/mbta/tid/mbta_app/android/MainActivity.kt

@@ -0,0 +1,40 @@
+package com.mbta.tid.mbta_app.android
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.*
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import com.mbta.tid.mbta_app.Greeting
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            MyApplicationTheme {
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.background
+                ) {
+                    GreetingView(Greeting().greet())
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun GreetingView(text: String) {
+    Text(text = text)
+}
+
+@Preview
+@Composable
+fun DefaultPreview() {
+    MyApplicationTheme {
+        GreetingView("Hello, Android!")
+    }
+}

androidApp/src/main/java/com/mbta/tid/mbta_app/android/MyApplicationTheme.kt

@@ -0,0 +1,55 @@
+package com.mbta.tid.mbta_app.android
+
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Shapes
+import androidx.compose.material3.Typography
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+
+@Composable
+fun MyApplicationTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    content: @Composable () -> Unit
+) {
+    val colors = if (darkTheme) {
+        darkColorScheme(
+            primary = Color(0xFFBB86FC),
+            secondary = Color(0xFF03DAC5),
+            tertiary = Color(0xFF3700B3)
+        )
+    } else {
+        lightColorScheme(
+            primary = Color(0xFF6200EE),
+            secondary = Color(0xFF03DAC5),
+            tertiary = Color(0xFF3700B3)
+        )
+    }
+    val typography = Typography(
+        bodyMedium = TextStyle(
+            fontFamily = FontFamily.Default,
+            fontWeight = FontWeight.Normal,
+            fontSize = 16.sp
+        )
+    )
+    val shapes = Shapes(
+        small = RoundedCornerShape(4.dp),
+        medium = RoundedCornerShape(4.dp),
+        large = RoundedCornerShape(0.dp)
+    )
+
+    MaterialTheme(
+        colorScheme = colors,
+        typography = typography,
+        shapes = shapes,
+        content = content
+    )
+}

androidApp/src/main/res/values/styles.xml

@@ -0,0 +1,3 @@
+<resources>
+    <style name="AppTheme" parent="android:Theme.Material.NoActionBar"/>
+</resources>

build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+    //trick: for the same plugin versions in all sub-modules
+    alias(libs.plugins.androidApplication).apply(false)
+    alias(libs.plugins.androidLibrary).apply(false)
+    alias(libs.plugins.kotlinAndroid).apply(false)
+    alias(libs.plugins.kotlinMultiplatform).apply(false)
+}

gradle.properties

@@ -0,0 +1,12 @@
+#Gradle
+org.gradle.jvmargs=-Xmx2048M -Dfile.encoding=UTF-8 -Dkotlin.daemon.jvm.options\="-Xmx2048M"
+
+#Kotlin
+kotlin.code.style=official
+
+#Android
+android.useAndroidX=true
+android.nonTransitiveRClass=true
+
+#MPP
+kotlin.mpp.enableCInteropCommonization=true

gradle/libs.versions.toml

@@ -0,0 +1,23 @@
+[versions]
+agp = "8.1.2"
+kotlin = "1.9.10"
+compose = "1.5.1"
+compose-compiler = "1.5.3"
+compose-material3 = "1.1.2"
+androidx-activityCompose = "1.7.2"
+
+[libraries]
+kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
+androidx-activity-compose = { module = "androidx.activity:activity-compose", version.ref = "androidx-activityCompose" }
+compose-ui = { module = "androidx.compose.ui:ui", version.ref = "compose" }
+compose-ui-tooling = { module = "androidx.compose.ui:ui-tooling", version.ref = "compose" }
+compose-ui-tooling-preview = { module = "androidx.compose.ui:ui-tooling-preview", version.ref = "compose" }
+compose-foundation = { module = "androidx.compose.foundation:foundation", version.ref = "compose" }
+compose-material3 = { module = "androidx.compose.material3:material3", version.ref = "compose-material3" }
+
+[plugins]
+androidApplication = { id = "com.android.application", version.ref = "agp" }
+androidLibrary = { id = "com.android.library", version.ref = "agp" }
+kotlinAndroid = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+kotlinMultiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
+kotlinCocoapods = { id = "org.jetbrains.kotlin.native.cocoapods", version.ref = "kotlin" }

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Fri Dec 15 10:33:52 EST 2023
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists