Android (Kotlin) app template

.github/workflows/ci-javascript.yaml

@@ -115,6 +115,13 @@ jobs:
         with:
           go-version: '^1.13.1'
 
+      - name: Setup Java
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'corretto'
+          java-version: '17'
+          cache: 'gradle'
+
       - name: Install cue lang
         run: go install cuelang.org/go/cmd/cue@latest
 

packages/cli/src/__tests__/e2e/p1/create.spec.ts

@@ -19,7 +19,7 @@ Commands:
   wasm [options] <language> <name>    Create a Polywrap wasm wrapper. langs:
                                       assemblyscript, rust, golang, interface
   app [options] <language> <name>     Create a Polywrap application. langs:
-                                      typescript, python, rust
+                                      typescript, python, rust, android
   plugin [options] <language> <name>  Create a Polywrap plugin. langs:
                                       typescript, rust, python
   template [options] <url> <name>     Download template from a URL. formats:

packages/cli/src/commands/create.ts

@@ -28,7 +28,7 @@ const urlStr = intlMsg.commands_create_options_t_url();
 
 export const supportedLangs = {
   wasm: ["assemblyscript", "rust", "golang", "interface"] as const,
-  app: ["typescript", "python", "rust"] as const,
+  app: ["typescript", "python", "rust", "android"] as const,
   plugin: ["typescript", "rust", "python"] as const,
 };
 

packages/templates/app/android/.gitignore

@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

packages/templates/app/android/app/.gitignore

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

packages/templates/app/android/app/build.gradle.kts

@@ -0,0 +1,109 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+    id("org.jetbrains.kotlin.plugin.serialization")
+    id("com.github.node-gradle.node")
+}
+
+android {
+    namespace = "io.template.polywrap"
+    compileSdk = 33
+
+    defaultConfig {
+        applicationId = "io.template.polywrap"
+        minSdk = 24
+        targetSdk = 33
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary = true
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+    buildFeatures {
+        compose = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.4.8"
+    }
+    packaging {
+        resources {
+            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+        }
+    }
+}
+
+dependencies {
+    // polywrap client
+    implementation("io.polywrap:polywrap-client:0.10.4")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.5.1")
+    // polywrap logger plugin
+    implementation("io.polywrap.plugins:logger:0.10.4")
+    implementation("com.github.tony19:logback-android:3.0.0")
+
+    // ui
+    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.6.1")
+
+    // defaults
+    implementation("androidx.core:core-ktx:1.10.1")
+    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.1")
+    implementation("androidx.activity:activity-compose:1.7.2")
+    implementation(platform("androidx.compose:compose-bom:2023.03.00"))
+    implementation("androidx.compose.ui:ui")
+    implementation("androidx.compose.ui:ui-graphics")
+    implementation("androidx.compose.ui:ui-tooling-preview")
+    implementation("androidx.compose.material3:material3")
+    testImplementation("junit:junit:4.13.2")
+    androidTestImplementation("androidx.test.ext:junit:1.1.5")
+    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+    androidTestImplementation(platform("androidx.compose:compose-bom:2023.03.00"))
+    androidTestImplementation("androidx.compose.ui:ui-test-junit4")
+    debugImplementation("androidx.compose.ui:ui-tooling")
+    debugImplementation("androidx.compose.ui:ui-test-manifest")
+}
+
+// set up NodeJS to run the Polywrap CLI
+// NodeJS installation will be stored in gradle cache
+node {
+    val nullString: String? = null
+    distBaseUrl.set(nullString)
+    // Whether to download and install a specific Node.js version or not
+    // If false, it will use the globally installed Node.js
+    // If true, it will download node using above parameters
+    // Note that npm is bundled with Node.js
+    download.set(true)
+}
+
+// run polwyrap codegen
+tasks.register<com.github.gradle.node.npm.task.NpxTask>("codegen") {
+    group = "polywrap"
+    dependsOn(tasks.npmInstall)
+    command.set("polywrap")
+    args.set(listOf("codegen",
+        "-m", "$rootDir/polywrap.yaml",
+        "-g", "$projectDir/src/main/java/wrap"
+    ))
+}
+
+// set polywrap codegen to run before each build
+tasks.withType<KotlinCompile> { dependsOn("codegen") }

packages/templates/app/android/app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

packages/templates/app/android/app/src/androidTest/java/io/template/polywrap/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package io.template.polywrap
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("io.template.polywrap", appContext.packageName)
+    }
+}

packages/templates/app/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Template"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.Template">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

packages/templates/app/android/app/src/main/assets/logback.xml

@@ -0,0 +1,18 @@
+<configuration
+    xmlns="https://tony19.github.io/logback-android/xml"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="https://tony19.github.io/logback-android/xml https://cdn.jsdelivr.net/gh/tony19/logback-android/logback.xsd"
+>
+    <appender name="logcat" class="ch.qos.logback.classic.android.LogcatAppender">
+        <tagEncoder>
+            <pattern>%logger{12}</pattern>
+        </tagEncoder>
+        <encoder>
+            <pattern>[%-20thread] %msg</pattern>
+        </encoder>
+    </appender>
+
+    <root level="DEBUG">
+        <appender-ref ref="logcat" />
+    </root>
+</configuration>

packages/templates/app/android/app/src/main/java/io/template/polywrap/MainActivity.kt

@@ -0,0 +1,59 @@
+package io.template.polywrap
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import io.template.myapplication.ui.theme.MyApplicationTheme
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            MyApplicationTheme {
+                Column(
+                    verticalArrangement = Arrangement.Center,
+                    modifier = Modifier.fillMaxHeight().padding(16.dp)
+                ) {
+                    Surface(
+                        modifier = Modifier.fillMaxWidth().height(60.dp),
+                        color = MaterialTheme.colorScheme.background
+                    ) {
+                        PolywrapDemo()
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun PolywrapDemo(demoViewModel: PolywrapDemoViewModel = viewModel()) {
+    Button(onClick = { demoViewModel.polywrapDemo() }) {
+        Text(text = "Click here and check the logs!")
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+fun PolywrapDemoPreview() {
+    MyApplicationTheme {
+        PolywrapDemo()
+    }
+}

packages/templates/app/android/app/src/main/java/io/template/polywrap/PolywrapDemoViewModel.kt

@@ -0,0 +1,69 @@
+package io.template.polywrap
+
+import android.util.Log
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import io.polywrap.client.PolywrapClient
+import io.polywrap.configBuilder.polywrapClient
+import io.polywrap.plugins.logger.loggerPlugin
+import kotlinx.coroutines.launch
+import wrap.Ethereum
+import wrap.EthereumArgsEncodeParams
+import wrap.Logging
+import wrap.LoggingArgsLog
+import wrap.LoggingLogLevel
+
+class PolywrapDemoViewModel: ViewModel() {
+
+    // we can create a custom client
+    val loggerInterfaceUri = "wrapscan.io/polywrap/logger@1.0"
+    private val client = polywrapClient {
+        addDefaults()
+        setPackage("plugin/logger" to loggerPlugin(null))
+        addInterfaceImplementation(loggerInterfaceUri, "plugin/logger")
+        setRedirect(loggerInterfaceUri to "plugin/logger")
+    }
+
+    // and use the custom client to create an SDK class instance
+    private val logger = Logging(client)
+    // the client can be shared across SDK instances
+    private val ethereum = Ethereum(client)
+
+    // Because their lifetimes are tied to the client, SDK instances work well as extension properties
+    val PolywrapClient.eth
+        get() = ethereum
+
+    // or we can create an SDK class instance with a new client using default configuration
+    private val defaultEth = Ethereum()
+
+    fun polywrapDemo() = viewModelScope.launch {
+        Log.i("polywrapDemo","Invoking: Logging.info(...)")
+
+        logger.log(LoggingArgsLog(LoggingLogLevel.INFO, "Hello there")).getOrThrow()
+        logger.log(LoggingArgsLog(LoggingLogLevel.INFO, "Hello again")).getOrThrow()
+        logger.log(LoggingArgsLog(LoggingLogLevel.INFO, "One last time...")).getOrThrow()
+
+        Log.i("polywrapDemo","Invoking: Ethereum.encodeParams(...)")
+
+        val encodeArgs = EthereumArgsEncodeParams(
+            types = listOf("address", "uint256"),
+            values = listOf("0xB1B7586656116D546033e3bAFF69BFcD6592225E", "500")
+        )
+        val result = client.eth.encodeParams(encodeArgs)
+
+        if (result.isSuccess) {
+            println("Ethereum.encodeParams:\n${result.getOrThrow()}")
+        } else {
+            println("Error - Ethereum.encodeParams:\n${result.exceptionOrNull()}")
+        }
+    }
+
+    override fun onCleared() {
+        super.onCleared()
+        // remember to close clients to prevent memory leaks when you're done using them
+        client.close()
+        defaultEth.client.close()
+    }
+}
+
+