feat(android): setup uniffi infra

Cargo.toml

@@ -3,12 +3,14 @@ members  = [
     "./packages/backend/native",
     "./packages/common/native",
     "./packages/frontend/native",
-    "./packages/frontend/native/schema"
+    "./packages/frontend/native/schema",
+    "./packages/frontend/mobile-native",
 ]
 resolver = "2"
 
 [workspace.dependencies]
 affine_common = { path = "./packages/common/native" }
+criterion2    = { version = "2", default-features = false }
 anyhow        = "1"
 chrono        = "0.4"
 dotenv        = "0.15"

packages/frontend/apps/android/App/app/build.gradle

@@ -1,7 +1,12 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
+
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply from: 'capacitor.build.gradle'
 
 android {
-    namespace "app.affine.pro"
+  namespace "app.affine.pro"
     compileSdk rootProject.ext.compileSdkVersion
     defaultConfig {
         applicationId "app.affine.pro"
@@ -22,6 +27,13 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    ndkVersion "28.0.12433566"
+
+    compileOptions {
+      sourceCompatibility JavaVersion.VERSION_17
+      targetCompatibility JavaVersion.VERSION_17
+    }
 }
 
 repositories {
@@ -40,15 +52,56 @@ dependencies {
     androidTestImplementation "androidx.test.ext:junit:$androidxJunitVersion"
     androidTestImplementation "androidx.test.espresso:espresso-core:$androidxEspressoCoreVersion"
     implementation project(':capacitor-cordova-android-plugins')
+    implementation "net.java.dev.jna:jna:5.15.0@aar"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.9.0"
+    implementation 'androidx.core:core-ktx:1.15.0'
 }
 
-apply from: 'capacitor.build.gradle'
-
 try {
     def servicesJSON = file('google-services.json')
     if (servicesJSON.text) {
         apply plugin: 'com.google.gms.google-services'
     }
-} catch(Exception e) {
+} catch(Exception ignored) {
     logger.info("google-services.json not found, google-services plugin not applied. Push Notifications won't work")
 }
+
+apply plugin: 'org.mozilla.rust-android-gradle.rust-android'
+
+cargo {
+  module  = "../../../../mobile-native"       // Or whatever directory contains your Cargo.toml
+  libname = "affine_mobile_native"          // Or whatever matches Cargo.toml's [package] name.
+  targets = ["arm64"]
+  pythonCommand = "python3.12"
+  targetDirectory = "../../../../../../target"
+  extraCargoBuildArguments = ["--lib"]
+}
+
+kotlin {
+  compilerOptions {
+    apiVersion = KotlinVersion.KOTLIN_2_0
+    jvmTarget = JvmTarget.JVM_17
+  }
+}
+
+afterEvaluate {
+    // The `cargoBuild` task isn't available until after evaluation.
+    android.applicationVariants.configureEach { variant ->
+        def productFlavor = ""
+        variant.productFlavors.each {
+            productFlavor += "${it.name.capitalize()}"
+        }
+        def buildType = "${variant.buildType.name.capitalize()}"
+        tasks["generate${productFlavor}${buildType}Assets"].dependsOn(tasks["cargoBuild"])
+    }
+}
+
+android.applicationVariants.configureEach { variant ->
+    def t = tasks.register("generate${variant.name.capitalize()}UniFFIBindings", Exec) {
+        workingDir "${project.projectDir}"
+        // Runs the bindings generation, note that you must have uniffi-bindgen installed and in your PATH environment variable
+        commandLine 'cargo', 'run', '--bin', 'uniffi-bindgen', 'generate', '--library', "${buildDir}/rustJniLibs/android/arm64-v8a/libaffine_mobile_native.so", '--language', 'kotlin', '--out-dir', "${project.projectDir}/src/main/java"
+        dependsOn("cargoBuild")
+    }
+    variant.javaCompileProvider.get().dependsOn(t)
+}

packages/frontend/apps/android/App/app/capacitor.build.gradle

@@ -10,7 +10,6 @@ android {
 apply from: "../capacitor-cordova-android-plugins/cordova.variables.gradle"
 dependencies {
 
-
 }
 
 

packages/frontend/apps/android/App/app/src/main/java/app/affine/pro/MainActivity.kt

@@ -0,0 +1,26 @@
+package app.affine.pro
+
+import android.os.Build
+import android.os.Bundle
+import android.util.Log
+import androidx.annotation.RequiresApi
+import com.getcapacitor.BridgeActivity
+import uniffi.affine_mobile_native.hashcashMint;
+
+class MainActivity : BridgeActivity() {
+    init {
+        System.loadLibrary("affine_mobile_native")
+    }
+
+    external fun hello(): Long
+
+    @RequiresApi(Build.VERSION_CODES.R)
+    override fun onCreate(savedInstanceState: Bundle?) {
+        val ret = hello()
+        println("ret from rust side $ret")
+        val resource = "hello"
+        val hashed = hashcashMint(resource)
+        println("Hashed string from Rust $hashed")
+        super.onCreate(savedInstanceState)
+    }
+}