Add basic WebSocket connectivity with Dero node.

- Created a new stargate module that will contain the code to connect with the Dero nodes. This stargate module will use the ktor library, which is a multiplatform networking library that works on both Android and iOS.
- Added a bassic connectivity with a Dero node. It just connects with the node, listens for messages, and prints them out to the standard output.
- Introduced the ScreenModel library and created a basic ImportAccountScreenModel. ScreenModel classes serve to host all the logic for their corresponding screens.
- Added the Internet permssion to the Android app, to be able to connect with the internet.
- Removed the Desktop target. After discussing with Ken, we decided that investing on a Desktop app does not make sense. We will focus on Android and iOS only.

composeApp/build.gradle.kts

@@ -1,5 +1,3 @@
-import org.jetbrains.compose.desktop.application.dsl.TargetFormat
-
 plugins {
     alias(libs.plugins.kotlinMultiplatform)
     alias(libs.plugins.androidApplication)
@@ -15,8 +13,6 @@ kotlin {
         }
     }
     
-    jvm("desktop")
-    
     listOf(
         iosX64(),
         iosArm64(),
@@ -29,14 +25,17 @@ kotlin {
     }
     
     sourceSets {
-        val desktopMain by getting
+        val androidMain by getting {
-        
+            dependencies {
-        androidMain.dependencies {
                 implementation(libs.compose.ui.tooling.preview)
                 implementation(libs.androidx.activity.compose)
             }
+        }
+
+        val commonMain by getting {
             commonMain.dependencies {
                 implementation(projects.shared.preferences)
+                implementation(projects.shared.stargate)
 
                 implementation(compose.components.resources)
                 implementation(compose.components.uiToolingPreview)
@@ -44,11 +43,21 @@ kotlin {
                 implementation(compose.material3)
                 implementation(compose.runtime)
                 implementation(compose.ui)
+                implementation(libs.coroutines.core)
                 implementation(libs.voyager.navigator)
-            implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.4.1")
+                implementation(libs.voyager.screenmodel)
             }
-        desktopMain.dependencies {
+        }
-            implementation(compose.desktop.currentOs)
+
+        val iosX64Main by getting
+        val iosArm64Main by getting
+        val iosSimulatorArm64Main by getting
+        val iosMain by creating {
+            dependsOn(commonMain)
+            iosX64Main.dependsOn(this)
+            iosArm64Main.dependsOn(this)
+            iosSimulatorArm64Main.dependsOn(this)
+            dependencies {}
         }
     }
 }
@@ -86,15 +95,3 @@ android {
         debugImplementation(libs.compose.ui.tooling)
     }
 }
-
-compose.desktop {
-    application {
-        mainClass = "MainKt"
-
-        nativeDistributions {
-            targetFormats(TargetFormat.Dmg, TargetFormat.Msi, TargetFormat.Deb)
-            packageName = "net.agorise.kee"
-            packageVersion = "1.0.0"
-        }
-    }
-}

composeApp/src/androidMain/AndroidManifest.xml

@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <uses-permission android:name="android.permission.INTERNET" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"

composeApp/src/commonMain/kotlin/net/agorise/kee/ui/screen/importaccount/ImportAccountScreen.kt

@@ -7,6 +7,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
+import cafe.adriel.voyager.core.model.rememberScreenModel
 import cafe.adriel.voyager.core.screen.Screen
 import cafe.adriel.voyager.navigator.LocalNavigator
 import kee.composeapp.generated.resources.Res
@@ -22,9 +23,10 @@ import ui.theme.KeeTheme
 private const val RECOVERY_WORDS_COUNT = 25
 
 class ImportAccountScreen : Screen {
-    
     @Composable
     override fun Content() = KeeTheme {
+        val screenModel = rememberScreenModel { ImportAccountScreenModel() }
+
         ImportAccountScreenContent()
     }
 }

composeApp/src/commonMain/kotlin/net/agorise/kee/ui/screen/importaccount/ImportAccountScreenModel.kt

@@ -0,0 +1,23 @@
+package net.agorise.kee.ui.screen.importaccount
+
+import cafe.adriel.voyager.core.model.ScreenModel
+import cafe.adriel.voyager.core.model.screenModelScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.IO
+import kotlinx.coroutines.launch
+import net.agorise.shared.stargate.Bridge
+
+class ImportAccountScreenModel : ScreenModel {
+    private val bridge = Bridge()
+
+    init {
+        screenModelScope.launch(Dispatchers.IO) {
+            bridge.start()
+        }
+    }
+
+    override fun onDispose() {
+        super.onDispose()
+        bridge.stop()
+    }
+}

composeApp/src/desktopMain/kotlin/net/agorise/kee/Platform.jvm.kt

@@ -1,7 +0,0 @@
-package net.agorise.kee
-
-class JVMPlatform: Platform {
-    override val name: String = "Java ${System.getProperty("java.version")}"
-}
-
-actual fun getPlatform(): Platform = JVMPlatform()

composeApp/src/desktopMain/kotlin/net/agorise/kee/main.kt

@@ -1,20 +0,0 @@
-package net.agorise.kee
-
-import androidx.compose.ui.unit.DpSize
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.window.Window
-import androidx.compose.ui.window.WindowPosition
-import androidx.compose.ui.window.application
-import androidx.compose.ui.window.rememberWindowState
-import cafe.adriel.voyager.navigator.Navigator
-import net.agorise.kee.ui.screen.home.HomeScreen
-
-fun main() = application {
-    val state = rememberWindowState(
-        size = DpSize(420.dp, 880.dp),
-        position = WindowPosition(300.dp, 300.dp)
-    )
-    Window(title = "Kee", onCloseRequest = ::exitApplication, state = state) {
-        Navigator(HomeScreen())
-    }
-}

gradle/libs.versions.toml

@@ -4,9 +4,11 @@ android-compileSdk = "34"
 android-minSdk = "26"
 android-targetSdk = "34"
 androidx-activityCompose = "1.8.2"
-compose = "1.6.2"
+compose = "1.6.4"
 compose-plugin = "1.6.0"
+coroutines = "1.8.0"
 kotlin = "1.9.22"
+ktor = "2.3.9"
 multiplatform-settings = "1.1.1"
 voyager = "1.0.0"
 
@@ -14,8 +16,13 @@ voyager = "1.0.0"
 androidx-activity-compose = { group = "androidx.activity", name ="activity-compose", version.ref = "androidx-activityCompose" }
 compose-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling", version.ref = "compose" }
 compose-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview", version.ref = "compose" }
+coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "coroutines" }
+ktor-client-cio = { group = "io.ktor", name = "ktor-client-cio", version.ref = "ktor" }
+ktor-client-core = { group = "io.ktor", name = "ktor-client-core", version.ref = "ktor" }
+ktor-client-websockets = { group = "io.ktor", name = "ktor-client-websockets", version.ref = "ktor" }
 multiplatform-settings = { group="com.russhwolf", name = "multiplatform-settings-no-arg", version.ref = "multiplatform-settings" }
 voyager-navigator = { group = "cafe.adriel.voyager", name = "voyager-navigator", version.ref = "voyager" }
+voyager-screenmodel = { group = "cafe.adriel.voyager", name = "voyager-screenmodel", version.ref = "voyager" }
 
 [plugins]
 androidApplication = { id = "com.android.application", version.ref = "agp" }

settings.gradle.kts

@@ -20,3 +20,4 @@ dependencyResolutionManagement {
 
 include(":composeApp")
 include(":shared:preferences")
+include(":shared:stargate")

shared/preferences/build.gradle.kts

@@ -12,8 +12,6 @@ kotlin {
         }
     }
 
-    jvm()
-
     iosX64()
     iosArm64()
     iosSimulatorArm64()

shared/stargate/build.gradle.kts

@@ -0,0 +1,40 @@
+plugins {
+    alias(libs.plugins.kotlinMultiplatform)
+    alias(libs.plugins.androidLibrary)
+}
+
+kotlin {
+    androidTarget {
+        compilations.all {
+            kotlinOptions {
+                jvmTarget = "11"
+            }
+        }
+    }
+
+    iosX64()
+    iosArm64()
+    iosSimulatorArm64()
+
+    sourceSets {
+        commonMain.dependencies {
+            implementation(libs.ktor.client.cio)
+            implementation(libs.ktor.client.core)
+            implementation(libs.ktor.client.websockets)
+        }
+    }
+}
+
+android {
+    namespace = "net.agorise.shared.stargate"
+    compileSdk = libs.versions.android.compileSdk.get().toInt()
+
+    defaultConfig {
+        minSdk = libs.versions.android.minSdk.get().toInt()
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+}

shared/stargate/src/commonMain/kotlin/net/agorise/shared/stargate/Bridge.kt

@@ -0,0 +1,33 @@
+package net.agorise.shared.stargate
+
+import io.ktor.client.HttpClient
+import io.ktor.client.engine.cio.CIO
+import io.ktor.client.plugins.websocket.DefaultClientWebSocketSession
+import io.ktor.client.plugins.websocket.WebSockets
+import io.ktor.client.plugins.websocket.webSocket
+import io.ktor.http.HttpMethod
+import io.ktor.websocket.Frame
+import io.ktor.websocket.readText
+import kotlinx.coroutines.flow.receiveAsFlow
+
+class Bridge {
+    private val client: HttpClient = HttpClient(CIO) { install(WebSockets) }
+
+    suspend fun start() {
+        client.webSocket(method = HttpMethod.Get, host = "node.derofoundation.org", port = 11012, path = "/ws") {
+            outputMessages()
+        }
+    }
+
+    fun stop() {
+        client.close()
+    }
+
+    private suspend fun DefaultClientWebSocketSession.outputMessages() {
+        incoming.receiveAsFlow().collect { message ->
+            (message as? Frame.Text)?.let { textFrame ->
+                println(textFrame.readText())
+            }
+        }
+    }
+}