new: implement web audio player with support for js and wasmJs platforms

core/audioplayer/build.gradle.kts

@@ -48,6 +48,15 @@ kotlin {
             implementation(project.dependencies.platform(libs.koin.bom))
             implementation(libs.koin.core)
         }
+        // webMain is the js + wasmJs intermediate source set from the default hierarchy template.
+        webMain.dependencies {
+            // Browser audio (HTMLAudioElement, document) for js + wasmJs
+            implementation(libs.kotlinx.browser)
+        }
+        wasmJsMain {
+            // HTMLAudioElement interop on Wasm requires this opt-in.
+            languageSettings.optIn("kotlin.js.ExperimentalWasmJsInterop")
+        }
         commonTest.dependencies {
             implementation(libs.kotlin.test)
         }

core/audioplayer/src/jsMain/kotlin/fr/ajaury/gwenedeg/player/JsAudioPlayer.kt

@@ -1,23 +0,0 @@
-package fr.ajaury.gwenedeg.player
-
-class JsAudioPlayer : AudioPlayer {
-    override fun play() {
-        TODO("Not yet implemented")
-    }
-
-    override fun pause() {
-        TODO("Not yet implemented")
-    }
-
-    override fun stop() {
-        TODO("Not yet implemented")
-    }
-
-    override fun release() {
-        TODO("Not yet implemented")
-    }
-
-    override fun load(uri: String) {
-        TODO("Not yet implemented")
-    }
-}

core/audioplayer/src/jsMain/kotlin/fr/ajaury/gwenedeg/player/di/AudioPlayerModule.js.kt

@@ -1,6 +0,0 @@
-package fr.ajaury.gwenedeg.player.di
-
-import org.koin.core.module.Module
-
-actual val audioPlayerModule: Module
-    get() = TODO("Not yet implemented")

core/audioplayer/src/wasmJsMain/kotlin/fr/ajaury/gwenedeg/player/WasmAudioPlayer.kt

@@ -1,23 +0,0 @@
-package fr.ajaury.gwenedeg.player
-
-class WasmAudioPlayer : AudioPlayer {
-    override fun play() {
-        TODO("Not yet implemented")
-    }
-
-    override fun pause() {
-        TODO("Not yet implemented")
-    }
-
-    override fun stop() {
-        TODO("Not yet implemented")
-    }
-
-    override fun release() {
-        TODO("Not yet implemented")
-    }
-
-    override fun load(uri: String) {
-        TODO("Not yet implemented")
-    }
-}

core/audioplayer/src/wasmJsMain/kotlin/fr/ajaury/gwenedeg/player/di/AudioPlayerModule.wasmJs.kt

@@ -1,6 +0,0 @@
-package fr.ajaury.gwenedeg.player.di
-
-import org.koin.core.module.Module
-
-actual val audioPlayerModule: Module
-    get() = TODO("Not yet implemented")

core/audioplayer/src/webMain/kotlin/fr/ajaury/gwenedeg/player/WebAudioPlayer.kt

@@ -0,0 +1,32 @@
+package fr.ajaury.gwenedeg.player
+
+import kotlinx.browser.document
+import org.w3c.dom.HTMLAudioElement
+
+class WebAudioPlayer : AudioPlayer {
+    private var audio: HTMLAudioElement? = null
+
+    override fun load(uri: String) {
+        audio = (document.createElement("audio") as HTMLAudioElement).apply {
+            src = uri
+        }
+    }
+
+    override fun play() {
+        audio?.play()
+    }
+
+    override fun pause() {
+        audio?.pause()
+    }
+
+    override fun stop() {
+        audio?.pause()
+        audio?.currentTime = 0.0
+    }
+
+    override fun release() {
+        audio?.pause()
+        audio = null
+    }
+}

core/audioplayer/src/webMain/kotlin/fr/ajaury/gwenedeg/player/WebAudioSessionManager.kt

@@ -0,0 +1,9 @@
+package fr.ajaury.gwenedeg.player
+
+class WebAudioSessionManager : AudioSessionManager {
+    override fun activate() {
+    }
+
+    override fun deactivate() {
+    }
+}

core/audioplayer/src/webMain/kotlin/fr/ajaury/gwenedeg/player/di/AudioPlayerModule.web.kt

@@ -0,0 +1,13 @@
+package fr.ajaury.gwenedeg.player.di
+
+import fr.ajaury.gwenedeg.player.AudioPlayer
+import fr.ajaury.gwenedeg.player.AudioSessionManager
+import fr.ajaury.gwenedeg.player.WebAudioPlayer
+import fr.ajaury.gwenedeg.player.WebAudioSessionManager
+import org.koin.core.module.Module
+import org.koin.dsl.module
+
+actual val audioPlayerModule: Module = module {
+    single<AudioPlayer> { WebAudioPlayer() }
+    single<AudioSessionManager> { WebAudioSessionManager() }
+}

gradle/libs.versions.toml

@@ -11,6 +11,7 @@ navigation3 = "1.1.1"
 composeMultiplatform = "1.11.1"
 kotlin = "2.4.0"
 kotlinWrappers = "2026.6.3"
+kotlinxBrowser = "0.5.0"
 kotlinxCoroutines = "1.11.0"
 kotlinSerialization = "2.4.0"
 material3 = "1.11.0-alpha07"
@@ -31,6 +32,7 @@ koin-compose-viewmodel = { module = "io.insert-koin:koin-compose-viewmodel" }
 koin-core = { module = "io.insert-koin:koin-core" }
 koin-core-viewmodel = { module = "io.insert-koin:koin-core-viewmodel" }
 kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
+kotlinx-browser = { module = "org.jetbrains.kotlinx:kotlinx-browser", version.ref = "kotlinxBrowser" }
 kotlinx-coroutinesSwing = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-swing", version.ref = "kotlinxCoroutines" }
 lifecycle-runtimeCompose = { module = "org.jetbrains.androidx.lifecycle:lifecycle-runtime-compose", version.ref = "androidxLifecycle" }
 lifecycle-viewmodelCompose = { module = "org.jetbrains.androidx.lifecycle:lifecycle-viewmodel-compose", version.ref = "androidxLifecycle" }