feat: chime sdk api rewrite (#14)

## Key Changes by Category

1. API Architecture (Core Refactoring)
  - Before: Global functions (joinMeeting(), leaveMeeting(), etc.) + singleton pattern with global variables
  - After: Instance-based `ChimeSDK` class with:
    - `ChimeSDK.createSession()` — static factory to initialize
    - `joinMeeting()` — instance method to connect
    - All platform-specific logic encapsulated within the instance

2. Common API Changes (ChimeSDK.kt)
  - Converted from `expect fun` declarations to expect class `ChimeSDK`
  - `joinMeeting()` signature simplified: removed many optional parameters, consolidated callbacks
  - New `ChimeMessage` data class added (replaces `TextMessage`)
  
## Migration Impact (for library consumers)

This is a breaking change. Code using the old API must update:

Before:

```Kotlin
joinMeeting(meetingId, ..., onLocalVideoTileAdded = { tileId -> ... })
```

After:

```Kotlin
val chimeSDK = ChimeSDK.createSession(meetingId, ...)
chimeSDK.joinMeeting(realTimeListener, onLocalVideoTileAdded = { tileId -> ... })
```

Author: Taz03

chime-sdk/build.gradle.kts

@@ -12,7 +12,7 @@ plugins {
 }
 
 group = "com.wannaverse"
-version = "0.3.1"
+version = "0.4.0"
 
 kotlin {
     androidTarget {
@@ -39,19 +39,6 @@ kotlin {
     val simSlice = "ios-arm64_x86_64-simulator"
     val devSlice = "ios-arm64"
 
-    iosX64 {
-        compilations["main"].cinterops {
-            val AmazonChimeSDK by creating {
-                defFile(project.file("src/nativeInterop/cinterop/AmazonChimeSDK.def"))
-                packageName("cocoapods.AmazonChimeSDK")
-                compilerOpts(
-                    "-fmodules",
-                    "-F", "$podsDir/AmazonChimeSDK/AmazonChimeSDK.xcframework/$simSlice",
-                    "-F", "$podsDir/AmazonChimeSDKMedia/AmazonChimeSDKMedia.xcframework/$simSlice"
-                )
-            }
-        }
-    }
     iosArm64 {
         compilations["main"].cinterops {
             val AmazonChimeSDK by creating {

chime-sdk/chime_sdk.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
     spec.name                     = 'chime_sdk'
-    spec.version                  = '0.3.1'
+    spec.version                  = '0.4.0'
     spec.homepage                 = 'https://github.com/WannaverseOfficial/kmp-chime-sdk'
     spec.source                   = { :http=> ''}
     spec.authors                  = ''

…chimesdk/MeetingActiveSpeakerObserver.kt …se/chimesdk/ActiveSpeakerObserverImpl.ktchime-sdk/src/androidMain/kotlin/com/wannaverse/chimesdk/MeetingActiveSpeakerObserver.kt renamed to chime-sdk/src/androidMain/kotlin/com/wannaverse/chimesdk/ActiveSpeakerObserverImpl.kt chime-sdk/src/androidMain/kotlin/com/wannaverse/chimesdk/MeetingActiveSpeakerObserver.kt renamed to chime-sdk/src/androidMain/kotlin/com/wannaverse/chimesdk/ActiveSpeakerObserverImpl.kt

@@ -3,20 +3,16 @@ package com.wannaverse.chimesdk
 import com.amazonaws.services.chime.sdk.meetings.audiovideo.AttendeeInfo
 import com.amazonaws.services.chime.sdk.meetings.audiovideo.audio.activespeakerdetector.ActiveSpeakerObserver
 
-object MeetingActiveSpeakerObserver : ActiveSpeakerObserver {
-    private const val SPEAKING_THRESHOLD = 0.05
-    var onActiveSpeakersChanged: ((Set<String>) -> Unit)? = null
+private const val SPEAKING_THRESHOLD = 0.05
 
+class ActiveSpeakerObserverImpl(val onActiveSpeakersChanged: (Set<String>) -> Unit) : ActiveSpeakerObserver {
     override val scoreCallbackIntervalMs: Int = 500
 
     override fun onActiveSpeakerDetected(attendeeInfo: Array<AttendeeInfo>) {}
 
-    override fun onActiveSpeakerScoreChanged(scores: Map<AttendeeInfo, Double>) {
-        if (scores.isEmpty()) return
-        val activeSpeakers = scores
+    override fun onActiveSpeakerScoreChanged(scores: Map<AttendeeInfo, Double>) =
+        scores.mapKeys { (attendee) -> attendee.externalUserId }
             .filter { (_, score) -> score > SPEAKING_THRESHOLD }
-            .map { (attendee, _) -> attendee.externalUserId }
-            .toSet()
-        onActiveSpeakersChanged?.invoke(activeSpeakers)
-    }
+            .keys
+            .let(onActiveSpeakersChanged)
 }

chime-sdk/src/androidMain/kotlin/com/wannaverse/chimesdk/AudioVideoObserverImpl.kt

@@ -2,20 +2,20 @@ package com.wannaverse.chimesdk
 
 import com.amazonaws.services.chime.sdk.meetings.audiovideo.AudioVideoObserver
 import com.amazonaws.services.chime.sdk.meetings.audiovideo.video.RemoteVideoSource
+import com.amazonaws.services.chime.sdk.meetings.session.MeetingSession
 import com.amazonaws.services.chime.sdk.meetings.session.MeetingSessionStatus
 import com.amazonaws.services.chime.sdk.meetings.session.MeetingSessionStatusCode
 
 class AudioVideoObserverImpl(
+    private val meetingSession: MeetingSession,
     private val onConnectionStatusChanged: (ConnectionStatus) -> Unit,
     private val onRemoteVideoAvailable: (isAvailable: Boolean, sourceCount: Int) -> Unit,
     private val onCameraSendAvailable: (available: Boolean) -> Unit,
     private val onSessionError: (message: String, isRecoverable: Boolean) -> Unit,
     private val onVideoNeedsRestart: () -> Unit,
     private val isJoiningOnMute: Boolean
 ) : AudioVideoObserver {
-
     private var isVideoSessionActive = false
-    private var hasReportedPoorConnection = false
     private var shouldRestartVideoAfterReconnect = false
 
     override fun onAudioSessionStartedConnecting(reconnecting: Boolean) {
@@ -30,9 +30,7 @@ class AudioVideoObserverImpl(
     override fun onAudioSessionStarted(reconnecting: Boolean) {
         onConnectionStatusChanged(ConnectionStatus.CONNECTED)
 
-        if (!reconnecting && isJoiningOnMute) {
-            meetingSession?.audioVideo?.realtimeLocalMute()
-        }
+        if (!reconnecting && isJoiningOnMute) meetingSession.audioVideo.realtimeLocalMute()
 
         if (reconnecting && shouldRestartVideoAfterReconnect && !isVideoSessionActive) {
             onVideoNeedsRestart()
@@ -67,15 +65,11 @@ class AudioVideoObserverImpl(
     }
 
     override fun onConnectionBecamePoor() {
-        hasReportedPoorConnection = true
         onConnectionStatusChanged(ConnectionStatus.POOR_CONNECTION)
     }
 
     override fun onConnectionRecovered() {
-        if (hasReportedPoorConnection) {
-            hasReportedPoorConnection = false
-            onConnectionStatusChanged(ConnectionStatus.CONNECTED)
-        }
+        onConnectionStatusChanged(ConnectionStatus.CONNECTED)
     }
 
     override fun onVideoSessionStartedConnecting() {}