refactor(AsrHelper): 优化语音识别连接重连机制

- 移除未使用的 import 语句
- 添加指数退避算法计算重连延迟时间
- 引入最大重连尝试次数限制防止无限重连
- 添加重连状态管理变量控制重连行为
- 实现重连状态重置功能
- 优化网络可用时的重连逻辑
- 改进连接失败时的状态清理
- 添加详细的重连日志记录

app/src/main/java/com/nova/brain/glass/helper/AsrHelper.kt

@@ -1,6 +1,5 @@
 package com.nova.brain.glass.helper
 
-import android.R.attr.action
 import android.app.AlertDialog
 import android.content.Context
 import android.content.Intent
@@ -13,6 +12,7 @@ import android.os.Handler
 import android.os.Looper
 import android.util.Log
 import android.view.LayoutInflater
+import androidx.core.graphics.toColorInt
 import com.blankj.utilcode.util.Utils
 import com.nova.brain.glass.BuildConfig
 import com.nova.brain.glass.R
@@ -25,9 +25,7 @@ import com.rokid.online.speech.TtsClient
 import com.rokid.online.speech.open.AndroidPcmTtsStreamPlayer
 import com.rokid.online.speech.open.OpenSdkAudioSource
 import com.xuqm.base.common.AppManager
-import com.xuqm.base.extensions.showMessage
 import kotlin.system.exitProcess
-import androidx.core.graphics.toColorInt
 
 object AsrHelper : OfflineCmdListener {
 
@@ -60,12 +58,18 @@ object AsrHelper : OfflineCmdListener {
     private var isTtsConnecting = false
     private var pendingStartMic = false
     private var isClosed = false
+    private var asrReconnectAttempt = 0
+    private var ttsReconnectAttempt = 0
+    private var asrReconnectPaused = false
+    private var ttsReconnectPaused = false
     private var connectivityManager: ConnectivityManager? = null
     private var networkCallbackRegistered = false
 
     private const val WAKE_RESPONSE = "在呢，您请说"
     private const val LISTENING_TIMEOUT_MS = 30_000L
-    private const val RECONNECT_DELAY_MS = 3_000L
+    private const val BASE_RECONNECT_DELAY_MS = 3_000L
+    private const val MAX_RECONNECT_DELAY_MS = 30_000L
+    private const val MAX_RECONNECT_ATTEMPTS = 5
 
     private val mainHandler = Handler(Looper.getMainLooper())
     private var listeningDialog: AlertDialog? = null
@@ -100,6 +104,7 @@ object AsrHelper : OfflineCmdListener {
     private val networkCallback = object : ConnectivityManager.NetworkCallback() {
         override fun onAvailable(network: Network) {
             Log.d(TAG, "Network available, reconnect speech channels if needed")
+            resetReconnectState()
             reconnectAllIfNeeded(immediate = true)
             dismissNoNetworkDialog()
         }
@@ -161,6 +166,7 @@ object AsrHelper : OfflineCmdListener {
         registerNetworkCallback()
 
         // 自动建立 ASR / TTS 连接
+        resetReconnectState()
         asrConnect()
         ttsConnect()
 
@@ -197,6 +203,9 @@ object AsrHelper : OfflineCmdListener {
 
     private fun asrStartMic() {
         if (!isConnected) {
+            if (asrReconnectPaused) {
+                resetAsrReconnectState()
+            }
             pendingStartMic = true
             asrConnect()
             Log.w(TAG, "ASR not connected, queue startMic after reconnect")
@@ -224,23 +233,38 @@ object AsrHelper : OfflineCmdListener {
         mainHandler.removeCallbacks(listeningTimeoutRunnable)
     }
 
-    private fun scheduleAsrReconnect(delayMs: Long = RECONNECT_DELAY_MS) {
+    private fun scheduleAsrReconnect(delayMs: Long? = null) {
         if (!shouldReconnectAsr()) return
+        if (asrReconnectAttempt >= MAX_RECONNECT_ATTEMPTS) {
+            asrReconnectPaused = true
+            pendingStartMic = false
+            Log.w(TAG, "ASR reconnect paused after $MAX_RECONNECT_ATTEMPTS failures")
+            return
+        }
+        asrReconnectAttempt += 1
+        val actualDelayMs = delayMs ?: calculateReconnectDelay(asrReconnectAttempt)
         mainHandler.removeCallbacks(asrReconnectRunnable)
-        mainHandler.postDelayed(asrReconnectRunnable, delayMs)
+        mainHandler.postDelayed(asrReconnectRunnable, actualDelayMs)
-        Log.d(TAG, "ASR reconnect scheduled in ${delayMs}ms")
+        Log.d(TAG, "ASR reconnect scheduled in ${actualDelayMs}ms, attempt=$asrReconnectAttempt")
     }
 
-    private fun scheduleTtsReconnect(delayMs: Long = RECONNECT_DELAY_MS) {
+    private fun scheduleTtsReconnect(delayMs: Long? = null) {
         if (!shouldReconnectTts()) return
+        if (ttsReconnectAttempt >= MAX_RECONNECT_ATTEMPTS) {
+            ttsReconnectPaused = true
+            Log.w(TAG, "TTS reconnect paused after $MAX_RECONNECT_ATTEMPTS failures")
+            return
+        }
+        ttsReconnectAttempt += 1
+        val actualDelayMs = delayMs ?: calculateReconnectDelay(ttsReconnectAttempt)
         mainHandler.removeCallbacks(ttsReconnectRunnable)
-        mainHandler.postDelayed(ttsReconnectRunnable, delayMs)
+        mainHandler.postDelayed(ttsReconnectRunnable, actualDelayMs)
-        Log.d(TAG, "TTS reconnect scheduled in ${delayMs}ms")
+        Log.d(TAG, "TTS reconnect scheduled in ${actualDelayMs}ms, attempt=$ttsReconnectAttempt")
     }
 
     private fun reconnectAllIfNeeded(immediate: Boolean = false) {
         if (!isNetworkAvailable()) return
-        val delayMs = if (immediate) 0L else RECONNECT_DELAY_MS
+        val delayMs = if (immediate) 0L else null
         if (!isConnected) {
             scheduleAsrReconnect(delayMs)
         }
@@ -250,11 +274,33 @@ object AsrHelper : OfflineCmdListener {
     }
 
     private fun shouldReconnectAsr(): Boolean {
-        return !isClosed && !isConnected && !isAsrConnecting && isNetworkAvailable()
+        return !isClosed && !isConnected && !isAsrConnecting && !asrReconnectPaused && isNetworkAvailable()
     }
 
     private fun shouldReconnectTts(): Boolean {
-        return !isClosed && !isTtsConnected && !isTtsConnecting && isNetworkAvailable()
+        return !isClosed && !isTtsConnected && !isTtsConnecting && !ttsReconnectPaused && isNetworkAvailable()
+    }
+
+    private fun calculateReconnectDelay(attempt: Int): Long {
+        val factor = 1L shl (attempt - 1).coerceAtLeast(0)
+        return (BASE_RECONNECT_DELAY_MS * factor).coerceAtMost(MAX_RECONNECT_DELAY_MS)
+    }
+
+    private fun resetAsrReconnectState() {
+        asrReconnectAttempt = 0
+        asrReconnectPaused = false
+        mainHandler.removeCallbacks(asrReconnectRunnable)
+    }
+
+    private fun resetTtsReconnectState() {
+        ttsReconnectAttempt = 0
+        ttsReconnectPaused = false
+        mainHandler.removeCallbacks(ttsReconnectRunnable)
+    }
+
+    private fun resetReconnectState() {
+        resetAsrReconnectState()
+        resetTtsReconnectState()
     }
 
     private fun getContext(): Context = Utils.getApp()
@@ -377,7 +423,7 @@ object AsrHelper : OfflineCmdListener {
             override fun onOpen() {
                 isConnected = true
                 isAsrConnecting = false
-                mainHandler.removeCallbacks(asrReconnectRunnable)
+                resetAsrReconnectState()
                 Log.d(TAG, "ASR websocket open")
                 if (pendingStartMic) {
                     asrStartMic()
@@ -421,7 +467,10 @@ object AsrHelper : OfflineCmdListener {
                             when (action.name) {
                                 "goToDecisionCenter" -> onGoToDecisionCenter?.invoke(action)
                                 "goToTaskCenter" -> onGoToTaskCenter?.invoke(action)
-                                "openTaskDetail", "openTaskDetailWithFilter" -> onOpenTaskDetail?.invoke(action)
+                                "openTaskDetail", "openTaskDetailWithFilter" -> onOpenTaskDetail?.invoke(
+                                    action
+                                )
+
                                 else -> Log.d(TAG, "unhandled action: $action")
                             }
                         },
@@ -438,6 +487,10 @@ object AsrHelper : OfflineCmdListener {
                 isConnected = false
                 isAsrConnecting = false
                 isMicRunning = false
+                if (pendingStartMic) {
+                    Log.w(TAG, "ASR pending startMic cleared after websocket failure")
+                }
+                pendingStartMic = false
                 dismissListeningDialog()
                 scheduleAsrReconnect()
             }
@@ -446,6 +499,7 @@ object AsrHelper : OfflineCmdListener {
                 isConnected = false
                 isAsrConnecting = false
                 isMicRunning = false
+                pendingStartMic = false
                 dismissListeningDialog()
                 Log.d(TAG, "ASR closed code=$code reason=$reason")
                 scheduleAsrReconnect()
@@ -458,7 +512,7 @@ object AsrHelper : OfflineCmdListener {
             override fun onOpen() {
                 isTtsConnected = true
                 isTtsConnecting = false
-                mainHandler.removeCallbacks(ttsReconnectRunnable)
+                resetTtsReconnectState()
                 Log.d(TAG, "TTS websocket open")
             }
 
@@ -470,7 +524,7 @@ object AsrHelper : OfflineCmdListener {
             override fun onError(code: Int, message: String) {
                 isTtsConnected = false
                 isTtsConnecting = false
-                Log.e(TAG, "TTS error code=$code msg=$message, fallback to mic")
+                Log.e(TAG, "TTS error code=$code msg=$message")
                 scheduleTtsReconnect()
                 asrStartMic()
             }
@@ -497,6 +551,7 @@ object AsrHelper : OfflineCmdListener {
             showListeningDialog()
             restartListeningTimeout()
             pendingStartMic = true
+            resetReconnectState()
             if (isTtsConnected) {
                 tts?.speak(WAKE_RESPONSE)
             } else {
@@ -519,6 +574,7 @@ object AsrHelper : OfflineCmdListener {
                     activity.finishAffinity()
                     exitProcess(0)
                 }
+
                 "返回", "退回" -> {
                     activity.startActivity(
                         Intent(activity, WelcomeActivity::class.java).apply {
@@ -556,6 +612,11 @@ object AsrHelper : OfflineCmdListener {
         isAsrConnecting = false
         isTtsConnected = false
         isTtsConnecting = false
+        asrReconnectAttempt = 0
+        ttsReconnectAttempt = 0
+        asrReconnectPaused = false
+        ttsReconnectPaused = false
+        pendingStartMic = false
         Log.d(TAG, "AsrHelper closed")
     }
 }