feat(engine): 重构字幕引擎并实现 WebSocket 通信

- 重构了 Gummy 和 Vosk 字幕引擎的代码，提高了可扩展性和可读性
- 合并 Gummy 和 Vosk 引擎为单个可执行文件
- 实现了字幕引擎和主程序之间的 WebSocket 通信，避免了孤儿进程问题

src/main/utils/CaptionEngine.ts

@@ -1,7 +1,8 @@
-import { spawn, exec } from 'child_process'
+import { spawn } from 'child_process'
 import { app } from 'electron'
 import { is } from '@electron-toolkit/utils'
 import path from 'path'
+import net from 'net'
 import { controlWindow } from '../ControlWindow'
 import { allConfig } from './AllConfig'
 import { i18n } from '../i18n'
@@ -11,91 +12,87 @@ export class CaptionEngine {
   appPath: string = ''
   command: string[] = []
   process: any | undefined
-  processStatus: 'running' | 'stopping' | 'stopped' = 'stopped'
+  client: net.Socket | undefined
+  status: 'running' | 'stopping' | 'stopped' = 'stopped'
 
   private getApp(): boolean {
-    if (allConfig.controls.customized && allConfig.controls.customizedApp) {
+    if (allConfig.controls.customized) {
       Log.info('Using customized engine')
       this.appPath = allConfig.controls.customizedApp
       this.command = allConfig.controls.customizedCommand.split(' ')
     }
-    else if (allConfig.controls.engine === 'gummy') {
-      allConfig.controls.customized = false
-      if(!allConfig.controls.API_KEY && !process.env.DASHSCOPE_API_KEY) {
+    else {
+      if(allConfig.controls.engine === 'gummy' && 
+        !allConfig.controls.API_KEY && !process.env.DASHSCOPE_API_KEY
+      ) {
         controlWindow.sendErrorMessage(i18n('gummy.key.missing'))
         return false
       }
-      let gummyName = 'main-gummy'
-      if (process.platform === 'win32') { gummyName += '.exe' }
       this.command = []
       if (is.dev) {
-        this.appPath = path.join(
-          app.getAppPath(), 'engine',
-          'subenv', 'Scripts', 'python.exe'
-        )
-        this.command.push(path.join(
-          app.getAppPath(), 'engine', 'main-gummy.py'
-        ))
+        // this.appPath = path.join(
+        //   app.getAppPath(), 'engine',
+        //   'subenv', 'Scripts', 'python.exe'
+        // )
+        // this.command.push(path.join(
+        //   app.getAppPath(), 'engine', 'main.py'
+        // ))
+        this.appPath = path.join(app.getAppPath(), 'engine', 'dist', 'main.exe')
       }
       else {
-        this.appPath = path.join(
-          process.resourcesPath, 'engine', gummyName
+        this.appPath = path.join(process.resourcesPath, 'engine', 'main.exe')
+      }
+
+      if(allConfig.controls.engine === 'gummy') {
+        this.command.push('-e', 'gummy')
+        this.command.push('-s', allConfig.controls.sourceLang)
+        this.command.push(
+          '-t', allConfig.controls.translation ?
+          allConfig.controls.targetLang : 'none'
         )
+        this.command.push('-a', allConfig.controls.audio ? '1' : '0')
+        if(allConfig.controls.API_KEY) {
+          this.command.push('-k', allConfig.controls.API_KEY)
+        }
       }
-      this.command.push('-s', allConfig.controls.sourceLang)
-      this.command.push(
-        '-t', allConfig.controls.translation ?
-        allConfig.controls.targetLang : 'none'
-      )
-      this.command.push('-a', allConfig.controls.audio ? '1' : '0')
-      if(allConfig.controls.API_KEY) {
-        this.command.push('-k', allConfig.controls.API_KEY)
+      else if(allConfig.controls.engine === 'vosk'){
+        this.command.push('-e', 'vosk')
+        this.command.push('-a', allConfig.controls.audio ? '1' : '0')
+        this.command.push('-m', `"${allConfig.controls.modelPath}"`)        
       }
     }
-    else if(allConfig.controls.engine === 'vosk'){
-      allConfig.controls.customized = false
-      let voskName = 'main-vosk'
-      if (process.platform === 'win32') { voskName += '.exe' }
-      this.command = []
-      if (is.dev) {
-        this.appPath = path.join(
-          app.getAppPath(), 'engine',
-          'subenv', 'Scripts', 'python.exe'
-        )
-        this.command.push(path.join(
-          app.getAppPath(), 'engine', 'main-vosk.py'
-        ))
-      }
-      else {
-        this.appPath = path.join(
-          process.resourcesPath, 'engine', voskName
-        )
-      }
-      this.command.push('-a', allConfig.controls.audio ? '1' : '0')
-      this.command.push('-m', `"${allConfig.controls.modelPath}"`)
-    }
     Log.info('Engine Path:', this.appPath)
     Log.info('Engine Command:', this.command)
     return true
   }
 
+  public connect() {
+    if(this.client) { Log.warn('Client already exists, ignoring...') }
+    Log.info('Connecting to caption engine server...');
+    this.client = net.createConnection({ port: 7070 }, () => {
+      Log.info('Connected to caption engine server');
+    });
+    this.status = 'running'
+  }
+
+  public sendCommand(command: string, content: string = "") {
+    if(this.client === undefined) {
+      Log.error('Client not initialized yet')
+      return
+    }
+    const data = JSON.stringify({command, content})
+    this.client.write(data);
+    Log.info(`Send data to python server: ${data}`);
+  }
+
   public start() {
-    if (this.processStatus !== 'stopped') {
-      Log.warn('Caption engine status is not stopped, cannot start')
+    if (this.status !== 'stopped') {
+      Log.warn('Casption engine is not stopped, current status:', this.status)
       return
     }
     if(!this.getApp()){ return }
 
-    try {
-      this.process = spawn(this.appPath, this.command)
-    }
-    catch (e) {
-      controlWindow.sendErrorMessage(i18n('engine.start.error') + e)
-      Log.error('Error starting engine:', e)
-      return
-    }
-
-    this.processStatus = 'running'
+    this.process = spawn(this.appPath, this.command)
     Log.info('Caption Engine Started, PID:', this.process.pid)
 
     allConfig.controls.engineEnabled = true
@@ -123,7 +120,7 @@ export class CaptionEngine {
     });
 
     this.process.stderr.on('data', (data: any) => {
-      if(this.processStatus === 'stopping') return
+      if(this.status === 'stopping') return
       controlWindow.sendErrorMessage(i18n('engine.error') + data)
       Log.error(`Engine Error: ${data}`);
     });
@@ -135,54 +132,43 @@ export class CaptionEngine {
         allConfig.sendControls(controlWindow.window)
         controlWindow.window.webContents.send('control.engine.stopped')
       }
-      this.processStatus = 'stopped'
+      this.status = 'stopped'
       Log.info(`Engine exited with code ${code}`)
     });
   }
 
   public stop() {
-    if(this.processStatus !== 'running') return
-    if (this.process.pid) {
-      Log.info('Trying to stop process, PID:', this.process.pid)
-      let cmd = `kill ${this.process.pid}`;
-      if (process.platform === "win32") {
-        cmd = `taskkill /pid ${this.process.pid} /t /f`
-      }
-      exec(cmd, (error) => {
-        if (error) {
-          controlWindow.sendErrorMessage(i18n('engine.shutdown.error') + error)
-          Log.error(`Failed to kill process: ${error}`)
-        }
-      })
-    }
-    else {
-      this.process = undefined;
-      allConfig.controls.engineEnabled = false
-      if(controlWindow.window){
-        allConfig.sendControls(controlWindow.window)
-        controlWindow.window.webContents.send('control.engine.stopped')
-      }
-      this.processStatus = 'stopped'
-      Log.info('Process PID undefined, caption engine process stopped')
+    if(this.status !== 'running'){
+      Log.warn('Engine is not running, current status:', this.status)
       return
     }
-    this.processStatus = 'stopping'
-    Log.info('Caption engine process stopping')
+    this.sendCommand('stop')
+    if(this.client){
+      this.client.destroy()
+      this.client = undefined
+    }
+    this.status = 'stopping'
+    Log.info('Caption engine process stopping...')
   }
 }
 
 function handleEngineData(data: any) {
-  if(data.command === 'caption') {
+  if(data.command === 'ready'){
+    captionEngine.connect()
+  }
+  else if(data.command === 'caption') {
     allConfig.updateCaptionLog(data);
   }
   else if(data.command === 'print') {
-    Log.info('Engine print:', data.content)
+    console.log(data.content)
+    // Log.info('Engine Print:', data.content)
   }
   else if(data.command === 'info') {
-    Log.info('Engine info:', data.content)
+    Log.info('Engine Info:', data.content)
   }
   else if(data.command === 'usage') {
-    Log.info('Caption engine usage: ', data.content)
+    console.error(data.content)
+    // Log.info('Gummy Engine Usage: ', data.content)
   }
 }