refactor(chatbot): enhance EvoaiService with OpenAI integration

- Integrated OpenAI service into the EvoaiService to streamline audio message transcription.
- Updated the constructor to initialize OpenaiService, allowing for direct transcription of audio messages.
- Refactored audio message handling to utilize the OpenAI service for improved reliability and maintainability.
- Adjusted the processing logic to handle transcription results more effectively, ensuring fallback content is provided when transcription fails.

This commit focuses on enhancing the EvoaiService's capabilities by leveraging OpenAI for audio transcription, improving overall service functionality and code structure.

Author: DavidsonGomes

src/api/integrations/chatbot/evoai/services/evoai.service.ts

@@ -9,10 +9,13 @@ import { downloadMediaMessage } from 'baileys';
 import { v4 as uuidv4 } from 'uuid';
 
 import { BaseChatbotService } from '../../base-chatbot.service';
-
+import { OpenaiService } from '../../openai/services/openai.service';
 export class EvoaiService extends BaseChatbotService<Evoai, EvoaiSetting> {
+  private openaiService: OpenaiService;
+
   constructor(waMonitor: WAMonitoringService, prismaRepository: PrismaRepository, configService: ConfigService) {
     super(waMonitor, prismaRepository, 'EvoaiService', configService);
+    this.openaiService = new OpenaiService(waMonitor, prismaRepository, configService);
   }
 
   /**
@@ -42,33 +45,26 @@ export class EvoaiService extends BaseChatbotService<Evoai, EvoaiSetting> {
     try {
       this.logger.debug(`[EvoAI] Processing message with custom process method`);
 
-      // Check if this is an audio message that we should try to transcribe
-      if (msg?.messageType === 'audioMessage' && msg?.message?.audioMessage) {
-        this.logger.debug(`[EvoAI] Detected audio message, attempting transcription`);
+      let contentProcessed = content;
 
+      // Check if this is an audio message that we should try to transcribe
+      if (this.isAudioMessage(content) && msg) {
         try {
-          // Download the audio using the whole msg object
-          const mediaBuffer = await downloadMediaMessage(msg, 'buffer', {});
-          this.logger.debug(`[EvoAI] Downloaded audio: ${mediaBuffer?.length || 0} bytes`);
-
-          // Transcribe with OpenAI's Whisper
-          const transcribedText = await this.speechToText(mediaBuffer);
-          this.logger.debug(`[EvoAI] Transcription result: ${transcribedText || 'FAILED'}`);
-
-          if (transcribedText) {
-            // Use the transcribed text instead of the original content
-            this.logger.debug(`[EvoAI] Using transcribed text: ${transcribedText}`);
-
-            // Call the parent process method with the transcribed text
-            return super.process(instance, remoteJid, bot, session, settings, transcribedText, pushName, msg);
+          this.logger.debug(`[Dify] Downloading audio for Whisper transcription`);
+          const transcription = await this.openaiService.speechToText(msg);
+          if (transcription) {
+            contentProcessed = transcription;
+          } else {
+            contentProcessed = '[Audio message could not be transcribed]';
           }
         } catch (err) {
-          this.logger.error(`[EvoAI] Audio transcription error: ${err}`);
+          this.logger.error(`[Dify] Failed to transcribe audio: ${err}`);
+          contentProcessed = '[Audio message could not be transcribed]';
         }
       }
 
       // For non-audio messages or if transcription failed, proceed normally
-      return super.process(instance, remoteJid, bot, session, settings, content, pushName, msg);
+      return super.process(instance, remoteJid, bot, session, settings, contentProcessed, pushName, msg);
     } catch (error) {
       this.logger.error(`[EvoAI] Error in process: ${error}`);
       return;

src/api/services/channel.service.ts

@@ -45,11 +45,11 @@ export class ChannelStartupService {
     this.chatwootCache,
   );
 
-  public typebotService = new TypebotService(waMonitor, this.configService, this.prismaRepository);
-
   public openaiService = new OpenaiService(waMonitor, this.prismaRepository, this.configService);
 
-  public difyService = new DifyService(waMonitor, this.configService, this.prismaRepository);
+  public typebotService = new TypebotService(waMonitor, this.configService, this.prismaRepository, this.openaiService);
+
+  public difyService = new DifyService(waMonitor, this.configService, this.prismaRepository, this.openaiService);
 
   public setInstance(instance: InstanceDto) {
     this.logger.setInstance(instance.instanceName);