Go HTTP Audio Server

This is a rudimentary Go HTTP server for recording, transcribing, and translating audio.

Features

• Start audio recording using pw-record.
• Stop audio recording.
• Transcribe audio using the OpenAI Whisper API.
• Translate audio using the OpenAI ChatCompletion API.

Requirements

• Linux
• Go
• pw-record (PipeWire audio recorder)
• OpenAI API Key (for Whisper and ChatCompletion models)

Installation

1. Clone the repository.

2. Install dependencies:

   go mod tidy

3. Set up your environment variables:

   • Create a .env file in the project root.

   • Add your OpenAI API keys to the .env file:

     OPENAI_WHISPER_API_KEY=<YOUR_OPENAI_WHISPER_API_KEY>
     OPENAI_TRANSCRIBE_API_KEY=<YOUR_OPENAI_CHATCOMPLETION_API_KEY>
     

Usage

1. Run the server:

   go run main.go

   The server will start on port 5757.
2. API Endpoints:
   • POST /audio/start: Starts audio recording.
   • Response:

     • {"id": "<process_id>", "message": "Recording started", "file": "<output_file>"}

   • POST /audio/stop?id=<process_id>: Stops audio recording.
     • Query Parameter:
       • id: The process ID returned by /audio/start.
     • Response:

       • {"message": "Recording stopped", "file": "<file_name>"}

   • POST /audio/transcribe?filename=<filename>&lang=<language_code>: Transcribes audio using OpenAI Whisper.
     • Query Parameters:
       • filename: The path to the audio file to transcribe.
       • lang (Optional): The language of the audio (e.g., en for English, ru for Russian). If the language is not valid, it will be ignored.
     • Response:

       • {"message": "<transcription_text>"}

   • POST /audio/translate?input=<input_text>&prompt=<prompt_text>: Translates audio using OpenAI ChatCompletion.
     • Query Parameters:
       • input: The input text to translate.
       • prompt: The prompt to guide the translation model.
     • Response:

       • {"message": "<translation_text>"}

CORS Configuration

The server is configured to allow requests from http://localhost:3000. You can adjust the AllowOrigins configuration in main.go if needed.

Notes

• The server uses pw-record for audio recording, ensure it is correctly configured in your system.
• The removeTempFiles function is currently not working as expected and may require adjustments.
• Error handling is rudimentary and logging could be improved.

License

MIT