app.py

import tempfile
import gradio as gr
from openai import OpenAI

def text_to_audio(api_key, text, voice_name):
    """
    Convert text to speech using OpenAI's TTS API
    """
    # Input validation
    if not api_key or not api_key.strip():
        raise gr.Error("Please provide an OpenAI API key")
    
    if not text or not text.strip():
        raise gr.Error("Please provide some text to convert to speech")
    
    try:
        # Initialize OpenAI client with the provided API key
        client = OpenAI(api_key=api_key.strip())
        
        # Create a temporary file to store the audio
        with tempfile.NamedTemporaryFile(delete=False, suffix=".mp3") as temp_audio_file:
            speech_file_path = temp_audio_file.name
        
        # Generate speech using OpenAI's API
        response = client.audio.speech.create(
            model="tts-1",
            voice=voice_name.strip(),  # Ensure voice name is properly formatted
            input=text.strip()
        )
        
        # Save the audio to the temporary file
        response.stream_to_file(speech_file_path)
        
        return speech_file_path
    
    except Exception as e:
        raise gr.Error(f"Error: {str(e)}")

# Create the Gradio interface
demo = gr.Interface(
    fn=text_to_audio,
    inputs=[
        gr.Textbox(
            label="OpenAI API Key",
            placeholder="Enter your OpenAI API key",
            type="password"
        ),
        gr.Textbox(
            label="Enter Text",
            placeholder="Enter the text you want to convert to speech",
            lines=6
        ),
        gr.Dropdown(
            choices=["alloy", "echo", "fable", "onyx", "nova", "shimmer"],
            label="Select Voice",
            value="nova"
        )
    ],
    outputs=gr.Audio(
        label="Generated Audio",
        type="filepath"
    ),
    title="Text to Speech with OpenAI",
    description="Convert text to speech using OpenAI's TTS API. Enter your API key (not stored), type your text, and select a voice.",
)

# Launch the app
if __name__ == "__main__":
    demo.launch()
else:
    demo.launch(show_error=True)