app.py

import gradio as gr
import os
import asyncio
from conver import ConversationConfig, URLToAudioConverter
from dotenv import load_dotenv

load_dotenv()
def synthesize_sync(article_url):
    return asyncio.run(synthesize(article_url))

async def synthesize(article_url):
    if not article_url:
        return "Please provide a valid URL.", None

    try:
        config = ConversationConfig()
        converter = URLToAudioConverter(config, llm_api_key=os.environ.get("TOGETHER_API_KEY"))
        
        output_file, conversation = await converter.url_to_audio(
            article_url, 
            "en-US-AvaMultilingualNeural", 
            "en-US-AndrewMultilingualNeural"
        )
        
        return conversation, output_file
    except Exception as e:
        return f"Error: {str(e)}", None

with gr.Blocks(theme='gstaff/sketch') as demo:
    gr.Markdown("# Turn Any Article into a Podcast")
    gr.Markdown("## Easily convert articles from URLs into listenable audio podcasts.")
    gr.Markdown("### Instructions")
    gr.Markdown("""
    - **Step 1:** Paste the URL of the article you want to convert into the textbox.
    - **Step 2:** Click on "Podcastify" to generate the podcast.
    - **Step 3:** Listen to the podcast or view the conversation.
    """)
    gr.Markdown("""
    - View the code at [GitHub - NarrateIt](https://github.com/EswarDivi/NarrateIt).
    """)

    with gr.Group():
        text = gr.Textbox(label="Article Link", placeholder="Enter the article URL here...")
        btn = gr.Button("Podcastify", variant="primary")
        
    with gr.Row():
        conv_display = gr.Textbox(label="Conversation", interactive=False, lines=10)
        aud = gr.Audio(label="Generated Podcast", interactive=False)
    
    gr.Examples(
        examples=["https://huggingface.co/blog/gradio-mcp"],
        inputs=text,  
        fn=synthesize_sync,
        outputs=[conv_display, aud] 
    )
    
    btn.click(synthesize_sync, inputs=[text], outputs=[conv_display, aud])

    gr.Markdown("""
    Note:
    The initial version of Podcastify, which was purely local and used an open-source and on-device models, has been replaced by the current one. You can find it in the local branch.

    Special thanks to:

    - [gstaff/sketch](https://huggingface.co/spaces/gstaff/sketch) for the Sketch Theme.
    - [Jina AI](https://jina.ai/reader/) for the web page parsing.
    """)

demo.queue(api_open=True, default_concurrency_limit=15).launch(show_api=True)