import gradio as gr
import yt_dlp
import os
from pydub import AudioSegment
import re

# Create downloads directory if it doesn't exist
os.makedirs("downloads", exist_ok=True)

def sanitize_filename(filename):
    """Sanitize the filename by removing or replacing special characters."""
    return re.sub(r'[^a-zA-Z0-9_-]', '_', filename)

def process_youtube_url(url, uploaded_file):
    """Process the YouTube URL or uploaded file to create ringtones."""
    try:
        filename = None
        song_name = None

        # Download the song if a URL is provided
        if url:
            ydl_opts = {
                'format': 'bestaudio/best',
                'outtmpl': 'downloads/%(id)s.%(ext)s',
                'cookiefile': 'cookies.txt'  # Optional: use cookies for authentication
            }

            with yt_dlp.YoutubeDL(ydl_opts) as ydl:
                info = ydl.extract_info(url, download=True)
                filename = os.path.join('downloads', f"{info['id']}.webm")
                song_name = sanitize_filename(info['title'])

        # Use uploaded file if URL is not provided
        elif uploaded_file:
            filename = uploaded_file.name
            song_name = sanitize_filename(os.path.splitext(uploaded_file.name)[0])

        # Ensure file exists
        if not filename or not os.path.exists(filename):
            return None, None, None

        # Convert to MP3 if not already converted
        mp3_filename = f"downloads/{song_name}.mp3"
        if not os.path.exists(mp3_filename):
            audio = AudioSegment.from_file(filename)
            audio.export(mp3_filename, format="mp3")

        # Convert to M4R (iPhone ringtone format), limiting length to 20 seconds
        ringtone_filename_m4r = f"downloads/{song_name}.m4r"
        if not os.path.exists(ringtone_filename_m4r):
            ringtone_audio = AudioSegment.from_file(mp3_filename)[:20000]  # 20 seconds
            ringtone_audio.export(ringtone_filename_m4r, format="mp4")

        # Return file names for download
        return mp3_filename, ringtone_filename_m4r

    except Exception as e:
        print(f"Error: {e}")
        return None, None

# Gradio UI
with gr.Blocks() as interface:
    gr.HTML("""
        <h1>Python YouTube Ringtones</h1>
        <p>Insert a URL to create ringtones or Upload an MP3 to convert.</p>
    """)

    with gr.Row():
        youtube_url = gr.Textbox(label="Enter YouTube URL", placeholder="Paste the URL here...")
        mp3_upload = gr.File(label="Upload MP3 (Optional)")

    with gr.Row():
        mp3_download = gr.File(label="Download Android Ringtone")
        iphone_ringtone = gr.File(label="Download iPhone Ringtone")

    process_button = gr.Button("Create Ringtones")
    process_button.click(process_youtube_url, inputs=[youtube_url, mp3_upload], outputs=[mp3_download, iphone_ringtone])

interface.launch(share=True)