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

if not os.path.exists("downloads"):
    os.makedirs("downloads")

def sanitize_filename(filename):
    """Sanitize filenames to avoid special characters."""
    return re.sub(r'[^a-zA-Z0-9_-]', '_', filename)

def process_youtube_or_audio(url, uploaded_audio, start_time, end_time):
    try:
        filename = None
        song_name = None

        print(f"URL: {url}")  # Debug: Check URL input
        print(f"Uploaded audio: {uploaded_audio}")  # Debug: Check if audio is uploaded
        print(f"Start time: {start_time}, End time: {end_time}")  # Debug: Check times

        # Process YouTube URL
        if url:
            print("Processing YouTube URL...")
            ydl_opts = {
                'format': 'bestaudio/best',
                'outtmpl': 'downloads/%(id)s.%(ext)s',
                'cookiefile': 'cookies.txt'
            }
            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'])

        # Process uploaded audio file
        elif uploaded_audio:
            print("Processing uploaded audio...")
            filename = uploaded_audio.name
            song_name = "uploaded_audio"
        
        if not filename or not os.path.exists(filename):
            print(f"Error: No valid file found at {filename}")  # Debug
            return None, None

        # Load audio and trim it
        audio = AudioSegment.from_file(filename)
        start_time_ms = start_time * 1000
        end_time_ms = end_time * 1000
        start_time_ms = max(0, min(start_time_ms, len(audio)))
        end_time_ms = max(start_time_ms, min(end_time_ms, len(audio)))

        trimmed_audio = audio[start_time_ms:end_time_ms]

        # Export trimmed audio
        mp3_filename = f"downloads/{song_name}.mp3"
        trimmed_audio.export(mp3_filename, format="mp3")

        # Convert to m4r format for iPhone
        m4a_filename = f"downloads/{song_name}.m4a"
        subprocess.run([
            'ffmpeg', '-i', mp3_filename, '-vn', '-acodec', 'aac', '-b:a', '192k', m4a_filename
        ], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

        # Rename to m4r format for iPhone ringtones
        m4r_filename = f"downloads/{song_name}.m4r"
        os.rename(m4a_filename, m4r_filename)

        print(f"Files saved: {mp3_filename}, {m4r_filename}")  # Debug

        return os.path.abspath(mp3_filename), os.path.abspath(m4r_filename)

    except Exception as e:
        print(f"Error: {e}")  # Debug: Print the error
        return None, None


with gr.Blocks(css="""
    body { font-family: Arial, sans-serif; text-align: center; }
    .light-btn { 
        background-color: #ADD8E6; 
        color: #333; 
        border: 2px solid #ccc; 
        padding: 10px 20px; 
        font-size: 16px; 
        cursor: pointer; 
    }
    .light-btn:hover { background-color: #87CEFA; }
""") as interface:

    gr.HTML("""
        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
        <h1><i class="fas fa-music"></i>&nbsp;PYTR</h1>
        <p>Python YouTube Ringtones. Enter a YouTube URL or upload audio to create ringtones.</p>
        <p>
            <a href="https://ringtones.JesseJesse.xyz" target="_blank">Ringtones</a>&nbsp;&nbsp;&nbsp;
            <a href="https://pub-c1de1cb456e74d6bbbee111ba9e6c757.r2.dev/iphone.png" target="_blank">iPhone xfers</a>&nbsp;&nbsp;&nbsp;
            <a href="https://youtube.com" target="_blank">YouTube</a>
        </p>
    """)

    with gr.Row():
        with gr.Column(scale=1, min_width=250):
            gr.HTML('<label><i class="fas fa-link"></i>&nbsp;YouTube URL</label>')
            youtube_url = gr.Textbox(placeholder="Enter the URL here...", show_label=False)

        with gr.Column(scale=1, min_width=250):
            gr.HTML('<label><i class="fas fa-upload"></i>&nbsp;Upload Audio</label>')
            audio_upload = gr.File(label="Upload Audio", type="filepath", show_label=False)

    with gr.Row():
        gr.HTML("<h3>Trim Audio (Optional)</h3>")

    with gr.Row():
        start_time = gr.Slider(0, 20, value=0, label="Start Time (seconds)")
        end_time = gr.Slider(1, 20, value=20, label="End Time (seconds)")

    with gr.Row():
        process_button = gr.Button("Create Ringtones", elem_classes="light-btn")

    with gr.Row():
        with gr.Column(scale=1, min_width=250):
            gr.HTML('<label>&nbsp;Android Ringtone</label>')
            mp3_download = gr.File(label="Android")
            android_instructions = gr.Textbox(label="Install", placeholder="Move the .mp3 file to the ringtones folder", lines=2)

        with gr.Column(scale=1, min_width=250):
            gr.HTML('<label>&nbsp;iPhone Ringtone</label>')
            iphone_ringtone = gr.File(label="Apple")
            iphone_instructions = gr.Textbox(label="Install", placeholder="Open GarageBand on your iPhone. Create a new project with Audio Recorder. Tap on the Tracks view (≡ icon in top-left). Tap the Loop icon (top-right corner). Select 'Files', then tap 'Browse items from the Files app'. Locate your .m4r file and tap it to import into GarageBand.", lines=4)

    process_button.click(process_youtube_or_audio, inputs=[youtube_url, audio_upload, start_time, end_time], outputs=[mp3_download, iphone_ringtone])

interface.launch(share=True)