app.py

import gradio as gr
import os
import uuid
from pydub import AudioSegment
from pydub.silence import split_on_silence
import re 
import time


def clean_file_name(file_path):
    # Get the base file name and extension
    file_name = os.path.basename(file_path)
    file_name, file_extension = os.path.splitext(file_name)

    # Replace non-alphanumeric characters with an underscore
    cleaned = re.sub(r'[^a-zA-Z\d]+', '_', file_name)

    # Remove any multiple underscores
    clean_file_name = re.sub(r'_+', '_', cleaned).strip('_')

    # Generate a random UUID for uniqueness
    random_uuid = uuid.uuid4().hex[:6]

    # Combine cleaned file name with the original extension
    clean_file_path = os.path.join(os.path.dirname(file_path), clean_file_name + f"_{random_uuid}" + file_extension)

    return clean_file_path



def remove_silence(file_path, minimum_silence=50):
    sound = AudioSegment.from_file(file_path)  # auto-detects format
    audio_chunks = split_on_silence(sound,
                                    min_silence_len=100,
                                    silence_thresh=-45,
                                    keep_silence=minimum_silence) 
    combined = AudioSegment.empty()
    for chunk in audio_chunks:
        combined += chunk
    output_path=clean_file_name(file_path)        
    combined.export(output_path)  # format inferred from output file extension
    return output_path



def calculate_duration(file_path):
    audio = AudioSegment.from_file(file_path)
    duration_seconds = len(audio) / 1000.0  # pydub uses milliseconds
    return duration_seconds


# Some user uploads may trigger Hugging Face privacy policy checks, which can lead to account suspension
FILE_TIMESTAMPS = {}

def track_file(file_path):
    FILE_TIMESTAMPS[file_path] = time.time()


def cleanup_tracked_files(max_age_seconds=3600):
    now = time.time()
    to_delete = []

    for file_path, created_time in FILE_TIMESTAMPS.items():
        if now - created_time > max_age_seconds:
            if os.path.exists(file_path):
                try:
                    os.remove(file_path)
                    print(f"🗑️ Deleted: {file_path}")
                except Exception as e:
                    print(f"⚠️ Error deleting {file_path}: {e}")

            to_delete.append(file_path)

    # Remove from tracking
    for f in to_delete:
        FILE_TIMESTAMPS.pop(f, None)



def start_cleanup_worker(interval=3600):
    def worker():
        while True:
            print("🔄 Cleaning tracked files...")
            cleanup_tracked_files()
            time.sleep(interval)

    import threading
    threading.Thread(target=worker, daemon=True).start()

    
def process_audio(audio_file, seconds=0.05):
    if audio_file is None:
        return None, None, "No file uploaded"

    if not os.path.exists(audio_file):
        return None, None, "File not found"

    track_file(audio_file)

    keep_silence = int(seconds * 1000)

    output_audio_file = remove_silence(
        audio_file,
        minimum_silence=keep_silence
    )

    track_file(output_audio_file)

    before = calculate_duration(audio_file)
    after = calculate_duration(output_audio_file)

    text = f"Old Duration: {before:.3f} seconds \nNew Duration: {after:.3f} seconds"

    return output_audio_file, output_audio_file, text
        
# def ui():
#     theme = gr.themes.Soft(font=[gr.themes.GoogleFont("Source Sans Pro"), "Arial", "sans-serif"])
#     css = ".gradio-container {max-width: none !important;} .tab-content {padding: 20px;}"
#     demo = gr.Interface(
#     fn=process_audio,
#     inputs=[
#         gr.Audio(label="Upload Audio", type="filepath", sources=['upload', 'microphone']),
#         gr.Number(label="Keep Silence Upto (In seconds)", value=0.05)
#     ],
#     outputs=[
#         gr.Audio(label="Play Audio"),
#         gr.File(label="Download Audio File"),
#         gr.Textbox(label="Duration")
#     ],
#     title="Remove Silence From Audio",
#     description="Upload an MP3 or WAV file, and it will remove silent parts from it.",
#     theme=theme,
#     css=css,
#     )
#     return demo




def ui():
    theme = gr.themes.Soft(
        font=[gr.themes.GoogleFont("Source Sans Pro"), "Arial", "sans-serif"]
    )

    css = """
    .gradio-container {max-width: none !important;}
    .tab-content {padding: 20px;}

    /* Primary button - BLUE by default */
    button.primary {
        background-color: #2563eb !important;
        color: white !important;
        font-weight: 600;
        border: none !important;
        border-radius: 10px;
        padding: 12px 18px;
        font-size: 1.05em;
    }

    button.primary:hover {
        background-color: #1e40af !important;
    }
    """

    with gr.Blocks(theme=theme, css=css) as demo:

        # Header
        gr.HTML("""
        <div style="text-align:center; margin:20px auto; max-width:800px;">
            <h1 style="font-size:2.4em; margin-bottom:6px;">
                🔇 Remove Silence From Audio
            </h1>

            <p style="font-size:1.05em; color:#555; margin:0 0 10px;">
                Upload an MP3 or WAV file, and it will remove silent parts from it.
            </p>
            <p style="font-size:0.8em; color:#999;">
            ⚠️ Please don’t upload copyrighted content — it can take this Space offline.
            </p>
            <p style="font-size:0.9em; color:#777;">
                Install locally on your computer, enjoy unlimited runs with no waiting queue  
                <a href="https://github.com/NeuralFalconYT/Remove-Silence-From-Audio" target="_blank" style="text-decoration:none;">
                    Download Link
                </a>
            </p>
        </div>
        """)


       

        
        with gr.Row():
            # LEFT: Inputs
            with gr.Column(scale=1):
                audio_input = gr.Audio(
                    label="Upload Audio",
                    type="filepath",
                    sources=["upload", "microphone"]
                )

                silence_threshold = gr.Number(
                    label="Keep Silence Upto (In seconds)",
                    value=0.05
                )

                submit_btn = gr.Button(
                    "🔇 Remove Silence",
                    variant="primary"
                )

            # RIGHT: Outputs
            with gr.Column(scale=1):
                audio_output = gr.Audio(label="Play Audio")
                file_output = gr.File(label="Download Audio File")
                duration_output = gr.Textbox(label="Duration")

        submit_btn.click(
            fn=process_audio,   # <-- your function
            inputs=[audio_input, silence_threshold],
            outputs=[audio_output, file_output, duration_output]
        )
#         gr.HTML("""
# <style>
#     /* Futuristic Footer Styles */
#     @keyframes cyber-border-flow {
#         0% {background-position: 0% 50%;}
#         50% {background-position: 100% 50%;}
#         100% {background-position: 0% 50%;}
#     }
    
#     .cyber-promo-card {
#         margin: 50px auto 30px auto;
#         max-width: 850px;
#         padding: 3px; /* Thickness of the gradient border */
#         border-radius: 20px;
#         background: linear-gradient(90deg, #ff00cc, #333399, #00f2ff);
#         background-size: 200% 200%;
#         animation: cyber-border-flow 4s ease infinite;
#         box-shadow: 0 0 15px rgba(0, 242, 255, 0.2);
#     }

#     .cyber-promo-inner {
#         background: #0f172a; /* Dark Slate background */
#         border-radius: 17px; /* Slightly less than parent to fit border */
#         padding: 30px 20px;
#         text-align: center;
#         position: relative;
#         overflow: hidden;
#     }

#     /* Subtle grid pattern overlay */
#     .cyber-promo-inner::before {
#         content: "";
#         position: absolute;
#         top: 0; left: 0; width: 100%; height: 100%;
#         background-image: 
#             linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
#             linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
#         background-size: 40px 40px;
#         pointer-events: none;
#         z-index: 0;
#     }

#     .cyber-h2 {
#         color: #fff;
#         font-family: sans-serif;
#         font-size: 1.5rem;
#         font-weight: 800;
#         text-transform: uppercase;
#         letter-spacing: 2px;
#         margin: 0 0 10px 0;
#         text-shadow: 0 0 10px rgba(0, 204, 255, 0.6);
#         position: relative;
#         z-index: 1;
#     }

#     .cyber-p {
#         color: #cbd5e1;
#         font-family: sans-serif;
#         font-size: 1rem;
#         line-height: 1.5;
#         margin: 0 0 25px 0;
#         position: relative;
#         z-index: 1;
#     }

#     .cyber-button {
#         display: inline-block;
#         padding: 12px 35px;
#         background: transparent;
#         color: #00f2ff;
#         border: 2px solid #00f2ff;
#         border-radius: 6px;
#         text-decoration: none;
#         font-family: sans-serif;
#         font-weight: 700;
#         font-size: 0.95rem;
#         text-transform: uppercase;
#         letter-spacing: 1px;
#         transition: all 0.3s ease;
#         position: relative;
#         z-index: 1;
#         box-shadow: 0 0 10px rgba(0, 242, 255, 0.2);
#     }

#     .cyber-button:hover {
#         background: #00f2ff;
#         color: #000;
#         box-shadow: 0 0 30px rgba(0, 242, 255, 0.8);
#         transform: scale(1.02);
#     }
    
#     .dev-credit {
#         margin-top: 25px;
#         font-size: 0.8rem;
#         color: #64748b;
#         position: relative;
#         z-index: 1;
#     }
#     .dev-credit a {
#         color: #94a3b8;
#         text-decoration: none;
#         transition: color 0.2s;
#     }
#     .dev-credit a:hover {
#         color: #fff;
#     }
# </style>

# <div class="cyber-promo-card">
#     <div class="cyber-promo-inner">
#         <h2 class="cyber-h2">✂️ Remove Silence from Video is now available</h2>
#         <a href="https://huggingface.co/spaces/NeuralFalcon/Remove-Silence-From-Video" 
#            target="_blank" 
#            class="cyber-button">
#            Try Now
#         </a>
#         <div class="dev-credit">
#             Developed by <a href="https://github.com/NeuralFalconYT" target="_blank">NeuralFalconYT</a>
#         </div>
#     </div>
# </div>
# """)
    return demo

import click
@click.command()
@click.option("--debug", is_flag=True, default=False, help="Enable debug mode.")
@click.option("--share", is_flag=True, default=False, help="Enable sharing of the interface.")
def main(debug, share):
    start_cleanup_worker()
    demo=ui()
    demo.queue().launch(debug=debug, share=share)
if __name__ == "__main__":
    main()