import gradio as gr
import matplotlib.pyplot as plt
import numpy as np
import os
import soundfile as sf

def main():
    # Gradio Interface
    with gr.Blocks() as app:
        gr.Markdown(
            """# <div align="center"> Ilaria Audio Analyzer :sparkling_heart: </div>  
            Audio Analyzer Software by Ilaria, Help me on [Ko-Fi](https://ko-fi.com/ilariaowo)\n
            Special thanks to [Alex Murkoff](https://github.com/alexlnkp) for helping me coding it!
    
            Need help with AI? [Join AI Hub!](https://discord.gg/aihub)
            """
        )
    
        output_markdown = gr.Markdown()
    
        audio_input = gr.Audio(type='filepath')
        image_output = gr.Image(type='filepath', interactive=False)
    
        create_spec_butt = gr.Button(value='Create Spectrogram And Get Info')
    
        create_spec_butt.click(fn=create_spectrogram_and_get_info, inputs=[audio_input], outputs=[output_markdown, image_output])
    
        app.queue(max_size=1022).launch(share=True)

def create_spectrogram_and_get_info(audio_file):
    # Clear figure in case it has data in it
    plt.clf()
    
    # Read the audio data from the file
    audio_data, sample_rate = sf.read(audio_file)

    # Flatten the audio data if it's not mono
    audio_data = audio_data.flatten() if len(audio_data.shape) > 1 else audio_data

    # Create the spectrogram
    plt.specgram(audio_data, Fs=sample_rate / 1, NFFT=4096, sides='onesided',
                 cmap="Reds_r", scale_by_freq=True, scale='dB', mode='magnitude')

    # Save the spectrogram to a PNG file
    plt.savefig('spectrogram.png')

    # Get the audio file info
    audio_info = sf.info(audio_file)

    bit_depth = {'PCM_16': 16, 'FLOAT': 32}.get(audio_info.subtype, 0)
    
    # Convert duration to minutes, seconds, and milliseconds
    minutes, seconds = divmod(audio_info.duration, 60)
    seconds, milliseconds = divmod(seconds, 1)
    milliseconds *= 1000  # convert from seconds to milliseconds

    # Convert bitrate to Mb/s
    bitrate = audio_info.samplerate * audio_info.channels * bit_depth / 8 / 1024 / 1024

    # Create a table with the audio file info
    info_table = f"""
    
    | Information | Value |
    | --- | --- |
    | Duration | {int(minutes)} minutes - {int(seconds)} seconds - {int(milliseconds)} milliseconds |
    | Samples per second | {audio_info.samplerate} Hz |
    | Audio Channels | {audio_info.channels} |
    | Bitrate | {bitrate:.2f} Mb/s |
    | Extension | {os.path.splitext(audio_file)[1]} |
    """

    # Return the PNG file of the spectrogram and the info table
    return info_table, 'spectrogram.png'

# Create the Gradio interface
main()