import gradio as gr
import os
import shutil
import subprocess

def process_ebook(ebook_file):
    # Ensure input_files folder exists
    input_dir = "input_files"
    os.makedirs(input_dir, exist_ok=True)

    # Get the base name of the uploaded file
    ebook_file_name = os.path.basename(ebook_file)
    ebook_file_path = os.path.join(input_dir, ebook_file_name)

    # Copy the file to the input_files directory if it doesn't already exist there
    if not os.path.exists(ebook_file_path):
        shutil.copy(ebook_file, ebook_file_path)

    # List the contents of the input_files folder
    input_files_list = os.listdir(input_dir)
    input_files_str = "\n".join(input_files_list)

    # Print the list of input files in the terminal
    print(f"Files in input_files folder:\n{input_files_str}")

    if not os.listdir("input_files"):
        raise FileNotFoundError("The folder 'input_files' is empty.")

    # Call the Auto_VoxNovel.py script and stream its output live
    try:
        process = subprocess.Popen(
            ["python3", "Auto_VoxNovel.py"],
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            text=True
        )

        # Print output in real-time
        for line in process.stdout:
            print(line, end='')

        process.wait()

        if process.returncode == 0:
            return f"Audiobook is ready! You can now download your files below.\n\nInput files:\n{input_files_str}"
        else:
            return f"Error occurred during audiobook processing.\n\nInput files:\n{input_files_str}"
    except Exception as e:
        return f"Failed to run audiobook script: {str(e)}\n\nInput files:\n{input_files_str}"

def list_output_files():
    # List all files in the output directory for downloading
    output_dir = "output_audiobooks"
    if os.path.exists(output_dir):
        files = [
            os.path.join(output_dir, f)
            for f in os.listdir(output_dir)
            if os.path.isfile(os.path.join(output_dir, f))
        ]
        return files
    return []

# Gradio Interface
with gr.Blocks() as gui:
    gr.Markdown("### Ebook to Audiobook Converter")

    with gr.Row():
        with gr.Column():
            ebook_input = gr.File(
                label="Upload your ebook file (epub, pdf, etc.)",
                type='filepath'  # Specify that we want the file path
            )
            process_button = gr.Button("Start Processing")
            status_output = gr.Textbox(label="Status")
            process_button.click(process_ebook, inputs=ebook_input, outputs=status_output)

        with gr.Column():
            gr.Markdown("### Download Generated Audiobook Files")
            download_button = gr.Button("Reload Files")
            file_output = gr.File(
                label="Generated Audiobook Files",
                interactive=False,
                type='file'  # Ensure the files are served correctly
            )

            # Update the file_output component with the list of output files
            def update_output_files():
                files = list_output_files()
                return files

            download_button.click(fn=update_output_files, inputs=[], outputs=file_output)

gui.launch()