app.py

import os
from pathlib import Path

import gradio as gr
from rich.console import Console
from rich.syntax import Syntax

proj_dir = Path(__name__).parent

subreddit = os.environ["SUBREDDIT"]
username = os.environ["USERNAME"]
dataset_name = f"{username}/dataset-creator-reddit-{subreddit}"


def log_file_to_html_string():
    log_file = "mylog.log"
    num_lines_visualize = 50

    console = Console(record=True, width=150)
    with open(log_file, "rt") as f:
        # Seek to the end of the file minus 300 lines
        # Read the last 300 lines of the file
        lines = f.readlines()
        lines = lines[-num_lines_visualize:]

        # Syntax-highlight the last 300 lines of the file using the Python lexer and Monokai style
        output = "".join(lines)
        syntax = Syntax(output, "python", theme="monokai", word_wrap=True)

    console.print(syntax)
    html_content = console.export_html(inline_styles=True)

    return html_content


markdown = f"""
# Reddit Scraper
This is a reddit scraper which builds [{dataset_name}](https://huggingface.co/datasets/{dataset_name}).

As shown below this space pulls data from reddit via [PRAW](https://praw.readthedocs.io/en/stable/), processes it, and puts it in a corresponding dataset.
"""

with gr.Blocks() as demo:
    gr.Markdown(markdown)
    gr.Image(proj_dir / 'media' / 'reddit_scraper.drawio.png')
    output = gr.HTML(log_file_to_html_string, every=1)
    demo.load(None,
              _js="""
        () => {
            document.body.classList.toggle('dark');
            document.querySelector('gradio-app').style.backgroundColor = 'var(--color-background-primary)'
        }
        """, )

if __name__ == '__main__':
    demo.queue().launch(server_name="0.0.0.0", show_error=True, server_port=7860)