src/build_nomic.py

# https://atlas.nomic.ai/data/derek2/boru-subreddit-neural-search/map
import os
import re
import time

import markdown
import nomic
import numpy as np
import pandas as pd
from nomic import atlas
from nomic.dataset import AtlasClass
from nomic.data_inference import NomicTopicOptions

from src.my_logger import setup_logger

NOMIC_KEY = os.getenv('NOMIC_KEY')
nomic.login(NOMIC_KEY)
sleep_time = int(os.getenv('NOMIC_SLEEP_TIME', 60))
logger = setup_logger(__name__)

# Regex to extract subreddit
subreddit_re = re.compile(r'[^e]r/(\w+)')


def count_words(text):
    words = text.split()
    return len(words)


def preprocess_markdown(text):
    # Inline CSS for spoilers
    spoiler_style = 'background-color: black; color: black;'
    hover_style = 'color: inherit;'  # Assuming you want the text to be visible on hover

    # Replace Reddit spoiler tags with an HTML span with inline styles
    text = re.sub(
            r'\>\!(.*?)\!\<',
            r'<span class="spoiler" style="' + spoiler_style + '" onmouseover="this.style.color=\'' + hover_style + '\'" onmouseout="this.style.color=\'black\'">\1</span>',
            text
            )
    return text


def convert_markdown_to_html(text):
    processed_text = preprocess_markdown(text)
    html = markdown.markdown(processed_text, extensions=['mdx_linkify'])
    return html


def extract_subreddit(text):
    match = subreddit_re.search(text)
    if match:
        return 'r/' + match.group(1)
    return ''


def delete_old_nomic():
    logger.info(f"Trying to delete old version of nomic Atlas...")
    try:
        ac = AtlasClass()
        atlas_id = ac._get_dataset_by_slug_identifier("derek2/boru-subreddit-neural-search")['id']
        ac._delete_project_by_id(atlas_id)
        logger.info(f"Succeeded in deleting old version of nomic Atlas.")
        
        # Get sleep time from environment variable
        logger.info(f"Sleeping for {sleep_time}s to wait for old version deletion on the server-side")
        time.sleep(sleep_time)
    except Exception as e:
        logger.info(f"Failed to delete old version of nomic Atlas. Error: {e}")



def preprocess_markdown(text):
    # Inline CSS for spoilers
    spoiler_style = 'background-color: black; color: black;'
    hover_style = 'color: inherit;'  # Assuming you want the text to be visible on hover

    # Replace Reddit spoiler tags >!spoiler!< with an HTML span with inline styles
    text = re.sub(
            r'\>\!(.*?)\<\!',
            r'<span class="spoiler" style="' + spoiler_style + '" onmouseover="this.style.color=\'' + hover_style + '\'" onmouseout="this.style.color=\'black\'">\1</span>',
            text
            )
    return text


def build_nomic(dataset):
    df = dataset['train'].to_pandas()

    # For nomig: filter out rows that contain 'nsfw' in specified text columns or where 'nsfw' column is True
    df = df[~df[['content', 'title', 'flair', 'permalink']].apply(
            lambda x: x.str.contains('nsfw', case=False, na=False)).any(axis=1) & ~df['nsfw']]

    non_embedding_columns = ['date_utc', 'title', 'flair', 'poster', 'url', 'id', 'word_count',
                             'score', 'score_percentile', 'html_content', 'subreddit']

    # Calculate the 0th, 10th, 20th, ..., 90th percentiles for the 'score' column
    percentiles = df['score'].quantile([0, .1, .2, .3, .4, .5, .6, .7, .8, .9]).tolist()

    # Ensure the bins are unique and include the maximum score
    bins = sorted(set(percentiles + [df['score'].max()]))

    # Define the labels for the percentile ranges
    # The number of labels should be one less than the number of bins
    labels = [int(i * 10) for i in range(len(bins) - 1)]

    # Add a 'percentile_ranges' column to the DataFrame
    # This assigns each score to its corresponding percentile range
    df['score_percentile'] = pd.cut(df['score'], bins=bins, labels=labels, include_lowest=True)

    df['word_count'] = df['content'].apply(count_words)
    df['url'] = 'https://www.reddit.com' + df['permalink']
    df['html_content'] = df['content'].apply(convert_markdown_to_html)

    # Apply the function
    df['subreddit'] = df['content'].apply(extract_subreddit)

    topic_options = NomicTopicOptions(build_topic_model=True)
    topic_options.topic_label_field = 'html_content'

    delete_old_nomic()

    # Create Atlas project
    logger.info(f"Trying to create new version of Atlas...")
    project = atlas.map_data(embeddings=np.stack(df['embedding'].values),
                             data=df[non_embedding_columns].to_dict(orient='records'),
                             id_field='id',
                             identifier='BORU Subreddit Neural Search',
                             topic_model=topic_options
                             )
    logger.info(f"Succeeded in creating new version of nomic Atlas: {project.slug}")