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import { httpClient } from '../../shared/utils/http-client';
import * as cheerio from 'cheerio';
import { CodeChefUserRating } from './types';
import { CODECHEF_BASE_URL, CODECHEF_SELECTORS } from './constants';
export async function fetchUserRating(username: string): Promise<CodeChefUserRating> {
const url = `${CODECHEF_BASE_URL}${username}`;
try {
const { data } = await httpClient.get(url);
const $ = cheerio.load(data);
// Check if user exists on page (CodeChef usually shows a specific page for missing users or 404s)
if ($('body').text().includes('not found') || $('title').text().includes('404')) {
throw new Error(`User '${username}' not found on CodeChef`);
}
const ratingElement = $(CODECHEF_SELECTORS.RATING).first();
if (ratingElement.length === 0) {
throw new Error('CodeChef schema change detected: Rating selector not found');
}
const ratingText = ratingElement.text().trim();
const rating = parseInt(ratingText);
const maxRatingElement = $(CODECHEF_SELECTORS.MAX_RATING).first();
const maxRatingText = maxRatingElement.text().match(/\d+/)?.[0];
const max_rating = maxRatingText ? parseInt(maxRatingText) : undefined;
if (isNaN(rating)) {
throw new Error('Could not parse CodeChef rating. Schema might have changed.');
}
return { rating, max_rating };
} catch (error: any) {
if (error.response?.status === 404) {
throw new Error(`User '${username}' not found on CodeChef`);
}
throw error;
}
}
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