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-3992,6 +4469,15 @@ "devOptional": true, "license": "MIT" }, + "node_modules/universalify": { + "version": "2.0.1", + "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.1.tgz", + "integrity": "sha512-gptHNQghINnc/vTGIk0SOFGFNXw7JVrlRUtConJRlvaw6DuX0wO5Jeko9sWrMBhh+PsYAZ7oXAiOnf/UKogyiw==", + "license": "MIT", + "engines": { + "node": ">= 10.0.0" + } + }, "node_modules/unpipe": { "version": "1.0.0", "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz", diff --git a/backend/package.json b/backend/package.json index df96c19..c8a2fe8 100644 --- a/backend/package.json +++ b/backend/package.json @@ -19,7 +19,9 @@ "jsonwebtoken": "^9.0.2", "node-cron": "^3.0.3", "pg": "^8.11.3", - "puppeteer": "^22.0.0" + "puppeteer": "^22.0.0", + "puppeteer-extra": "^3.3.6", + "puppeteer-extra-plugin-stealth": "^2.11.2" }, "devDependencies": { "@types/bcrypt": "^5.0.2", diff --git a/backend/src/services/scraper.ts b/backend/src/services/scraper.ts index 7a4ae4f..126ea32 100644 --- a/backend/src/services/scraper.ts +++ b/backend/src/services/scraper.ts @@ -1,12 +1,16 @@ import axios, { AxiosError } from 'axios'; import { load, type CheerioAPI } from 'cheerio'; -import puppeteer from 'puppeteer'; +import puppeteer from 'puppeteer-extra'; +import StealthPlugin from 'puppeteer-extra-plugin-stealth'; import { parsePrice, ParsedPrice, findMostLikelyPrice, } from '../utils/priceParser'; +// Add stealth plugin to avoid bot detection (Cloudflare, etc.) +puppeteer.use(StealthPlugin()); + export type StockStatus = 'in_stock' | 'out_of_stock' | 'unknown'; // Browser-based scraping for sites that block HTTP requests (e.g., Cloudflare) @@ -19,6 +23,7 @@ async function scrapeWithBrowser(url: string): Promise { '--disable-dev-shm-usage', '--disable-accelerated-2d-canvas', '--disable-gpu', + '--window-size=1920,1080', ], executablePath: process.env.PUPPETEER_EXECUTABLE_PATH || undefined, }); @@ -26,22 +31,33 @@ async function scrapeWithBrowser(url: string): Promise { try { const page = await browser.newPage(); - // Set a realistic user agent - await page.setUserAgent( - 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36' - ); - // Set viewport await page.setViewport({ width: 1920, height: 1080 }); // Navigate to the page and wait for content to load await page.goto(url, { waitUntil: 'networkidle2', - timeout: 30000, + timeout: 45000, }); - // Wait a bit for any dynamic content to render - await page.waitForSelector('body', { timeout: 5000 }); + // Wait for Cloudflare challenge to complete if present + // Check if we're on a challenge page and wait for it to resolve + const maxWaitTime = 15000; + const startTime = Date.now(); + + while (Date.now() - startTime < maxWaitTime) { + const title = await page.title(); + // Cloudflare challenge pages have titles like "Just a moment..." + if (!title.toLowerCase().includes('just a moment') && + !title.toLowerCase().includes('checking your browser')) { + break; + } + console.log(`[Browser] Waiting for Cloudflare challenge to complete... (${title})`); + await new Promise(resolve => setTimeout(resolve, 2000)); + } + + // Additional wait for dynamic content + await new Promise(resolve => setTimeout(resolve, 2000)); // Get the full HTML content const html = await page.content();