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from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.chrome.service import Service
from webdriver_manager.chrome import ChromeDriverManager
import time

class FacebookScraper:
    def __init__(self):
        self.driver = self._setup_driver()

    def _setup_driver(self):
        options = webdriver.ChromeOptions()
        options.add_argument("--headless")
        options.add_argument("--no-sandbox")
        options.add_argument("--disable-dev-shm-usage")
        return webdriver.Chrome(service=Service(ChromeDriverManager().install()), options=options)

    def scrape_ads(self, search_query, num_scrolls=3):
        url = f"https://www.facebook.com/ads/library/?active_status=all&ad_type=all&country=ALL&q={search_query}&search_type=keyword"
        self.driver.get(url)
        time.sleep(5)  # Wait for page to load

        ads = []
        for _ in range(num_scrolls):
            self.driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
            time.sleep(3)
        
        ad_elements = self.driver.find_elements(By.CSS_SELECTOR, "div.x1yztbdb")
        for ad in ad_elements:
            try:
                ads.append(ad.text)
            except Exception as e:
                print("Error extracting ad:", e)
        
        return ads

    def close(self):
        self.driver.quit()