"""
Amazon search scraper across marketplaces. No API key.
"""
import time
import httpx
from bs4 import BeautifulSoup

DOMAINS = {
    "US": "amazon.com", "UK": "amazon.co.uk", "DE": "amazon.de", "FR": "amazon.fr",
    "CA": "amazon.ca", "AU": "amazon.com.au", "IN": "amazon.in", "JP": "amazon.co.jp",
    "BR": "amazon.com.br", "MX": "amazon.com.mx", "ES": "amazon.es", "IT": "amazon.it",
}
HEADERS = {"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7)"}


def run(params: dict) -> dict:
    keyword = params.get("keyword")
    if not keyword:
        raise ValueError("keyword is required")
    country = params.get("country", "US").upper()
    max_results = int(params.get("max_results", 25))
    domain = DOMAINS.get(country, DOMAINS["US"])

    url = f"https://www.{domain}/s?k={keyword}"

    last_err = None
    for attempt in range(3):
        try:
            resp = httpx.get(url, headers=HEADERS, timeout=20.0)
            resp.raise_for_status()
            break
        except Exception as e:
            last_err = e
            time.sleep(1.5 * (attempt + 1))
    else:
        raise ValueError(f"Amazon request failed after retries: {last_err}")

    soup = BeautifulSoup(resp.text, "html.parser")
    cards = soup.select('div[data-component-type="s-search-result"]')

    results = []
    for card in cards[:max_results]:
        asin = card.get("data-asin")
        title_el = card.select_one("h2 span")
        price_whole = card.select_one(".a-price-whole")
        price_frac = card.select_one(".a-price-fraction")
        rating_el = card.select_one("span.a-icon-alt")
        reviews_el = card.select_one("span.a-size-base.s-underline-text")
        link_el = card.select_one("h2 a")

        price = None
        if price_whole:
            price = f"{price_whole.get_text(strip=True)}{price_frac.get_text(strip=True) if price_frac else ''}"

        results.append(
            {
                "asin": asin,
                "title": title_el.get_text(strip=True) if title_el else None,
                "price": price,
                "rating": rating_el.get_text(strip=True) if rating_el else None,
                "review_count": reviews_el.get_text(strip=True) if reviews_el else None,
                "is_prime": bool(card.select_one("[aria-label='Amazon Prime']")),
                "url": f"https://www.{domain}{link_el['href']}" if link_el and link_el.get("href") else None,
            }
        )
    return {"count": len(results), "results": results}