import logging
import re
from typing import Dict, Any, List, Optional
from datetime import datetime
from urllib.parse import urljoin
from bs4 import BeautifulSoup
from .base import SeleniumScraper

logger = logging.getLogger(__name__)


class LuckyCaliforniaScraper(SeleniumScraper):
    def __init__(self, base_url: str = "https://luckysupermarkets.com"):
        super().__init__(base_url=base_url, rate_limit_seconds=3.0)
        self.ingredients_cache = {}

    def scrape(self) -> Dict[str, Any]:
        logger.info("Starting Lucky California scrape")
        result = {
            "source": "lucky_california",
            "scrape_type": "weekly_ad",
            "started_at": datetime.now().isoformat(),
            "items_scraped": 0,
            "items": []
        }

        try:
            featured_items = self.scrape_featured_coupons()
            result["items"].extend(featured_items)
            result["items_scraped"] = len(featured_items)

            result["completed_at"] = datetime.now().isoformat()
            result["status"] = "success"
            logger.info(f"Lucky California scrape complete: {result['items_scraped']} items")

        except Exception as e:
            logger.error(f"Lucky California scrape failed: {e}")
            result["status"] = "failed"
            result["error_message"] = str(e)
            result["completed_at"] = datetime.now().isoformat()

        return result

    def scrape_featured_coupons(self) -> List[Dict[str, Any]]:
        url = f"{self.base_url}/coupons/Coupon%2Flu-featured-in-ad"
        logger.info(f"Scraping featured coupons from {url}")

        page = self.get_browser_page(url)
        content = page.content()
        page.close()

        soup = BeautifulSoup(content, "html.parser")
        items = []

        coupon_items = soup.find_all("div", class_=re.compile(r"coupon|item|product", re.I))
        if not coupon_items:
            headline = soup.find("h1")
            if headline:
                logger.info(f"Page loaded, headline: {headline.get_text().strip()}")

        titles = soup.find_all(["h2", "h3", "a"], string=re.compile(r"\$[\d\.]+"))
        for title_elem in titles[:20]:
            try:
                item = self._parse_coupon_item(title_elem)
                if item:
                    items.append(item)
            except Exception as e:
                logger.debug(f"Failed to parse item: {e}")
                continue

        logger.info(f"Found {len(items)} coupon items")
        return items

    def _parse_coupon_item(self, element) -> Optional[Dict[str, Any]]:
        text = element.get_text().strip()

        price_match = re.search(r'\$[\d,]+\.?\d*', text)
        if not price_match:
            return None

        price_str = price_match.group().replace("$", "").replace(",", "")
        try:
            price = float(price_str)
        except ValueError:
            return None

        name_elem = element.find_parent("a") or element.find_parent("div")
        name = text.split("$")[0].strip() if "$" in text else text
        name = re.sub(r'\s+', " ", name).strip()[:200]

        if not name or len(name) < 3:
            return None

        image_url = None
        img_elem = element.find_parent().find("img") if element.find_parent() else None
        if img_elem and img_elem.get("src"):
            image_url = img_elem["src"]

        product_url = None
        link_elem = element.find_parent("a") if element.find_parent() else element.find("a")
        if link_elem and link_elem.get("href"):
            product_url = urljoin(self.base_url, link_elem["href"])

        item = {
            "name": name,
            "current_price": price,
            "image_url": image_url,
            "product_url": product_url,
            "is_on_sale": True,
            "scraped_at": datetime.now().isoformat(),
            "scraped_url": self.base_url
        }

        return item

    def scrape_produce(self) -> List[Dict[str, Any]]:
        url = f"{self.base_url}/coupons/Coupon%2Flu-produce"
        logger.info(f"Scraping produce from {url}")

        page = self.get_browser_page(url)
        content = page.content()
        page.close()

        soup = BeautifulSoup(content, "html.parser")
        items = []

        for item_elem in soup.find_all("div", class_=re.compile(r"product|item|coupon")):
            try:
                item = self._parse_coupon_item(item_elem)
                if item:
                    item["aisle"] = "Produce"
                    items.append(item)
            except Exception:
                continue

        return items

    def scrape_meat_seafood(self) -> List[Dict[str, Any]]:
        url = f"{self.base_url}/coupons/Coupon%2Flu-meat-seafood"
        logger.info(f"Scraping meat & seafood from {url}")

        page = self.get_browser_page(url)
        content = page.content()
        page.close()

        soup = BeautifulSoup(content, "html.parser")
        items = []

        for item_elem in soup.find_all("div", class_=re.compile(r"product|item|coupon")):
            try:
                item = self._parse_coupon_item(item_elem)
                if item:
                    item["aisle"] = "Meat"
                    items.append(item)
            except Exception:
                continue

        return items

    def scrape_dairy_eggs(self) -> List[Dict[str, Any]]:
        url = f"{self.base_url}/coupons/Coupon%2Flu-dairy-eggs"
        logger.info(f"Scraping dairy & eggs from {url}")

        page = self.get_browser_page(url)
        content = page.content()
        page.close()

        soup = BeautifulSoup(content, "html.parser")
        items = []

        for item_elem in soup.find_all("div", class_=re.compile(r"product|item|coupon")):
            try:
                item = self._parse_coupon_item(item_elem)
                if item:
                    item["aisle"] = "Dairy"
                    items.append(item)
            except Exception:
                continue

        return items