# foodie_automator_rss.py
import requests
import random
import time
import logging
import os
import json
import signal
import sys
import re
import email.utils
import feedparser
from duckduckgo_search import DDGS
from datetime import datetime, timedelta, timezone
from bs4 import BeautifulSoup
from openai import OpenAI
from urllib.parse import quote
from requests.packages.urllib3.util.retry import Retry
from requests.adapters import HTTPAdapter
from foodie_config import (
    RSS_FEEDS, RSS_FEED_NAMES, AUTHORS, RECIPE_KEYWORDS, PROMO_KEYWORDS,
    HOME_KEYWORDS, PRODUCT_KEYWORDS, PERSONA_CONFIGS, CATEGORIES,
    get_clean_source_name, X_API_CREDENTIALS
)
from foodie_utils import (
    load_json_file, save_json_file, get_image, generate_image_query,
    upload_image_to_wp, determine_paragraph_count, insert_link_naturally,
    is_interesting, generate_title_from_summary, summarize_with_gpt4o,
    generate_category_from_summary, post_to_wp, prepare_post_data,
    select_best_author, smart_image_and_filter, get_flickr_image
)
from foodie_hooks import get_dynamic_hook, get_viral_share_prompt
from dotenv import load_dotenv
import fcntl

load_dotenv()

is_posting = False
LOCK_FILE = "/home/shane/foodie_automator/locks/foodie_automator_rss.lock"

def signal_handler(sig, frame):
    logging.info("Received termination signal, checking if safe to exit...")
    if is_posting:
        logging.info("Currently posting, will exit after completion.")
    else:
        logging.info("Safe to exit immediately.")
        sys.exit(0)

signal.signal(signal.SIGTERM, signal_handler)
signal.signal(signal.SIGINT, signal_handler)

LOG_FILE = "/home/shane/foodie_automator/logs/foodie_automator_rss.log"
LOG_PRUNE_DAYS = 30
FEED_TIMEOUT = 15
MAX_RETRIES = 3
RETRY_BACKOFF = 2

POSTED_TITLES_FILE = '/home/shane/foodie_automator/posted_rss_titles.json'
USED_IMAGES_FILE = '/home/shane/foodie_automator/used_images.json'
EXPIRATION_HOURS = 24
IMAGE_EXPIRATION_DAYS = 7

posted_titles_data = load_json_file(POSTED_TITLES_FILE, EXPIRATION_HOURS)
posted_titles = set(entry["title"] for entry in posted_titles_data)
used_images = set(entry["title"] for entry in load_json_file(USED_IMAGES_FILE, IMAGE_EXPIRATION_DAYS) if "title" in entry)

def setup_logging():
    if os.path.exists(LOG_FILE):
        with open(LOG_FILE, 'r') as f:
            lines = f.readlines()
        cutoff = datetime.now(timezone.utc) - timedelta(days=LOG_PRUNE_DAYS)
        pruned_lines = []
        malformed_count = 0
        for line in lines:
            if len(line) < 19 or not line[:19].replace('-', '').replace(':', '').replace(' ', '').isdigit():
                malformed_count += 1
                continue
            try:
                timestamp = datetime.strptime(line[:19], '%Y-%m-%d %H:%M:%S').replace(tzinfo=timezone.utc)
                if timestamp > cutoff:
                    pruned_lines.append(line)
            except ValueError:
                malformed_count += 1
                continue
        if malformed_count > 0:
            logging.info(f"Skipped {malformed_count} malformed log lines during pruning")
        with open(LOG_FILE, 'w') as f:
            f.writelines(pruned_lines)
    
    logging.basicConfig(
        filename=LOG_FILE,
        level=logging.INFO,
        format="%(asctime)s - %(levelname)s - %(message)s",
        datefmt="%Y-%m-%d %H:%M:%S"
    )
    console_handler = logging.StreamHandler()
    console_handler.setFormatter(logging.Formatter('%(asctime)s - %(levelname)s - %(message)s'))
    logging.getLogger().addHandler(console_handler)
    logging.getLogger("requests").setLevel(logging.WARNING)
    logging.info("Logging initialized for foodie_automator_rss.py")

def acquire_lock():
    os.makedirs(os.path.dirname(LOCK_FILE), exist_ok=True)
    lock_fd = open(LOCK_FILE, 'w')
    try:
        fcntl.flock(lock_fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
        lock_fd.write(str(os.getpid()))
        lock_fd.flush()
        return lock_fd
    except IOError:
        logging.info("Another instance of foodie_automator_rss.py is running")
        sys.exit(0)

def create_http_session() -> requests.Session:
    session = requests.Session()
    retry_strategy = Retry(
        total=MAX_RETRIES,
        backoff_factor=RETRY_BACKOFF,
        status_forcelist=[403, 429, 500, 502, 503, 504],
        allowed_methods=["GET", "POST"]
    )
    adapter = HTTPAdapter(max_retries=retry_strategy)
    session.mount("http://", adapter)
    session.mount("https://", adapter)
    session.headers.update({
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36'
    })
    return session

def parse_date(date_str):
    try:
        parsed_date = email.utils.parsedate_to_datetime(date_str)
        if parsed_date.tzinfo is None:
            parsed_date = parsed_date.replace(tzinfo=timezone.utc)
        return parsed_date
    except Exception as e:
        logging.error(f"Failed to parse date '{date_str}': {e}")
        return datetime.now(timezone.utc)

def fetch_rss_feeds():
    logging.info("Starting fetch_rss_feeds")
    articles = []
    cutoff_date = datetime.now(timezone.utc) - timedelta(hours=EXPIRATION_HOURS)
    session = create_http_session()

    if not RSS_FEEDS:
        logging.error("RSS_FEEDS is empty in foodie_config.py")
        return articles

    logging.info(f"Processing feeds: {RSS_FEEDS}")
    for feed_url in RSS_FEEDS:
        for attempt in range(MAX_RETRIES):
            logging.info(f"Processing feed: {feed_url} (attempt {attempt + 1})")
            try:
                response = session.get(feed_url, timeout=FEED_TIMEOUT)
                response.raise_for_status()
                soup = BeautifulSoup(response.content, 'xml')
                items = soup.find_all('item')

                feed_title = RSS_FEED_NAMES.get(feed_url, (get_clean_source_name(feed_url), feed_url))
                for item in items:
                    try:
                        title = item.find('title').text.strip() if item.find('title') else "Untitled"
                        link = item.find('link').text.strip() if item.find('link') else ""
                        pub_date = item.find('pubDate')
                        pub_date = parse_date(pub_date.text) if pub_date else datetime.now(timezone.utc)

                        if pub_date < cutoff_date:
                            logging.info(f"Skipping old article: {title} (Published: {pub_date})")
                            continue

                        description = item.find('description')
                        summary = BeautifulSoup(description.text, 'html.parser').get_text().strip() if description else ""
                        content = item.find('content:encoded')
                        content_text = BeautifulSoup(content.text, 'html.parser').get_text().strip() if content else summary

                        articles.append({
                            "title": title,
                            "link": link,
                            "summary": summary,
                            "content": content_text,
                            "feed_title": feed_title[0] if isinstance(feed_title, tuple) else feed_title,
                            "pub_date": pub_date
                        })
                        logging.debug(f"Processed article: {title}")
                    except Exception as e:
                        logging.warning(f"Error processing entry in {feed_url}: {e}")
                        continue
                logging.info(f"Filtered to {len(articles)} articles from {feed_url}")
                break
            except Exception as e:
                logging.error(f"Failed to fetch RSS feed {feed_url}: {e}")
                if attempt < MAX_RETRIES - 1:
                    time.sleep(RETRY_BACKOFF * (2 ** attempt))
                continue
    articles.sort(key=lambda x: x["pub_date"], reverse=True)
    logging.info(f"Total RSS articles fetched: {len(articles)}")
    return articles

def fetch_duckduckgo_news_context(title, hours=24):
    for attempt in range(MAX_RETRIES):
        try:
            with DDGS() as ddgs:
                results = ddgs.news(f"{title} news", timelimit="d", max_results=5)
                titles = []
                for r in results:
                    try:
                        date_str = r["date"]
                        if '+00:00' in date_str:
                            dt = datetime.strptime(date_str, "%Y-%m-%dT%H:%M:%S+00:00").replace(tzinfo=timezone.utc)
                        else:
                            dt = datetime.strptime(date_str, "%Y-%m-%dT%H:%M:%S%Z").replace(tzinfo=timezone.utc)
                        if dt > (datetime.now(timezone.utc) - timedelta(hours=24)):
                            titles.append(r["title"].lower())
                    except ValueError as e:
                        logging.warning(f"Date parsing failed for '{date_str}': {e}")
                        continue
                context = " ".join(titles) if titles else "No recent news found within 24 hours"
                logging.info(f"DuckDuckGo News context for '{title}': {context}")
                return context
        except Exception as e:
            logging.warning(f"DuckDuckGo News context fetch failed for '{title}' (attempt {attempt + 1}): {e}")
            if attempt < MAX_RETRIES - 1:
                time.sleep(RETRY_BACKOFF * (2 ** attempt))
            continue
    logging.error(f"Failed to fetch DuckDuckGo News context for '{title}' after {MAX_RETRIES} attempts")
    return title

def curate_from_rss():
    try:
        articles = fetch_rss_feeds()
        if not articles:
            logging.info("No RSS articles available")
            return None, None, False  # Continue running

        attempts = 0
        max_attempts = 10
        while attempts < max_attempts and articles:
            article = articles.pop(0)
            title = article["title"]
            link = article["link"]
            summary = article.get("summary", "")
            source_name = article.get("feed_title", "Unknown Source")
            original_source = f'<a href="{link}">{source_name}</a>'

            if title in posted_titles:
                logging.info(f"Skipping already posted article: {title}")
                attempts += 1
                continue

            logging.info(f"Trying RSS Article: {title} from {source_name}")

            image_query, relevance_keywords, main_topic, skip = smart_image_and_filter(title, summary)
            if skip:
                logging.info(f"Skipping filtered RSS article: {title}")
                attempts += 1
                continue

            ddg_context = fetch_duckduckgo_news_context(title)
            scoring_content = f"{title}\n\n{summary}\n\nAdditional Context: {ddg_context}"
            interest_score = is_interesting(scoring_content)
            logging.info(f"Interest score for '{title}': {interest_score}")
            if interest_score < 6:
                logging.info(f"RSS Interest Too Low: {interest_score}")
                attempts += 1
                continue

            num_paragraphs = determine_paragraph_count(interest_score)
            extra_prompt = (
                f"Generate exactly {num_paragraphs} paragraphs.\n"
                f"FOCUS: Summarize ONLY the provided content, focusing on its specific topic and details without mentioning the original title.\n"
                f"Incorporate relevant insights from this additional context if available: {ddg_context}.\n"
                f"Do NOT introduce unrelated concepts unless in the content or additional context.\n"
                f"Expand on the core idea with relevant context about its appeal or significance in food trends.\n"
                f"Do not include emojis in the summary."
            )
            content_to_summarize = scoring_content
            final_summary = summarize_with_gpt4o(
                content_to_summarize,
                source_name,
                link,
                interest_score=interest_score,
                extra_prompt=extra_prompt
            )
            if not final_summary:
                logging.info(f"Summary failed for '{title}'")
                attempts += 1
                continue

            final_summary = insert_link_naturally(final_summary, source_name, link)

            post_data, author, category, image_url, image_source, uploader, page_url = prepare_post_data(final_summary, title, main_topic)
            if not post_data:
                attempts += 1
                continue

            image_url, image_source, uploader, page_url = get_flickr_image(image_query, relevance_keywords, main_topic)
            if not image_url:
                image_url, image_source, uploader, page_url = get_image(image_query)

            hook = get_dynamic_hook(post_data["title"]).strip()

            share_prompt = get_viral_share_prompt(post_data["title"], final_summary)
            share_links_template = (
                f'<p>{share_prompt} '
                f'<a href="https://x.com/intent/tweet?url={{post_url}}&text={{share_text}}" target="_blank"><i class="tsi tsi-twitter"></i></a> '
                f'<a href="https://www.facebook.com/sharer/sharer.php?u={{post_url}}" target="_blank"><i class="tsi tsi-facebook"></i></a></p>'
            )
            post_data["content"] = f"{final_summary}\n\n{share_links_template}"

            global is_posting
            is_posting = True
            try:
                post_id, post_url = post_to_wp(
                    post_data=post_data,
                    category=category,
                    link=link,
                    author=author,
                    image_url=image_url,
                    original_source=original_source,
                    image_source=image_source,
                    uploader=uploader,
                    page_url=page_url,
                    interest_score=interest_score,
                    should_post_tweet=True
                )
            except Exception as e:
                logging.error(f"Failed to post to WordPress for '{title}': {e}", exc_info=True)
                attempts += 1
                continue
            finally:
                is_posting = False

            if post_id:
                share_text = f"Check out this foodie gem! {post_data['title']}"
                share_text_encoded = quote(share_text)
                post_url_encoded = quote(post_url)
                share_links = share_links_template.format(post_url=post_url_encoded, share_text=share_text_encoded)
                post_data["content"] = f"{final_summary}\n\n{share_links}"
                is_posting = True
                try:
                    post_to_wp(
                        post_data=post_data,
                        category=category,
                        link=link,
                        author=author,
                        image_url=image_url,
                        original_source=original_source,
                        image_source=image_source,
                        uploader=uploader,
                        page_url=page_url,
                        interest_score=interest_score,
                        post_id=post_id,
                        should_post_tweet=False
                    )
                except Exception as e:
                    logging.error(f"Failed to update WordPress post '{title}' with share links: {e}", exc_info=True)
                finally:
                    is_posting = False

                timestamp = datetime.now(timezone.utc).isoformat()
                save_json_file(POSTED_TITLES_FILE, title, timestamp)
                posted_titles.add(title)
                logging.info(f"Successfully saved '{title}' to {POSTED_TITLES_FILE}")

                if image_url:
                    save_json_file(USED_IMAGES_FILE, image_url, timestamp)
                    used_images.add(image_url)
                    logging.info(f"Saved image '{image_url}' to {USED_IMAGES_FILE}")

                logging.info(f"***** SUCCESS: Posted '{post_data['title']}' (ID: {post_id}) from RSS *****")
                return post_data, category, True  # Run again immediately
            attempts += 1
            logging.info(f"WP posting failed for '{post_data['title']}'")

        logging.info("No interesting RSS article found after attempts")
        return None, None, False  # Wait before running again
    except Exception as e:
        logging.error(f"Unexpected error in curate_from_rss: {e}", exc_info=True)
        return None, None, False

def run_rss_automator():
    lock_fd = None
    try:
        lock_fd = acquire_lock()
        logging.info("***** RSS Automator Launched *****")
        post_data, category, should_continue = curate_from_rss()
        if not post_data:
            logging.info("No postable RSS article found")
        else:
            logging.info("Completed RSS run")
        return post_data, category, should_continue
    except Exception as e:
        logging.error(f"Fatal error in run_rss_automator: {e}", exc_info=True)
        return None, None, False
    finally:
        if lock_fd:
            fcntl.flock(lock_fd, fcntl.LOCK_UN)
            lock_fd.close()
            os.remove(LOCK_FILE) if os.path.exists(LOCK_FILE) else None

if __name__ == "__main__":
    setup_logging()
    post_data, category, should_continue = run_rss_automator()
    # Remove sleep timer, let manage_scripts.sh control execution
    logging.info(f"Run completed, should_continue: {should_continue}")