import logging
from datetime import datetime

logger = logging.getLogger(__name__)

POSITIVE_WORDS = {"moon", "bullish", "pump", "rally", "amazing", "great", "buy", "long", "up", "high", "profit", "gain", "surge", "breakout"}
NEGATIVE_WORDS = {"crash", "bearish", "dump", "sell", "short", "down", "low", "loss", "scam", "drop", "fear", "panic", "rekt"}

class SocialClient:
    def __init__(self, reddit_client_id: str, reddit_secret: str, reddit_user_agent: str,
                 twitter_bearer: str = ""):
        self.reddit_client_id = reddit_client_id
        self.reddit_secret = reddit_secret
        self.reddit_user_agent = reddit_user_agent
        self.twitter_bearer = twitter_bearer
        self._reddit = None
        self._cache: list[dict] = []

    def _get_reddit(self):
        if self._reddit is None:
            import praw
            self._reddit = praw.Reddit(
                client_id=self.reddit_client_id,
                client_secret=self.reddit_secret,
                user_agent=self.reddit_user_agent,
            )
        return self._reddit

    def fetch_reddit(self, subreddits=("cryptocurrency", "binance", "CryptoMarkets"), limit=50) -> list[dict]:
        try:
            reddit = self._get_reddit()
            posts = []
            for sub_name in subreddits:
                sub = reddit.subreddit(sub_name)
                for post in sub.hot(limit=limit):
                    posts.append({
                        "title": post.title,
                        "score": post.score,
                        "num_comments": post.num_comments,
                        "created_utc": post.created_utc,
                        "subreddit": sub_name,
                    })
            self._cache = posts
            return posts
        except Exception as e:
            logger.warning(f"Reddit fetch failed: {e}")
            return self._cache

    def filter_posts_by_coin(self, posts: list[dict], coin_symbol: str) -> list[dict]:
        symbol = coin_symbol.replace("USDT", "").upper()
        name_map = {"BTC": ["bitcoin", "btc"], "ETH": ["ethereum", "eth"],
                     "SOL": ["solana", "sol"], "BNB": ["bnb", "binance coin"],
                     "XRP": ["xrp", "ripple"], "DOGE": ["doge", "dogecoin"],
                     "ADA": ["ada", "cardano"], "AVAX": ["avax", "avalanche"]}
        keywords = name_map.get(symbol, [symbol.lower()])
        return [p for p in posts if any(kw in p["title"].lower() for kw in keywords)]

    def simple_sentiment(self, posts: list[dict]) -> dict:
        positive = 0
        negative = 0
        neutral = 0
        for p in posts:
            words = set(p["title"].lower().split())
            pos_count = len(words & POSITIVE_WORDS)
            neg_count = len(words & NEGATIVE_WORDS)
            if pos_count > neg_count:
                positive += 1
            elif neg_count > pos_count:
                negative += 1
            else:
                neutral += 1
        return {"positive": positive, "negative": negative, "neutral": neutral, "total": len(posts)}