# sentiment_engine.py
from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer
import aiohttp

analyzer = SentimentIntensityAnalyzer()

async def get_crypto_sentiment(symbol):
    API_KEY = "6388e0c06c9ea848afee62ffe6a3dc9f1022e7ad" 
    base_coin = symbol.split('/')[0]
    url = f"https://cryptopanic.com/api/v1/posts/?auth_token={API_KEY}&currencies={base_coin}&filter=hot"
    
    try:
        async with aiohttp.ClientSession() as session:
            async with session.get(url, timeout=5) as resp:
                if resp.status == 200:
                    data = await resp.json()
                    all_text = ""
                    for post in data.get('results', [])[:10]:
                        all_text += post['title'] + " "
                    
                    if not all_text: return 0.5
                    
                    vs = analyzer.polarity_scores(all_text)
                    # Transformation (-1 à 1) -> (0 à 1)
                    return (vs['compound'] + 1) / 2
        return 0.5
    except:
        return 0.5