"""
News and sentiment analysis for A-share stocks.

Usage: python3 sentiment.py <function> <json_args>
"""

import sys
import json


def news(symbol, limit=20):
    """Get recent news for a stock. Stub - to be implemented with AKShare."""
    return json.dumps({
        "status": "stub",
        "message": f"News for {symbol} — not yet implemented",
        "items": [],
    }, ensure_ascii=False)


def market_sentiment():
    """Get overall market sentiment score. Stub - to be implemented."""
    return json.dumps({
        "status": "stub",
        "message": "Market sentiment — not yet implemented",
        "score": None,
    }, ensure_ascii=False)


FUNCTIONS = {
    "news": news,
    "market_sentiment": market_sentiment,
}

if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("Usage: sentiment.py <function> [json_args]")
        sys.exit(1)

    func_name = sys.argv[1]
    args = json.loads(sys.argv[2]) if len(sys.argv) > 2 else {}

    if func_name not in FUNCTIONS:
        print(f"Unknown function: {func_name}")
        sys.exit(1)

    result = FUNCTIONS[func_name](**args)
    print(result)