from datetime import datetime, timedelta
import sys
import yfinance as yf

def getCurrentPrice():

    # Get the Symbol from ARGV
    symbol = sys.argv[1]

    # get the number of days ago to run the simulation for
    DaysBack = int(sys.argv[2])

    ticker = yf.Ticker(symbol)
    
    # Calculate the target date
    target_date = datetime.now() - timedelta(days=DaysBack)
    start_str = target_date.strftime('%Y-%m-%d')
    
    # End date must be the day AFTER the target to get that day's data
    end_date = target_date + timedelta(days=1)
    end_str = end_date.strftime('%Y-%m-%d')

    # Fetch data for that specific 24-hour window
    data = ticker.history(start=start_str, end=end_str)
    current_price = data['Close'].iloc[-1]

    # Return to C# via stdout
    print(f"---RESULT_START---")
    print(current_price)
    print(f"---RESULT_END---")

if __name__ == "__main__":
    getCurrentPrice()