import random
from datetime import datetime, timedelta

def generate_sessions():
    sessions = []
    start_time = datetime.now()
    
    for i in range(144): # 一天144期 (10分钟一期)
        session_id = start_time.strftime("%Y%m%d") + f"{i:03d}"
        winner = random.choice(['Big', 'Small'])
        open_time = start_time + timedelta(minutes=10 * i)
        
        sessions.append({
            "session_id": session_id,
            "winner": winner,
            "open_time": open_time.strftime("%Y-%m-%d %H:%M:%S")
        })
    return sessions

if __name__ == "__main__":
    sessions = generate_sessions()
    # 必须通过 print 输出 JSON 字符串，PHP 才能抓取到
    import json
    print(json.dumps(sessions))

# 你可以将此输出对接 PHP 的 cron_init_game.php