import time
import uuid
import 数据库连接 as db

def add_notification(target_account: str, notif_data: dict):
    try:
        from_user = notif_data.get("from_user")
        if target_account == from_user or not target_account: 
            return # 不给自己发通知
        
        users_db = db.load_data("users.json", default_data={})
        user_info = users_db.get(from_user, {})
        
        notif = {
            "id": f"msg_{int(time.time())}_{uuid.uuid4().hex[:6]}",
            "type": notif_data.get("type"), 
            "from_user": from_user,
            "from_name": user_info.get("name", from_user),
            "from_avatar": user_info.get("avatarDataUrl", ""),
            "target_item_id": notif_data.get("target_item_id", ""),
            "target_item_title": notif_data.get("target_item_title", ""),
            "content": notif_data.get("content", ""),
            "is_read": False,
            "created_at": int(time.time())
        }
        
        def updater(data):
            if target_account not in data:
                data[target_account] = []
            data[target_account].insert(0, notif)
        
        db.atomic_update("messages.json", updater, default_data={})
    except Exception as e:
        print(f"⚠️ 通知发送失败 (target={target_account}): {e}")
        # 不抛出异常，让主流程继续