from typing import Dict, List, Optional
from datetime import datetime
from .database import DatabaseManager

class AlertSystem:
    def __init__(self, db_manager: DatabaseManager):
        self.db_manager = db_manager
        self.alert_subscribers = []
    
    def check_alert_conditions(self) -> List[Dict]:
        """Check for conditions that should trigger alerts"""
        high_risk_narratives = self.db_manager.get_high_risk_narratives(threshold=80)
        
        alerts = []
        for narrative in high_risk_narratives:
            alert = {
                "level": "HIGH" if narrative['risk_score'] > 90 else "MEDIUM",
                "title": f"High-risk narrative detected: {narrative['title'][:50]}...",
                "description": f"Risk score: {narrative['risk_score']}/100",
                "narrative_id": narrative['id'],
                "timestamp": datetime.now().isoformat()
            }
            alerts.append(alert)
        
        return alerts
    
    def subscribe_to_alerts(self, email: str, threshold: int = 80) -> str:
        """Subscribe an email to alerts"""
        self.alert_subscribers.append({"email": email, "threshold": threshold})
        return f"✅ Subscribed {email} to alerts (threshold: {threshold})"